Waste to Renewable Energy: A Sustainable and Green Approach Towards Production of Biohydrogen by Acidogenic Fermentation

Biohydrogen production from hyperthermophilic anaerobic digestion of fruit and vegetable wastes in seawater: Simplification of the culture medium of Thermotoga maritima

“…The low amount of cellulose and hemicellulose in MFVW (4.5 and 1.9 g L À1 ) and in FVW (7.5, 2.5 g L À1 ) was explained by the waste centrifugation step to eliminate the solid phase and facilitate sampling during the batch fermentations. However, fruit and vegetable wastes are known to be cellulose-poor, are easily biodegradable and release volatile fatty acids (Bouallagui et al, 2005;Mohan, 2010). The concentration of reducing sugars in MFVW and FVW was about 83.5 and 79.5 g L À1 , respectively.…”

“…The highest fermentative H 2 yields have been obtained with (hyper)thermophilic H 2 producers belonging to archaeal and bacterial domains (Guo et al, 2010;Cappelletti et al, 2012;Pradhan et al, 2015). They offer many advantages, such as lower viscosity of media, higher hydrogen production rates, less contamination level by H 2 -consuming microorganisms and enhanced hydrolysis rates of complex substrates (Mohan, 2010;Pradhan et al, 2015). Some members of the order Thermotogales have been considered as ideal organisms for the industrial bioconversion of large quantities of waste materials into fuels.…”

“…Fermentative hydrogen production from FVW is widely recognized as an important strategy to reduce the escalating cost of landfill. Given their high organic content (75%) and ready biodegradability, FVW can be used as carbon and energy sources biofuel production (Bouallagui et al, 2009(Bouallagui et al, , 2005Garcia-Peña et al, 2011;Mohan, 2010).…”

Novel Fermented Marine-Based Products

“…The renewable energy production with high energy yields is a vital new direction on the way of prevention and overcome of negative and potentially irreversible effects of fossil fuels and environmental pollution on the global climate with emissions of greenhouse gases . Anaerobic fermentation from various marine macroalgae such as U. lactuca, P. tenera, U. pinnatifi da and especially L. japonica (the great source of carbon) are widely used for production of hydrogen (Mohan, 2010 ). The standard routes for H 2 production from the algae are based on using fermentation, anaerobic fermentation, enzymatic and microbial electrolysis.…”

Purification of Waste-Generated Biogas Mixtures Using Covalent Organic Framework’s High CO2 Selectivity

“…26,27 The use of biomass/biowaste to produce biogas is a one stone two bird approach, where we can treat the organic waste and simultaneously produce biogas. 24,28,29 But the presence of CO 2 in the biogas mixture lowers its calorific value. Pure CH 4 and H 2 have calorific values of 8500 30 and 2600 kcal/m 3 , 31 respectively, whereas for the biogas mixture it varies from 4800 to 6900 kcal/m 3 .…”