ADSORPTION BEHAVIORS OF NI(Ⅱ) ION ON A NOVEL SULFONIC STARCH ADSORBENT
This study investigated the adsorption of Ni(Ⅱ) from an aqueous solutions by a novel sulfonic starch adsorbent, which was prepared by graft copolymerization of crosslinked corn starch with acrylamide followed by sulfomethylation of the graft copolymer with formaldehyde and sodium bisulfate. Static experiments were conducted as function of pH, initial amino acid concentration, adsorption time and temperature. The equilibrium adsorption data of the Ni(Ⅱ) ion on adsorbent were analyzed by Langmuir and Freundlich models. Thermodynamics studies indicated that the adsorption process was exothermal and was controlled by chemical adsorption.
starch sulfomethylation adsorbent adsorption Ni(II) ion
Liu Minghua Liu Yifan Rui Fangxin Lin Zhaohui
College of Environment & Resources, Fuzhou University, Fuzhou, 350108, China
国际会议
广州
英文
117-120
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）