Enhancement of CO2 capture in the MDEA solution by introducing TETA or TETA-AEP mixtures as an activator
作者：
Wang, Mei* ;Rao, Na;Liu, Yuqing;Li, Jiale;Cheng, Qunpeng;...
期刊：
Separation Science and Technology ,2019年54(1):101-109 ISSN：0149-6395
通讯作者：
Wang, Mei
作者机构：
[Rao, Na; Liu, Yuqing; Cheng, Qunpeng; Li, Jianfen; Li, Jiale; Wang, Mei] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Wang, Mei] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan, Hubei, Peoples R China.
关键词：
CO2 capture;MDEA;activator;enhancement;viscosity
摘要：
TETA or TETA-AEP mixtures were used as an activator to enhance CO<inf>2</inf> capture in the MDEA solution. The effect of amount and type of activators, and the viscosity of absorbents on CO<inf>2</inf> capture were discussed. The results showed that the positive effect of TETA-AEP mixtures on CO<inf>2</inf> capture in the MDEA solution was greater than that of TETA. The optimal absorbent was No. V, whose CO<inf>2</inf> absorption capacity/desorption efficiency was 3.08 times/1.18 times of No. І. The viscosity had a little influence on CO<inf>2</inf> absorption and an obvious effect on CO<inf>2</inf> desorption.<br/> ©2018, ©2018 Taylor & Francis.
语种：
英文
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Phosphate removed from aqueous solution by electrochemical oxidation of ferrous iron
作者：
Zhang, Shunxi* ;Yue, Zhen;Guo, Zhaoqiang;Cheng, Qunpeng;Mei, Yunjun;...
期刊：
Desalination and Water Treatment ,2018年126:231-238 ISSN：1944-3994
通讯作者：
Zhang, Shunxi;Li, Jianfen
作者机构：
[Guo, Zhaoqiang; Cheng, Qunpeng; Li, Jianfen; Mei, Yunjun; Zhang, Shunxi; Yue, Zhen; Zhang, SX; Wang, Mei] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Zhang, SX; Li, JF] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Adsorption;Electrochemical oxidation;Ferrous iron;Iron hydroxide;Phosphate
摘要：
The synthetic aqueous solution containing phosphate was treated using electrochemical oxidation of ferrous iron to produce the fresh precipitation of iron hydroxide or iron (oxyhydr)oxide. The results show that phosphate removal efficiency (PRE) for FPV (aqueous solution containing Fe2+ and phosphate, and voltage is supplied) is the highest and is 90% in 50 min. Meantime, PRE has a high correlation with iron relative consumption. Additionally, the removal mechanism on phosphate is speculated by Fourier transformed infrared analysis on the settling sludge. An optimum iron concentration of 250 mg/L is determined when initial iron concentration is increasing from 100 to 300 mg/L. Likewise, there lies an optimum phosphate concentration of 20 mg/L while initial phosphate concentration ranging from 10 to 40 mg/L. PRE increases with current density improving from 1.5 to 7.5 mA/cm2. Meantime, energy for eliminating a unit mass of pollutants and energy for removing pollutants per volume unit increase from 28.08 to 188.31 kWh/kg and from 1.40 to 24.96 kWh/m3, respectively. PRE for wastewater containing Ca2+ is the highest and is about 100% in 50 min when wastewater contains K+, Na+, Ca2+, and Mg2+, respectively. However, PRE for effluent including Mg2+ is the lowest and is only 88% even in 90 min. The process used for removal of phosphate from wastewater is feasible. © 2018 Desalination Publications. All rights reserved.
语种：
英文
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CO2 Adsorption by Amine-Functionalized MCM-41: A Comparison between Impregnation and Grafting Modification Methods
作者：
Rao, Na;Wang, Mei* ;Shang, Ziming;Hou, Yanwen;Fan, Guozhi;...
期刊：
Energy & Fuels ,2018年32(1):670-677 ISSN：0887-0624
通讯作者：
Wang, Mei;Li, Jianfen
作者机构：
[Rao, Na; Shang, Ziming; Li, Jianfen; Wang, Mei; Hou, Yanwen; Fan, Guozhi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 40023, Hubei, Peoples R China.
通讯机构：
[Wang, M; Li, JF] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 40023, Hubei, Peoples R China.
摘要：
Modifications by impregnation and grafting are commonly used for the preparation of amine-functionalized MCM-41. A comprehensive evaluation of the advantages and disadvantages of the two methods was performed in this work. MCM-41 was synthesized by the hydrothermal method, setting the amine-loading mass fraction at 40, 50, and 60 wt %. Three amine-modified adsorbents were prepared by impregnating polyethylenimine (PEI), and the three other adsorbents were prepared by grafting 3-aminopropyltriethoxysilane (APTS) onto MCM-41. The as-prepared adsorbents were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and N2 adsorption-desorption techniques. CO2 adsorption capacities were measured, and the experimental data were fitted with adsorption kinetic models. The cyclic stability of the adsorbents prepared by the two kinds of amine-modified methods was compared using the cyclic adsorption-desorption experiments. The characterization results showed that the target adsorbents were prepared successfully. The thermal stability of the adsorbents modified by grafting was better than the thermal stability of the adsorbents modified by the impregnation. Maximum CO2 adsorption capacities of 3.53 mmol g-1 (50% PEI-MCM-41) and 2.41 mmol g-1 (50% APTS-MCM-41) could be reached at 25 °C and 1 atm, which were 4.7 and 3.2 times greater than that of MCM-41. The Avrami model fitted the experimental data well, indicating a variety of interactions between the adsorbents and CO2. CO2 adsorption capacity after 5 adsorption-desorption cycles decreased by 14.22 and 5.19% for the adsorbents prepared by impregnation and grafting, respectively. It was concluded that MCM-41 modified by impregnation and grafting followed the same kinetic model. The absorbents modified by impregnation showed higher CO2 adsorption capacity and amine-loading efficiency, while those prepared by grafting had better thermal and cyclic stabilities. © 2017 American Chemical Society.
语种：
英文
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Treatment of Wastewater Containing Nickel by Electrocoagulation Process Using Photovoltaic Energy
作者：
Zhang, Shunxi* ;Yang, Xiaohong;Cheng, Qunpeng;Wang, Mei;Hu, Chun;...
期刊：
ENVIRONMENTAL ENGINEERING SCIENCE ,2018年35(5):484-492 ISSN：1092-8758
通讯作者：
Zhang, Shunxi
作者机构：
[Cheng, Qunpeng; Li, Jianfen; Zhang, Shunxi; Chai, Bo; Wang, Mei; Hu, Chun; Yang, Xiaohong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Zhang, Shunxi] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
electrocoagulation;heavy metal;photovoltaic energy;renewable energy;wastewater containing nickel
摘要：
Abstract To avoid deficiencies of traditional electrocoagulation process, electrocoagulation process powered by renewable photovoltaic energy has been directly used to remove nickel from wastewater. Results show that under the solar irradiation intensity (SII) of 750 ± 30 W/m2, aluminum electrode has higher nickel removal efficiency (NRE) than graphite and titanium, and its NRE is nearly 100% in 40 min. An optimum distance of 20 mm is determined for the electrode gap. NRE in 40 min nearly decreases from 99.6% to 78.8% when initial Ni2+ concentration increases from 100 to 300 mg/L. Under the SII of 610 ± 40 W/m2, solution containing SO42− of 3.4 mmol/L gets the highest NRE, while wastewater containing Cl− of 6.8 mmol/L has the lowest. Furthermore, effluent, including SO42− of 1.7 and Cl− of 3.4 mmol/L, shows a higher NRE too. NRE in 40 min increases when output power of the photovoltaic panel changes from 30 to 90 W, but doesn't show an obviously increasing tendency when the power improves further to 120 W. NRE for a fine day is the highest and is 100% in 40 min. However, its energy utilization efficiency is the lowest, but the saving cost is the most. In addition, MAl, Ct, and Ca sharply increase with the SII enhancing. Therefore, for some enterprises or regions with serious environmental burden and insufficient economic input, this process will provide an effective alternative approach to remove heavy metals from wastewater in a renewable and low-cost way.
语种：
英文
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Enhancement of CO2 capture performance of aqueous MEA by mixing with [NH(2)e-mim][BF4]
作者：
Wang, Mei* ;Wang, Mingming;Rao, Na;Li, Jiale;Li, Jianfen*
期刊：
RSC Advances ,2018年8(4):1987-1992 ISSN：2046-2069
通讯作者：
Wang, Mei;Li, Jianfen
作者机构：
[Rao, Na; Li, Jianfen; Wang, Mei; Wang, Mingming; Li, Jiale] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, M; Li, JF] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
摘要：
Alcohol amine solutions have a high absorption capacity and rate for CO 2 capture, however, there are some shortcomings such as high energy-consumption and low stability. To enhance CO 2 capture performance of aqueous MEA, a functional ionic liquid ([NH 2 e-mim][BF 4 ]) was introduced based on the advantages for CO 2 capture. Absorbents were prepared with the molar concentration ratio of [NH 2 e-mim][BF 4 ] to the 30 vol% aqueous MEA of 010, 1:9, 2:8, 3:7, 4:6 and 6:4. The density and the viscosity of the investigated absorbents were measured and the effects of the molar fraction of [NH 2 e-mim][BF 4 ] (n I ) and temperature on CO 2 absorption performance were investigated. CO 2 desorption performance of the solvent at different temperatures was discussed. The stability performance of the absorbent with n I of 2:8 (I/M 2:8 ) was examined by five consecutive cyclic tests. The results showed that for pure CO 2 , the I/M 2:8 displayed the highest absorption performance at 303 K under 1 bar: A comparable CO 2 absorption capacity of the 30 vol% aqueous MEA and a higher CO 2 absorption rate at the later absorption stage. Moreover, with the increase of temperature, CO 2 absorption capacity and rate decreased, while CO 2 desorption efficiency and rate increased. 393 K was chosen as the optimum desorption temperature with the desorption efficiency of 99.31%. The introducing of IL contributed to CO 2 desorption performance of the absorbents significantly. The properties (CO 2 absorption capacity, mass loss, density and viscosity) of the I/M 2:8 during the cycles suggested that the IL-MEA mixture had an excellent stability performance. © The Royal Society of Chemistry 2018.
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英文
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Nutrients removal from the secondary effluents of municipal domestic wastewater by Oscillatoria tenuis and subsequent co-digestion with pig manure
作者：
Cheng, Qunpeng;Deng, Fang;Li, Hongxia;Qin, ZhenHua;Wang, Mei;...
期刊：
Environmental Technology ,2018年39(24):3127-3134 ISSN：0959-3330
通讯作者：
Li, Jianfen
作者机构：
[Cheng, Qunpeng; Li, Jianfen; Qin, ZhenHua; Li, Hongxia; Wang, Mei] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430073, Hubei, Peoples R China.;[Deng, Fang] Huazhong Univ Sci & Technol, Sch Environm Sci & Engn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Li, Jianfen] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430073, Hubei, Peoples R China.
关键词：
Nutrient removal;algae;biogas;pig manure;pretreatment
摘要：
Batch experiments were carried out to investigate the performance of Oscillatoria tenuis to remove nitrogen, phosphorus and chemical oxygen demand (COD) from secondary effluents of municipal domestic wastewater. Meanwhile the potential of biogas production by collected O. tenuis co-digested with pig manure was also investigated. O. tenuis had a biomass productivity of 150 mg L−1 d−1, a removal rate of NH+4(96.1%), total phosphorus (82.9%) and COD (92.6%) within 7 d at an aeration rate of 1.0 L/min. The biochemical methane potential (BMP) test for O. tenuis fermented with pig manure was evaluated at three different ratios. The cumulative methane yield was 183 mL CH4/gVSadd at a mixing ratio (MR) of 3.0, 191 mL CH4/gVSadd at a MR of 2.0 and 84 mL CH4/gVSadd at a MR of 1.0. The maximum methane yield appeared at the ratio of 2.0. Meanwhile, acid-, alkali- and thermal-pretreatments were applied to raw microalgae biomass to promote biogas production. The highest methane productivity (256 mL CH4/gVSadd) was achieved by the thermal-pretreatment at 120°C, which was about 1.5 times higher than the non-pretreatment group (191 mL CH4/g VSadd). © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group.
语种：
英文
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Properties of ionic liquid mixtures of [NH(2)e-mim][BF4] and [bmim][BF4] as absorbents for CO2 capture
作者：
Wang, Mei* ;Rao, Na;Wang, Mingming;Cheng, Qunpeng;Zhang, Shunxi;...
期刊：
Greenhouse Gases: Science and Technology ,2018年8(3):483-492 ISSN：2152-3878
通讯作者：
Wang, Mei
作者机构：
[Rao, Na; Cheng, Qunpeng; Li, Jianfen; Wang, Mingming; Zhang, Shunxi; Wang, Mei] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Hubei, Peoples R China.
通讯机构：
[Wang, Mei] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Hubei, Peoples R China.
关键词：
CO2 capture;ionic liquid mixtures;physicochemical properties;positive effect
摘要：
<jats:title>Abstract</jats:title><jats:p>Although the use of ‘task‐specific’ amine‐functionalized imidazolium‐based ionic liquids (ILs) such as [NH<jats:sub>2</jats:sub>emim][BF<jats:sub>4</jats:sub>] and conventional imidazolium‐based ILs [bmim][BF<jats:sub>4</jats:sub>]), as absorbents for CO<jats:sub>2</jats:sub> capture, possesses some unique advantages, they have a number of disadvantages when independently used for CO<jats:sub>2</jats:sub> capture. This study examined a series of binary liquid mixtures of [NH<jats:sub>2</jats:sub>emim][BF<jats:sub>4</jats:sub>] and [bmim][BF<jats:sub>4</jats:sub>] for CO<jats:sub>2</jats:sub> capture, exploiting the advantages and reducing the disadvantages of each of the components. The CO<jats:sub>2</jats:sub> absorption performances of the mixtures were investigated as well as their physicochemical properties. Densities, viscosities, and surface tensions of the mixtures of varying molar fractions of [NH<jats:sub>2</jats:sub>e‐mim][BF<jats:sub>4</jats:sub>] (from 0.2–0.5 mol/mol) were experimentally measured over a temperature range of 298.0–343.0 K at a fixed pressure of 0.1 MPa. Thermal expansion coefficients, excess logarithmic viscosities, surface entropies, and surface enthalpies were calculated based on the experimental data. All the estimated physicochemical properties in a mixture with a mole fraction of [NH<jats:sub>2</jats:sub>e‐mim][BF<jats:sub>4</jats:sub>] of 0.4 had variation characteristics significantly different from those in mixtures with other mole fractions, which might be attributed to the large interaction between the two kinds of IL components and showed a positive effect on CO<jats:sub>2</jats:sub> absorption and desorption. The above laws were consistent with those of the CO<jats:sub>2</jats:sub> capture performances of the IL mixtures basically. An IL mixture containing 0.4 mol/mol [NH<jats:sub>2</jats:sub>e‐mim][BF<jats:sub>4</jats:sub>] and 0.6 mol/mol [bmim][BF<jats:sub>4</jats:sub>] would be an optimal CO<jats:sub>2</jats:sub>‐capturing absorbent. The findings in this study may enrich the database and provide a theoretical support for CO<jats:sub>2</jats:sub> capture with IL mixtures. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.</jats:p>
语种：
英文
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Thermogravimetry Study of the Pyrolytic Characteristics and Kinetics of Fast-Growing Eucalyptus Residue
作者：
Cheng, Qunpeng;Jiang, Meng;Qin, Zhenhua;Zhang, Shunxi;Wang, Mei;...
期刊：
Energy & Fuels ,2017年31(12):13675-13681 ISSN：0887-0624
通讯作者：
Li, Jianfen
作者机构：
[Cheng, Qunpeng; Li, Jianfen; Qin, Zhenhua; Zhang, Shunxi; Wang, Mei] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430073, Hubei, Peoples R China.;[Jiang, Meng] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430073, Hubei, Peoples R China.
通讯机构：
[Li, Jianfen] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430073, Hubei, Peoples R China.
摘要：
To utilize the fast-growing Eucalyptus residue (FGER) for energy application, the pyrolysis kinetics of FGER was studied by a new simple distributed activation energy model (DAEM) through thermogravimetry analysis at different heating rates of 10, 20, 30, 40, and 100 °C/min from room temperature to 1000 °C. The results showed that the DAEM could fit the experimental data well. The pyrolysis weight loss process of FGER could be divided into four stages. The first and second stages were attributed to hemicellulose decomposition located at α= 0-0.1 and α= 0.11-0.34 with activation energies of 117 and 155.8 kJ/mol, respectively. It was found that cellulose pyrolysis occurred in the third stage, which covers a conversion range of α= 0.35-0.74 with E = 182.9 kJ/mol. The fourth stage represented the tails of the differential thermogravimetry curve and occurred at high conversion with a high activation energy value. The DAEM fitted the experiments well in low conversion, α<0.8. The weight fraction distribution in the fourth stage was complex, which indicated the heterogeneity of the reaction.<br/> ©2017 American Chemical Society.
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英文
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1,2,3-Trimethoxypropane: A Glycerol-Derived Physical Solvent for CO2 Absorption
作者：
Flowers, Brian S.;Mittenthal, Max S.;Jenkins, Alexander H.;Wallace, David A.;Whitley, John W.;...
期刊：
ACS SUSTAINABLE CHEMISTRY & ENGINEERING ,2017年5(1):911-921 ISSN：2168-0485
通讯作者：
Bara, Jason E.;Verevkin, Sergey P.
作者机构：
[Bara, Jason E.; Flowers, Brian S.; Mittenthal, Max S.; Wallace, David A.; Dennis, Grayson P.; Whitley, John W.; Jenkins, Alexander H.; Turner, C. Heath] Univ Alabama, Dept Chem & Biol Engn, Box 870203, Tuscaloosa, AL 35487 USA.;[Wang, Mei] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.;[Emel'yanenko, Vladimir N.; Verevkin, Sergey P.] Univ Rostock, Dept Phys Chem, Dr Lorenz Weg 1, D-18059 Rostock, Germany.;[Emel'yanenko, Vladimir N.] Kazan Fed Univ, Dept Phys Chem, Kremlevskaya Str 18, Kazan 420008, Russia.
通讯机构：
[Bara, Jason E.; Verevkin, Sergey P.] U;Univ Alabama, Dept Chem & Biol Engn, Box 870203, Tuscaloosa, AL 35487 USA.;Univ Rostock, Dept Phys Chem, Dr Lorenz Weg 1, D-18059 Rostock, Germany.
关键词：
Glycerol;Green chemistry;Physical solvent;Precombustion CO2 capture;Selexol
摘要：
1,2,3-Trimethoxypropane (1,2,3-TMP) is the trimethyl ether of propane-1,2,3-triol, better known as glycerol, which can be derived from triglycerides originating from either plant or animal sources. Despite its simple structure and the ubiquity of its glycerol precursor, successful synthesis of 1,2,3-TMP was only recently reported in the literature, with studies suggesting it may be a “green” and nontoxic alternative to solvents such as diglyme, a constitutional isomer. However, no thermophysical properties of 1,2,3-TMP have yet been reported. Furthermore, the structure of 1,2,3-TMP is also analogous to polyether solvents used in the Selexol process for removal of CO2 and other “acid” gases from CH4, H2, etc. As such, examining the solubility of CO2 in 1,2,3-TMP is also of interest. This work details our initial studies and characterization of 1,2,3-TMP as a physical solvent for CO2 absorption, as well as the characterization of its density, viscosity, and vapor pressure with respect to temperature. 1,2,3-TMP exhibits favorable properties, and glycerol-derived triethers warrant deeper consideration as new solvents for CO2 absorption and other gas treating applications.
Glycerol represents a potentially green substrate for developing physical solvents for CO2’s reversible capture and reduction of greenhouse gas emissions.
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英文
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蒸汽压缩制冷实验装置改造及性能测试
作者：
郑立辉;袁喆;王敏;胡廷平
期刊：
武汉轻工大学学报 ,2016年35(4):110-113 ISSN：2095-7386
作者机构：
武汉轻工大学 化学与环境工程学院,湖北 武汉,430023;[袁喆; 胡廷平; 王敏; 郑立辉] 武汉轻工大学
关键词：
蒸汽压缩制冷实验装置;温度控制器;电能表;改造;性能测试
摘要：
现有的蒸汽压缩制冷试验装置通过手动调节电压方法来控制加热功率,以达到控制蒸发温度的目的,当制冷剂冷凝温度不变时,只能被动等待蒸发温度稳定,实际上只能得到一组数据;使用人工智能温度控制器,自动调节加热功率,实现蒸发温度的自动控制,电子电能表记录显示用于加热消耗的电能,在一定温度范围内自动控制蒸发温度.对改造后设备的性能测试数据表明:蒸发温度在0―-15℃内可根据需要调节,制冷量、压缩机消耗功率、制冷系数随蒸发温度的提高而增大.证明改造是成功的.
语种：
中文
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化工热力学概念的教学体会——以偏摩尔量为例
作者：
郑立辉;宋光森;胡廷平;王敏;李云雁
期刊：
化工高等教育 ,2016年33(06):60-64 ISSN：1000-6168
作者机构：
武汉轻工大学化学与环境工程学院,湖北武汉,430023;[宋光森; 李云雁; 胡廷平; 王敏; 郑立辉] 武汉轻工大学
关键词：
化工热力学;基本概念;偏摩尔量;教学;体会
摘要：
基本概念是化工热力学的重要基础。化工热力学中的概念很多,但初学者往往感到抽象,难以理解。对于实际问题,我们首先要有正确的定性认识,在此基础上进行定量处理才有意义,才能解决实际问题,为培养创造性打下坚实的基础。本文以偏摩尔量为例,介绍了笔者讲授热力学基本概念的做法和体会。
语种：
中文
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Electrokinetic remediation of soil containing Cr(VI) by photovoltaic solar panels and a DC-DC converter
作者：
Zhang, Shunxi* ;Zhang, Jian;Cheng, Xianzhong;Mei, Yunjun;Hu, Chun;...
期刊：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY ,2015年90(4):693-700 ISSN：0268-2575
通讯作者：
Zhang, Shunxi
作者机构：
[Cheng, Xianzhong; Li, JianFen; Zhang, Jian; Mei, Yunjun; Zhang, Shunxi; Hu, Chun; Wang, Mei] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Zhang, Shunxi] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Chromium compounds;DC-DC converters;Electrodes;Electrodynamics;Energy utilization;Heavy metals;HVDC power transmission;Pollution;Remediation;Soils;Solar power generation;Cr concentration;Electric energy consumption;Electrokinetic remediation;National economy;Photovoltaic energy;Solar irradiation;Urgent problems;Utilization efficiency;Soil pollution;chromium;Article;bioremediation;concentration (parameters);electric potential;electricity;environmental protection;soil pollution;solar energy;solar radiation;sunlight;X ray diffraction
摘要：
BACKGROUND: In China, soil pollution is becoming more and more serious with the national economy rapidly developing. How to remedy soil containing heavy metals in an effective and low cost way is increasingly becoming an urgent problem. Utilization of renewable photovoltaic energy in the environmental protection field brings forward a solution. RESULTS: Cr(VI) removal from soil using an electrokinetic remediation process powered by photovoltaic solar modules and a DC-DC converter was studied. The results show that under solar irradiation intensity of 650±20Wm-2 and 9V output voltage of the converter, Cr(VI) removal efficiency of an iron electrode can increase to 99.8% in 30min. For output voltage in the range 3-11.5V, voltage has a significant effect on Cr(VI) removal efficiency. When initial Cr(VI) concentration is increased from 200mgkg-1 to 450mgkg-1, Cr(VI) removal efficiency and removal rate decrease. Total Cr concentrations and XRD analysis show that chromium in soil is accumulated near the anodic zone after electrokinetic remediation. For the highest voltage of 11.5V, although sunlight utilization efficiency is the highest, electric energy consumption is the largest, and EPV and EPM are 249.4 kWh kg-1 and 156.1 kWh m-3, respectively. CONCLUSION: The process used for removal of Cr(VI) from soil is feasible. © 2014 Society of Chemical Industry.
语种：
英文
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硅胶表面3-甲基噻吩分子印迹聚合物的制备及吸附特性研究
作者：
胡廷平;李成伟;郑立辉;郑洁;王敏
期刊：
离子交换与吸附 ,2015年31(3):250-259 ISSN：1001-5493
作者机构：
[胡廷平; 李成伟; 郑立辉; You J.; 王敏] School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
关键词：
分子印迹聚合物;3-甲基噻吩;硅胶;模拟汽油
摘要：
采用γ-氨丙基三乙氧基硅烷对硅胶微球表面进行接枝修饰,然后以甲基丙烯酸为功能单体,二甲基丙烯酸乙二醇酯为交联剂,甲苯为溶剂,3-甲基噻吩为模板分子,在硅胶微球表面聚合,得到3-甲基噻吩的硅胶微球表面分子印迹聚合物,用红外光谱进行结构表征。通过考察模板分子、功能单体、交联剂、溶剂的用量等对吸附容量的影响,得到3-甲基噻吩、甲基丙烯酸、二甲基丙烯酸乙二醇酯、甲苯适宜的摩尔聚合比,以此配比合成了3-甲基噻吩表面印迹聚合物,在模拟汽油中,研究了该聚合物对3-甲基噻吩的吸附动力学、吸附选择性、竞争性及再生性能。结果表明,分子印迹聚合物对3-甲基噻吩具有良好的吸附选择性和再生性能,最大吸附容量可达85mg/g,有望将其用于汽油中噻吩类硫的深度脱除,从而弥补加氢脱硫缺陷。
语种：
中文
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Comparison of Electrochemical Activity of Nanosized alpha-LiFeO2 Cathode Materials for Li-ion Secondary Battery Using Different Current Collectors
作者：
Wang, Jia* ;Wang, Yourong;Zhou, Wei;Qian, Xiaofang;Wang, Min;...
期刊：
International Journal of Electrochemical Science ,2014年9(7):3961-3968 ISSN：1452-3981
通讯作者：
Wang, Jia
作者机构：
[Wang, Yourong; Cheng, Siqing; Qian, Xiaofang; Wang, Jia; Wang, Min; Zhou, Wei] Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, Jia] W;Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Nanosized alpha-LiFeO2 cathode material;Current collector;Electrochemical activity;Lithium-ion batteries
摘要：
Nanosized α-LiFeO2 cathode material for the Li-ion secondary battery using microporous carbon paper or aluminum current collectors was investigated. The results show that nanosized α-LiFeO2 electrode using microporous carbon paper current collector exhibits much higher discharge capacity than that using aluminum current collector although the cell reaction mechanism is not dependent on the current collector. Moreover, the discharge capacity for the nanosized α-LiFeO2 electrode using microporous carbon paper current collector at different discharge rate is approximately close. This may be attributed to the unique structure and electrochemical stability of microporous carbon paper.© 2014 The Authors.
语种：
英文
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Facile synthesis of electrochemically active α-LiFeO2 nanoparticles in absolute ethanol at ambient temperature
作者：
Wang, Yourong* ;Wang, Jia;Liao, Hantao;Qian, Xiaofang;Wang, Min;...
期刊：
RSC Advances ,2014年4(8):3753-3757 ISSN：2046-2069
通讯作者：
Wang, Yourong
作者机构：
[Liao, Hantao; Wang, Yourong; Cheng, Siqing; Song, Guangsen; Qian, Xiaofang; Wang, Jia; Wang, Min] Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, Yourong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
摘要：
The synthesis of electrochemically active α-LiFeO<inf>2</inf> nanoparticles in absolute ethanol at ambient temperature was developed using LiOH·H<inf>2</inf>O and Fe(NO<inf>3</inf>)<inf>3</inf>·9H <inf>2</inf>O as starting materials and characterized by X-ray diffraction (XRD), Scanning Electronic Microscopy (SEM), Transmission Electron Microscopy (TEM). The electrochemical performance of the α-LiFeO<inf>2</inf> nanoparticles as cathode materials for lithium secondary batteries showed that the initial discharge capacity of α-LiFeO<inf>2</inf> (theoretical capacity of 282 mA h g<sup>-1</sup>) nanoparticles was 290.6, 194, and 183.8 mA h g<sup>-1</sup> at 0.1, 1 and 2 C, respectively, which was one of the previous reported highest values. Especially, α-LiFeO<inf>2</inf> nanoparticles exhibited improved cycle stability at 2 C. The capacity retention was around 55.2% with the discharge capacity of 101.5 mA h g<sup>-1</sup> after 50 cycles at 2 C. ©2013 The Royal Society of Chemistry.
语种：
英文
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Analysis and practice of cleaner production in a wastepaper papermaking enterprise
作者：
Wang Mei* ;Yang Ming;Pi Ke-wu;Gao Lin-xia
期刊：
Applied Mechanics and Materials ,2014年535:237-240 ISSN：1660-9336
通讯作者：
Wang Mei
作者机构：
[Yang Ming; Wang Mei] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.;[Gao Lin-xia; Wang Mei; Pi Ke-wu] Hubei Univ Technol, Ctr Clean Prod, Wuhan 430068, Hunan, Peoples R China.
通讯机构：
[Wang Mei] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
会议名称：
2014 2nd International Conference on Energy Engineering and Environment Engineering, ICEEEE 2014
会议时间：
10 January 2014 through 11 January 2014
会议地点：
Hong Kong, PEOPLES R CHINA
会议主办单位：
[Wang Mei;Yang Ming] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.^[Wang Mei;Pi Ke-wu;Gao Lin-xia] Hubei Univ Technol, Ctr Clean Prod, Wuhan 430068, Hunan, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
Benefit;Cleaner production;Practice;Waste paper
摘要：
Cleaner production is one of sustainable development approaches for wastepaper papermaking industry. Current situation of a wastepaper papermaking enterprise was analyzed, and it showed that the unit product energy consumption, pollutant generation had large cleaner production potential. 16 cleaner production solutions were generated through material balance analysis, advanced technologies collection, experts consultation and other ways. After the plans were carried out, 7.83% of pollutants were cut down, 7.62% of energy was saved, 1.57% of waste paper was reduced, 1.68% of dry fiber raw material was decreased, and 8.80% of reused industrial water increased equally. Cleaner production was an effective way for wastepaper papermaking industry to save energy, reduce energy consumption, reduce pollution, and increase benefit.
语种：
英文
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Hydrolysis of cellulose catalyzed by sulfonated poly(styrene-co-divinylbenzene) in the ionic liquid 1-n-butyl-3-methylimidazolium bromide
作者：
Fan, Guozhi* ;Liao, Chongjing;Fang, Tao;Wang, Min;Song, Guangsen
期刊：
Fuel Processing Technology ,2013年116(1):142-148 ISSN：0378-3820
通讯作者：
Fan, Guozhi
作者机构：
[Liao, Chongjing; Song, Guangsen; Wang, Min; Fan, Guozhi; Fang, Tao] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Fan, Guozhi] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Cellulose;Hydrolysis;Ionic liquid;Sulfonated poly(styrene-co- divinylbenzene)
摘要：
The hydrolysis of cellulose catalyzed by sulfonated poly(styrene-co- divinylbenzene) (SPS-DVB) was carried out in the ionic liquid 1-n-butyl-3-methylimidazolium bromide (BMIMBr), in which the reaction medium BMIMBr and sulfate polymer catalyst can be recovered. The influence of the amount of catalyst, water and ionic liquid, reaction conditions including reaction time and temperature was investigated in detail. The recovery of BMIMBr was performed based on using Aliquat 336 and naphthalene-2-boronic acid to extract the sugar derived from the hydrolysis of cellulose, and it was reused without further treatment. It was found that ionic liquid possessed excellent stability, and the conversion of cellulose almost kept constant during the recycles. The fresh and recovered sulfonated catalysts were characterized by means of TGA and IR, and the recovered catalyst was reused with/without treatment with acid. The catalytic activity almost kept constant in the case of regenerating by sulphuric acid prior to reuse, but a significant loss of activity was observed without regeneration. The results revealed that there may be an ion exchange process between the acidic sites of sulfonated catalyst and ionic liquid during the hydrolysis of cellulose. © 2013 Published by Elsevier B.V.
语种：
英文
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Preparation and characterization of Al2 O3 Nanoparticles with dodecyl trimethyl ammonium bromide as surfactant
作者：
Wang, Min;Dan, Weiyi;Li, Jianfen* ;Ding, Jiefeng;Zhou, Guoqing;...
期刊：
Applied Mechanics and Materials ,2013年401-403:800-803 ISSN：1660-9336
通讯作者：
Li, Jianfen
作者机构：
[Wang, Qiangsheng; Ding, Jiefeng; Li, Jianfen; Zhou, Guoqing; Wang, Min; Dan, Weiyi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Li, Jianfen] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
会议名称：
3rd International Conference on Frontiers of Manufacturing Science and Measuring Technology, ICFMM 2013
会议时间：
30 July 2013 through 31 July 2013
会议地点：
LiJiang, PEOPLES R CHINA
会议主办单位：
[Wang, Min;Dan, Weiyi;Li, Jianfen;Ding, Jiefeng;Zhou, Guoqing;Wang, Qiangsheng] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
Alumina;Homogeneous precipitation method;Nanomaterial;Preparation
摘要：
Nano-Al<inf>2</inf>O<inf>3</inf> has been synthesized by homogeneous precipitation method using dodecyl trimethyl ammonium bromide (DTAB) as surfactant. The as-prepared powder was characterized by FT-IR, XRD, TEM and SEM. The results indicate the surfactant existence in the precursors but disappeared in the products. This is mainly due to the combination of precursor and surfactant, which results in particles of nanosize. The nucleation and growth rate during the precipitation has also been controlled by the addition of surfactant. During the calcination process, the surfactant has decomposed and volatilized into air. The XRD characterization shows the calcined powders were γ-Al<inf>2</inf>O<inf>3</inf> particles with mean size of 27 nm, which was in accordance with TEM characterization. The morphology of the prepared alumina particles has also been investigated by SEM and showed that the powder has a spherical morphology with a uniform particle size. ©(2013) Trans Tech Publications, Switzerland.
语种：
英文
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A high performance antioxidative and acid resistant membrane prepared by interfacial polymerization for CO2 separation from flue gas
作者：
Wang, Mingming* ;Wang, Zhi;Li, Shichun;Zhang, Chenxin;Wang, Jixiao;...
期刊：
Energy & Environmental Science ,2013年6(2):539-551 ISSN：1754-5692
通讯作者：
Wang, Mingming
作者机构：
[Li, Shichun; Wang, Zhi; Wang, Mingming; Zhang, Chenxin; Wang, Jixiao; Wang, Shichang] Tianjin Univ, Chem Engn Res Ctr, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China.;[Li, Shichun; Wang, Zhi; Wang, Mingming; Zhang, Chenxin; Wang, Jixiao] Tianjin Univ, State Key Lab Chem Engn, Tianjin 300072, Peoples R China.;[Li, Shichun; Wang, Zhi; Wang, Mingming; Zhang, Chenxin; Wang, Jixiao; Wang, Shichang] Tianjin Univ, Tianjin Key Lab Membrane Sci & Desalinat Technol, Tianjin 300072, Peoples R China.;[Wang, Mingming] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Wang, Mingming] T;Tianjin Univ, Chem Engn Res Ctr, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China.
摘要：
An antioxidative composite membrane was developed by interfacial polymerization of trimesoyl chloride and sodium 3,5-diaminobenzoate on a cross-linked polydimethylsiloxane coating polysulfone membrane. Diethylene glycol bis(3-aminopropyl) ether was added into the aqueous phase to improve CO2 permeance by the CO2-philic group, namely ether oxygen. Attenuated total reflectance-Fourier transform infrared resonance spectroscopy and scanning electron microscopy were used to characterize the composite membranes. The effects of the molar ratio of monomers in the aqueous phase and the concentrations of monomers in both the aqueous phase and the organic phase were investigated to obtain higher permselectivity. For CO 2/N2 gas mixture (15/85 by volume), the optimized membrane displays a CO2 permeance of 5831 GPU and CO2/N 2 selectivity of 86 at 0.11 MPa feed pressure. Moreover, the membrane shows excellent antioxidizability and acid resistance. Finally, the economic evaluation of the membranes prepared in this work for flue gas separation was carried out. A two-stage membrane system using the membrane prepared in this work shows cost-competition compared with the traditional chemical absorption method. © The Royal Society of Chemistry 2013.
语种：
英文
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Synthesis and characterization of ball-in-ball CuSCN hollow architecture
作者：
Chai, Bo* ;Wang, Min;Wang, Zhan;Wang, Yourong;Zhu, Yuchan
期刊：
Materials Letters ,2013年93(Feb.15):56-59 ISSN：0167-577X
通讯作者：
Chai, Bo
作者机构：
[Zhu, Yuchan; Wang, Yourong; Chai, Bo; Wang, Min; Wang, Zhan] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Chai, Bo] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Aqueous solution methods;Ball-in-ball;Band gap energy;BET specific surface area;CuSCN;Diffuse reflectance;Experimental observation;Field emission scanning electron microscopy;Formation mechanism;Hollow sphere;Mesoporous structures;Nitrogen adsorption-desorption;One pot;Optical measurement;Poly(vinyl pyrrolidone);Room temperature;Solubility product;Solution methods;Field emission microscopes;Optical data processing;Photoelectrons;Transmission electron microscopy;X ray diffraction;X ray photoelectron spectroscopy;Architecture
摘要：
Ball-in-ball CuSCN hollow architecture is successfully synthesized by a facile one-pot aqueous solution method in the presence of poly(vinylpyrrolidone) at room temperature. The as-synthesized products are characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance absorption spectra (DRS) and nitrogen adsorption-desorption measurement. A possible formation mechanism for CuSCN hollow spheres by the difference of solubility products (Ksp) of CuBr and CuSCN or chemical self-transformation is proposed based on the experimental observations. The band gap energy of hollow CuSCN sphere is estimated to be 3.77 eV based on the results of optical measurement. The BET specific surface area of ball-in-ball CuSCN hollow architecture is calculated to be 30.5 m2/g and it has a bimodal mesoporous structure from nitrogen adsorption-desorption investigation. © 2012 Elsevier B.V.
语种：
英文
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