Magnetic Hydrogels for Removal of Humic Acid from Aqueous Environment

摘要：

Magnetic cationic hydrogels (MCH) were synthesized and its removal efficiency and mechanisms to humic acid (HA) from the aqueous environment were studied in this paper. MCH synthesized had a low swelling ratio and the strong magnetism, yielding extra potential for recycle and reuse of hydrogels. XRD analysis and dissolution experimental results indicated that γ-Fe2O3 was stably embedded into hydrogels. Batch studies indicated that the removal of HA by MCH was effective. Electrostatic adsorption was considered to be main removal mechanisms of HA. Solution environments with low pH and high ionic strength were unfavorable for HA removal. 10% NaCl solution was effective to regenerate MCH saturated by HA. MCH was found still to retain high adsorption capacity to HA after three cycles.

作者: Pinhua RAO Irene M.C.LO

作者单位: School of Chemistry and Chemical Engineering Shanghai University of Engineering Science,Shanghai 201 Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technolog

会议类型: 国际会议

会议名称: The 4th International Conference on Bioinformatics and Biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

会议地点: 成都

会议语种:英文

页码: 1-4

在线出版日期: 2010-06-18（万方平台首次上网日期，不代表论文的发表时间）