温和湿式空气预处理糖蜜乙醇蒸馏残液的高效厌氧消化：一种比较方法。
Efficient anaerobic digestion of a mild wet air pretreated molasses ethanol distillery stillage: A comparative approach.
作者信息
Gebreeyessus Getachew Dagnew, Sreekrishnan Trichur Ramaswamy, Mekonnen Andualem, Chebude Yonas, Alemayehu Esayas
机构信息
Africa Center of Excellence for Water Management, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia.
Department of UEM, Kotebe Metropolitan University, P.O. Box 31248, Addis Ababa, Ethiopia.
出版信息
Heliyon. 2020 Nov 18;6(11):e05539. doi: 10.1016/j.heliyon.2020.e05539. eCollection 2020 Nov.
The effect of a mild, wet air pretreatment and the subsequent anaerobic digestion (AD) was examined on the recovery of a complex and toxic molasses ethanol distillery stillage. The biogas yield and organics removal due to pretreatment were compared with the raw stillage AD. The application of a scoria support in this industrial residue AD process stability was also assessed. Consequently, a statistically significant cumulative specific methane recovery difference (p-value = 0.000) with an almost complete biological oxygen demand (BOD) removal and a significant chemical oxygen demand (COD) reduction, which were 100% and 92% respectively were achieved. Additionally, the biogas recovery rate was hastened due to pretreatment. The application of scoria, whose property has been instrumentally inspected, has helped stabilize the pH in the AD systems. In a comparative approach, this study suggests the energy benefit and an ecofriendly discharge of stillage by the ethanol industry towards sustainability.
研究了温和潮湿空气预处理及其后的厌氧消化（AD）对复杂且有毒的糖蜜乙醇蒸馏酒糟回收利用的影响。将预处理后的沼气产量和有机物去除情况与未处理的酒糟厌氧消化进行了比较。还评估了在这种工业废渣厌氧消化过程中使用火山渣载体对稳定性的影响。结果表明，累积特定甲烷回收率存在统计学显著差异（p值 = 0.000），生物需氧量（BOD）几乎完全去除，化学需氧量（COD）显著降低，分别达到了100%和92%。此外，预处理加快了沼气回收率。经检测，火山渣的使用有助于稳定厌氧消化系统中的pH值。通过对比研究，本研究表明乙醇行业对酒糟进行能源回收利用并实现环保排放，有助于实现可持续发展。
Zotero 插件