Biofiltration control of VOC and air toxic emissions: n-Butane and benzene
- Univ. of Florida, Gainesville, FL (United States)
n-Butane and benzene vapors are routinely observed in urban atmospheres. Their presence in urban airsheds is of concern because of their ozone production potential as volatile organic compounds (VOCs) and/or potential toxicity. Also, these saturated hydrocarbons are representative of airborne aliphatic and aromatic compounds. Separate laboratory studies have been conducted on the biological elimination of n-butane (n-C{sub 4}H{sub 10}) and benzene (C{sub 6}H{sub 6}) from airstreams using treated compost biofilters. The removal efficiencies were found to exceed 90% for a conditioned biofilter medium and pollutant low concentrations (< 25 ppm) and zeroth order kinetics at higher concentrations (> 100 ppm), whereas benzene vapor elimination followed zeroth order kinetics at concentrations up to 200 ppm. The maximum n-butane and benzene elimination capacities observed for the compost biofilters and conditions employed were 25 and 70 g pollutant m{sup -3} h{sup -1}, respectively. 13 refs., 6 figs., 2 tabs.
- OSTI ID:
- 621367
- Report Number(s):
- CONF-960273--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Biofiltration of benzene contaminated air streams using compost-activated carbon filter media
Analytical model of dual-media biofilter for removal of organic air pollutants