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Alkaline pretreatment of wheat plant (WP), including its grains and straw, was investigated under different conditions in order to enhance biomethane production at mesophilic temperature. Alkaline pretreatment was performed using 8% (w/v) NaOH solution at different temperatures (0, 25, 50, 75 and 100°C). The best improvement in the yield of methane production was achieved by pretreatment at 75°C for...
Effects of FeCl 3 on anaerobic digestion of cyanobacterial biomass from Lake Chao, one of the most serious eutrophic freshwater lakes in China, were investigated. Results showed that FeCl 3 was one feasible additive for the anaerobic process and methane generation rate and yield were both enhanced. The maximum methane yield reached 234mLg −1 based on the degraded volatile solid...
This study investigates the effect of high pressure thermal hydrolysis on organic matter solubilisation and biogas production from Chlorella vulgaris biomass. Microalgae biomass was subjected to three temperatures, namely 140, 160, and 180°C and two heating times (10 and 20min). Results showed that carbohydrates release prevailed over proteins. Carbohydrates were solubilised concomitantly with increasing...
Electrochemical pretreatment (EP) with a pair of Ti/RuO 2 mesh plate electrodes was applied to solubilize waste activated sludge (WAS) with the aid of hypochlorite, and the conventional pretreatment methods of thermal pretreatment (THP), thermal-alkaline pretreatment (TAP) and alkaline pretreatment (AP) were also introduced as the comparative cases. In this study, Growth Rate of Solubilization...
In Denmark 50% of animal manure must be used for biogas production by 2020. Danish manure is generally managed as slurry with a dry matter content of 1–10%, and this process limits its volumetric biogas yield due to diluted feedstock. This leads to a demand for co-substrates in order to concentrate feedstock to make biogas production financially viable, since only digesting animal manure is not economically...
The aim of the paper is highly relevant in different countries dealing with some experimental results obtained in a membrane pilot plant designed to upgrade biomethane to such a quality level that it is worth injecting into the methane grid where it is widespread over many territories especially in Italy.The process chosen is able to upgrade biomethane for different inlet conditions assessing the...
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