摘要
采用微波辐射的方法成功地将乙二胺四乙酸(EDTA)修饰到凹凸棒土表面,通过傅里叶红外光谱、扫描电子显微镜等对修饰效果进行表征。研究表明:EDTA改性后的凹凸棒土能较好地去除重金属废水中的Cr^(6+)。且在溶液体系条件为中性或弱碱性,EDTA与凹凸棒土配比在一定范围内时,其对Cr^(6+)去除率可稳定在90%以上。
The modified EDTA was successfully modified onto the attapulgite by microwave radiation. The modification effect was characterized by Fourier transform infrared spectroscopy and scanning electron microscope. The results show that the attapulgite modified by EDTA could effectively remove Cr^6＋ ions. The pH value of the solution is neutral or weak alkaline, and when the amount of EDTA and attapulgite is within a certain range, the removal rate of Cr^6＋ ions can reach 90%
出处
《广东化工》
CAS
2017年第15期68-69,共2页
Guangdong Chemical Industry
基金
江苏省大学生科技创新指导项目(201511276065X)
南京工程学院大学生科技创新基金挑战杯支撑项目(TZ20170024)
