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| Fabrication of CNFM and its application in soil remediation of heavy metals coupled with electrokinetic technology |
| SHAN Wen-pan1, HUANG Man-hong1,2, LI Xiao-chun1, ZHANG Cui-cui1, BI Lei1, MENG Li-jun1 |
1. College of Environmental Science and Engineering, Dong hua University, Shanghai 201620, China;
2. State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Dong hua University, Shanghai 201620, China |
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Abstract Chitosan nano-fiber membrane was fabricated by electrospinning under optimized parameters and the prepared nano-fiber membrane coupled with electrokinetics (EK) were used to remediate soils contaminated by heavy metals (Cu and Cr). Results showed that the optimum parameters for fabricating membrane were as follows: weight ratio of chitosan/polyvinyl alcohol was 20/80, acetic acid concentration was 20% and the mixed solution concentration was 8%. The average diameter of the prepared nano fiber membrane was 37.11nm and the adsorption equilibrium of CS /PVA for metal ions was 4h．Soil remediation for heavy metals efficiency of single electrokinetic process was low, reached only 34.9% and 11.7%. The efficiency was greatly improved by the coupling process of EK and nano-fiber membrane and metal removal efficiency by the coupling process attained 82% and 91%, respectively.
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Received: 29 January 2016
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| [1] |
Li R, Zhao Z Q, Liu X N. The changes of heavy metals solubility with time under different chelants in contaminated soil[J]. Advanced Materials Research, 2013,3(864-867):283-288.
|
| [2] |
黄益宗,郝晓伟,雷鸣,等.重金属污染土壤修复技术及其修复实践[J]. 农业环境科学学报, 2013(3):409-417.
|
| [3] |
Kim B K, Baek K, Ko S H, et al. Research and field experiences on electrokinetic remediation in South Korea[J]. Separation & Purification Technology, 2011,79(2):116-123.
|
| [4] |
樊广萍,朱海燕,郝秀珍,等.不同的增强试剂对重金属污染场地土壤的电动修复影响[J]. 中国环境科学, 2015,35(5):1458-1465.
|
| [5] |
方一丰,郑余阳,唐娜,等.EDTA强化电动修复土壤铅污染[J]. 农业环境科学学报, 2008,27(2):612-616.
|
| [6] |
陈海峰,周东美,仓龙.垂直电场对重金属络合物在土壤中迁移过程的影响[J]. 中国环境科学, 2006,26(S1):78-82.
|
| [7] |
Genc A, Chase G, Foos A. Electrokinetic Removal of Manganese from River Sediment[J]. Water Air & Soil Pollution, 2009, 197(1-4):131-141.
|
| [8] |
毛玉红,冯俊杰,常青,等.壳聚糖助凝对PAC混凝过程的影响[J]. 中国环境科学, 2015,35(4):1096-1102.
|
| [9] |
张文杰,蒋建国,李德安,等.吸附材料对钒矿污染土壤重金属的稳定化效果[J]. 中国环境科学, 2016,36(5):1500-1505.
|
| [10] |
Sajjad H, Soo-Young P. Preparation of the electrospun chitosan nanofibers and their applications to the adsorption of Cu(II) and Pb(II) ions from an aqueous solution[J]. Journal of Membrane Science, 2009,328(1/2):90-96.
|
| [11] |
张慧敏,阮弦,胡勇有,等.静电纺壳聚糖/聚乙烯醇纳米纤维膜对Cu2+、Ni2+及Cd2+的吸附特性[J]. 环境科学学报, 2015, 35(1):184-193.
|
| [12] |
DB11/T811-2011场地土壤环境风险评价筛选值[S].
|
| [13] |
Ding B, Kim H Y, Lee S C, et al.Preparation and characterization of nanoscaled poly (vinyl alcohol ) fibers via electrospinning[J]. Fibers and Polymers, 2002,3(2):73-79.
|
| [14] |
常丽娜,张幼珠,张晓东.静电纺丝工艺参数对丝素/壳聚糖纳米纤维的形貌及直径的影响[J]. 合成纤维, 2006,35(2):14-17.
|
| [15] |
李晓云.锂离子电池用PVDF/PMMA电纺膜的制备及电化学性能研究[D]. 湘潭:湘潭大学, 2011.
|
| [16] |
张园园.静电纺丝制备壳聚糖/聚乙烯醇超细纤维及性能研究[D]. 天津:天津大学, 2005.
|
| [17] |
Koosha M, Mirzadeh H. Electrospinning, mechanical properties, and cell behavior study of chitosan/PVA nanofibers[J]. Journal of Biomedical Materials Research Part A, 2015,103(9):3081-3093.
|
| [18] |
Santos C, Silva C J, Buttel Z, et al. Preparation and characterization of polysaccharides/PVA blend nanofibrous membranes by electrospinning method[J]. Carbohydrate Polymers, 2014,99:584-92.
|
| [19] |
祝二斌,辛梅华,李明春,等.壳聚糖/聚乙烯醇共混膜的氢键和相容性[J]. 化工进展, 2012,31(5):1082-1087.
|
| [20] |
吕衍安,李楠,索掌怀.壳聚糖热裂解催化剂的筛选[J]. 烟台大学学报:自然科学与工程版, 2014(1):35-38.
|
| [21] |
Acar Y B, Alshawabkeh A N. Principles of electrokinetic remediation[J]. Environmental Science & Technology, 1992, 27(13).
|
| [22] |
Suzuki T, Niinae M, Koga T, et al. EDDS-enhanced electrokinetic remediation of heavy metal-contaminated clay soils under neutral pH conditions[J]. Colloids & Surfaces A Physicochemical & Engineering Aspects, 2014,440(2):145-150.
|
| [23] |
张兴,朱琨,李丽.污染土壤电动法修复技术研究进展及其前景[J]. 环境科学与管理, 2008,33(2):64-68.
|
| [24] |
Pascal S, Bert A. Mercury transport and speciation during electrokinetic soil remediation[J]. Water, Air, and Soil Pollution, 2003:99-109.
|
| [25] |
路平,冯启言,李向东,等.交换电极法强化电动修复铬污染土壤[J]. 环境工程学报, 2009(2):354-358.
|
| [26] |
Jurate V, Mika S, Petri L. Electrokinetic soil remediation critical overview[J]. The Science of the Total Evironment, 2002,289(25): 97-121.
|
| [27] |
胡宏韬.铜污染土壤电动修复研究[J]. 环境工程学报, 2009, 3(11):2091-2094.
|
| [28] |
贺小进,谭天伟,戚以政,等.球形壳聚糖树脂制备方法及吸附性能研究[J]. 离子交换与吸附, 2000,16(1):47-53.
|
| [29] |
陈锋,王业耀,孟凡生,等.铬(Ⅵ)污染高岭土电动修复影响因素研究[J]. 环境保护科学, 2007,33(4):110-113.
|
|
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