Functional Materials Laboratory (FML), School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
Functional Materials Laboratory (FML), School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
Bioresour Technol. 2019 Aug;286:121394. doi: 10.1016/j.biortech.2019.121394. Epub 2019 Apr 29.
Co-digestion of acorn slag waste (ASW) and dairy manure (DM) with two bio-based carbon (BC) accelerants are investigated via batch experiments under mesophilic condition. With the favorable synergistic effect of the mixed substrate and BC accelerant, the anaerobic digestion (AD) systems assembled with aloe peel-derived BC (2.16 g/L) show significantly improved methanogenesis on the basis of the optimum wet weight ratio of ASW to DM (1:3). The cumulative biogas yield is 580.9 mL/g VS, and the total chemical oxygen demand reduction is 79.37%. These results are higher than those of the AD systems without carbon-based accelerants. The feasibility of digestate utilization is evaluated by thermal and fertilizer analyses, which manifest outstanding stability and excellent fertility (6.93%-7.40%) of digestate in co-digestion systems. A general strategy for understanding the enhanced methanogenesis pathways, induced by BC in AD systems, is demonstrated. These important findings open an innovative opportunity for developing carbon-based accelerants in anaerobic co-digestion.
利用两种生物基碳（BC）促进剂，通过中温条件下的批处理实验，研究了橡实渣废物（ASW）和乳牛粪便（DM）的共消化。混合基质和 BC 促进剂的有利协同作用下，以 ASW 与 DM 的最佳湿重比（1:3）为基础，由芦荟皮衍生的 BC（2.16g/L）组装的厌氧消化（AD）系统显示出显著改善的产甲烷作用。累积沼气产量为 580.9mL/gVS，总化学需氧量减少 79.37%。这些结果高于没有基于碳的促进剂的 AD 系统。通过热和肥料分析评估消化物利用的可行性，表明共消化系统中消化物具有出色的稳定性和优异的肥力（6.93%-7.40%）。展示了一种理解 BC 在 AD 系统中增强产甲烷途径的一般策略。这些重要发现为开发厌氧共消化中的基于碳的促进剂开辟了创新机会。
