title: Efficacy of wood charcoal and its modified form as packing media for biofiltration of isoprene.
abstract: The efficacy of wood charcoal (WC) and nutrient-enriched wood charcoal (NWC) as biofilter packing media were assessed for isoprene biodegradation in a bioreactor comprising bioscrubber and a biofilter connected in series and inoculated with Pseudomonas sp. The bioreactors using WC and NWC exhibited >90% removal efficiency and around 369 g m-3h-1elimination capacity at around 404 g m-3h-1inlet loading rate. In both the bioreactors, the biofilter component showed better degradation capacity compared to the bioscrubber unit. The kinetic parameters, maximum elimination capacity, ECmax; substrate constant, Ksand ECmax/Ksfor Michaelis-Menten model were evaluated. The lower Ksfor the WC packed bioreactor indicated that ECmaxachieved, was faster compared to others, while higher ECmaxand ECmax/Ksfor the NWC packed bioreactor suggests its superiority in isoprene abatement in the continuous mode. A comparison of the available published information on biofiltration of isoprene reflected polyurethane foam as the superior packing media.
authors.affiliation: Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
authors.forename: Navnita
authors.initials: N
authors.lastname: Srivastva
authors.affiliation: Department of Chemical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005, India.
authors.forename: Ram S
authors.initials: RS
authors.lastname: Singh
authors.affiliation: Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India. Electronic address: skdubey@bhu.ac.in.
authors.forename: Suresh K
authors.initials: SK
authors.lastname: Dubey
mesh_terms: D001673:Biodegradation, Environmental; D019149:Bioreactors; D002070:Butadienes; D002606:Charcoal; D005374:Filtration; D045782:Hemiterpenes; D010420:Pentanes; D014934:Wood
chemical_list: D002070:Butadienes; D045782:Hemiterpenes; D010420:Pentanes; C005059:isoprene; D002606:Charcoal
keywords: Biofilter; Bioscrubber; Isoprene; Packing media; Wood charcoal