Journal article
Performances of anaerobic co-digestion of fruit & vegetable waste (FVW) and food waste (FW): Single-phase vs. two-phase
Bioresource technology, Vol.144, pp.80-85
09/2013
Handle:
https://hdl.handle.net/2376/117721
PMID: 23867528
Abstract
•Single & two-phase anaerobic co-digestion of FVW & FW was compared at various OLRs.•Ethanol-type fermentation controlled the digestion as OLR<2.0g(VS)L−1d−1.•Propionic acid accumulation caused the unstable digestion as OLR>2.0g(VS)L−1d−1.•Single-phase digestion presented higher CH4 production as OLR was in low levels.•Two-phase digestion presented more stable and higher buffering to high OLR.
The co-digestion of fruit & vegetable waste (FVW) and food waste (FW) was performed at various organic loading ratios (OLRs) in single-phase and two-phase system, respectively. The results showed that the ethanol-type fermentation dominated in both digestion processes when OLR was at low levels (<2.0g(VS)L−1d−1). The propionic acid was rapidly accumulated as OLR was increased to higher levels (>2.0g(VS)L−1d−1), which could cause unstable anaerobic digestion. Single-phase digestion was better than two-phase digestion in term of 4.1% increase in CH4 production at lower OLRs (<2.0g(VS)L−1d−1). However, at higher level of OLR (⩾2.0g(VS)L−1d−1), two-phase digestion achieved higher CH4 production of 0.351–0.455L(gVS)−1d−1, which were 7.0–15.8% more than that of single-phase. Additionally, two-phase digestion presented more stable operation, and higher OLR treatment capacity. Furthermore, comparison of these two systems with bioenergy recovery revealed that two-phase system overall presented higher bioenergy yield than single-phase.
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Details
- Title
- Performances of anaerobic co-digestion of fruit & vegetable waste (FVW) and food waste (FW): Single-phase vs. two-phase
- Creators
- Fei Shen - Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR ChinaHairong Yuan - Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR ChinaYunzhi Pang - Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR ChinaShulin Chen - Department of Biological Systems Engineering, Washington State University, L.J. Smith 213, Pullman, WA 99163, USABaoning Zhu - Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR ChinaDexun Zou - Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR ChinaYanping Liu - Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR ChinaJingwei Ma - Department of Biological Systems Engineering, Washington State University, L.J. Smith 213, Pullman, WA 99163, USALiang Yu - Department of Biological Systems Engineering, Washington State University, L.J. Smith 213, Pullman, WA 99163, USAXiujin Li - Centre for Resource and Environmental Research, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China
- Publication Details
- Bioresource technology, Vol.144, pp.80-85
- Academic Unit
- Biological Systems Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900583060101842
- Language
- English
- Resource Type
- Journal article