New parameters to determine the optimum pretreatment for improving the biomethanization performance

Thermochemical Pretreatments of Organic Fraction of Municipal Solid Waste from a Mechanical-Biological Treatment Plant

“…However, the literature about the applications of pretreatments on organic wastes processed in full-scale plants and with high particle size, as the OFMSW coming from a full-scale mechanical-biological treatment (MBT) plant used in this study, is very limited. In fact, few references have been found about this topic [ 1 , 14 , 15 , 16 ] in which the best organic matter solubilisation was achieved by means of thermochemical pretreatments at 180 °C, 5 bar and 3 g NaOH/L as alkaline agent.…”

“…In the above mentioned papers [ 1 , 14 , 15 , 16 ], the range of the operational conditions tested must be considered as preliminary since there was not specific literature about the applications of pretreatments on OMFSW coming from a full-scale MBT plant. Therefore and based on the previous information, the main goals of this paper are three: To determine with more accuracy, (while reducing the operational variables ranges), the best conditions for improving the organic matter solubilisation according to preliminary results obtained by Fdez-Güelfo et al [ 1 ] in order to provide further detailed information that will complement the conclusions obtained by these authors.…”

“… To study the effect of the operation time on the SY. In the literature, most thermochemical pretreatments are only developed at 30 min of operation time, with optimum value generally for pretreatments of sludge from WWTP [ 1 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. To contrast the SY estimated in terms of classical parameters of organic matter (DOC, sCOD and TVFA) with a new indirect parameter defined by Fdez-Güelfo et al [ 25 ], the “ acidogenic substrate as carbon (ASC) ”, in order to evaluate the possible effect of the pretreatments on the H 2 production during the acidogenic phase of a sequential anaerobic process.…”

“…To study the effect of the operation time on the SY. In the literature, most thermochemical pretreatments are only developed at 30 min of operation time, with optimum value generally for pretreatments of sludge from WWTP [ 1 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Organic Fraction of Municipal Solid Waste: Overview of Treatment Methodologies to Enhance Anaerobic Biodegradability

“…While comparing the use of manure compost, biological treatment (using fungus Aspergillus awamori) showed better hydrolysis results (Fdéz-Güelfo et al, 2011b). Several other studies concluded the superiority of employing biological treatment compared to thermochemicaltreated substrates for increased AD rate (Fdéz-Güelfo et al, 2011b;Fdez-Güelfo et al, 2012). Charles et al (2009) studied the impacts of pre-air circulation to OFMSW and its effect on AD and concluded that aerobic treatment constrained the amount of methane generated as opposed to fortifying the process.…”