Abstract

Unextracted lignocellulose from corn stalks was investigated for its anaerobic biodegradability at 38 ^oC using mixed micro organisms harnessed directly from the air. The effects of particle diameter and certain nutrients on biodegradability were investigated. The highest biogas yield was observed for ? 1.0 mm particle diameter size, followed by ? 2.0 mm particle diameter and then ? 3.0 mm particle diameter. Potato dextrose agar (PDA) and urea were found to increase biogas yield when in low concentrations. The combination of PDA and urea in low concentrations is a better nutrient than either PDA or urea alone.

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