等离子体改性凹凸棒土接枝壳聚糖对含多氯联苯废液的吸附研究  

Research on Adsorption of Plasma Modified Grafting Attapulgite with Chitosan on Waste Liquid Containing 4,4'-Dichlorobiphenyl

作　　者：谭立强[1] 冯良东[1] 

机构地区：[1]淮阴工学院生命科学与化学工程学院,江苏省凹土资源利用重点实验室,江苏淮安223001

出　　处：《煤炭与化工》2013年第5期45-48,共4页Coal and Chemical Industry

摘　　要：运用低温等离子体改性技术将壳聚糖(CS)接枝到凹凸棒土(ATT)表面,并将其应用于含4,4'-二氯联苯(4,4'-DCB)废水溶液的吸附研究。FTIR光谱表征壳聚糖(CS)已成功接枝在等离子体改性凹凸棒土(CC-g-ATT)的表面。考察了吸附剂浓度、pH值等因素对4,4'-DCB吸附率的影响,实验结果证明CC-g-ATT对4,4'-DCB的吸附率远高于酸土,在pH值为2～7不同反应体系中,CC-g-ATT对4,4'-DCB吸附率较高且波动不大。CC-g-ATT对4,4'-DCB是一种较好的吸附剂。Plasma technique was applied to graft chitosan（CS）on attapulgite（ATT） to improve their dispersion property and sorption ability for polychlorinated biphenyls. The CS grafted attapulgite（CC-g-ATT）was analyzed using Fourier Transform Infrared（FT-IR）and the results indicated that CS was successfully grafted on the surfaces of attapulgite. The experimental factors such as solid content,pH value on the adsorption ratio of 4,4＇-dichlorobiphenyl（4,4＇-DCB）were investigated.Experimental results indicated that the sorption curve of CC-g-ATT on 4,4＇-DCB was much higher than that of 4,4＇-DCB on attapulgite and the sorption percentage of CC-g-ATT on 4,4＇-DCB fluctuated very little in pH range of 2-7. CC-g-ATTwasa suitable sorbentin the preconcentration and solidification of 4,4＇-DCB from aqueoussolutions.

关 键 词：等离子体 凹凸棒土 4 4'-二氯联苯 吸附 

分 类 号：O636[理学—高分子化学] X783[理学—化学]