期刊论文

Effect of pH Value on Adsorption of Phosphate in Water by Magnetic Calcium Particle Modified Biochar

中文

绿色科技

1674-9944

2023

25

22

204-207,214

10.3969/j.issn.1674-9944.2023.22.038

2021-05:武汉大学海绵城市建设水系统科学湖北省重点实验室开放基金

本校为第一机构

以花生壳为原料,牡蛎壳和氧化铁为改性剂,在 800℃的热解温度下制备了磁性颗粒状钙改性生物炭(CCaBC1∶1,CCaBC2∶1,CCaBC3∶1,CCaBC1∶2),以此来吸附磷酸盐.探究了不同初始 pH值条件对磁性颗粒状钙改性生物炭吸附磷酸盐效果的影响,并对比不同花生壳与氧化铁质量比生物炭之间的差异.结果表明:pH 值对磁性颗粒状钙改性花生壳生物炭吸附磷酸盐的性能有着显著影响,在适当的 pH 值范围,磁性颗粒状钙改性生物炭对磷酸盐的最大吸附量能达到 170 mg/g,说明该生物炭具有高效地去除水体中磷酸盐的能力,有作为一种高效性磷酸盐吸附剂缓解水体富营养化的潜力.

Magnetic granular calcium modified biochar(CCaBC1∶1,CCaBC2∶1,CCaBC3∶1,CCaBC 1∶2)was prepared at a pyrolysis temperature of 800℃ using peanut shell as raw material,oyster shell and iron oxide as modifier to adsorb phosphate.In this paper,the effects of different initial pH conditions on the adsorption effect of magnetic granular calcium-modified biochar on phosphate were explored,and the differences between different peanut shells and iron oxide mass ratio of biochar were compared.The results showed that pH had a significant effect on the p...