Natural Science Foundation of Guangdong Province [2023A1515012134, 2022A1515010368]; Characteristic Innovation Projects Guangdong Provincial Department of Education (Natural Science Category) [2021KQNCX084]; Shaoguan University Research Project [SZ2020KJ04]
机构署名：
本校为其他机构
院系归属：
化学与环境工程学院
摘要：
Surface modification is one of the most important approach for improving the reactivity of zero-valent iron. In this study, waste coffee grounds (CG) were chosen to modify zero-valent iron through a mechanochemical method. The synthesized CG-ZVI exhibited a 166 times faster Cr(VI) removal rate. Structural characterization and ATR-FTIR analysis indicated that CG modification endowed ZVI with abundant carboxylic acid groups, and accelerated the adsorption of Cr(VI) via the complexation effect of CG-COOH center dot center dot center dot HCrO4 � ....
