Prediction of hydrogen sulphide production during anaerobic digestion of organic substrates

Investigation of the optimal percentage of green seaweed that may be co-digested with dairy slurry to produce gaseous biofuel

“…The minimum recommended ratio is 40. Sulphur available for reduction or fermentation to H 2 S is proportional to the biodegradable content of carbon in the substrate (Peu et al, 2012). A substrate with a C:S below 40 will tend to have larger accumulations of H 2 S gas as experienced by seaweed digestion trails (Peu et al, 2012).…”

Sorbents Used for Biogas Desulfurization in the Adsorption Process

“…Contamination of biogas with H 2 S can be controlled at various stages of biogas production, beginning from raw materials, an anaerobic digestion process, and finally biogas desulfurization [15]. The biogas desulfurization methods include: biological [16,17] and catalytic oxidation, a method with bog iron ore, a wet method, and adsorption techniques.…”

Anaerobic Digestion

“…The inorganic and organic sulfur content of a biomass feedstock can also have a deleterious effect on the anaerobic digestion process and the quality of the biogas produced. These compounds are reduced by bacteria into dissolved sulfides, which can lead to foul smelling, toxic and corrosive hydrogen sulfide gas [41]. Table 2.2 illustrates the concentrations of S in various biomass feedstocks.…”