环境工程学报2017，Vol.11Issue(4)：2205-2211,7.DOI:10.12030/j.cjee.201601079
酸碱改性活性炭吸附微污染水源水中的Ni2+
Adsorption of Ni2+ from micro-polluted source water by acid-alkali-modified activated carbon
程文慧 1罗建中 1娄继琛 1何潇1
作者信息
- 1. 广东工业大学环境科学与工程学院,广州510006
- 折叠
摘要
Abstract
Activated carbon (AC) was modified by HNO3-KOH and characterized by scanning electron microscopy,N2 Brunauer-Emmett-Teller (BET) adsorption analysis,Fourier transform infrared spectrometry,and Boehm titration.The adsorption behavior of Ni2 + obtained from micro-polluted source water by AC and modified AC,under different conditions,was studied.More acidic oxygen-containing functional groups were observed on the surface,and the BET surface area and the total pore volume decreased slightly,with no obvious change in pore size after modification.With the addition of 5.0 g · L-1 of modified AC,the Ni2 + removal efficiency after 1 h of reaction was 95.55％,with the Ni2+ concentration decreasing from 0.4 mg · L-1 to 0.017 8 mg · L-1.This was below the standard for the Standards for Drinking Water Quality in 2006 (GB5749-2006),and only 74.45％ of Ni2+ was removed by AC under the same condition.The kinetic data were well described by the pseudo-second order model,and the equilibrium adsorption data fit better to the Langmuir model.关键词
改性活性炭/吸附/微污染水源水/镍Key words
modified activated carbon/adsorption/slightly-polluted source water/nickel分类
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程文慧,罗建中,娄继琛,何潇..酸碱改性活性炭吸附微污染水源水中的Ni2+[J].环境工程学报,2017,11(4):2205-2211,7.
