ANAEROBIC DIGESTION CO-SUBSTRATE OF DAIRY COW MANURE AND TOFU CAKE: FOCUSING ON MIXING ORGANIC RATIO

IF 1 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Journal of Environmental Engineering and Landscape Management Pub Date : 2022-12-05 DOI:10.3846/jeelm.2022.18058
S. Sutaryo, R. Adiwinarti, Dian Sahrudi, Muhammad Misbahul Huda, Farhan Hendri Himawan, A. Ward
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Abstract

Anaerobic digestion of dairy cow manure (DCM) is constrained by a low methane production of animal manure. A method to overcome that is by co-digestion DCM and food industry by-product. This study investigated the process performance anaerobic co-digestion of DCM and tofu cake (TC) at different volatile solid (VS) mixing ratios. The treatments were partial substitutions of DCM with TC by 5%, 10%, and 15% (w/w) in reactors T2, T3, and T4 respectively, while T1 was served as control. Co-substrate of DCM and TC gave a positive effect (P < 0.05) on methane production by 24.23, 34.74, and 52.51% respectively for T2, T3, and T4 compared to the control reactor. Low total volatile fatty acids, ammonia nitrogen concentration, stable methane production and neutral pH values of all digested slurries indicate that TC is suitable to increase methane production of DCM up to a DCM/TC ratio of 2.92:1, in terms of VS.
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奶牛粪便和豆腐饼的厌氧消化共基质&以有机配比为重点
奶牛粪便(DCM)的厌氧消化受到动物粪便甲烷产量低的限制。克服这一问题的方法是通过共消化DCM和食品工业副产品。本研究考察了DCM和豆腐饼在不同挥发性固体(VS)混合比下的厌氧共消化工艺性能。处理是在反应器T2、T3和T4中用TC分别部分取代DCM 5%、10%和15%(w/w),而T1作为对照。与对照反应器相比,DCM和TC的共基质对T2、T3和T4的甲烷生成分别产生24.23%、34.74%和52.51%的积极影响(P<0.05)。所有消化浆料的低总挥发性脂肪酸、氨氮浓度、稳定的甲烷产量和中性pH值表明,就VS而言,TC适合将DCM的甲烷产量提高到2.92:1的DCM/TC比。
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来源期刊
CiteScore
1.90
自引率
7.70%
发文量
41
审稿时长
>12 weeks
期刊介绍: The Journal of Environmental Engineering and Landscape Management publishes original research about the environment with emphasis on sustainability.
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