Biodegradation

Aronson D., Boethling R., Howard P., Stiteler W. 2005. Estimating biodegradation half-lives for use in multimedia fate models.  Chemosphere. Submitted March 2005. 

Howard P., Meylan W., Aronson D., Stiteler W., Tunkel J., Comber M., and Parkerton T.F. 2005. A new biodegradation prediction model specific to petroleum hydrocarbons. Environ Toxicol Chem. Accepted for publication February 2005. 

Jaworska J.S., Boethling R.S., Howard P.H. 2003. Recent Developments in Broadly Applicable Structure-biodegradability Relationships. Environ Toxicol Chem 22:1710-1723. 

Tunkel J., Howard P.H., Boethling R.S., Stiteler W., Loonen H. 2000. Predicting Ready Biodegradability in the Japanese Ministry of International Trade and Industry Test. Environ Toxicol Chem 19:2478-2485.

Howard P.H. 2000. Biodegradation. In: Handbook of Property Estimation Methods for Chemicals: Environmental and Health Sciences. Boethling R.S and Mackay D., eds. Lewis Publishers, Boca Raton, FL, pp. 281-310.

Aronson D., Citra M., Shuler K., Printup H., and  Howard P.H. 1998. Aerobic Biodegradation of Organic Chemicals in Environmental Media: A Summary of Field and Laboratory Studies. Prepared for U.S. EPA, Athens, GA. (pdf file)

Boethling R.S., Howard P.H., Stiteler W., Hueber A. 1997. Does the Semi-continuous Activated Sludge (SCAS) Test Predict Removal in Secondary Treatment. Chemosphere 35:2119-2130.

Aronson D. and  Howard P.H. 1997. Anaerobic Biodegradation of Organic Chemicals in Groundwater: A Summary of Field and Laboratory Studies. Prepared for the American Petroleum Institute, SRC TR-97-0223F.
(pdf file)

Knaebel D.B. 1997. Measuring Soil Phase Biodegradation Kinetics. In: Biodegradation Kinetics: Generation and use of data for regulatory decision-making. S.G. Hales, T. Feijel, H. King, K. Fox and W. Verstraete, eds. SETAC-Europe Press, Brussels, Belgium, pp. 139-153.

Knaebel D.B., Federle T.W., McAvoy D., and Vestal J.R.. 1996. Microbial Mineralization of Organic Compounds in an Acidic Agricultural Soil: Effects of Preadsorption to Various Soil Constituents. Env. Toxicol. Chem. 15:1865-1875.

Knaebel D.B., Federle T.W., McAvoy D., and Vestal J.R.. 1996. Mineralization of linear alkylbenzene sulfonate (LAS) and linear alcohol ethoxylate (LAE) in 11 contrasting soils. Env. Toxicol. Chem. 9:981-988.

Boethling R.S., Howard P.H., Beauman J. A. and Larosche M.E. 1995. Factors for intermedia extrapolation in biodegradation assessment. Chemosphere 30:741-752.

Boethling R.S., Howard P.H., Meylan W., Stiteler W., Beaumann J. and  Tirado N. 1994. Group contribution method for predicting probability and rate of aerobic biodegradation. Environ. Sci. Technol. 28:459-465.

Knaebel D.B., Federle T.W., McAvoy D., and Vestal J.R. 1994. The effects of mineral and organic soil constituents on the microbial mineralization of organic compounds in a natural soil. Appl. Environ. Microbiol. 60:4500-4508.

Howard P.H. 1993. Progress report: Determining 'Real world' biodegradation rates. Environ. Toxicol. Chem. 12:1135-1137.

Howard P.H., Boethling R.S., Stiteler W.M., Meylan W.M., Hueber A.E.,  Beauman J.A., and  Larosche M.E. 1992. Predictive model for aerobic biodegradability developed from a file of evaluated biodegradation data. Environ. Toxicol. Chem. 11:593-603.

Howard P.H., Hueber A.E. and Boethling R.S. 1987. Biodegradation data evaluation for structure/biodegradability relations. Environ. Toxicicol. Chem. 6:1-10.

Howard P.H., Hueber A.E., Mulesky B.C., Crisman J.S., Meylan W.,  Crosbie E., Gray D.A., Sage G.W., Howard K.P., LaMacchia A., Boethling R. and Troast R. 1986. BIOLOG, BIODEG and FATE/EXPOS: New files on microbial degradation and toxicity as well as environmental fate/exposure of chemicals. Environ. Toxicol. Chem. 5:977-988.

Howard P.H. 1985. Determining 'Real World' biodegradation rates. Environ. Toxic Chem. 4:129-130.

O’Grady D.P., Howard P.H. and Werner A.F. 1985. Activated sludge biodegradation of 12 commercial phthalate esters. Appl. Environ. Microbiol. 49:443-445.

Banerjee S., Howard P.H., Dombrowski A.E., Sikka H. and Tullis D.L. 1984. Development of a general kinetic model for biodegradation and its application to chlorophenols and related compounds. Environ. Sci. Technol. 18:416-422.

Howard P.H. and Banerjee S. 1984. Interpreting results from biodegradability tests of chemicals in water and soil. Environ. Toxicol. Chem. 3:551-562.

Sugatt R.H., O’Grady D.P., Banerjee S., Howard P.H. and Gledhill W.E.. 1984. Shake flask biodegradation of 14 commercial phthalate esters. Appl. Environ. Microbiol. 47:601-606.