摘要
【目的】探究一种新的污水中染料的吸附去除方法,为受污染的河道水体净化提供参考。【方法】通过将十六烷基三甲基溴化铵(CTMAB)和壳聚糖(CTS)复合改性蛭石作为一种新的吸附材料,以典型染料酸性大红模拟受污染水体,在单因素实验的基础上根据Box-Behnken中心组合设计原理,选取投加量、吸附温度和粒径3种因素为影响因子,酸性大红的去除率为响应值,采用3因素3水平响应面分析法,建立了二次多项式回归方程预测模型,确定了最佳吸附条件。【结果】投加量和吸附温度为显著因素,复合改性蛭石对酸性大红吸附的最佳条件为:复合改性蛭石投加量为0.35 g,吸附温度为25℃,粒径60~80目,在此条件下酸性大红的去除率可达95.9%。【结论】复合改性蛭石对模拟污染水体中酸性大红具有良好的吸附效果,使其在河道净水处理方面具有较好的应用前景。
【Objective】This paper presents a new method to remove dye pollutants from water by adsorption.【Method】The adsorption material was CTMAB/CTS vermiculite, a modified compound of cetyltrimethylammonium bromide and chitosan, and the typical acid scarlet served as the wastewater. Based on the single factor experiments and the principles of Box-Behnken central composite experimental design, the response surface methodology（RSM） with 3 factors and 3 levels was employed to study the removal rate of the acid scarlet. Here, the three factors referred to the effective elements of dosage, adsorption temperature and particle size. A quadratic polynomial regression equation was founded able to successfully predict the removal rate, through which the optimum adsorption conditions was gained.【Result】The parameters of the dosage and the adsorption temperature were the significant affecting adsorption. The optimal adsorption conditions were as follows： the modified vermiculite dosage was 0.35 g, the adsorption temperature was 25 ℃, the modified vermiculite particle size was 60-80 mesh.Under these condition, the removal rate of acid scarlet could reached 95.9%.【Conclusion】The modified vermiculite had a good adsorption capacity to the acid scarlet in the studied polluted water and is therefor able to purify pollutants in rivers.
作者
陈望香
李强
朱振华
王兴磊
闫俊杰
刘云庆
CHEN Wangxiang;LI Qiang;ZHU Zhenhua;WANG Xinglei;YAN Junjie;LIU Yunqing(College of Chemistry and Environmental Science,Yili Normal University,Yining 835000,China)
出处
《灌溉排水学报》
CSCD
北大核心
2018年第9期116-122,共7页
Journal of Irrigation and Drainage
基金
新疆维吾尔自治区自然科学基金青年项目(201442137-28)
关键词
染料
污染物
吸附
净化
dye
pollutants
adsorption
purification
