Waste paper and macroalgae co-digestion effect on methane production

Abstract

The present study investigates the effect on methane production from waste paper when co-digested with macroalgal biomass. Both feedstocks were previously mechanically pretreated to reduce their particle size. The study was planned according two factors: the feedstock to inoculum (F/I) ratio and the waste paper to macroalgae (WP/MA) ratio. The F/I ratios checked were 0.2, 0.3 and 0.4 and the WP/MA ratios were 0:100, 25:75, 50:50, 75:25 and 100:0. The highest methane yield (386 L kg-1 VS added) was achieved at an F/I ratio of 0.2 and a WP/MA ratio of 50:50. A biodegradability index of 0.87 obtained in this study indicates complete conversion of feedstock at an optimum C/N ratio of 26. Synergistic effect was found for WP/MA 25:75, 50:50 and 75:25 mixing ratios compared with the substrates mono-digestion.

The effect of ISR on OFMSW during acidogenic fermentation for the production of AD precursor: kinetics and synergies

“…"Theoretical Yield" was calculated as the sum of soluble products, each substrate multiplied by its percentage in the mixture of biodegradable portion of VS. "Theoretical Yield" can be calculated as eqn (9). 51 Theoretical yield ¼ yield Paper  paper %BD + yield Food  food % BD (9) where, yield Paper and yield Food are the experimental sCOD and VFA yields of mono-fermentation of PW and FW respectively. Paper %BD and food %BD are referred to the mixing ratio from fermentation mixture.…”

Selection Guidelines for Wind Energy Technologies

“…A remedy to salvage the situation is to consider an energy generation medium that is environmentally friendly, abundant, and feasible [7,8]. Improving the efficiency of the current energy conversion devices [9][10][11][12], producing efficient and environmentally friendly energy systems [13][14][15][16], or employing renewable energy resources, such as solar energy, geothermal energy [17,18], wind energy [19,20], biomass energy [21,22], and marine energy [23,24], are different strategies taken to minimize or alleviate the environmental impacts of fossil fuel.…”

Conversion of biogas from anaerobic digestion to single cell protein and bio-methanol: mechanism, microorganisms and key factors - A review

“…A wide range of waste types can be used as feedstock for biogas production. For instance, sludge from water resource recovery facilities (WRRFs) [3], agricultural residues [4][5][6][7], paper waste [8,9], food waste [10], and livestock manure [11,12]. The yield and composition of biogas from AD depend largely upon the type of feedstock and operating conditions [13,14].…”