环境工程学报2012，Vol.6Issue(7)：2339-2344,6.
亚甲基蓝在污泥活性炭上的吸附
Absorption of methylene blue on sludge activated carbon
摘要
Abstract
The sludge activated carbon was prepared from sludge using ZnC12 as chemical activating rea- gent. The effects of the initial pH, absorption temperature and ionic strength on adsorption for methylene blue were studied. The experimental results showed that the adsorption capacity increased with the increase of pH val- ue, and the absorbing effect of the sludge activated carbon on methylene blue can reach best under alkaline con- ditions. At the range of 15 ~ 55~C, the adsorption capability of the sludge activated carbon first increased and then decreased. The maximum adsorption capacity achieved when the temperature was up to 35~C. The adsorp- tion capacity of activated carbon would become weaker by adding sodium chloride, but with the ionic strength in- creased, and the degree of weakening reduced. Thermodynamic behavior indicated that the adsorption of the sludge activated carbon on methylene blue obeyed the Langmuir isotherm equation. Kinetic studies showed that the adsorption of the sludge activated carbon on methylene blue was in line with response characteristics of sec- ond-order reaction kinetics.关键词
污泥/活性炭/亚甲基蓝/吸附热力学/吸附动力学Key words
sludge/activated carbon/methylene blue/adsorption thermodynamics/adsorption kineticics分类
资源环境引用本文复制引用
刘亚纳,周鸣,汤红妍,苗娟,朱书法..亚甲基蓝在污泥活性炭上的吸附[J].环境工程学报,2012,6(7):2339-2344,6.基金项目
河南省教育厅自然科学研究计划项目 （）
河南科技大学博士科研启动基金资助项目 （）
河南科技大学青年基金资助项目 （）
