Federal University of Ceará, Departament of Chemical Engineering, Ceara, Brazil.
University of Naples Federico II, Department of Chemical, Materials and Production Engineering, P.le Tecchio, 80, 80125, Naples, Italy.
J Biotechnol. 2018 Nov 20;286:71-78. doi: 10.1016/j.jbiotec.2018.09.004. Epub 2018 Sep 8.
Cashew apple bagasse (CAB) has been studied as feedstock for the biohydrogen production using Clostridium roseum and the dark fermentation process. Pretreatment with alkaline hydrogen peroxide (CAB-AHP) on raw material and the acid and enzymatic hydrolysis have been taken into account to evaluate the H yields. Results show that the acid hydrolysate obtained from CAB produced higher H molar yield (HMY) (15 mmol/L) than the acid hydrolysate from CAB-AHP (4.99 mmol/L), These HMY were noticeably higher than values obtained from the enzymatic hydrolysate of CAB-AHP (1.05 mmol/L) and the enzymatic hydrolysate of CAB (0.59 mmol/L). The maximum biohydrogen productivity (12.57 mL/L.h) was achieved using the acid hydrolysate from CAB, with a H content of about 72% vol, that could be satisfactory in view of an energetic applications of the biogas. Results suggest that CAB could be considered for the hydrogen production process, providing an appropriate destination for this lignocellulosic biomass, and consequently, reducing the environmental impact it can exert.
腰果苹果渣（CAB）已被研究用作产氢的原料，使用罗斯氏产丁酸梭菌和暗发酵过程。对原料进行碱性过氧化氢预处理（CAB-AHP），并进行酸水解和酶水解，以评估氢的产量。结果表明，CAB 的酸水解产物比 CAB-AHP 的酸水解产物（4.99mmol/L）具有更高的摩尔产氢率（HMY）（15mmol/L）。这些 HMY 明显高于 CAB-AHP 的酶解产物（1.05mmol/L）和 CAB 的酶解产物（0.59mmol/L）。使用 CAB 的酸水解产物可实现最大的生物氢气生产率（12.57mL/L.h），其氢气含量约为 72%vol，这在沼气的能量应用方面是令人满意的。结果表明，CAB 可用于产氢过程，为这种木质纤维素生物质提供了一个合适的归宿，从而减少其对环境的影响。
