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从食物垃圾、牛粪和猪粪的厌氧共消化中产生能源。

Energy generation from anaerobic co-digestion of food waste, cow dung and piggery dung.

机构信息

Department of Civil Engineering, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria.

Sustainable Management of Natural Resources and Environment Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.

出版信息

Bioresour Technol. 2020 Oct;313:123694. doi: 10.1016/j.biortech.2020.123694. Epub 2020 Jun 15.

Abstract

The study investigated bioenergy generation from anaerobic co-digestion of food wastes (FW), cow dung (CD) and piggery dung (PD). The physicochemical parameters of the substrates were determined before and after digestion following standard procedures after mechanical pretreatment. Throughout the study, pH remained slightly alkaline while temperature varied between 26 and 32 °C. The highest cumulative biogas yield of 0.0488 L was recorded from the digestion of FW + CD + PD on the ninth day. After analyses, the highest methane content of 64.6 was obtained from the digestion of FW + PD while the lowest (54.0%) was from the digestion of FW only. Overall, cumulative biogas production for the four digestion regimes followed the order: FW + CD + PD, FW + PD, FW + CD and FW only respectively. Accumulation of VFAs was recorded at a slow rate during the digestions.

摘要

该研究调查了从食物垃圾(FW)、牛粪(CD)和猪粪(PD)的厌氧共消化中产生生物能源。在机械预处理后,按照标准程序对底物的理化参数进行了消化前后的测定。在整个研究过程中,pH 值保持微碱性,而温度在 26 至 32°C 之间变化。从第 9 天 FW+CD+PD 的消化中记录到最高的累积生物气产量为 0.0488 L。经过分析,FW+PD 消化得到的甲烷含量最高,为 64.6%,而仅 FW 消化得到的甲烷含量最低,为 54.0%。总的来说,四种消化方式的累积生物气产量依次为:FW+CD+PD、FW+PD、FW+CD 和仅 FW。在消化过程中,VFAs 的积累速度较慢。

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