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http://dx.doi.org/10.9719/EEG.2017.50.3.251

Use of Light Emitting Diode for Enhanced Activity of Sulfate Reducing Bacteria in Mine Drainage Treatment Process Under Extreme Cold  

Choi, Yoojin (Department of Chemical and Biomolecular Engineering (BK21 Plus Program), Korea Advanced Institute of Science and Technology (KAIST))
Choi, Yeon Woo (School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST))
Lee, An-na (Department of Test Planning Team, Korea Consumer Agency)
Kim, Kyoung-Woong (School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST))
Publication Information
Economic and Environmental Geology / v.50, no.3, 2017 , pp. 251-256 More about this Journal
Abstract
This study presents measures to enhance the efficiency of Successive Alkalinity Producing Systems(SAPS), a natural biological purification method that prevents environmental pollution arising from the release of Acid Mine Drainage(AMD) from abandoned mines into rivers and groundwater. The treatment of AMD using SAPS is based on biological processing technology that mostly involves sulfate reducing bacteria(SRB). It has been proven effective in real-world applications, and has been employed in various projects on the purification of AMD. However, seasonal decrease in temperature leads to a deterioration in the efficiency of the process because sulfate-reducing activity is almost non-existent during cold winters and early spring even if SRB is able to survive. Against this backdrop, this study presents measures to enhance the activity of the SRB of the organic layer by integrating light emitting diode(LED)s in SAPS and to maintain the active temperature using LEDs in cold winters. Given that mine drainage facilities are located in areas where power cannot be easily supplied, solar cell modules are proposed as the main power source for LEDs. By conducting further research based on the present study, it will be possible to enhance the efficiency of AMD treatment under extreme cold weather using solar energy and LEDs, which will serve as an environmentally-friendly solution in line with the era of green growth.
Keywords
acid mine drainage; successive alkalinity producing system; sulfate reducing bacteria; light emitting diode; solar cell;
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Times Cited By KSCI : 5  (Citation Analysis)
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