In this research, various pretreatment was applied to spent mushroom substrate (SMS) for high efficiency recovery of methane. Hot water treatment, acid treatment using H2SO4, and alkali treatment using NaOH or KOH were applied and evaluated as pretreatment. As a result, methane produced were 119.1 mL / g-dry weight (D.W.) in untreated system, 55.5 mL / g-D.W. in hot water treatment, 22.5 mL /g-D.W. in acid treatment, 219.1 mL / g-D.W. in alkali treatment, and the alkali treatment showed the largest amount of methane recovered. Alkali treatment combined with heating did not significantly affect the amount of methane produced. Also, there was no significant difference in the amount of methane gas produced between NaOH treatment and KOH treatment. From the above results, optimum pretreatment for application of SMS to methane fermentation was alkaline treatment. It was also showed the unnecessity of heating and the effectiveness of KOH treatment for pretreatment of SMS on methane production.
展开▼
机译：在这项研究中，将各种预处理方法应用于废蘑菇底物（SMS），以高效回收甲烷。进行热水处理，使用H2SO4进行酸处理以及使用NaOH或KOH进行碱处理，并将其作为预处理进行评估。结果，在未处理的系统中产生的甲烷为119.1mL / g干重（D.W.），为55.5mL / g-D.W。在热水处理中为22.5 mL /g-D.W。在酸处理中为219.1 mL / g-D.W。在碱处理中，碱处理显示出最大量的甲烷回收。碱处理与加热相结合并没有显着影响甲烷的产生量。而且，在NaOH处理和KOH处理之间产生的甲烷气体的量也没有显着差异。根据以上结果，将SMS应用于甲烷发酵的最佳预处理是碱处理。还显示了不需要加热以及KOH处理对于甲烷生产中的SMS预处理的有效性。
展开▼
