Adsorption Properties of Microwave Modified Diatomite on Heavy Metals in Landfill Leachate

2018 2nd International Conference on Environmental and Energy Engineering

生态环境科学;能源学

Cheng, H.Y.^1 ; Yang, A.L.^1 ; Zhang, Y.T.^1 ; Kong, X.M.^1

School of Environmental Science and Engineering, Xiamen University of Technology, 600 Ligong Road, Xiamen

361024, China^1

关键词: Adsorbent dosage;    Adsorption conditions;    Adsorption properties;    Adsorption removal;    Adsorption temperature;    Landfill leachates;    Low ionic strength;    Microwave modification;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/146/1/012019/pdf
DOI  :  10.1088/1755-1315/146/1/012019

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Adsorption properties of diatomite modified by microwave on lead, chromium and cadmium in landfill leachate under different conditions were studied with diatomite as adsorbent, and the best microwave modification conditions were determined in this study. Meanwhile, the adsorption and removal effects of diatomite on Pb, Cr and Cd in landfill leachate under different adsorption conditions were investigated and which including adsorbent dosage, adsorption time, temperature, pH and the ion strength. The results showed that the best adsorption removal efficient of heavy metal ion in landfill leachate can be obtained under the adsorption conditions of low ionic strength, alkaline leachate, with adsorption temperature of 25 °C , the adsorption time of 40 min, and the modified diatomite dosing quantity of 5∼10g/L.