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Title: Simultaneous removal of NO<sub>X</sub> and SO<sub>2</sub> in exhausted gas through landfill leachate
Authors: Han, Yaqiong
Zhang, Weijiang
Keywords: Anaerobic denitrifying bacteria
Combined removal of NOx/SO<sub>2</sub>
Landfill leachate
Sulfate reducing bacteria
Issue Date: Dec-2010
Publisher: NISCAIR-CSIR, India
Abstract: Simultaneous removal of NOx and SO<sub>2</sub> from exhausted gas were investigated by studying co-culture of sulfate reducing bacteria and anaerobic denitrifying bacteria, separated from landfill leachate. When H<sub>2</sub>S, generated by sulfate reducing bacteria was chosen as the sole electron donor for anaerobic denitrifying bacteria, the co-culture system demonstrated a faster NO removal rate, higher stability and better permanence. When the feed gas flow rates of N<sub>2</sub> and SO<sub>2</sub> were maintained constant at 0.1 m<sup>3</sup>/h and 16 ml/min respectively, the maximum NO-removal rate could be achieved at over 92% with NO feed gas kept between 2-6 ml/min, while the SO<sub>2</sub> removal rate was always above 95%. Long-term continuous removal of NO exhibited an evident periodicity of five days, however, the fluctuation range of NO-removal was decreasing. Moreover, the decrease of the gas flow rate and the increase in NO inlet concentration could contribute to a higher NO-removal rate
Description: 1237-1242
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Appears in Collections:IJEB Vol.48(12) [December 2010]

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