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Effect of Temperature-increase Rate and Terminal Temperature on the Solubilization of Sewage Sludge using Microwave Irradiation
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  • Journal title : Environmental Engineering Research
  • Volume 14, Issue 1,  2009, pp.48-52
  • Publisher : Korean Society of Environmental Engineering
  • DOI : 10.4491/eer.2009.14.1.048
 Title & Authors
Effect of Temperature-increase Rate and Terminal Temperature on the Solubilization of Sewage Sludge using Microwave Irradiation
Park, Woon-Ji; Ahn, Johng-Hwa; Lee, Chan-Ki;
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Solubilization of sewage sludge creates favorable conditions for anaerobic microorganisms to produce biogas. In this paper, we quantify the effect of heating pretreatment on the degree of solubilization of sewage sludge. The pretreatment process was carried out using a lab-scale industrial microwave unit (2450 MHz frequency). Response surface analysis was applied to determine the combination of temperature-increase rate (ramp rate) (2.9 to 17.1 /min) and terminal temperature (52 to 108). Both ramp rate and temperature significantly affected the solubilization degree of sludge. Within the design boundaries, the conditions predicted to maximize the solubilization degree of 15.8% were determined to be 2.9 /min and 104.
Anaerobic digestion;Central composite design;Optimization;Pretreatment;Response surface analysis;
 Cited by
Impact of Irradiation Time on the Hydrolysis of Waste Activated Sludge by the Dielectric Heating of Microwave,;;;;;

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