文献类型：期刊文献

英文题名：Superior adsorption capacity of functionalised straw adsorbent for dyes and heavy-metal ions

作者：Liu, Qiming[1];Li, Yaoyue[1];Chen, Huafeng[1];Lu, Jian[1];Yu, Guangsuo[2];Moslang, Maxim[3];Zhou, Yanbo[1,4]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Clean Coal Technol, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]HSR Univ Appl Sci Rapperswil, Inst Umwelt & Verfahrenstech UMTEC, Oberseestr 10, CH-8640 Rapperswil, Switzerland;[4]Shanghai Inst Pollut Control & Ecol Secur, 1515 Zhongshan Second North Rd, Shanghai 200092, Peoples R China

年份：2020

卷号：382

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20193507375798);WOS:【SCI-EXPANDED(收录号:WOS:000501387100047)】；

基金：The authors would like to express their sincere gratitude to the National Natural Science Foundation of China (51778230), National key research and development program (2017YFB06026), Shanghai Rising-Star Program (17QA1401000), and the Fundamental Research Funds for the Central Universities for their financial support.

语种：英文

外文关键词：Straw; Dyeing wastewater; Dye; Heavy metals; Adsorption

摘要：Dyes and heavy-metal ions are common pollutants in printing and dyeing wastewater, and are thus attracting considerable attention. Herein, an eco-friendly straw-based adsorbent, WS-CA-AM, was prepared by grafting with acrylamide (AM) and citric acid (CA) groups to remove representative dyes and heavy metals from aqueous solution. The adsorption capacities of WS-CA-AM for methyl orange (MO) and methylene blue (MB) were 3053.48 and 120.84 mg/g, which were 54 and 3 times those of unmodified straw, respectively. Moreover, the adsorption capacities for MB, MO, Cr2O72- and Cu2+ in the mixed system increased by 210%, 133%, 196% and 151%, respectively, compared with those in the single system. The significant increase in adsorption capacity can be attributed to the collaborative effect through electrostatic attraction. The functional groups and adsorbed pollutants all served as adsorption sites for pollutants. These results indicate that WS-CA-AM is a potential applicant for the removal of dyes and heavy-metal ions from mixed aqueous solution.