| This article has been：Browse 1401Times Download 1020Times |
scan it! |
|
|
| DOI：10.13522/j.cnki.ggps.20180240 |
|
| Using Modified Compost Clays to Adsorb Dye Pollutants in Water |
|
CHEN Wangxiang, LI Qiang, ZHU Zhenhua, WANG Xinglei, YAN Junjie, LIU Yunqing
|
|
College of Chemistry and Environmental Science，Yili Normal University, Yining 835000, China
|
| Abstract: |
| 【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. |
| Key words: dye; pollutants; adsorption; purification |
|
|
