|
|
|
| Adsorption properties ofmagnetic chitosan hydrogelmicrospheres to Pb(II) from aqueous solutions |
| PU Sheng-yan1,2,3, WANG Ke-xin1,2, MA Hui1,2, YANG Zeng1,2, HOU Ya-qi1,2, CHEN Hong-yu1,2 |
1. State Key Laboratory of Geological Prevention and Geological Environment Protection, Chengdu University of Technology, Chengdu 610059, China;
2. State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, China;
3. Department of Civil and Environment Engineering, The Hong Kong Polytechnic University, Hong Kong, China |
|
|
|
|
Abstract In this study, the magnetic porous chitosan hydrogel microsphere was fabricated by a combination of in situ-coprecipitation and sodium citrate crosslinking technique using chitosan as raw material. The scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TG) were conducted for the characterization of this novel adsorbent. The hydrogel microsphere present a well developed porous inner structure and the Fe3O4nanoparticles with an average diameter of (4.79±1.09) nm dispersed uniformly. The functional group of chitosan, the hydroxyl, amino and carboxyl groups, remained after the introduction of the Fe3O4, and the magnetic adsorbent could be separated by the addition of external magnetic field. The adsorption isotherm and kinetic study for the Pb (Ⅱ) removal from the aquatic environment indicating that the adsorption process was dominated by the chemical adsorption and the maximum adsorption capacity was calculated as 178.25mg/g.
|
|
Received: 18 September 2017
|
|
|
|
|
|
| [1] |
唐黎,李秋华,陈椽,等.贵州普定水库沉积物重金属分布及污染特征[J]. 中国环境科学, 2017,37(12):4710-4721.
|
| [2] |
范小杉,罗宏.工业废水重金属排放区域及行业分布格局[J]. 中国环境科学, 2013,33(4):655-662.
|
| [3] |
Fu F, Wang Q. Removal of heavy metal ions from wastewaters:A review[J]. Journal of Environmental Management, 2011,92(3):407-418.
|
| [4] |
Bailey S E, Olin T J, Bricka R M, et al. A review of potentially low-cost sorbents for heavy metals[J]. Water Research, 1999, 33(11):2469-2479.
|
| [5] |
包汉峰,杨维薇,张立秋,等.污泥基活性炭去除水中重金属离子效能与动力学研究[J]. 中国环境科学, 2013,33(1):69-74.
|
| [6] |
孙岩,吴启堂,许田芬,等.土壤改良剂联合间套种技术修复重金属污染土壤:田间试验[J]. 中国环境科学, 2014,34(8):2049-2056.
|
| [7] |
丁述理,孙晨光.膨润土吸附水中Cr(Ⅵ)的影响因素研究[J]. 非金属矿, 2006,(3):45-48.
|
| [8] |
梁莎,冯宁川,郭学益.生物吸附法处理重金属废水研究进展[J]. 水处理技术. 2009,(3):13-17.
|
| [9] |
王建龙,陈灿.生物吸附法去除重金属离子的研究进展[J]. 环境科学学报, 2010,(4):673-701.
|
| [10] |
张安超,向军,路好,等.酸-碘改性壳聚糖-膨润土脱除单质汞特性及机理分析[J]. 中国环境科学, 2013,33(10):1758-1764.
|
| [11] |
周书葵,曾光明,刘迎九,等.改性羧甲基纤维素对铀吸附机理的试验研究[J]. 中国环境科学, 2011,31(9):1466-1471.
|
| [12] |
路瑶,魏贤勇,宗志敏,等.木质素的结构研究与应用[J]. 化学进展, 2013,(5):838-858.
|
| [13] |
Muzzarelli R A A. Potential of chitin/chitosan-bearing materials for uranium recovery:An interdisciplinary review[J]. Carbohydrate Polymers, 2011,84(1):54-63.
|
| [14] |
Feng Y, Gong J, Zeng G, et al. Adsorption of Cd (Ⅱ) and Zn (Ⅱ) from aqueous solutions using magnetic hydroxyapatite nanoparticles as adsorbents[J]. Chemical Engineering Journal, 2010,162(2):487-494.
|
| [15] |
Kim D K, Zhang Y, Voit W, et al. Synthesis and characterization of surfactant-coated superparamagneticmonodispersed iron oxide nanoparticles[J]. Journal of Magnetism and Magnetic Materials, 2001,225(1/2):30-36.
|
| [16] |
Gupta A K, Gupta M. Synthesis and surface engineering of iron oxide nanoparticles for biomedical applications[J]. Biomaterials, 2005,26(18):3995-4021.
|
| [17] |
Li G, Jiang Y, Huang K, et al. Preparation and properties of magnetic Fe3O4-chitosan nanoparticles[J]. Journal of Alloys and Compounds, 2008,466(1/2):451-456.
|
| [18] |
宋艳艳,孔维宝,宋昊,等.磁性壳聚糖微球的研究进展[J]. 化工进展, 2012,31(2):345-354.
|
| [19] |
Liu Z, Bai H, Sun D D. Facile fabrication of porous chitosan/TiO2/Fe3O4 microspheres with multifunction for water purifications[J]. NEW Journal of Chemistry, 2011,35(1):137-140.
|
| [20] |
Wang C, Yang C, Huang K, et al. Electrostatic droplets assisted in situ synthesis of superparamagnetic chitosan microparticles for magnetic-responsive controlled drug release and copper ion removal[J]. Journal of Materials Chemistry B. 2013,1(16):2205-2212.
|
| [21] |
程三旭,李克智,齐乐华,等.反向共沉淀法制备纳米Fe3O4及其粒径控制[J]. 材料研究学报, 2011,(5):489-494.
|
| [22] |
Bulut Y, Gozubenli N, Aydin H. Equilibrium and kinetics studies for adsorption of direct blue 71from aqueous solution by wheat shells[J]. Journal of Hazardous Materials, 2007,144(1/2):300-306.
|
| [23] |
王珏珏,张越非,池汝安,等.改性木质素磺酸钠对铅离子的吸附行为研究[J]. 武汉工程大学学报, 2017,39(1):12-18.
|
| [24] |
涂艳梅,杨汉培,聂坤,等.磺乙基化与传统壳聚糖对比研究其对水体中铅有效性降低效应[J]. 环境科技, 2016,29(2):1-6.
|
| [25] |
王春云,闫新豪,符纯美.基于甘蔗渣生物吸附重金属污染物的研究[J]. 当代化工. 2017,(1):61-63.
|
|
|
|
