Abstract
The effects of the mixing ratio of excess sludge (ES) with chicken manure (CM) on methane yield and digestate dewaterability were investigated at thermophilic and mesophilic temperatures. Batch experiments were performed at five different volatile solid ratios (ES/CM). Compared with anaerobic digestion of ES alone, codigestion of ES with CM increased methane yield 82.4–123.1 mL g−1-VSadded (mesophilic) and 33.9–171.3 mL g−1-VSadded (thermophilic), respectively. The normalized capillary suction time (NCST) and TS of thickened digestate (3.09–8.29 s g−1-TS, 17.51 %–18.83 %) at mesophilic temperatures were superior to these (6.81–10.14 s g−1-TS, 16.66 %–18.30 %) at thermophilic temperatures. But the gap decreased with increasing CM proportion in the substrate. The results indicated that anaerobic codigestion of ES and CM at a proper mixing ratio (ES/CM = 1:1.5–2) could obtain a high methane yield and an adequate digestate dewaterability.
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.
