Abstract
Diseased swines can be utilized as substrate for anaerobic fermentation after proper pretreatment. The cumulative bio-hydrogen and bio-methane production yields were taken as targets, the effects of different initial pH values and enzyme concentration on bio-hydrogen and bio-methane production characteristics by anaerobic fermentation from diseased swines were investigated. Results showed that the highest cumulative hydrogen yield reached up to 175.84 mL/L when pH value and enzyme concentration are of 8.0 and 2.5% respectively. While the maximum cumulative bio-methane-production yield of 104.59 mL/L was obtained when the enzyme concentration and pH value are of 1.0% and 8.0 respectively. The effects of enzyme on cumulative bio-hydrogen yield was greater than that of the initial pH while it is opposite for cumulative bio-methane yield. The potential of bio-hydrogen production from diseased swines is higher than that of bio-methane production.
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