Effective of Xanthate Modified Chitosan on the Adsorption of Lead Ions

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Li, Tianguo^1,2 ; Niu, Tingyu^1 ; Huang, Shaojuan^1 ; Du, Guangzu^3 ; Li, Bo^1,2 ; Zhan, Fangdong^1,2 ; Jiang, Ming^1,2 ; He, Yongmei^1,2

College of Resources and Environment, Yunnan Agricultural University, Kunming

650201, China^1

Innovation Team for Farmland Non-pollution Production of Yunnan Province, Yunnan Agricultural University, Kunming

650201, China^2

College of Plant Protection, Yunnan Agricultural University, Kunming

650201, China^3

关键词: Adsorption capacities;    Adsorption characteristic;    Adsorption properties;    Effect of temperature;    Modified chitosan;    Pseudo second order kinetics;    Simulated wastewater;    Static adsorption;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/4/042047/pdf
DOI  :  10.1088/1755-1315/199/4/042047

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Water lead pollution has a serious threaten to safety of food and ecological. How purify lead polluted wastewater efficiently become an important environmental topic. This study aimed to investigate the effect of the xanthate modified chitosan (XCS) on the adsorption properties of toxic lead from simulated wastewater via static adsorption method. Results showed that the adsorption of lead of both chitosan and XCS depend on solution pH obviously and the optimal pH of 5. The adsorption characteristics of the two adsorbents for lead ions accord with the pseudo-second order kinetics. But the xanthate modify can improve the rate of lead adsorption effectively. Adsorption of lead ions on chitosan follow the Langmuir model, and that of XCS conform to the Freundlich model. However, the effect of temperature on the adsorption capacity was none difference. The lead maximum adsorption capacity of original chitosan and XCS at 40°C was 194.36 mg/g and 317.82 mg/g respectively. The results showed that xanthate modify can improve the adsorption of lead on chitosan and XCS would has great potential for practical application.