东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (9): 1352-1356.DOI: -

• 资源与土木工程 • 上一篇    下一篇

固定化生物活性炭对矿山酸性废水中Zn2+的吸附性能

林海1,2，周闪闪1,2，董颖博1,2，许晓芳1,2   

  1. (1.北京科技大学金属矿山高效开采与安全教育部重点实验室，北京100083；2.北京科技大学土木与环境工程学院，北京100083)
  • 收稿日期:2013-03-24 修回日期:2013-03-24 出版日期:2013-09-15 发布日期:2013-04-22
  • 通讯作者: 林海
  • 作者简介:林海(1966-)，男，四川南充人，北京科技大学教授，博士生导师.
  • 基金资助:
    国家环境保护公益性行业科研专项(201209013).

Biosorption Characteristics of Heavy Metal Zn2+ from Acid Mine Drainage by Immobilized Biological Activated Carbon

LIN Hai1,2， ZHOU Shanshan1,2， DONG YingBo1,2， XU Xiaofang1,2   

  1. 1. Key Laboratory of HighEfficient Mining and Safety of Metal Mines
  • Received:2013-03-24 Revised:2013-03-24 Online:2013-09-15 Published:2013-04-22
  • Contact: ZHOU Shanshan
  • About author:-
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摘要： 以筛选出的芬式纤维微菌属菌株T1为研究对象，研究了其用于固定化生物活性炭(IBAC)工艺对矿山酸性废水(AMD)中重金属Zn2+的吸附规律.结果表明，在水力负荷019m3·(m2·h)-1、气水体积比10∶1、水力停留时间380h，IBAC对Zn2+质量浓度10000mg/L，pH值4的酸性废水中Zn2+去除率达到7518%，且水质得到改善.共存离子Cu2+，Cd2+，Fe3+，Ni2+使IBAC对Zn2+的去除率降低.扫描电镜发现，菌株T1细胞成纤维状，且在活性炭颗粒表面附着生长，吸附Zn2+后细胞体积膨胀.EDS分析表明，固定在活性炭颗粒表面的微生物吸附大量Zn2+.反应动力学研究表明，IBAC吸附AMD中Zn2+基本符合一级反应动力学模型.

关键词: 固定化生物活性炭, 矿山酸性废水, 重金属锌离子, 微生物吸附, 菌株T1

Abstract: Taking the strains T1 (Cellulosimicrobium funkei) screened out as the research object， and the law of the adsorption with Zn2+of acid mine drainage (AMD) by the immobilized biological activated carbon (IBAC) technology was studied. The results indicated that the removal rate of Zn2+ reaches to 7518%and the water quality is improved， under the optimum running parameters of IBAC reactor for treating AMD with pH of 4 and initial concentration of Zn2+ of 10000mg/L， such as hydraulic loading rate of 019m3·(m2·h)-1， gaswater ration of 10∶1， and hydraulic retention time of 380h. Coexisting ions of Cu2+， Cd2+， Fe3+ and Ni2+ can reduce removal of Zn2+by IBAC. Scanning electron microscopy images showed that strain T1 cells are fibrousshape and attach and grow on the surface of the activated carbon particles， and cells volume expansion occurs after adsorption Zn2+. EDS analysis shown that the microorganism fixed in activated carbon particle surface adsorbs a large of Zn2+. Reaction kinetics studies shown that it is basically fit for firstorder kinetics model that the IBAC adsorbs Zn2+ in AMD.

Key words: immobilized biological activated carbon, acid mine drainage, heavy metal zinc ions, biosorption of microorganism, strains T1

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