Journal
WATER ENVIRONMENT RESEARCH
Volume 91, Issue 3, Pages 259-268Publisher
WILEY
DOI: 10.1002/wer.1048
Keywords
anaerobic; digestate; residual biogas; treatment
Funding
- Office of Scientific Research Projects Coordination of Middle East Technical University [BAP-03-11-2016-002]
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Although anaerobic digestion is a well-established technology, the treatment and disposal of the digestate still presents a challenge due to lack of viable methods for processing. The residual organic matter in digestates also creates a significant residual biogas potential. This fact indicates that the digestates need further processing not only to reduce their organic content for disposal, but also to capture the biogas associated with this residual organic content. This study investigated anaerobic treatment and residual biogas potential of digestates obtained from five full-scale farm-based digesters. The results indicated that it was possible to reduce the total chemical oxygen demand (CODt) of the digestates with an efficiency of 21%-84%. The corresponding biogas yields of digestates ranged between 0.078 and 0.326 L-biogas/g VSadded. This level of biogas production is comparable to the biogas production potential of several commonly used raw substrates.(C) 2019 Water Environment Federation
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