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Factors important for anaerobic digestion
A temperature of 35-37°C and pH 6-8 is optimal. Extremes of pH, influx of heavy metals, solvents, other toxic materials can easily upset the operation of the anaerobic digestion when it becomes' stick/som' where methane production is interrupt d and fatty acid and other fermentation products accumulate. Reactor must be cleaned and charged with large volumes of anaerobic sludge or appropriate methanogenic bacteria from an operational unit.