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http://dx.doi.org/10.7464/ksct.2014.20.4.367

Reuse of Hydrogen Sulfide by Ferric Chelate Reaction of Food Waste Anaerobic Digestion Gas, Sulfur Recovery and its Economic Evaluation  

Park, Young G. (Department of Chemical Engineering, Daejin University)
Yang, Youngsun (Department of Teacher's Education, Catholic Kwandong University)
Publication Information
Clean Technology / v.20, no.4, 2014 , pp. 367-374 More about this Journal
Abstract
Several experiments have been done to investigate the removal of hydrogen sulfide ($H_2S$) synthetic gas from biogas streams by means of chemical absorption and chemical reaction with 0.1-1 M Fe/EDTA solution. The roles of Fe/EDTA were studied to enhance the removal efficiency of hydrogen sulfide because of oxidizing by chelate. The motivation of this investigation is first to explore the feasibility of enhancing the toxic gas treatment in the biogas facility. The biogas purification strategy affords many advantages. For instance, the process can be performed under mild environmental conditions and at low temperature, and it removes hydrogen sulfide selectively. The end product of separation is elemental sulfur, which is a stable material that can be easily disposed with minor potential for further pollution. As the Fe-EDTA concentration increased, the conversion rate of hydrogen sulfide increased because of the high stability of Fe-EDTA complex. pH as an important environmental factor was 9.0 for the stability of chemical complex in the oxidation of hydrogen sulfide.
Keywords
Hydrogen sulfide; Ferric chelate; Biogas; Surfur recovery; Waste;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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