Dry thermophilic anaerobic digestion of the organic fraction of municipal solid wastes: Solid retention time optimization

Combined anaerobic/aerobic treatment of OFMSW: Performance evaluation using mass balances

“…Retention time is one of the most important process parameters, as it affects anaerobic digestion efficiency in terms of organic matter removal and specific gas production as well [26]. Although the conversion rate of organic matter into biogas is highly dependent on several parameters, including feedstock composition [27], reactor temperature [28] and configuration [29], García-Heras [30] highlighted that a specific biogas production ranging between 60% and 80% of the theoretical one can be achieved within 10 days.…”

Proper Insulated Materials for Temperature Accumulation in Box Technology to Catalyze the Organic Digestion Processing on Community Garbage Disposal

“…8, No. 5; become the mature organic compost (Figures 4 and 5) through the bacterial organic digestion process (LERD 1999(LERD , 2000(LERD , 2011(LERD , 2012Shahriari et al, 2013;Appels et al, 2010;Steger et al, 2007;Fernandez-Rodriguez et al, 2014;Zupancic & Ros, 2003;Metcalf & Eddy, 1972: Ariunbaatar et al, 2014JICA, 1982;Atchley & Clark, 1979;Ugwuanyi et al, 2005;Juteau, 2006). Figure 5.…”

“…In addition, both the recycled and hazardous wastes have been paid more attention on how to get rid of them in terms of promoting the extension programs and declared obligations. In part of organic matter point of view, the landfill technique is applicably used for all over the word instead of using for energy (Geng et al, 2010;Chang & Chang, 1998;Fernandez-Rodriguez et al, 2014). As stated before, developing countries are still in using landfill technique for community garbage disposal, but land constraint is still existed in populated cities and communities (JICA, 1981(JICA, , 1982(JICA, , 1991Bhuiyan, 2010).…”

“…Actually, RCB technology could release temperature above 70 o C as found during the bacterial organic digestion processing in which the carbohydrates, proteins, celluloses, hemicellulose and fiber were become to inorganic materials (LERD, 1999(LERD, , 2000(LERD, , 2011(LERD, , 2012Metcalf & Eddy, 1972;Nopparatanaporn, 1992;Steger et al, 2007;Ugwuanyi et al, 2005;Wilson, 1977). Naturally, either aerobic process or anaerobic process, the heat has exactly to liberated during the bacterial organic digestion processes in landfills, garbage piles, and litter bins as stated by Keenen et al (1984), Botkin & Keller (2010), Atchley & Clark (1979), Ugwuanyi et al (2005), Tchobanoglous et al (1993), Wilson (1977), Steger et al (2007), Metcalf & Eddy (1972), Nopparatanaporn (1992), Fernandez-Rodriguez et al (2014), Geng et al (2010), and Appels et al (2010). The liberated heat quantity and producing time are relied on the content and proportion of carbohydrates, proteins, celluloses, hemicelluloses, and fibers in their composition of community solid wastes (Ariunbaatar et al, 2014;Finnveden et al, 1995;Chang & Chang, 1998;Koroneos & Nanaki, 2012;Swati & Joseph, 2008;Chunkao, 1998).…”

“…In parallel conditions, the liberated heat plays a significant role in activating on both the aerobes and anaerobes for specific functions to their processes in organic digestion for converting the fresh dead plants and animals to become the inorganic materials as nutrient sort for plat growth (Prabuddham, 1985;Botkin & Keller, 2010;Atchley & Clark, 1979). However, elongation of liberated heat is very necessary to complete the maturing organic compost through the natural processes of bacterial organic digestion (Ariunbaatar et al, 2014;Appels et al, 2010;Swati & Joseph, 2008;Atchley & Clark, 1979;Ugwuanyi et al, 2005;Steger et al, 2007;Fernandez-Rodriguez et al, 2014), in other words, the prolongation of heat liberation during bacterial organic digestion processes from the beginning to the end is expected to keep in-box temperature equivalent to ambient air up to more 70 o C which provides the conditions for completely fermentation of all kinds of organic wastes.…”