Abstract: Biofilters treat contaminated air by passing it through a damp porous medium that supports a vigorous culture of microorganisms. Contaminants dissolve in the water and are degraded by the microorganisms. Successful operation ...

Abstract: A mathematical model was developed that describes basic transport and biological processes for a biofilter. The model described transfer between the air and solids/water phases, biological degradation of the substrate, CO

Abstract: The determination of transfer rate constants (

Abstract: The performance of a field-scale biotrickling filter was investigated for the treatment of styrene vapors released from a bathtub manufacturing process. The two-stage biotrickling filter was operated in series with an ...

Abstract: The sulfuric acid that causes corrosion of sewer crowns is generated by a complex microbial ecosystem. Several species capable of oxidizing sulfur compounds colonize exposed concrete. A microbial succession occurs that is ...

Abstract: ASCE is preparing a guidance manual for the design of remedial actions at sites contaminated with hazardous wastes. This article is a brief summary of the processes described in the manual. Site characterization is a review ...