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生物炭缓解餐厨垃圾厌氧消化酸化的效果及机制

李旭升 鹿莎莎 江远琰 王里奥

李旭升, 鹿莎莎, 江远琰, 王里奥. 生物炭缓解餐厨垃圾厌氧消化酸化的效果及机制[J]. 环境工程, 2021, 39(12): 179-187. doi: 10.13205/j.hjgc.202112027
引用本文: 李旭升, 鹿莎莎, 江远琰, 王里奥. 生物炭缓解餐厨垃圾厌氧消化酸化的效果及机制[J]. 环境工程, 2021, 39(12): 179-187. doi: 10.13205/j.hjgc.202112027
LI Xu-sheng, LU Sha-sha, JIANG Yuan-yan, WANG Li-ao. EFFECT AND MECHANISM OF BIOCHAR IN MITIGATING ACIDIFICATION OF ANAEROBIC DIGESTION PROCESS FOR FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(12): 179-187. doi: 10.13205/j.hjgc.202112027
Citation: LI Xu-sheng, LU Sha-sha, JIANG Yuan-yan, WANG Li-ao. EFFECT AND MECHANISM OF BIOCHAR IN MITIGATING ACIDIFICATION OF ANAEROBIC DIGESTION PROCESS FOR FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(12): 179-187. doi: 10.13205/j.hjgc.202112027

生物炭缓解餐厨垃圾厌氧消化酸化的效果及机制

doi: 10.13205/j.hjgc.202112027
基金项目: 

社区垃圾源头智能分类与清洁收集技术及装备(2019YFC906100)。

详细信息
    作者简介:

    李旭升(1996-),男,硕士研究生,主要研究方向为水污染控制。478035885@qq.com

    通讯作者:

    王里奥(1956-),女,教授,主要研究方向为固体废物污染控制及资源化利用。wangliao@cqu.edu.cn

EFFECT AND MECHANISM OF BIOCHAR IN MITIGATING ACIDIFICATION OF ANAEROBIC DIGESTION PROCESS FOR FOOD WASTE

  • 摘要: 研究了在高有机负荷(30 g VS/L,VS为挥发性固体含量)下生物炭缓解餐厨垃圾厌氧消化酸化,促进产甲烷的效应及机制。结果表明:碱性多孔生物炭在最优添加量下(1 g/g VS),反应20 d时,累积产甲烷量达到312.40 mL/(g·VS),与对照组相比提升了101.7%,同时产甲烷停滞期缩短62%。并在酸化最严重时挥发性脂肪酸(VFA)含量降低1151.28 mg/L。研究结果表明:生物炭的多孔结构是促进挥发性脂肪酸分解的关键因素,碱度和营养物质可以起到促进作用。高通量测序结果表明:最佳添加量下甲烷丝菌属(Methanothrix)、拟杆菌(Bacteroidales)、梭菌(Clostridiales)的相对丰度分别由26.12%、43.08%和9.95%提高到46.05%、56.25%和12.20%。生物炭缓解餐厨垃圾消化酸化的机制是为微生物提供反应场所,增强了微生物间的电子传递,提高了厌氧微生物的呼吸速率。
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  • 收稿日期:  2021-03-18
  • 网络出版日期:  2022-03-30
  • 刊出日期:  2022-03-30

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