Methane emission during on-site pre-storage of animal manure prior to anaerobic digestion at biogas plant: Effect of storage temperature and addition of food waste. (1st November 2018)

• Record Type: Journal Article
• Authors: Feng, Lu; Ward, Alastair James; Moset, Veronica; Møller, Henrik Bjarne
• Is Part Of: Journal of environmental management. Volume 225(2018)
• Page Start: 272
• Page End: 279
• Publication Date: 2018-11-01
• Subjects: Cattle manure -- Pig manure -- Greenhouse gases -- Anaerobic digestion -- Pre-storage; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2018.07.079
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: This study investigated the temperature dependency of CH4 emission from pre-storage of animal manure prior to anaerobic digestion at 15, 20, 25 and 30 °C using lab-scale anaerobic digesters. The manure was added and removed daily to simulate the pre-storage process at biogas plants. CH4 emission accounted for 1–46% of total CH4 potential from pig manure (PM) and 1–2% of that from cattle manure (CM) at the investigated temperatures, with significant increases above 25 °C. Addition of food waste (FW) reduced the CH4 emission when storage temperature was 20 °C or lower for PM and 25 °C or lower for CM due to volatile fatty acid accumulation and lower pH (<5.5) but emissions increased with higher storage temperatures. Graphical abstract: Highlights: The temperature dependency of CH4 emissions during storage of manure was evaluated. The effect of co-storage of manure with food waste was investigated. Food waste addition inhibited CH4 emission at lower temperatures. Emission at higher temperatures increased with addition of food waste.