Mesophilic anaerobic co-digestion of acorn slag waste with dairy manure in a batch digester: Focusing on mixing ratios and bio-based carbon accelerants
Mesophilic anaerobic co-digestion of acorn slag waste with dairy manure in a batch digester: Focusing on mixing ratios and bio-based carbon accelerants
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在间歇式消化器中对橡子渣废物与奶牛粪便进行中温厌氧共消化：重点关注混合比和生物基碳促进剂
DOI：
10.1016/j.biortech.2019.121394
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发表时间：
2019
影响因子：
11.4
通讯作者：
Jia Bo
中科院分区：
文献类型：
--
作者：
Wang Ziqi;Yun Sining;Xu Hongfei;Wang Chen;Zhang Yangliang;Chen Jiageng;Jia Bo
在中温条件下，研究了两种生物基碳（BC）促进剂对橡子渣（ASW）和乳粪（DM）的共消化作用。在混合底物和BC促进剂的良好协同作用下，在ASW与DM的最佳湿重比（1:3）的基础上，由芦荟皮衍生BC（2.16 g/L）组成的厌氧消化（AD）体系显著提高了产甲烷率。累计产气量为580.9 mL/g VS，总化学需氧量降低79.37%。这些结果高于无碳基助燃剂的AD体系。通过热分析和肥料分析评价了消化液利用的可行性，结果表明，在共消化系统中，消化液具有良好的稳定性和肥力（6.93% ~ 7.40%）。本文展示了一种理解BC在AD系统中诱导的强化甲烷生成途径的一般策略。这些重要的发现为开发厌氧共消化的碳基促进剂开辟了一个创新的机会。
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.