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玉米芯为碳源固定化硫酸盐还原菌污泥代谢特性

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狄军贞, 江富, 朱志涛, 戴男男. 玉米芯为碳源固定化硫酸盐还原菌污泥代谢特性[J]. 环境工程学报, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
引用本文: 狄军贞, 江富, 朱志涛, 戴男男. 玉米芯为碳源固定化硫酸盐还原菌污泥代谢特性[J]. 环境工程学报, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
shu
Di Junzhen, Jiang Fu, Zhu Zhitao, Dai Nannan. Metabolic properties of immobilized sulfate reducing bacteria sludge with corncob as carbon source[J]. Chinese Journal of Environmental Engineering, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
Citation: Di Junzhen, Jiang Fu, Zhu Zhitao, Dai Nannan. Metabolic properties of immobilized sulfate reducing bacteria sludge with corncob as carbon source[J]. Chinese Journal of Environmental Engineering, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
shu

玉米芯为碳源固定化硫酸盐还原菌污泥代谢特性

  • 1.

    辽宁工程技术大学建筑工程学院, 阜新 123000

  • 基金项目:

    国家自然科学基金资助项目(41102157)

  • 中图分类号: Q819

Metabolic properties of immobilized sulfate reducing bacteria sludge with corncob as carbon source

  • 1.

    College of Architecture Engineering, Liaoning Technical University, Fuxin 123000, China

  • Fund Project:

  • 摘要: 以聚乙烯醇为包埋载体,饱和硼酸为交联剂,制作了玉米芯为内聚缓释碳源的固定化硫酸盐还原菌污泥颗粒。通过厌氧批实验研究了在模拟酸性矿山废水(AMD)条件下玉米芯含量、初始SO42-和Mn2+负荷以及pH对固定化颗粒代谢特性的影响,初步分析了固定化颗粒处理AMD的机理及可行性。实验结果表明,玉米芯在微生物作用下快速水解并产生有机物累积后,固定化颗粒才能迅速还原SO42-,且玉米芯含量≤5%时硫酸盐还原率与玉米芯含量成正相关,玉米芯的水解会略微降低体系的pH;初始SO42-浓度通过改变体系中COD/SO42-和颗粒内外的浓度差影响固定化颗粒的代谢过程,而对玉米芯水解的影响不显著。初始pH为2~6和Mn2+浓度≤55 mg/L时对固定化颗粒活性抑制作用不明显,初始pH越低越利于玉米芯的水解和颗粒形成良好的孔隙结构;颗粒对Mn2+的去除机理是一种不依赖微生物活性的快速化学吸附作用,可用伪二级动力学模型描述吸附过程(R2=0.995)。
    Abstract: Polyving akoholy and saturated H3BO3 were applied to immobilize sulfate reducing bacteria sludge.The effects of factors,including dosage of inner cohesive corncob,pH and concentration of SO42- and Mn2+,on the metabolic properties of immobilized particle were investigated in the process of treating simulated acid mine drainage.The results revealed that the rapid reduction of SO42- occurred after the hydrolysis of corncob that depended on hydrolytic bacteria and decreased solution pH appreciably.Moreover,a significant positive relationship was observed between the reducing rate and the dosage of corncob that was less than 5%.The metabolic capacity of particle increased with decreasing sulfate concentration,by promoting COD/SO42- in the solution,and decreasing pH value that accelerated the hydrolysis of corncob.The absorption date of Mn2+ could be fitted to pseudo-second-order model (R2=0.995) well that indicated the reaction independent with microbial activity.
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  • 收稿日期:  2014-09-01
  • 刊出日期:  2015-04-03
狄军贞, 江富, 朱志涛, 戴男男. 玉米芯为碳源固定化硫酸盐还原菌污泥代谢特性[J]. 环境工程学报, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
引用本文: 狄军贞, 江富, 朱志涛, 戴男男. 玉米芯为碳源固定化硫酸盐还原菌污泥代谢特性[J]. 环境工程学报, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
shu
Di Junzhen, Jiang Fu, Zhu Zhitao, Dai Nannan. Metabolic properties of immobilized sulfate reducing bacteria sludge with corncob as carbon source[J]. Chinese Journal of Environmental Engineering, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
Citation: Di Junzhen, Jiang Fu, Zhu Zhitao, Dai Nannan. Metabolic properties of immobilized sulfate reducing bacteria sludge with corncob as carbon source[J]. Chinese Journal of Environmental Engineering, 2015, 9(4): 1687-1692. doi: 10.12030/j.cjee.20150427
shu

玉米芯为碳源固定化硫酸盐还原菌污泥代谢特性

  • 1. 辽宁工程技术大学建筑工程学院, 阜新 123000
  • 收稿日期:  2014-09-01
基金项目:

国家自然科学基金资助项目(41102157)

摘要: 以聚乙烯醇为包埋载体,饱和硼酸为交联剂,制作了玉米芯为内聚缓释碳源的固定化硫酸盐还原菌污泥颗粒。通过厌氧批实验研究了在模拟酸性矿山废水(AMD)条件下玉米芯含量、初始SO42-和Mn2+负荷以及pH对固定化颗粒代谢特性的影响,初步分析了固定化颗粒处理AMD的机理及可行性。实验结果表明,玉米芯在微生物作用下快速水解并产生有机物累积后,固定化颗粒才能迅速还原SO42-,且玉米芯含量≤5%时硫酸盐还原率与玉米芯含量成正相关,玉米芯的水解会略微降低体系的pH;初始SO42-浓度通过改变体系中COD/SO42-和颗粒内外的浓度差影响固定化颗粒的代谢过程,而对玉米芯水解的影响不显著。初始pH为2~6和Mn2+浓度≤55 mg/L时对固定化颗粒活性抑制作用不明显,初始pH越低越利于玉米芯的水解和颗粒形成良好的孔隙结构;颗粒对Mn2+的去除机理是一种不依赖微生物活性的快速化学吸附作用,可用伪二级动力学模型描述吸附过程(R2=0.995)。

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