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Biodegradation of styrene laden waste gas stream using a compost-based biofilter

Dehghanzadeh, R ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1016/j.chemosphere.2004.12.003
  3. Publisher: Elsevier Ltd , 2005
  4. Abstract:
  5. Biological treatment of waste gas styrene vapor was investigated in a three-stage bench-scale biofilter. Yard waste compost mixed with shredded hard plastics in a 25:75 v/v ratio of plastics:compost was inoculated with thickened municipal activated sludge. Microbial acclimation to styrene was achieved by exposing the system to an inlet concentration (CIn) of 0.25 g m -3 styrene and an empty bed retention time (EBRT) of 360 s for 30 days. Under steady-state conditions, maximum elimination capacity (EC) obtained was 45 g m-3 h-1 at a loading rate (L) of 60 g m -3 h-1 (CIn of 2 g m-3 and EBRT of 120 s). Reduction of retention time adversely impacted the performance resulting in the maximum EC of 39 and 27 g m-3 h-1 for EBRT of 60 and 30 s, respectively. Evaluation of the concentration profile along the bed height indicated dominance of first-order kinetics at CIn ≤ 0.45 g m-3 and zero-order for higher concentrations. © 2005 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Biodegradation ; Biofilters ; Composting ; Concentration (process) ; Reaction kinetics ; Styrene ; Vapors ; Waste treatment ; Empty bed retention time (EBRT) ; Municipal activated sludge ; Waset gas styrene vapor ; Activated sludge process ; Plastic ; Styrene ; Biofiltration ; Volatile organic compound ; Acclimatization ; Biofilter ; Composting ; Concentration response ; Degradation kinetics ; Inoculation ; Microbial degradation ; Vapor ; Waste management ; Biodegradation ; Biological Treatment ; Compost ; Concentration ; Styrene ; Vapors
  8. Source: Chemosphere ; Volume 60, Issue 3 , 2005 , Pages 434-439 ; 00456535 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0045653504012093