Adsorption of Cu^(2+)by Crosslinked Graft Copolymers of Starch

Xue Cai; Tao Lin; Neng Zhang; Xiaoyao Wei; Xuefeng Yin

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Adsorption of Cu^(2+)by Crosslinked Graft Copolymers of Starch

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With the use of acrylic acid(AA)as a monomer,humic acid(HA)and starch as raw materials,potassium persulfate(KPS)as initiator,and N,Ndimethylacrylamide(MBA)as a cross-linking agent,AA/HA/Starch graft copolymer was prepared and characterized by SEM and FT-IR.The effects of temperature,adsorption time,adsorbent dosage,pH value and Cu^(2+)initial concentration of the solution on the adsorption performance of the crosslinked graft copolymer were also investigated.The results showed that the Cu^(2+)adsorption capacity of the AA/HA/Starch graft copolymer increased firstly and then decreased with increasing adsorbent dosage and the initial pH value of Cu^(2+)solution.With the increase of Cu^(2+)initial concentration and the extension of adsorption time,the adsorption amount of Cu^(2+)increased rapidly and then stabilized.And it decreased slightly with the increase of temperature.At pH value of 5.5,temperature of 298 K,adsorbent dosage of 50 mg,adsorption time of 125 min,and 100 mL Cu^(2+)solution with Cu^(2+)initial concentration of 100 mg/L,the Cu^(2+)adsorption capacity of the crosslinked graft copolymer was 238 mg/g.The adsorption of Cu^(2+)by the adsorbent followed the pseudo-second-order kinetic equation and Langmuir isothermal adsorption model,and the adsorption was attached to monolayer chemical adsorption.This study proved that AA/HA/Starch graft copolymer could be used as an efficient adsorbent for the removal of harmful and toxic metal cations such as Cu^(2+)from industrial wastewater.

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《造纸与生物质材料：英文版》 |2021年第1期|P.50-60|共11页
作者
Xue Cai; Tao Lin; Neng Zhang; Xiaoyao Wei; Xuefeng Yin;
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作者单位

College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 ChinaShaanxi Province Key Lab of Papermaking Technology and Specialty Paper Key Lab of Auxiliary Chemistry&Technology for Chemical Industry Ministry of Education Xi''an Shaanxi Province 710021 ChinaNational Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 ChinaShaanxi Province Key Lab of Papermaking Technology and Specialty Paper Key Lab of Auxiliary Chemistry&Technology for Chemical Industry Ministry of Education Xi''an Shaanxi Province 710021 ChinaNational Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 ChinaShaanxi Province Key Lab of Papermaking Technology and Specialty Paper Key Lab of Auxiliary Chemistry&Technology for Chemical Industry Ministry of Education Xi''an Shaanxi Province 710021 ChinaNational Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 ChinaShaanxi Province Key Lab of Papermaking Technology and Specialty Paper Key Lab of Auxiliary Chemistry&Technology for Chemical Industry Ministry of Education Xi''an Shaanxi Province 710021 ChinaNational Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 ChinaShaanxi Province Key Lab of Papermaking Technology and Specialty Paper Key Lab of Auxiliary Chemistry&Technology for Chemical Industry Ministry of Education Xi''an Shaanxi Province 710021 ChinaNational Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi University of Science&Technology Xi''an Shaanxi Province 710021 China;

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正文语种 chi
中图分类物理化学（理论化学）、化学物理学;
关键词
humic acid; starch; acrylic acid; adsorption materials; Cu^(2+);

机译：腐殖酸;淀粉;丙烯酸;吸附材料;Cu ^（2+）;

Adsorption of Cu^(2+)by Crosslinked Graft Copolymers of Starch

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