Adsorption of HA Fractions with Different Molecular Weight on Magnetic Polyacrylic Anion Exchange Resin

摘要：

　　To investigate the effects of molecular weight (MW) on the adsorption by anion exchange resin,a commercial HA was fiactionated into four sizes:HAl (<1,000 Da),HA2 (1,000-2,500 Da),HA3 (2,500-1,0000 Da) and HA4 (>10,000 Da).The characterization reveals that aromaticity increases as the MW rises,while the negative charge follows the order:HA3>HA4>HA2>HA1.The adsorption maximum of HAs is 10.7,18.8,250,200 mg (TOC)/g for HA1,HA2,HA3,HA4,respectively.The results suggest that the effect of MW on adsorption is attributed to the different negative charge of HAs,and the effect of size exclusion is not observed.

关键词： Humic acid (HA) Molecular weight (MW) Magnetic resin Adsorption Ion exchange Kinetics

作者: Chendong Shuang Fei Pan Qing Zhou Mancheng Zhang Aimin Li Penghui Li

作者单位: State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment,Nanjing University,Nanjing 210046,China

会议类型: 国际会议

会议名称: the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))

会议地点: 杭州

会议语种:英文

页码: 97-99

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）