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MBFX-8/磁性Fe3O4@CMC复合絮凝剂的制备及对Cu2+的去除

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郭振华, 刘中桃, 沈伯雄, 马影利, 孙境求. MBFX-8/磁性Fe3O4@CMC复合絮凝剂的制备及对Cu2+的去除[J]. 环境工程学报, 2018, 12(2): 421-426. doi: 10.12030/j.cjee.201706176
引用本文: 郭振华, 刘中桃, 沈伯雄, 马影利, 孙境求. MBFX-8/磁性Fe3O4@CMC复合絮凝剂的制备及对Cu2+的去除[J]. 环境工程学报, 2018, 12(2): 421-426. doi: 10.12030/j.cjee.201706176
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GUO Zhenhua, LIU Zhongtao, SHEN Boxiong, MA Yingli, SUN Jingqiu. Fabrication of MBFX-8/magnetic Fe3O4@CMC composite flocculant and its removal towards Cu2+[J]. Chinese Journal of Environmental Engineering, 2018, 12(2): 421-426. doi: 10.12030/j.cjee.201706176
Citation: GUO Zhenhua, LIU Zhongtao, SHEN Boxiong, MA Yingli, SUN Jingqiu. Fabrication of MBFX-8/magnetic Fe3O4@CMC composite flocculant and its removal towards Cu2+[J]. Chinese Journal of Environmental Engineering, 2018, 12(2): 421-426. doi: 10.12030/j.cjee.201706176
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MBFX-8/磁性Fe3O4@CMC复合絮凝剂的制备及对Cu2+的去除

  • 1.

    河北工业大学能源与环境工程学院,天津 300401

  • 2.

    中国科学院生态环境研究中心,中国科学院饮用水科学与技术重点实验室,北京 100085

  • 基金项目:

    国家自然科学基金资助项目(51541602)

Fabrication of MBFX-8/magnetic Fe3O4@CMC composite flocculant and its removal towards Cu2+

  • 1.

    School of Energy and Environment Engineering, Hebei University of Technology, Tianjin 300401, China

  • 2.

    Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

  • Fund Project:

  • 摘要: 以微生物絮凝剂 MBFX-8、羧甲基壳聚糖CMC和磁性Fe3O4 为原料,制备了新型MBFX-8/磁性Fe3O4@CMC复合絮凝剂。采用FTIR和XRD 对新型复合絮凝剂进行表征。结果表明,羧甲基壳聚糖(CMC)已成功接枝在Fe3O4纳米粒子表面,而且MBFX-8也顺利掺入复合絮凝剂中。考察了MBFX-8与Fe3O4@CMC的质量比、pH、絮凝剂投加量和静置反应时间对Cu2+去除性能的影响。MBFX-8与Fe3O4@CMC的质量比为1∶5时,复合絮凝剂对Cu2+的去除率最好。复合絮凝剂对Cu2+的去除效果与溶液初始pH以及静置反应时间正相关,而与其投加量的增加呈先提高后降低的趋势。当溶液初始pH值为6.5,复合絮凝剂投加量为5 g·L-1,静置反应时间为3 h时,得到最优的Cu2+去除效果,达98.9%。
    Abstract: A novel MBFX-8/magnetic Fe3O4@CMC composite flocculant was fabricated by microbial flocculant MBFX-8, carboxymethyl chitosan (CMC) and magnetic Fe3O4. The composite flocculant was characterized by FTIR and XRD. The results indicated that CMC was successfully grafted on the surface of Fe3O4 nanoparticles. We have investigated the influence of mass ratio between MBFX-8 and Fe3O4@CMC, initial pH, flocculant dosage and reaction time on the removal of Cu2+ ions. Highest removal rate of Cu2+ was achieved at the mass ratio of 1∶5 between MBFX-8 and Fe3O4@CMC. The removal rate of Cu2+ was positively correlated with initial pH and reaction time. But the removal rate of Cu2+ increased first and then decreased with the increase of flocculant dosage. The optimized removal rate of Cu2+ reached to 98.9% when the initial pH was 6.5, flocculant dosage was 5 g·L-1, and reaction time was 3 h.
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  • 刊出日期:  2018-02-08

MBFX-8/磁性Fe3O4@CMC复合絮凝剂的制备及对Cu2+的去除

  • 1. 河北工业大学能源与环境工程学院,天津 300401
  • 2. 中国科学院生态环境研究中心,中国科学院饮用水科学与技术重点实验室,北京 100085
基金项目:

国家自然科学基金资助项目(51541602)

摘要: 以微生物絮凝剂 MBFX-8、羧甲基壳聚糖CMC和磁性Fe3O4 为原料,制备了新型MBFX-8/磁性Fe3O4@CMC复合絮凝剂。采用FTIR和XRD 对新型复合絮凝剂进行表征。结果表明,羧甲基壳聚糖(CMC)已成功接枝在Fe3O4纳米粒子表面,而且MBFX-8也顺利掺入复合絮凝剂中。考察了MBFX-8与Fe3O4@CMC的质量比、pH、絮凝剂投加量和静置反应时间对Cu2+去除性能的影响。MBFX-8与Fe3O4@CMC的质量比为1∶5时,复合絮凝剂对Cu2+的去除率最好。复合絮凝剂对Cu2+的去除效果与溶液初始pH以及静置反应时间正相关,而与其投加量的增加呈先提高后降低的趋势。当溶液初始pH值为6.5,复合絮凝剂投加量为5 g·L-1,静置反应时间为3 h时,得到最优的Cu2+去除效果,达98.9%。

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