Improvement of hydrogen fermentation of galactose by combined inoculation strategy

Effect of Different Inoculum Combination on Biohydrogen Production from Melon Fruit Waste

“…Concern about rapid depletion of fossil fuels and environmental pollution are stimulating studies on alternative energy sources to reduce dependence on fossil fuels (Das and Veziroglu, 2001). Hydrogen (H2) is a potential energy carrier because it is renewable (Karthic and Joseph, 2012), clean (Sivagurunathan et al, 2016) and has a very high energy yield (122 kJ/g). It is 2.75 times greater than fossil fuels (Hand and Shin, 2004;Kapdan and Kargi, 2006;Choi and Ahn, 2015).…”

“…It is 2.75 times greater than fossil fuels (Hand and Shin, 2004;Kapdan and Kargi, 2006;Choi and Ahn, 2015). Hydrogen can be produced biologically and chemically (Sivagurunathan et al, 2016;Hand and Shin, 2004;. Biological hydrogen production through photosynthesis and fermentation are more environmentally friendly with lower energy requirements than chemical production processes Pachapur et al, 2015).…”

“…Biological hydrogen production through photosynthesis and fermentation are more environmentally friendly with lower energy requirements than chemical production processes Pachapur et al, 2015). Anaerobic fermentation is simpler because the process does not require light (Sivagurunathan et al, 2016;Hand and Shin, 2004) and it can apply to wide range of feedstocks (Nath and Das, 2004). Current research has studied various types of substrates for hydrogen production, such as glucose , sucrose (Choi and Ahn, 2015), galactose (Sivagurunathan et al, 2016), cassava starch (Tien et al, 2016), the starch residue of sweet potato (Yokoi et al, 2001), sugarcane bagasse (Pattra et al, 2008) and extracts of pineapple wastes (Ruknongsaeng et al, 2005).…”

“…Anaerobic fermentation is simpler because the process does not require light (Sivagurunathan et al, 2016;Hand and Shin, 2004) and it can apply to wide range of feedstocks (Nath and Das, 2004). Current research has studied various types of substrates for hydrogen production, such as glucose , sucrose (Choi and Ahn, 2015), galactose (Sivagurunathan et al, 2016), cassava starch (Tien et al, 2016), the starch residue of sweet potato (Yokoi et al, 2001), sugarcane bagasse (Pattra et al, 2008) and extracts of pineapple wastes (Ruknongsaeng et al, 2005). The availability, cost, carbohydrate content and biodegradability are the important criteria for the substrate selection (Kapdan and Kargi, 2006;Cai, et al, 2009).…”

“…According to Reith et al (2003), the formation of biogas (anaerobic digestion) induced by various types of microbes, usually obtained through a natural enrichment of each substrate used. The composition and amount of bacteria involved in this process will vary depending on the type of substrate and fermentation conditions were applied, causing the variation of yield and biogas production rate (Sivagurunathan et al, 2016;Pachapur et al, 2015;Insam et al, 2010). Sivagurunathan et al (2014) conducted a study on the use of a combination of three different mixed cultures (cow dung, pig slurry, and sewage sludge) to increase hydrogen production using glucose as a substrate.…”