Abstract
This study investigated the effects of trace elements (TEs) on the anaerobic digestion (AD) of food waste (FW) in laboratory-scale semi-continuously fed anaerobic digesters. The duration of digesters operation was approximately 400days. Organic loading rates (OLRs) ranged from 1.0 to 5.5gVSL−1d−1 at 37°C. Results showed that methane production of the digester was severely inhibited at a volatile fatty acid (VFA) concentration of 30,000mgL−1 at OLR of 4.0gVSL−1d−1 in the absence of TEs. Contrary to the failed digesters, a stable performance was achieved in the TEs added digesters. High methane yield (approximately 465.4mLCH4g−1VSadded) was obtained, and no significant accumulation of VFA was observed in the TEs added digesters at OLR of 1.0–5.0gVSL−1d−1 and HRT of 40days. These findings strongly indicated that the addition of TEs has an important impact on the operation stability of AD of FW.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
