Performance and kinetic evaluation of semi-continuously fed anaerobic digesters treating food waste: role of trace elements.
Performance and kinetic evaluation of semi-continuously fed anaerobic digesters treating food waste: role of trace elements.
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DOI：
10.1016/j.biortech.2014.08.046
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发表时间：
2015-02
影响因子：
11.4
通讯作者：
Wanqin Zhang;Shubiao Wu;Jianbin Guo;Jie Zhou;R. Dong
中科院分区：
文献类型：
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作者：
Wanqin Zhang;Shubiao Wu;Jianbin Guo;Jie Zhou;R. Dong
在实验室规模的半连续饲喂厌氧消化池中，研究了微量元素(TES)对餐厨垃圾厌氧消化的影响。沼气池运行时间约为400天。在37℃时，有机负荷率(OLR)为1.0~5.5 mg，与L−1D−1相比，结果表明，当挥发性脂肪酸(VFA)浓度为30,000 mg时，L−1与L−1D−1在没有TES的情况下，有机负荷(OLR)为4.0 mg时，沼气池的甲烷生成受到严重抑制。与失效的消化器相反，添加TES的消化器性能稳定。获得了较高的甲烷产率(CH4g−1VS添加约465.4 mg/L)，与L−1D−1和水力停留时间40天相比，添加TES的消化器在OLR1.0-5.0时没有观察到显著的挥发性脂肪酸积累。这些结果有力地表明，TES的加入对FW AD的运行稳定性有重要影响。
This study investigated the effects of trace elements (TEs) on the anaerobic digestion (AD) of food waste (FW) in laboratory-scale semi-continuously fed anaerobic digesters. The duration of digesters operation was approximately 400 days. Organic loading rates (OLRs) ranged from 1.0 to 5.5 g VS L−1d−1at 37 °C. Results showed that methane production of the digester was severely inhibited at a volatile fatty acid (VFA) concentration of 30,000 mg L−1at OLR of 4.0 g VS L−1d−1in the absence of TEs. Contrary to the failed digesters, a stable performance was achieved in the TEs added digesters. High methane yield (approximately 465.4 mL CH4g−1VSadded) was obtained, and no significant accumulation of VFA was observed in the TEs added digesters at OLR of 1.0–5.0 g VS L−1d−1and HRT of 40 days. These findings strongly indicated that the addition of TEs has an important impact on the operation stability of AD of FW.