| 剩余污泥为燃料的微生物燃料电池产电特性研究 |
| 摘要点击 2556 全文点击 2168 投稿时间：2008-06-02 修订日期：2008-07-08 |
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| 中文关键词 单室无膜微生物燃料电池 剩余污泥 底物 污泥资源化 |
| 英文关键词 single-chamber and membrane-less microbial fuel cell surplus sludge substrate sludge recycling |
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| 中文摘要 |
| 利用厌氧污泥作为接种体在不加入任何营养元素的条件下,经过20 d成功地启动了单室无膜微生物燃料电池.启动成功后对剩余污泥作为燃料产电特性以及底物的变化进行了研究.结果表明,微生物燃料电池产生的最大电压为495 mV(外电阻为1 000 Ω),最大功率密度达到44 mW·m-2,稳定期间内阻约为300 Ω.在1个运行周期中,污泥SS和VSS的去除率分别为27.3%和28.7%,pH值的变化范围为6.5～8.0, COD的起始浓度为617 mg·L-1,浓度随时间的增加而增大并稳定在1 150 mg·L-1左右,随后逐渐下降,糖的起始浓度为47 mg·L-1,逐渐增大到60 mg·L-1之后浓度逐渐下降.微生物燃料电池可以将剩余污泥中的化学能转化为最清洁的电能,为污泥资源化提供了新的思路. |
| 英文摘要 |
| A single-chamber and membrane-less microbial fuel cells were successfully started up using anaerobic sludge as inoculums without any chemical substance for 20 d. The electricity generation of the microbial fuel cell using surplus sludge as fuel and the change of substrate were investigated. The results showed that the obtained maximum voltage and power density were 495 mV and 44 mW·m-2(fixed 1 000 Ω), and the internal resistance was about 300 Ω during steady state. In a cycle, the removal efficiency of SS and VSS were 27.3% and 28.7%, pH was 6.5-8.0. In addition, the COD increased from 617 mg·L-1 to 1 150 mg·L-1 and decreased afterwards with time. The change of glucose was similar to that of COD, glucose increased from 47 mg·L-1 to 60 mg·L-1 and decreased afterwards with time. Consequently, the microbial fuel cell can transform chemical energy of surplus sludge into the cleanest electrical energy, and it provides a new way of sludge recycling. |
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