期刊论文

中文

水处理技术

1000-3770

2022

48

3

74-78

10.16796/j.cnki.1000-3770.2022.03.015

中央级公益性科研院所基本科研业务专项（PM-zx703-202002-079,PM-zx097-201904-085）；

本校为第一机构

以海藻酸钙（CA）、绿茶提取液为原料，绿色合成海藻酸钙-铁复合微球（GT-Fe NPs@CA），作为类芬顿反应催化剂降解水中亚甲基蓝（MB）。通过SEM/EDS、FT-IR等方法对材料微观结构进行表征和分析。研究催化剂活化H2O2降解MB的影响因素及其反应动力学。结果表明，在pH 3.0～11.0的范围内，GT-Fe NPs@CA/H2O2对MB去除效果稳定，铁浸出量低。本研究的最佳去除条件是pH为3.0，催化剂投加量5.0 g/L,H2O2用量10 mmol/L，反应240min后，MB去除率可达99%。反应符合准二级动力学模型（R~2=0.999），包括复合材料的吸附作用和其作为催化剂诱发的类芬顿氧化作用。

GT-Fe NPs@CA was synthesized using CA and green tee extract in the study,and were used to degrade methylene blue (MB) in aqueous phase as a Fenton-like catalyst.The characteristics of the composites were characterized by SEM,EDS and FTIR,and the influencing factors,thermodynamics and kinetics of the reaction were investigated systematically.The results indicated that GT-Fe NPs@CA/H2O2 was effective in MB removal in a wide range of pH from 3.0 to 11.0,with the low leaching rate of iron.After 240 min,the highest removal efficiency (99%) of MB (10...