title: Performance evaluation and model analysis of BTEX contaminated air in corn-cob biofilter system.
abstract: Biofiltration of BTEX with corn-cob packing material have been performed for a period of 68 days in five distinct phases. The overall performance of a biofilter has been evaluated in terms of its elimination capacity by using 3-D mesh techniques. Maximum removal efficiency was found more than 99.85% of all four compounds at an EBRT of 3.06 min in phase I for an inlet BTEX concentration of 0.0970, 0.0978, 0.0971 and 0.0968 g m(-3), respectively. Nearly 100% removal achieved at average BTEX loadings of 20.257 g m(-3) h(-1) to biofilter. A maximum elimination capacity (EC) of 20.239 g m(-3) h(-1) of the biofilter was obtained at inlet BTEX load of 20.391 g m(-3) h(-1). Moreover, using convection-diffusion reaction (CDR) model for biofilter depth shows good agreement with the experimental values for benzene, toluene and ethyl benzene, but for o-xylene the model results deviated from the experimental.
authors: Chemical Engineering Department, Indian Institute of Technology, Roorkee, India. rahul_iitr2004@yahoo.co.in
authors: Rahul
authors: Anil Kumar
authors: AK
authors: Mathur
authors: Chandrajit
authors: C
authors: Balomajumder
mesh_terms: D000393:Air Pollutants / Q000302:isolation & purification*; D001554:Benzene / Q000302:isolation & purification*; D001555:Benzene Derivatives / Q000302:isolation & purification*; D001673:Biodegradation, Environmental; D002245:Carbon Dioxide / Q000737:chemistry; D005374:Filtration / Q000295:instrumentation* / Q000592:standards; D007700:Kinetics; D008962:Models, Theoretical; D013696:Temperature; D013997:Time Factors; D014050:Toluene / Q000302:isolation & purification*; D014992:Xylenes / Q000302:isolation & purification*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D000393:Air Pollutants; D001555:Benzene Derivatives; D014992:Xylenes; D002245:Carbon Dioxide; D014050:Toluene; D001554:Benzene; C004912:ethylbenzene; C026114:2-xylene