Process controls for mesophilic dark fermentation using a pH‐dependent feeding strategy without NaOH addition were examined. One reactor utilizing microorganism holdback and two continuously stirred‐tank reactors (CSTRs) with the same volume were employed. These were fed with pig manure and glucose as cosubstrates. Different hydraulic retention times were applied. The target pH was 5.5 within a limited range and controlled by varying organic loading rate. When the pH target interval was exceeded, the hydrogen production rate (HPR) decreased, and CH₄ was produced. A pH below the target interval had positive effects on the HPR.

中文翻译：

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pH依赖性饲料通过猪粪和葡萄糖的黑暗发酵生产生物氢

使用pH依赖的进料策略（不添加NaOH）检查了嗜温暗发酵的过程控制。使用了一个利用微生物抑制的反应器和两个相同容积的连续搅拌釜反应器（CSTR）。用猪粪和葡萄糖作为共底物喂养它们。应用了不同的水力停留时间。目标pH在有限范围内为5.5，并通过改变有机负载率进行控制。当超过pH目标间隔时，氢产生速率（HPR）降低，并产生CH ₄。pH值低于目标区间对HPR有积极影响。