High-rate thermophilic bio-methanation of the fine sieved fraction from Dutch municipal raw sewage: Cost-effective potentials for on-site energy recovery

Dara S.M. Ghasimi, Merle de Kreuk, Sung Kyu Maeng, Marcel H. Zandvoort and Jules B. van Lier

Applied Energy, 2016, vol. 165, issue C, 569-582

Abstract: Sieving of Dutch raw sewage over a 350μm screen, produces a cake layer called fine sieved fraction (FSF), an energy-rich material that contains mainly cellulosic fibers originating from toilet paper. The FSF biomethane potential (BMP) was studied under both mesophilic (35°C) and thermophilic (55°C) conditions, whereas the stability of the fed-batch digesters at both 35°C and 55°C was researched by varying the inoculum to substrate ratios (RI/S: 0.5–15). Results clearly showed advantages of thermophilic conditions over mesophilic conditions at all tested RI/S. Stable digestion was even possible at an RI/S of 0.5 at 55°C.

Keywords: Anaerobic digestion; Mesophilic, thermophilic; BMP; CHP, energy recovery (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (6)

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DOI: 10.1016/j.apenergy.2015.12.065

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