番茄植物残渣与牛粪及食物垃圾厌氧共消化的合成评价

IF 12.4 Q1 ENVIRONMENTAL SCIENCES Resources Environment and Sustainability Pub Date : 2023-09-01 DOI:10.1016/j.resenv.2023.100119
Xiaorui Xue , Xiaojue Li , Naoto Shimizu
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引用次数: 0

摘要

厌氧消化是处理有机废物的一种有效方法。然而,厌氧反应器的性能还有待提高和综合分析。本研究提出了番茄植物残渣、牛粪和食物垃圾厌氧共消化的三元共原料策略。考察了不同原料组成、料接种比和总固形物(TS)含量的影响。其中,以60%番茄残渣、20%牛粪、20%餐厨垃圾为混合料,料接种比为0.7时,累积沼气(3.230 L)、甲烷产量(2.575 L)、甲烷含量(79.71%)、共消化性能指数(1.65)和挥发性固体(VS)去除率(60.59%)最高。改变原料组成引起比沼气产率和比甲烷产率的变化。在TS含量为5%、10%、15%和20%的试验中,较高的TS含量增加了沼气和甲烷的产量,因为反应器中可生物降解部分的数量增加了。然而,由于接种物中微生物对高总固体含量的分解效率低下,存在挥发性脂肪酸超载和VS去除率降低的风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Synthesis evaluation on thermophilic anaerobic co-digestion of tomato plant residue with cattle manure and food waste

Anaerobic digestion (AD) is an effective method for treating organic waste. However, the performance of anaerobic reactors needs to be improved and comprehensively analyzed. This study proposed a ternary co-feedstock strategy for thermophilic anaerobic co-digestion of tomato plant residue, cattle manure, and food waste. The effects of changing the feedstock composition, feedstock-to-inoculum ratio, and total solids (TS) content were investigated. Among the tested mixtures, a ternary mixture of 60% tomato plant residue, 20% cattle manure, and 20% food waste with a feedstock-to-inoculum ratio of 0.7 gave the highest cumulative biogas (3.230 L), methane yield (2.575 L), methane content (79.71%), co-digestion performance index (1.65) and volatile solids (VS) removal rate (60.59%). Changing the feedstocks compositions caused changes in the specific biogas yield and specific methane yield. In tests with TS contents of 5%, 10%, 15%, and 20%, a higher TS content increased biogas and methane production because of increases in the amount of the biodegradable fraction in the reactor. However, there was a risk of volatile fatty acid overloading and a decrease in the VS removal rate because of inefficient decomposition of the high total solids content by microbes in the inoculum.

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来源期刊
Resources Environment and Sustainability
Resources Environment and Sustainability Environmental Science-Environmental Science (miscellaneous)
CiteScore
15.10
自引率
0.00%
发文量
41
审稿时长
33 days
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