Anaerobic co-digestion between canned sardine wastewater and glycerol waste for biogas production: Effect of different operating processes

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Abstract

The effect of glycerol waste (GW) concentration was studied in anaerobic co-digestion with canned sardine wastewater (CSW), has been examined using the 1-stage mesophilic (P1), 1-stage thermophilic (P2) and 2-stage mesophilic (P3) process. P3 process was the best process, could improve the biogas production (bio-hythane) in the case of canned sardine industry. Anaerobic batch co-digestion between 4%GW (v/v) and CSW in P3 had the maximum yield of hydrogen and methane. The hydrogen and methane yield were 43.00 ml H2/g CODr and 303.69 ml CH4/g CODr, respectively. Total hydrogen and methane production increased 648.57 and 7.75 fold compared with the single-digestion of CSW at 5 and 45 days of fermentation. The total energy yield in bio-hythane formation was 8.07 MJ/kg COD with consisting 43.11% CH4, 21.45%H2 and 35.43% CO2. Using GW as co-substrate was the synergism for increasing the potential to produce hydrogen and methane (bio-hythane) in CSW.

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Panpong, K., Srimachai, T., Nuithitikul, K., Kongjan, P., O-Thong, S., Imai, T., & Kaewthong, N. (2017). Anaerobic co-digestion between canned sardine wastewater and glycerol waste for biogas production: Effect of different operating processes. In Energy Procedia (Vol. 138, pp. 260–266). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2017.10.050

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