期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：4
页码：042047
DOI：10.1088/1755-1315/199/4/042047
语种：English
出版社：IOP Publishing
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.
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