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餐厨垃圾有机酸发酵液淋洗去除土壤重金属

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戴世金, 周紫薇, 张子莎, 雷茗淇, 林姝灿, 宋立杰, 诸毅, 安淼, 赵由才. 餐厨垃圾有机酸发酵液淋洗去除土壤重金属[J]. 环境工程学报, 2019, 13(2): 381-388. doi: 10.12030/j.cjee.201807095
引用本文: 戴世金, 周紫薇, 张子莎, 雷茗淇, 林姝灿, 宋立杰, 诸毅, 安淼, 赵由才. 餐厨垃圾有机酸发酵液淋洗去除土壤重金属[J]. 环境工程学报, 2019, 13(2): 381-388. doi: 10.12030/j.cjee.201807095
shu
DAI Shijin, ZHOU Ziwei, ZHANG Zisha, LEI Mingqi, LIN Shucan, SONG Lijie, ZHU Yi, AN Miao, ZHAO Youcai. Removal of heavy metals using organic acids fermentation liquid derived from food waste[J]. Chinese Journal of Environmental Engineering, 2019, 13(2): 381-388. doi: 10.12030/j.cjee.201807095
Citation: DAI Shijin, ZHOU Ziwei, ZHANG Zisha, LEI Mingqi, LIN Shucan, SONG Lijie, ZHU Yi, AN Miao, ZHAO Youcai. Removal of heavy metals using organic acids fermentation liquid derived from food waste[J]. Chinese Journal of Environmental Engineering, 2019, 13(2): 381-388. doi: 10.12030/j.cjee.201807095
shu

餐厨垃圾有机酸发酵液淋洗去除土壤重金属

  • 1.

    同济大学环境科学与工程学院，污染控制与资源化研究国家重点实验室，上海 200092

  • 2.

    上海市环境工程设计科学研究院有限公司，上海 200032

  • 3.

    上海污染场地修复工程技术研究中心，上海 200032

  • 基金项目:

    上海市国资委企业技术创新和能级提升项目2015016

    2017国家大学生创新项目0400107176/001上海市国资委企业技术创新和能级提升项目(2015016)

    2017国家大学生创新项目(0400107176/001)

Removal of heavy metals using organic acids fermentation liquid derived from food waste

  • 1.

    State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China

  • 2.

    Shanghai Institute for Design & Research on Environmental Engineering, Shanghai 200032, China

  • 3.

    Shanghai Engineering Research Center for Contaminated Site Remediation, Shanghai 200032, China

  • Fund Project:

  • 摘要: 餐厨垃圾发酵产生的大量酸性发酵液可淋洗去除土壤重金属。为增加餐厨垃圾发酵液中的挥发性有机酸产量，并探讨发酵液淋洗去除土壤重金属的效果，研究了控制pH、添加酵母菌和醋酸菌以及预处理3种手段对发酵过程产酸的影响。结果表明：添加酵母菌和醋酸菌可有效提高乙酸的产量，添加5%时乙酸产量为7.32 g·L-1，添加10%时为15.06 g·L-1；持续调控pH为6.00和碱预处理可增加发酵液中乙酸的比例。在5种预处理条件下，碱预处理对反应的促进作用最大，乙酸产量可提高到18.29 g·L-1。小型批实验中，采用最佳预处理条件发酵液对土壤重金属进行去除，Cd去除率为92.9%、Cu去除率为78.8%、Pb去除率为34.5%、Zn去除率为52.2%、Ni去除率为61.2%。在柱淋洗实验中，发现Cd、Cu、Zn、Ni的去除效果较好，Pb的去除效果稍差。发酵液的重金属淋洗效果相比醋酸提高了20%~52%。有机酸发酵液是一种具有应用前景的土壤重金属淋洗剂。
    Abstract: A large amount of acidic fermentation liquids produced by the fermentation of kitchen waste can be utilized to remove heavy metals from the soil. In order to further increase the production of volatile organic acids in the fermentation liquids of kitchen waste, three methods including pH control, addition of yeast and acetic acid bacteria, and the pretreatments were studied to increase acids yield. It was found that addition of yeast and acetic acid bacteria can effectively increase the yield of acetic acid, 5% and 10% addition can result in 7.32 g·L-1 and 15.06 g·L-1 acetic acid production, respectively. Continuous adjusting pH=6 or alkali pretreatment also promoted the proportion of acetic acids in fermentation liquids, and the latter could improve the acetic acid yield production to 18.29 g·L-1, which showed the highest promotion effect. The fermentation liquids derived from the optimized pretreatment conditions were used to remove heavy metals from the soil. In the small batch experiment, the removal rates of Cd, Cu, Pb Zn and Ni were 92.9%, 78.8%, 34.5%, 52.2% and 61.2%, respectively. The column leaching experiments showed that the removal effects of Cd, Cu, Zn, Ni were better than Pb. Compared with acetic acid, the heavy metal leaching effect by the fermentation liquids increased by 20%~52%, which is a promising soil heavy metal eluent.
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  • 刊出日期:  2019-02-02

餐厨垃圾有机酸发酵液淋洗去除土壤重金属

  • 1. 同济大学环境科学与工程学院，污染控制与资源化研究国家重点实验室，上海 200092
  • 2. 上海市环境工程设计科学研究院有限公司，上海 200032
  • 3. 上海污染场地修复工程技术研究中心，上海 200032
基金项目:

上海市国资委企业技术创新和能级提升项目2015016

2017国家大学生创新项目0400107176/001上海市国资委企业技术创新和能级提升项目(2015016)

2017国家大学生创新项目(0400107176/001)

摘要: 餐厨垃圾发酵产生的大量酸性发酵液可淋洗去除土壤重金属。为增加餐厨垃圾发酵液中的挥发性有机酸产量，并探讨发酵液淋洗去除土壤重金属的效果，研究了控制pH、添加酵母菌和醋酸菌以及预处理3种手段对发酵过程产酸的影响。结果表明：添加酵母菌和醋酸菌可有效提高乙酸的产量，添加5%时乙酸产量为7.32 g·L-1，添加10%时为15.06 g·L-1；持续调控pH为6.00和碱预处理可增加发酵液中乙酸的比例。在5种预处理条件下，碱预处理对反应的促进作用最大，乙酸产量可提高到18.29 g·L-1。小型批实验中，采用最佳预处理条件发酵液对土壤重金属进行去除，Cd去除率为92.9%、Cu去除率为78.8%、Pb去除率为34.5%、Zn去除率为52.2%、Ni去除率为61.2%。在柱淋洗实验中，发现Cd、Cu、Zn、Ni的去除效果较好，Pb的去除效果稍差。发酵液的重金属淋洗效果相比醋酸提高了20%~52%。有机酸发酵液是一种具有应用前景的土壤重金属淋洗剂。

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