文档介绍：
活性炭对垃圾渗滤液中全氟化合物吸附效
果的研究#
张雯雯,张春晖,宁可**
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(中国矿业大学(北京)化学与环境工程学院,北京 100083)
摘要:考察了煤质活性炭对垃圾渗滤液中五种全氟化合物的去除效果,确定了活性炭的最佳
投加量、吸附时间和 pH 值。试验结果表明,当活性炭的投加量为 10g/L,吸附时间为 120min,
垃圾渗滤液 pH 值为 7 时,活性炭对五种全氟化合物基本达到吸附饱和,去除率在 %~
%之间,去除效果依次为:PFOA>PFHpA>PFHxA>PFNA>PFDoDA。研究结果还表明,
活性炭对五种全氟化合物的吸附动力学拟合方程不完全相同,但内扩散模型拟合效果均较
好。
关键词:垃圾渗滤液;活性炭;全氟化合物;吸附
中图分类号:X52
Reseacrh on Adsorption Effect of PFCs in Landfill Leachate
on Activated Carbons
ZHANG Wenwen, ZHANG Chunhui, NING Ke
(China University of Mining & Technology(Beijing), Environmental Engineering,
Beijing 100083)
Abstract: Removal of five pounds (PFCs) in landfill leachate by adsorption on
coal based activated carbon was investigated, and the best dosage of activated carbon, adsorption
time and pH of the leachate was determined. The results demonstrate that it can achive optimal
removal efficiency with activated carbon dosage of 10g / L and leachate pH of 7. The adsorption
saturation for five PFCs could be achived in 120min. The removal efficiencies were between
%~%, and the sequence was PFOA>PFHpA>PFHxA>PFNA>PFDoDA. The results
also demonstrate that the five PFOs on activated carbon adsorption ic equation was not
identical, but all can be fitted by the within diffusion model.
Keywords: landfill leachate; activated carbons; PFCs; adsorption
0 引言
垃圾渗滤液,又称垃圾渗沥液或浸出液,是指垃圾在堆放和填