Abstract by Carson Bateman
Chemistry and Biochemistry
Efficient Conversion of Waste Streams to Biomethane
Anaerobic digestion (AD) is a renewable energy process that converts biowaste into natural gas (methane). Current knowledge confirms that this process produces natural gas using various sources of biowaste, but only a portion of that is methane. A variety of pretreatment methods have been used in an effort to increase the efficiency of conversion of waste into natural gas using anaerobic digestion. Pretreatment methods have proven effective for wastes like waste activated sludge (WAS) and manure, but a large amount of the carbon is still not converted into gas; consequently, we are investigating the potential of using the hyperthermophilic bacterium C. Bescii as a means of pretreatment to increase carbon conversion. Data were collected on the efficiency of pretreatment using C. Bescii followed by anaerobic digestion from our full-scale pilot facility. Pretreatment using C. Bescii was shown to increase the percent carbon conversion in manure by as much as 2x and a complementary reduction in solids was also observed.