1. Ottengraf, S.P.P. Exhaust Gas Purification. InBiotechnology;Rehn, H.J.; Reed, G., Eds; VCH Verlagsgesellschaft: Weinham, Germany, 1986; Vol. 8.
2. Togna, A.P.; Singh, M. A Comparative Study of Biofilter and Biotrickling Filter Performance for Isopentane Removal. InProceedings of the 87th Annual Meeting of the Air & Waste Management Association,Cincinnati, OH, 1994; Paper No. 94-RP115B.04.
3. Smith, F.L.; Sorial, G.A.; Suidan, M.T.; Biswas, P.; Brenner, R.C. “Development of two biomass control strategies for extended, stable operation of high efficiency biofilters with high toluene loadings,”Environ. Sci. & Technol.1996, 30, 1744–1751.
4. American Public Health Assoc., American Water Works Assoc., Water Environment Federation.Standard Methods for the Examination of Water and Wastewater,19th ed., Washington, DC, 1995.
5. Gaudy, Jr. A.F.; Gaudy, E.T.Microbiology for Environmental Scientists andEngineers;McGraw-Hill, Inc.: New York, 1980, p 59.