Fermentative Biohydrogen Production from Solid Wastes

Effects of pre-treatment technologies on dark fermentative biohydrogen production: A review

“…Although several reviews do consider the topic of pre-treatment (Karthic and Shiny, 2012a;Venkata Mohan, 2008;Li and Fang, 2007;Mudhoo et al, 2011;Ntaikou et al, 2010;Karthic and Shiny, 2012b;ValdezVazquez and Poggi-Varaldo, 2009;Yasin et al, 2013;Saady, 2013;De Gioannis et al, 2013;Chen et al, 2013;Kim et al, 2013;Venkata Mohan and Goud, 2012;Wong et al, 2014a;Ruggeri et al, 2015), none of these studies has focussed extensively on both inoculum and substrates pre-treatment. In addition, besides the review by Saady (2013), most of the studies on inoculum pretreatment have investigated only suppression of hydrogenotrophic methanogenesis while neglecting the effects of pretreatment on other bacteria like homoacetogens, propionate producers, LAB and SRB which can negatively affect the biohydrogen production.…”

Biological hydrogen production using co-culture versus mono-culture system

“…[17] The massive organic wastes discharged from municipal, agricultural and industrial sources cause serious environmental contamination, such as odour emanation, toxic gas emission, groundwater contamination at collection and landfill source. [17,18] The sustainable waste management strategies are in progress for the conversion of organic wastes into energy. Most of the organic solid wastes are readily available and contain varied compositions of carbon and nitrogen source necessary for microbial hydrogen production.…”

“…Most of the organic solid wastes are readily available and contain varied compositions of carbon and nitrogen source necessary for microbial hydrogen production. [17,19] The major criteria in hydrogen production for the selection of the organic waste materials are the resource availability, cost, carbohydrate to nitrogen ratio, pretreatment requirement and rate of biodegradability. [18] The hydrogen production potential has been investigated using various organic wastes and these are summarized below.…”

“…[17] Cellulosic waste is the abundant biopolymer obtained from the discarded forestry, wood residues, paper wastes, and agriculture wastes. [17] Lignocellulosic materials contain cellulose (32-47%), hemicelluloses (19-27%) and lignin (5-24%) with the largest renewable sources of hexose and pentose sugars.…”

“…[17] Cellulosic waste is the abundant biopolymer obtained from the discarded forestry, wood residues, paper wastes, and agriculture wastes. [17] Lignocellulosic materials contain cellulose (32-47%), hemicelluloses (19-27%) and lignin (5-24%) with the largest renewable sources of hexose and pentose sugars. [17,20] A potential hydrogen production process either needs cellulolytic degrading microorganism or an additional pretreatment step to degrade cellulose into simple fermentable sugar.…”