采用海藻酸钠包埋黑曲霉及活性炭粉末的方法制备固定化黑曲霉活性炭微球,利用静态吸附试验研究铀溶液的pH值、初始铀浓度、吸附时间、黑曲霉粉末与活性炭粉末质量的配比及固定化黑曲霉活性炭微球的投加量等因素对其吸附铀的影响.通过对动力学模型、等温吸附模型进行拟合,研究固定化黑曲霉活性炭吸附铀的行为.采用扫描电镜、能谱仪和红外光谱仪分析吸附前后固定化黑曲霉活性炭微球表面的形貌、化学组成和官能团结构的变化,进而探讨吸附过程可能涉及的反应机理.结果表明:固定化黑曲霉活性炭吸附铀的最佳条件为pH值为5.0,铀初始浓度为l mg/L,固定化黑曲霉活性炭微球投加量为0.3 g/L,9h即达到吸附平衡,最大吸附量为691.7 mg/g.固定化黑曲霉活性炭吸附铀的过程符合准二级动力学模型,相关系数为0.9994; 吸附等温线符合Freundlich和Langmuir等温线模型,相关系数分别为0.9875和0.9993,体现固定化黑曲霉活性炭对铀的吸附模式是以单层吸附为主与多层吸附的共同作用的吸附模式.
参考文献
[1] | 任德曦;胡泊.论推进我国完整的核能产业经济体系的发展[J].南华大学学报(社会科学版),2014(2):1-9. |
[2] | 阙为民;王海峰;牛玉清;张飞凤;谷万成.中国铀矿采冶技术发展与展望[J].中国工程科学,2008(3):44-53. |
[3] | 王丽超;罗学刚;彭芳芳;赵鲁雪.铀尾矿污染土壤微生物活性及群落功能多样性变化[J].环境科学与技术,2014(3):25-31. |
[4] | Wang BE;Hu YY;Xie L;Peng K.Biosorption behavior of azo dye by inactive CMC immobilized Aspergillus fumigatus beads[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,20084(4):794-800. |
[5] | 陶敏慧;杨绍斌;张广积.固定化细胞技术在矿业领域中的应用[J].湿法冶金,2010(1):5-8. |
[6] | 陈华柏;谢水波;刘金香;肖拾红;曾涛涛;凌辉;王劲松.厌氧颗粒污泥吸附铀(Ⅵ的)特性与机理[J].中国有色金属学报,2014(9):2418-2425. |
[7] | 李小燕;刘义保;花明;李金轩;高柏.改性玉米芯吸附溶液中 U()Ⅵ的热力学特征[J].中国有色金属学报,2013(4):1168-1172. |
[8] | 徐磊;钱建平;唐专武.我国铀矿废渣石污染特点及治理方法[J].中国矿业,2013(1):61-64,75. |
[9] | 邹晓亮;王劲松;莫辉艳;彭瑞婷;皮艾南;贾亮.β-环糊精交联磁性壳聚糖对U(Ⅵ)的吸附性能及机制研究[J].原子能科学技术,2013(4):540-545. |
[10] | 廖泽君;史文革.氧化亚铁硫杆菌固定化技术及其应用[J].金属矿山,2015(1):62-66. |
[11] | 金科;李小明;杨麒;龙文芳.白腐真菌吸附废水中重金属离子的研究进展[J].工业用水与废水,2005(2):15-18. |
[12] | 陈灿;王建龙.酿酒酵母对Ag+的吸附特性研究[J].环境科学,2008(11):3200-3205. |
[13] | 彭国文;丁德馨;胡南;杨雨山;王晓亮.纳米Fe3O4负载啤酒酵母菌对铀的吸附性能与机理[J].中国有色金属学报,2012(2):604-610. |
[14] | Yasmin Khambhaty;Kalpana Mody;Shaik Basha.Kinetics,equilibrium and thermodynamic studies on biosorption of hexavalent chromium by dead fungal biomass of marine Aspergillus niger[J].Chemical engineering journal,20093(3):489-495. |
[15] | 林海;周闪闪;董颖博;许晓芳.固定化生物活性炭对矿山酸性废水中Zn2+的吸附性能[J].东北大学学报(自然科学版),2013(9):1352-1356. |
[16] | Oezguer Aktas;Ferhan Cecen.Adsorption, desorption and bioregeneration in the treatment of 2-chlorophenol with activated carbon[J].Journal of Hazardous Materials,20073(3):769-777. |
[17] | Cui Pang;Yun-Hai Liu;Xiao-Hong Cao.Biosorption of uranium(VI) from aqueous solution by dead fungal biomass of Penicillium citrinum[J].Chemical engineering journal,20111(1):1-6. |
[18] | 王永东;李广悦;史文革;胡南;潘文俊;周支香;邓钦文;丁德馨.浸铀真菌的分离和纯化研究[J].南华大学学报(自然科学版),2010(4):33-35. |
[19] | Rajender Kumar;Rajesh Singh;Naresh Kumar.Response surface methodology approach for optimization of biosorption process for removal of Cr(VI),Ni(II)and Zn(II)ions by immobilized bacterial biomass sp.Bacillus brevis[J].Chemical engineering journal,20093(3):401-407. |
[20] | Suman Vikas Bhat;J.S. Melo;B.B. Chaugule;S.F. D'Souza.Biosorption characteristics of uranium(VI) from aqueous medium onto Catenella repens, a red alga[J].Journal of hazardous materials,20082/3(2/3):628-635. |
[21] | 徐雪芹;李小明;杨麒;廖德祥;曾光明;张昱;刘精今.丝瓜瓤固定简青霉吸附废水中Pb2+和Cu2+的机理[J].环境科学学报,2008(1):95-100. |
[22] | Maria Gavrilescu;Lucian Vasile Pavel;Igor Cretescu.Characterization And Remediation Of Soils Contaminated With Uranium[J].Journal of hazardous materials,20092/3(2/3):475-510. |
[23] | Vogel, M.;Günther, A.;Rossberg, A.;Li, B.;Bernhard, G.;Raff, J..Biosorption of U(VI) by the green algae Chlorella vulgaris in dependence of pH value and cell activity[J].Science of the Total Environment,20102(2):384-395. |
[24] | 王晓;夏良树;郑伟娜;谭凯旋.改性麦秸对U(Ⅵ)的吸附性能及机理[J].过程工程学报,2010(6):1084-1090. |
[25] | 赵修华;王文杰;胡茂盛;祖元刚;任远;张宇亮;张衷华.产朊假丝酵母生物吸附Cu2+影响因素及吸附机理的研究[J].环境科学学报,2006(5):808-814. |
[26] | 丁洋;靖德兵;周连碧;杨晓松;吴亚君.板栗内皮对水溶液中镉的吸附研究[J].环境科学学报,2011(9):1933-1941. |
[27] | Jing Bai;Huijun Yao;Fangli Fan;Maosheng Lin;Una Zhang;Huajie Ding;Fuan Lei;Xiaolei Wu;Xiaofei Li;Junsheng Guo;Zhi Qin.Biosorption of uranium by chemically modified Rhodotorula glutinis[J].Journal of environmental radioactivity,201011(11):969-973. |
[28] | Liu, M.;Dong, F.;Yan, X.;Zeng, W.;Hou, L.;Pang, X..Biosorption of uranium by Saccharomyces cerevisiae and surface interactions under culture conditions[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,201022(22):8573-8580. |
[29] | 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. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%