食物垃圾和牛粪的干式厌氧共消化：总固体、底物比例和热预处理对生物有机肥甲烷产量和质量的影响。
Dry anaerobic co-digestion of food waste and cattle manure: Impact of total solids, substrate ratio and thermal pre treatment on methane yield and quality of biomanure.
机构信息
Bioengineering and Environmental Sciences (BEES) Lab, Environmental Engineering and Fossil Fuels (EEFF) department, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad 500007, India.
Bioengineering and Environmental Sciences (BEES) Lab, Environmental Engineering and Fossil Fuels (EEFF) department, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad 500007, India; School of Engineering, Royal Melbourne Institute of Technology (RMIT), Australia.
出版信息
Bioresour Technol. 2018 Apr;253:273-280. doi: 10.1016/j.biortech.2018.01.050. Epub 2018 Jan 11.
The objective of the present study is to assess the impact of TS concentration, substrate mixing ratio (co digestion) and thermal pretreatment on biogas production, methane yield, VS reduction (%) and quality of biomanure through dry anaerobic digestion (DAD) of food waste (FW) and cattle manure (CM). Results divulged that the optimum methane yield and biomanure of 0.18 and 0.21 m CH/(kg VS reduced) and 3.15 and 2.8 kg/kg waste was obtained from FW at TS of 25% and 30% at an HRT of 41 and 31 days respectively whereas it was 0.32 and 0.43 m CH/(kg VS reduced) and 2.2 and 1.15 kg/kg waste from pretreated FW at an HRT of 16 and 20 days correspondingly. Improvement of methane from 62 to 81% was obtained due to thermal pretreatment. The highest nutrient recovery in terms of N, P, K was found to be 5.14, 2.6 and 3.2 respectively.
本研究的目的是评估 TS 浓度、底物混合比（共消化）和热预处理对通过干厌氧消化（DAD）处理食物垃圾（FW）和牛粪（CM）时沼气产量、甲烷产量、VS 减少（%）和生物有机肥质量的影响。结果表明，在 TS 为 25%和 30%，HRT 分别为 41 和 31 天时，FW 的最佳甲烷产量和生物有机肥分别为 0.18 和 0.21m³ CH/（kg VS 减少）和 3.15 和 2.8kg/kg 废物；而在 HRT 分别为 16 和 20 天时，预处理 FW 的最佳甲烷产量和生物有机肥分别为 0.32 和 0.43m³ CH/（kg VS 减少）和 2.2 和 1.15kg/kg 废物。热预处理可将甲烷产量从 62%提高到 81%。发现氮、磷、钾的最高养分回收率分别为 5.14、2.6 和 3.2。
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