This research assesses the impacts of hydrothermal (120 °C for 30 min), dilute acid (2%(w/w) H₂SO4 at 120 °C for 30 min) and alkali (6% (w/w) NaOH at 35 °C for 24 h)pretreatments on the methane yield from date palm waste “Takarboucht” cultivar. The pretreated and untreated date palm waste (DPW) were digested at mesophilic temperature (36 °C) for 20 days. The highest soluble chemical oxygen demand (sCOD) was obtained by DPW hydrolysate from alkali pretreatment. The highest methane yield of 161.86 ml/g VS was obtained from untreated DPW. Among all pretreatments, higher methane yield was obtained from hydrothermally pretreated DPW (153.35 ml/g VS), followed by acid pretreated DPW (141.65 ml/g VS) and alkali pretreated DPW (50.78 ml/g VS). Alkali pretreatment improved the solubilization of DPW, however, it may not necessarily provide an enhancement in the methane yield. The optimization of the conditions of each pretreatment is proposed.

这项研究评估了水热（120°C 30分钟），稀酸（2％（w / w）H ₂ SO4在120°C 30分钟）和碱（6％（w / w）NaOH在35°C下）的影响°C进行24小时）对椰枣废料“ Takarboucht ”品种甲烷产量的预处理。在中温温度（36°C）下将预处理和未处理的枣椰子废料（DPW）消化20天。DPW水解物通过碱预处理获得最高的可溶性化学需氧量（sCOD）。从未经处理的DPW获得最高的甲烷产量161.86 ml / gVS。在所有预处理中，通过水热预处理的DPW（153.35 ml / g VS），随后的酸预处理的DPW（141.65 ml / g VS）和碱预处理的DPW（50.78 ml / g VS）可获得更高的甲烷产率。碱预处理可以改善DPW的溶解性，但是，不一定可以提高甲烷的收率。提出了每种预处理条件的优化。