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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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  • [1] LONG J, JIAO A, WEI B, et al.A novel method for pullulanase immobilized onto magnetic chitosan/Fe3O4 composite nanoparticles by in situ preparation and evaluation of the enzyme stability[J].Journal of Molecular Catalysis B Enzymatic,2014,9:53-61
    [2] SAFARI J, JAVADIAN L.Ultrasound assisted the green synthesis of 2-amino-4H-chromene derivatives catalyzed by Fe3O4-functionalized nanoparticles with chitosan as a novel and reusable magnetic catalyst[J].Ultrasonics Sonochemistry,2015,2:341-348
    [3] SUD D,MAHAJAN G,KAUR M P.Agricultural waste material as potential adsorbent for sequestering heavy metal ions from aqueous solutions:A review[J].Bioresource Technology,2008,9(14):6017-6027
    [4] JARVIS P, JEFFERSON B, PARSONS S A.Breakage, regrowth, and fractal nature of natural organic matter flocs[J].Environmental Science & Technology,2005,9(7):2307-2314
    [5] HE N,LI Y,CHEN J.Production of a novel polygalacturonic acidbioflocculant REA-1 by Corynebacterium glutamicum[J].Bioresource Technology,2004,4(1):99-105
    [6] ZHANG X L,ZHANG C,LONG Y G.Study onefficient environmental protection technology of heavy metalpolluted water[J].Environmental Protection Science,2010,6(5):29-32
    [7] 杨越冬, 周永国, 侯文龙, 等.应用于生物医学领域的化学改性壳聚糖[J].高分子通报,2006(2):52-58
    [8] 谢宇,熊艳,史少欣,等.O-羧甲基壳聚糖的制备及其对 Ni2+吸附性能研究[J].水处理技术,2009,5(3):39-42
    [9] 韩小茜,马长鹏,仵佩佩.功能化壳聚糖磁性微球的制备及其对Cu2+的吸附行为[J].化工新型材料,2016,44(10):88-90
    [10] 于琪,胡勇有,雷志斌.改性壳聚糖CAD 与微生物絮凝剂MBFX-8复配絮凝研究[J].环境科学学报,2013,1(33):2999-3006
    [11] 王维清,冯启明,董发勤,等.磁性膨润土的制备及其性能[J].硅酸盐学报,2010,8(4):684-688
    [12] 周利民,王一平,刘峙嵘,等.磁性羧甲基化壳聚糖纳米粒子吸附铂和钯[J].北京科技大学学报,2009,1(1):88-92
    [13] 冯敬利.改性海泡石纤维/微生物混凝剂的制备与性能研究[D].天津:河北工业大学,2014
    [14] ALBERI G, BALDRACCHINI F.X-ray diffraction in crystals, imperfect crystals, and amorphous bodies[J].Physics Today,1964,7(4):70-72
    [15] SHUANG C, WANG M, ZHOU Q, et al.Enhanced adsorption and antifouling performance of anion-exchange resin by the effect of incorporated Fe3O4 for removing humic acid[J].Water Research,2013,7(16):6406-6414
    [16] LIAO M H, CHEN D H.Preparation and characterization of a novel magnetic nano-adsorbent[J].Journal of Materials Chemistry,2002,2:3654-3659
    [17] BHATTACHARYA A,RAWLINS J W,RAY P.Polymer grafting and crosslinking[J].Journal of the American Chemical Society,2009,1(20):7204
    [18] CAI H, ZHANG Z P, SUN P C, et al.Synthesis and characterization of thermo-and pH-sensitive hydrogels based on chitosan-grafted nisopropylacrylamide via γ-radiation[J].Radiation Physics & Chemistry, 2005,4(1):26-30
    [19] KALANTARI K, AHMAD M B, MASOUMI H R F, et al.Rapid and high capacity adsorption of heavy metals by Fe3O4/montmorillonite nanocomposite using response surface methodology: Preparation, characterization, optimization, equilibrium isotherms, and adsorption kinetics study[J].Journal of the Taiwan Institute of Chemical Engineers,2015,9(1):192-198
    [20] CHANG H,CHAI L Y,WANG Y,et al.Study on equilibrium of hydroxyl complex ions in Cu2+-H2O system[J].Mining and Metallurgical Enginieering,2007,7(6):37-40
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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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