Experimental evaluation of biogas production from anaerobic co-digestion of cactus cladodes, cow dung, and goat manure

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-14 DOI:10.1007/s43153-024-00437-z

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Abstract

Anaerobic co-digestion of organic wastes and plant biomass generates an environmentally friendly energy source. Anaerobic co-digestion of cow dung (CD), goat manure (GM), and cactus cladodes (CC) was investigated under mesophilic laboratory conditions. A 14-day-long daily biogas production potential and methane content were evaluated for the three substrates co-digested at different mix ratios. Physicochemical properties showed significant differences between the raw and digested substrates. Biogas production started after the first day of anaerobic digestion for all substrates, with the peak observed near day fourteen. The anaerobic co-digestion of 66.7% GM and 33.3% CC substrate mixture produced the highest biogas yield. The cumulative biogas production study also revealed that the same substrate combination achieved better biogas yield. The anaerobic digestion of CD, GM, and CC showed a significant increase in biogas yield followed by a reduction in volatile and total solid contents. The 100% CC, 33.3% CC + 66.7% CD, 33.3% CC + 66.7% GM, and 33.33% CC + 33.33% CD + 33.33% GM anaerobic digestions achieved biogas with methane content (%) of 56.02, 72.6, 56.65, and 67.95, respectively. The 33.33% CC + 33.33% CD + 33.33% GM anaerobic co-digestion achieved the highest methane content compared to other substrates. The CC + CD + GM and CC + GM mixtures had a C/N ratio ranging from 20 to 30, contributing to better biogas yield with more methane content than substrates deviating from such a ratio. For all substrates, the methane content of the biogas ranged from 50 to 72.6%. The study also revealed that the co-digestion of CC with GM resulted in a better cummulative biogas yield and cumulative methane content.

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仙人掌菌块、牛粪和羊粪厌氧共同消化产生沼气的实验评估

摘要有机废物和植物生物质的厌氧共同消化可产生一种环境友好型能源。研究人员在嗜中性实验室条件下对牛粪（CD）、羊粪（GM）和仙人掌（CC）进行了厌氧协同消化。对这三种基质以不同的混合比例进行协同消化后，长达 14 天的日沼气生产潜力和甲烷含量进行了评估。生基质和消化基质之间的理化特性存在显著差异。所有基质在厌氧消化第一天后就开始产生沼气，并在第 14 天达到高峰。厌氧共同消化 66.7% 的 GM 和 33.3% 的 CC 基质混合物产生的沼气产量最高。累积沼气产量研究还表明，相同的基质组合能获得更好的沼气产量。对 CD、GM 和 CC 进行厌氧消化后，沼气产量显著增加，挥发性物质和总固体含量随之减少。100% CC、33.3% CC + 66.7% CD、33.3% CC + 66.7% GM 和 33.33% CC + 33.33% CD + 33.33% GM 厌氧消化产生的沼气甲烷含量（%）分别为 56.02、72.6、56.65 和 67.95。与其他基质相比，33.33% CC + 33.33% CD + 33.33% GM 厌氧协同消化产生的甲烷含量最高。CC+CD+GM和CC+GM混合物的C/N比在20至30之间，与偏离这一比例的基质相比，能产生更好的沼气，甲烷含量更高。在所有基质中，沼气的甲烷含量在 50% 至 72.6% 之间。研究还表明，CC 与 GM 共同消化可产生更高的累积沼气产量和累积甲烷含量。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.