Enhancing the anaerobic digestion of corn stover by chemical pretreatment with the black liquor from the paper industry.
Enhancing the anaerobic digestion of corn stover by chemical pretreatment with the black liquor from the paper industry.
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DOI：
10.1016/j.biortech.2020.123090
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发表时间：
2020-03
影响因子：
11.4
通讯作者：
Haipeng Xu;Yan Li;Dongliang Hua;Yuxiao Zhao;H. Mu;Honglei Chen;Guanyi Chen
中科院分区：
文献类型：
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作者：
Haipeng Xu;Yan Li;Dongliang Hua;Yuxiao Zhao;H. Mu;Honglei Chen;Guanyi Chen
利用造纸黑液对玉米秸秆进行厌氧消化前的预处理。在间歇式厌氧消化中，以12 gNaOH/L的碱度对玉米秸秆进行预处理24 h，甲烷产量可达260.5mL/gVS，比对照提高了59.1%。在半连续模式厌氧消化中，黑液预处理增加了缓冲能力，以维持合适的pH值和总VFA/碱度比，而没有不利影响的离子的存在。研究了预处理后玉米秸秆的结构和化学变化，以合理地提高厌氧消化的性能。
In this work, black liquor as a waste from paper industry was used to pretreat corn stover before anaerobic digestion. The batch mode anaerobic digestion achieved a methane production up to 260.5 mL/g VS when the corn stover was pretreated the black liquor of 12 g NaOH/L alkalinity for 24 h, which was 59.1% higher than the control. In the semi-continuous mode anaerobic digestion, black liquor pretreatment increased the buffering capacity of the digestate to maintain suitable pH and total VFA/alkalinity ratio with no adverse effect resulted from the presence of ions. The structural and chemical changes of corn stover after the pretreatment were investigated to rationalize the enhanced performance of anaerobic digestion.