全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用：99美元
投递稿件

查看量下载量

相关文章

更多...

酸度对好氧颗粒污泥生物吸附含铅废水影响的研究

Keywords: 好氧颗粒污泥,Pb2+,离子交换,生物吸附,解析

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了有效地控制铅污染，利用序批式反应器（sequencingbatchreactor,SBR）培养的以醋酸钠为碳源的好氧颗粒污泥作为吸附剂，进行生物吸附含铅废水的效能和机理的研究。通过考察酸度、接触时间和Pb2+初始浓度等因素的影响，验证好氧颗粒污泥吸附模型，并利用不同的脱附剂，进一步解析其生物吸附的Pb2+。实验结果表明,酸度是影响好氧颗粒污泥生物吸附Pb2+的关键因素，当初始pH为5时，好氧颗粒污泥对含铅废水生物吸附效果最好。对低浓度（0～20mg/L）含铅废水，10min后可快速达到吸附平衡。好氧颗粒污泥对Pb2+的实测饱和吸附量为101.97±9.00mg/g，符合朗缪尔（Langmuir）模型。好氧颗粒污泥生物吸附Pb2+的过程，伴随着pH值的升高和K+、Ca2+、Mg2+的释放，此现象揭示离子交换作用是好氧颗粒污泥生物吸附Pb2+的机理之一。此外，脱附剂HNO3、EDTA和CaCl2能实现Pb2+的回收和好氧颗粒污泥的重复利用。

 References

[1]  王琳,王宝贞,饮用水深度处理技术,北京:化学工业出版社,2001.
[2]  孟祥和,胡国飞,重金属废水处理,北京:化学工业出版社,2000.
[3]  周少奇,现代环境生物技术,北京:科学出版社,2003.
[4]  Kapoor A,Viraraghavan T,Fungal biosorption-an alternative treatment option for heavy metal bearing wastewater:A review,Bioresource Technology,1995.
[5]  Liu Y,Xu H,YangS.F,A general model for biosorption of Cd2+,Cu2+ and Zn2+ by aerobic granules,Journal of Biotechnology,2003.
[6]  姚磊.叶正芳.王中友.倪晋仁 好氧颗粒污泥对Pb2+的吸附特性研究 [J].-科学通报2007(20)
[7]  Ozer A,Ozer D,Comparative study of the biosorption of Pb(Ⅱ),Ni(Ⅱ) and Cr(Ⅵ) ions onto S.cerevisiae:Determination of biosorption heats,Journal of Hazardous Materials,2003.
[8]  Bahadir T,Bakan G,Altas L,The investigation of lead removal by biosorption:An application at storage battery industry wastewaters,Enzyme and Microbial Technology,2007.
[9]  Matheickal J.T,Yu Q,Biosorption of lead from aqueous solutions by marine alga Ecklonia radiata,Water Science and Technology,1996.
[10]  Fiol N,Villaescusa I,Martinez M,Sorption of Pb(Ⅱ),Ni(Ⅱ),Cu(Ⅱ) and Cd(Ⅱ) from aqueous solution by olive stone waste,Separation and Purification Technology,2006.
[11]  Xu H,Liu Y,Tay J.H,Effect of pH on nickel biosorption by aerobic granular sludge,Bioresource Technology,2006.
[12]  Aquino S.F,Stuckey D.C,Soluble microbial products formation in anaerobic chemostats in the presence of toxic compounds,Water Research,2004.
[13]  Conrad K,Hansen H.C.B,Sorption of zinc and lead on coir,Bioresource Technology,2007.
[14]  刘恒.王建龙.文湘华 啤酒酵母吸附重金属离子铅的研究 [J].-环境科学研究2002(2)
[15]  Tchobanoglous G,Franklin L,Burton H,Wastewater Engineering,U.S.New York:Metcalf & Eddy,Inc,2003.
[16]  Liu Y,Xu H,Equilibrium,thermodynamics and mechanisms of Ni2+ biosorption by aerobic granules,Biochemical Engineering Journal,2007(2).
[17]  Qin L,Tay J.H,Liu Y,Selection pressure is a driving force of aerobic granulation in sequencing batch reactors,Process Biochemistry,2004.
[18]  Hawari A.H,Mulligan C.N,Heavy metals uptake mechanisms in a fixed-bed column by calcium-treated anaerobic biomass,Process Biochemistry,2006.
[19]  Ahluwalia S.S,Goyal D,Microbial and plant derived biomass for removal of heavy metals from wastewater,Bioresource Technology,2007.
[20]  李长波.赵国峥.张洪林.蒋林时.苗磊 生物吸附剂处理含重金属废水研究进展 [J].-化学与生物工程2006(2)
[21]  Wang X,Chen L,Xia S,Biosorption of Cu(Ⅱ) and Pb (Ⅱ) from aqueous solutions by dried activated sludge,Minerals Engineering,2006.
[22]  关晓辉.秦玉春.赵洁.魏德洲 浮游球衣菌去除废水中Pb2+的研究 [J].-环境科学2005(6)
[23]  李煜,王琳,厌氧颗粒污泥处理低浓度含铅废水的研究,青岛理工大学学报,2007.
[24]  Tokcaer E,Yetis U,Pb(Ⅱ) biosorption using anaerobically digested sludge,Journal of Hazardous Materials,2006.
[25]  Deng L,Su Y,Su H,Sorption and desorption of lead (Ⅱ) from wastewater by green algae Cladophora fascicularis,Journal of Hazardous Materials,2007.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133