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IJEB Vol.48(12) [December 2010] >


Title: Simultaneous removal of NOX and SO2 in exhausted gas through landfill leachate
Authors: Han, Yaqiong
Zhang, Weijiang
Keywords: Anaerobic denitrifying bacteria
Co-culture
Combined removal of NOx/SO2
Landfill leachate
Sulfate reducing bacteria
Issue Date: Dec-2010
Publisher: NISCAIR-CSIR, India
Abstract: Simultaneous removal of NOx and SO2 from exhausted gas were investigated by studying co-culture of sulfate reducing bacteria and anaerobic denitrifying bacteria, separated from landfill leachate. When H2S, 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 N2 and SO2 were maintained constant at 0.1 m3/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 SO2 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
Page(s): 1237-1242
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Source:IJEB Vol.48(12) [December 2010]

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