Improving the efficiency of anaerobic digestion of Molasses alcohol wastewater using Cassava alcohol wastewater as a mixed feedstock
Improving the efficiency of anaerobic digestion of Molasses alcohol wastewater using Cassava alcohol wastewater as a mixed feedstock
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以木薯酒精废水为混合原料提高糖蜜酒精废水厌氧消化效率
DOI：
10.1016/j.biortech.2021.126179
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发表时间：
2022
影响因子：
11.4
通讯作者：
Peihong Shen
中科院分区：
文献类型：
--
作者：
Qiong Jiang;Yuan Xin;Yanbo Jiang;Luodong Huang;Peihong Shen
以木薯酒精废液为混合原料，研究添加木薯酒精废液对糖蜜酒精废液厌氧消化的促进作用。结果表明，M + CAW处理对溶解性化学需氧量（COD）的去除率为70.13 ± 0.16%，显著高于C处理（61.23 ± 0.36%）; M处理中的共消化导致更高的甲烷产量，与C处理相比，甲烷产量增加了23.89%。CAW的添加有助于缓解挥发性脂肪酸（397.06 ± 141.82 mg·L-1）的积累，增强系统的稳定性，促进稳定而活跃的微生物群落的建立。微生物群落结构分析表明，水解细菌（拟杆菌门、厚壁菌门和变形菌门）和乙酸分解产甲烷菌（甲烷菌门和甲烷菌门）在共生菌中的数量较多。
Cassava alcohol wastewater (CAW) was utilized as a mixed feedstock to explore whether the addition of CAW could improve the anaerobic digestion of Molasses alcohol wastewater (MAW). The result showed that the rate of removal of the soluble chemical oxygen demand in the M treatment mixed with CAW was 70.13 ± 0.16%, which was significantly higher than that of the C treatment (only MAW), which was 61.23 ± 0.36%. Co-digestion in the M treatment resulted in higher methane production, achieving 23.89% increase in methane yield compared to C treatment. The addition of CAW helps to alleviate the accumulation of volatile fatty acids (397.06 ± 141.82 mg·L-1), enhance the stability of system and promote the establishment of stable and active microbial communities. Microbial community structure analysis indicated that hydrolytic bacteria such as Bacteroidetes, Firmicutes, and Proteobacteria, and acetoclastic methanogens, includingMethanosaetaandMethanosarcinawere more abundant in the co-digests.