摘要
采用巢湖自然水体沉积物对Cu^(2+)和Pb^(2+)吸附研究,初步研究了投加量、温度、时间、pH值等方面对其吸附结果的影响,在吸附实验中,拟二级动力模型优于拟一级动力学模型,Pb^(2+)和Cu^(2+)在缓流水体沉积物上的吸附行为更适合用Langmuir吸附等温模型来描述。红外光谱(FTIR)显示缓流水体沉积物中存在羟基、氨基、烷基、含氧基团等,这些基团对Pb^(2+)和Cu^(2+)的去除起了关键性的作用;XRD显示缓流水体沉积物表面的物质为SiO_(2)、CaCO_(3)。
The adsorption of Cu^(2+) and Pb^(2+) by sediments from Chaohu Lake was studied.The effects of dosage,temperature,time and pH value on the adsorption of Cu^(2+) and Pb^(2+) were preliminarily studied.In the adsorption experiment,the pseudo-secondorder dynamic model was superior to the pseudo-first-order dynamic model.The adsorption behavior of Pb^(2+) and Cu^(2+) on slow-flow sediments is more suitable to be described by Langmuir adsorption isotherm model.Infrared spectroscopy(FTIR)showed that there were hydroxyl,amino,alkyl and oxygen-containing groups in the sediments of slow-flow water,and these groups played a key role in the removal of Pb^(2+) and Cu^(2+).XRD shows that the substances on the surface of sediments in slow flow water body are SiO_(2) and CaCO_(3).
作者
袁宇杰
杨英
储明
王吉龙
吴亮
周雨桐
张田田
YUAN Yujie;YANG Ying;CHU Ming;WANG Jilong;WU Liang;ZHOU Yutong;ZHANG Tiantian(School of Environmental and Energy Engineering,Anhui Jianzhu University,Hefei Anhui 230601,China)
出处
《阜阳师范大学学报（自然科学版）》
2022年第1期41-46,共6页
Journal of Fuyang Normal University:Natural Science
基金
国家自然科学基金(51978003)
安徽省科技重大专项(201903a06020034
17030801028)。
