Loading...

Bed mixing and leachate recycling strategies to overcome pressure drop buildup in the biofiltration of hydrogen sulfide

Roshani, B ; Sharif University of Technology | 2012

2354 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.biortech.2012.01.016
  3. Publisher: 2012
  4. Abstract:
  5. The effects of leachate recycling and bed mixing on the removal rate of H 2S from waste gas stream were investigated. The experimental setup consisted of an epoxy-coated three-section biofilter with an ID of 8cm and effective bed height of 120cm. Bed material consisted of municipal solid waste compost and PVC bits with an overall porosity of 54% and dry bulk density of 0.456gcm -3. Leachate recycling had a positive effect of increasing elimination capacity (EC) up to 21gSm -3 bedh -1 at recycling rates of 75mld -1, but in the bed mixing period EC declined to 8g Sm -3bedh -1. Pressure drop had a range of zero to 18mm H 2Om -1 in the course of leachate recycling. Accumulation of sulfur reduced removal efficiency and increased pressure drop up to 110mm H 2Om -1 filter during the bed mixing stage
  6. Keywords:
  7. Biofilter ; Compost ; H 2S ; Sulfur ; Bed height ; Bed materials ; Bulk density ; Elimination capacity ; Experimental setup ; H 2S ; Leachates ; Municipal solid waste compost ; Positive effects ; Recycling rate ; Recycling strategy ; Removal efficiencies ; Removal rate ; Waste gas stream ; Biofilters ; Biofiltration ; Composting ; Desulfurization ; Leaching ; Mixing ; Pressure drop ; Recycling ; Experimental design ; Leachate ; Municipal solid waste ; Pollutant removal ; Porosity ; Absorption ; Bed mixing ; Bioaccumulation ; Chemical composition ; Concentration (parameters) ; Hydrogen sulfide removal ; Leachate recycling ; Material coating ; Priority journal ; Waste gas management ; Biodegradation, Environmental ; Bioreactors ; Filtration ; Hydrogen Sulfide ; Pilot Projects ; Pressure ; Sulfates ; Water Pollutants, Chemical
  8. Source: Bioresource Technology ; Volume 109 , 2012 , Pages 26-30 ; 09608524 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0960852412000223