Experimental Determination of Effect of Total Solid (TS) and Volatile Solid (VS) on Biogas Yield

Abstract

Abstract:In this research work, eight different samples of substrates with varying percentage total solid (TS) and volatile solid (VS) were used. The samples which comprises mainly of water hyacinth, waste water (i.e., from ice fish cold room, septic tanks, and abattoir), pig dung, cow dung, corn cobs, potato peels, pineapple peels, rice left over, yam peels, cassava peels, orange peels, sweet potato peels, garri left over, plantain peels, beans waste, banana peels and vegetables, etc., were codigested. In each of the samples, 10kg of substrates were used and the experiment was conducted within mesophilic temperature range of 36°C-37°C, pH range of 6.9-7.4 and hydraulic retention time (HRT) of thirty-three (33) days. It was observed that the quantity of biogas yield from these substrates increase with increasing percentage volatile solid and decrease with decreasing percentage volatile solid concentration below and above the optimum value of 91.1% (2.88kg) volatile solids which gave the maximum amount of biogas yield for the samples of substrates to be 1.01kg (23.6%), 2.01kg (60.75%), 2.55kg (84.72%), 2.41kg (68.0%), 2.35kg (67.67%), 1.85kg (59.23%), 1.45kg (25.39%). Furthermore, the results obtained reveal that bio-digesters should be run at 10.16% total solids, since optimum cumulative biogas generation is achieved at this %TS concentration.

Enhanced Biogas Production from Anaerobic Codigestion of Lignocellulosic Waste for Efficient Bioenergy Utilization in Heating and Combustion Engine

“…In Table 2b the highest TS and VS removal rate was observed in reactor A 2 which involved the codigestion of all substrate with 77.72% TS and 87.19% VS removal efficiencies. The reduction in TS and VS after anaerobic digestion agrees with the findings of previous studies [24].…”

Review on Solid Waste Generation and Management in Sub-Saharan Africa: A Case Study of Nigeria

“…The two biochemical process options are anaerobic digestion (AD) and aerobic fermentation (Orhorhoro et al, 2016a;Orhorhoro et al, 2018a). In AD process, high moisture content (85-90%) biomass is converted into biogas by microorganisms in the absence of oxygen (Orhorhoro et al, 2017b;Orhorhoro et al, 2017bc). The raw biogas is purified before it can be used, and this is because of the presence of impurities such as hydrogen sulphide, dust, water, siloxane and halogenates hydrocarbons.…”

Optimization of Biogas Production by Solid State Anaerobic Digestion (SS-AD) Method from Water Hyacinth with Response Surface Methodology (RSM)

“…The values obtained were not in the range of variations of the variables determined for the research due to optimum biogas production at concentrations below 15%, whereas for SS-AD method, the TS concentration used is > 15%. As well as based on research conducted by Orhorhoro, et al [9] which resulted that the optimum TS concentration value of 10.16% to produce high biogas production. While based on research conducted by E.Suryaning, et al [2] TS concentration was obtained at 5% to produce high biogas production followed by TS concentration value of 7% and 9%.…”