Anaerobic digestion of maize in coupled leach-bed and anaerobic filter reactors.
Anaerobic digestion of maize in coupled leach-bed and anaerobic filter reactors.
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DOI：
10.2166/wst.2008.518
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发表时间：
2008-10
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影响因子：
--
通讯作者：
D. Cysneiros;C. Banks;S. Heaven
中科院分区：
文献类型：
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作者：
D. Cysneiros;C. Banks;S. Heaven
以能源玉米为底物，研究了厌氧过滤器与渗滤床反应器耦合的甲烷潜力。四个LBR成对使用，有和没有渗滤液再循环，在两个饲料周期的保留时间为14和28天。从LBR中的总固体破坏以及渗滤液中的挥发性脂肪酸（VFA）和可溶性化学需氧量（SCOD）来估计性能。尽管有机负荷率（OLR）有限，但添加到组合系统中的新鲜基质的总体转化率良好。耦合LBR表现出良好的缓冲促进了水解性能的改善，AF显示出渗滤液SCOD快速转化为甲烷，可能进一步水解和酸化。甲烷潜力的理论估计表明，20-40%的甲烷是在LBR中形成的，并且在本试验中没有捕获。
The methane potential of a leach bed reactor (LBR) coupled to an anaerobic filter (AF) was assessed using energy maize (Zea mays) as substrate. Four LBRs were used operated as pairs, with and without leachate recirculation, over two feed cycles with retention times of 14 and 28 days. Performance was estimated from the total solids destruction in the LBR, and the volatile fatty acid (VFA) and soluble chemical oxygen demand (SCOD) in the leachate. Overall conversion of fresh substrate added to the combined system was good although the organic loading rate (OLR) was limited. The coupled LBR demonstrated improved hydrolysis performance promoted by good buffering, and the AF showed rapid conversion of leachate SCOD into methane with possible further hydrolysis and acidification. Theoretical estimation of the methane potential showed that between 20-40% of the methane was formed in the LBR and was not captured in this trial.