全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
环境化学  2015 

铬污染土壤的微生物修复工艺及中试

Keywords: Cr(Ⅵ)污染,生物修复,重金属污染

Full-Text   Cite this paper   Add to My Lib

Abstract:

本研究利用土柱试验研究了铬污染土壤微生物修复的各工艺参数,结果表明土壤粒径、喷淋强度、以及修复工艺对铬污染土壤的修复效果有很大的影响.最佳的工艺参数为土壤粒径1—2cm、喷淋强度在29.6—59.2mL·min-1、工艺制度Ⅱ(先用自来水淋洗1d,接着用菌液循环喷淋).在土柱试验的基础上开展了25吨/批的中试试验,铬污染土壤经过7—10d的处理,土壤中Cr(Ⅵ)浸出毒性浓度由53.8mg·L-1降低至0.4mg·L-1,达到《铬渣污染治理环境技术规范》(HJ/T301—2007)中铬渣用作路基材料和混凝土骨料的标准限值,证明铬污染土壤微生物修复工业化具有可行性,为铬污染土壤工程化修复提供了技术支撑.

References

[1]  汤克勇. 铬的污染源及其危害[J]. 皮革科学与工程, 1997, 7(1): 33-48
[2]  Legrand L, Figuigui A, Mercier F, et al. Reduction of aqueous chromate by Fe(Ⅱ)/Fe(Ⅲ) carbonate green rust: Kinetic and mechanistic studies [J]. Environmental Science Technology, 2004, 38 (17): 4587-4595
[3]  周保学, 周定. 铬与人体健康[J]. 化学世界, 2000(3): 11
[4]  周加祥, 刘铮. 铬污染土壤修复技术研究展望[J]. 环境污染治理技术与设备. 2000, 1(4): 569-573
[5]  Kim C, Zhou Q H, Deng B L, et al. Chromium(VI) reduction by hydrogen sulfide inaqueous media: stoichiometry and kinetics[J]. Environmental Science Technology, 2001, 35:2219-2225
[6]  Kumpiene J, Ore S, Renella G, et al. Assessment of zerovalent iron for stabilization of chromium, copper, and arsenic in soil[J]. Environmental Pollution, 2006,144:62-69
[7]  Dermatas D, Chrysochoou M, Moon D H, et al. Ettringite-induced heave in chromite ore processing residue (CORP) upon ferrous sulphate treatment [J]. Environmental Science Technology, 2006,40:5786-5792
[8]  Liu Y G, Xu W H, Zeng G M, et al. Cr(Ⅵ) reduction by Bacillus sp. Isolated from chromium landfill [J]. Process Biochemistry, 2006,41:1981-1986
[9]  Mclean J S, Beveridge T J, Phipps D. Isolation and characterization of a chromium-reducing bacterium from a chromated copper arsenate-contaminated site[J]. Environmental Microbiology, 2000, 2(6):611-619
[10]  韩怀芬, 蒲凤莲, 裘娟萍, 生物法修复铬污染土壤的研究[J].能源环境保护, 2003, 17(2):7-9
[11]  许友泽 杨志辉 向仁军. 铬污染土壤的微生物修复[J].环境化学,2011,30(2):555-560
[12]  国家环保局《水和废水监测分析方法》编委会. 水和废水监测分析方[M]. 北京: 中国环境科学出版社, 1998
[13]  USEPA, Method 1311: Toxicity characteristic leaching procedure//Office of Solid Waste and Emergency Response (Ed.). Test Methods for Evaluating Solid Waste. SW-846, U.S. Environmental Protection Agency, Washington, DC, 1992[S].
[14]  Gibb H J, Lees P S J, Pinsky P F. Lung cancer among workers in chromium chemical production [J]. Am J Ind Med, 2000, 38: 115-126
[15]  陈巧珠. 微量元素铬与人体健康[J]. 宁德师专学报:自然科学版, 2003, 1(3): 244-246
[16]  夏星辉, 陈静生. 土壤重金属污染治理方法研究进展[J]. 环境科学, 1997, 18(3): 72-76
[17]  Graham M, Farmer J, Anderson P, et al. Calcium polysulfide remediation of hexavalent chromium contamination from chromite ore processing residue[J]. Science of the Total Environment, 2006,364:32-44
[18]  Ma Z, Zhu W, Long H, et al. Chromate reduction by resting cells of Achromobacter sp. Ch-1 under aerobic conditions [J]. Process Biochemistry, 2007, 42:1028-1032
[19]  Thacker U, Parikh R, Shouche Y, et al. Reduction of chromate by cell-free extract of Brucella sp. isolated from Cr(Ⅵ) contaminated sites [J]. Bioresource Technology, 2007,98:1541-1547
[20]  Francisco R, Alpoim M C, Morals P V. Diversity of chromium-resistant and-reducing bacteria in a chromium-contaminated activated sludge[J]. Journal of Applied Microbiology, 2002, 92(5):837-843
[21]  Viera M, Curutchet G, Donati E. A combined bacterial process for the reduction and immobilization of chromium[J]. International Biodeterioration and Biodegradation, 2003, 52(1):31-33
[22]  Chai L Y, Huang S H, Yang Z H, et al. Cr (VI) remediation by indigenous bacteria in soils contaminated by chromium-containing slag[J]. Journal of Hazardous Materials, 2009,167(1/3):516-522

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133