Biogas production of ozone and/or microwave-pretreated canned maize production sludge

Beszédes, Sándor and Kertész, Szabolcs and László, Zsuzsanna and Keszthelyi-Szabó, Gábor and Hodúr, Cecilia (2009) Biogas production of ozone and/or microwave-pretreated canned maize production sludge. OZONE SCIENCE & ENGINEERING, 31 (3). pp. 257-261. ISSN 0191-9512

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Abstract

The production of canned maize is accompanied by formation of large volumes of waste water, with high contents of starch, and high chemical- and biochemical oxygen demand. In our work the effects of acidic, micro- wave and ozone pretreatment on the biogas production and aerobic biodegradability of canned maize production sludge were examined and the energy balance of the processes were determined when different sludge pretreatments were used. It was found that ozone treatment decreased the chemical oxygen demand, while the biochemical oxygen demand and the aerobic biodegradability increased. The combination of microwave and ozone treatment increased the biodegrad- ability relative to ozone treatment alone.

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