Influence of Sludge Ratio and Temperature on the Integrated Methane Fermentation of Organic Fraction of Municipal Solid Waste and Biosludge

Thermophilic dry methane fermentation of municipal solid waste with various compositions

“…It has also been reported that because microbial shift can be changed due to co-fermentation, VFA accumulation was maximized by the VFA co-fermentation of FW and PW [32] as observed in the present study. However, studies have also reported that the critical concentration of TA-N in thermophilic methane fermentation was lower than that in mesophilic methane fermentation [19] and that inhibition by TA-N led to VFA accumulation [33,34]. In addition, Calli et al [28] reported that FAN affected the performance of methane fermentation, and Ho and Ho [35] mentioned that a decline in pH was effective in the inhibition by FAN.…”

Evaluation of regional bioenergy recovery by local methane fermentation thermal recycling systems

“…3), because they are the major elements in organic wastes and because carbon is related to the estimation of biogas production. Table 2 summarizes the statistics and parameters of waste emissions, organic fraction, and C, N, and P contents, which are obtained from several research efforts and reports (CPBR, 1997;LIEIO, 1998;MAFF, 1999;Tchobanglous et al, 1998;Iriesaki Sludge Center, 2002;Okuno et al, 2003).…”

“…Thermophilic condition is also credited with better performance in disinfection and inhibition of pathogen growth. Although thermophilic digestion has disadvantages such as requiring higher heating energy and being more sensitive to ammonia inhibition (Okuno et al, 2003), Bouallagui et al (2004) concluded that the improved energy balance could allow a smaller digestion tank size and thus less capital cost.…”

“…Sosnowski et al (2003) reported that digesting sewage sludge with food waste improved biogas productivity. The addition of sewage sludge supplied sufficient nutrients such as Fe, Ni, and Co that were lacking in food waste to support microorganism growth (Okuno et al, 2003). Lehtomaki et al (2007) concluded that co-digestion of cow manure and crop residues could increase methane production.…”