Evaluation of Pretreatment Effect for Spent Mushroom Substrate on Methane Production
Evaluation of Pretreatment Effect for Spent Mushroom Substrate on Methane Production
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DOI：
10.2965/jwet.18-069
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发表时间：
2019-01-01
影响因子：
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通讯作者：
Yamaguchi, Takashi
中科院分区：
文献类型：
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作者：
Ikeda, Shoji;Watari, Takahiro;Yamaguchi, Takashi
本研究采用不同的预处理方法对蘑菇废渣厌氧发酵产甲烷进行了研究。分别采用水热处理、硫酸酸处理和氢氧化钠或氢氧化钾碱处理作为厌氧消化前的前处理。甲烷产气量为119.1毫升/克干重(D.W.)未处理的生根粉、水热处理的生根粉、酸处理的生根粉、碱处理的生根粉分别为55.5mL/g-D.W.、22.5mL/g-dw和219.1 mL/g-dw。这些结果表明，碱处理的甲烷产气量在这几种预处理中最大。碱处理结合加热对甲烷产气量没有明显影响。氢氧化钠处理和氢氧化钾处理的甲烷产气量也没有显著差异。这些结果表明，碱处理是生产SMS甲烷气的最佳预处理方法。同时认为，对沼气厌氧消化法生产的沼气，不需要预热预处理法和碱处理(如氢氧化钾)是最有效的预处理法。
In this study, various pretreatments were applied to spent mushroom substrate (SMS) for the methane gas production by anaerobic digestion. Hydrothermal treatment, acid treatment using H2SO4, and alkali treatment using NaOH or KOH were applied and evaluated as pretreatment of SMS before anaerobic digestion. The methane gas produced was 119.1 mL/g-dry weight (D.W.) with untreated SMS, 55.5 mL/g-D.W. with hydrothermal treated SMS, 22.5 mL/g-D.W. with acid treated SMS, and 219.1 mL/g-D.W. with alkali treated SMS. These results demonstrated that the alkali treatment showed the largest amount of methane gas production between these pretreatments of SMS. Alkali treatment combined with heating did not show significantly affect the amount of methane gas production. Also, there was no significant difference in the amount of methane gas production between NaOH treatment and KOH treatment. These results indicated that optimum pretreatment for the methane gas production of SMS is alkaline treatment. It was also suggested that the no necessary for heat pretreatment of SMS and alkaline treatment such as KOH is most effective method of SMS pretreatment for the methane gas production by anaerobic digestion.