Enhancing anaerobic digestion for rural wastewater treatment with granular activated carbon (GAC) supplementation.
Notwithstanding many efforts to increase the efficiency of anaerobic digestion at low-temperature (winter) conditions, a cost-effective and efficient method is lacking. This study proposes a low-cost method of low-temperature (<35 °C) anaerobic digestion of wastewater, involving supplementation with granular activated carbon (GAC). Supplementation with GAC was found to reduce the lag time by 29.8% (from 15.1 to 10.6 days) and increase the maximum methane production rate by 23.4% (from 6.4 to 7.9 mL/day) at 25 °C. Network analysis demonstrated a strong co-occurrence of Syntrophobacteriales and hydrogenotrophic methanogens (Methanobacteriaceae; WSA2; Methanoregulaceae). GAC supplementation can drastically reduce the time required for organic matter decomposition and methane production, thereby increase the efficiency of wastewater treatment.
['Park|Jeong-Hoon|JH|', 'Park|Jong-Hun|JH|', 'Lee|Sang-Hoon|SH|', 'Jung|Sokhee P|SP|', 'Kim|Sang-Hyoun|SH|']
D000693:Anaerobiosis D019149:Bioreactors D002606:Charcoal D019587:Dietary Supplements D008697:Methane D062065:Waste Water
Anaerobic digestion Granular activated carbon Network analysis Conductive materials Low temperature