Compact physical-chemical and biological treatment systems for hazardous waste and
industrial wastewaters, fate of pollutants in engineered and natural systems, and site remediation
|IMPACT OF PETROLEUM-BASED
HYDROCARBONS ON PE/PVC PIPES AND PIPE GASKETS
Objectives: Conduct survey water utilities to determine
their experiences with exposure of plastic pipes to gasoline,
chlorinated solvents and other hydrocarbons; testing of the
performance of plastic pipes and elastomeric gaskets under realistic
levels of hydrocarbon contamination, and development of accelerated
life cycle tests that will predict the performance of plastic pipes
and elastomeric gaskets under commonly encountered levels of
Gaunt, J., F. Mao, S.K. Ong, 2006, Performance of plastic pipes and
pipe gaskets in hydrocarbon contamination field experience and
laboratory studies, AWWA ACE Conference, June 11 14, San Antonio,
Mao, F., J. Gaunt, and S.K. Ong, 2006, Permeation of petroleum-based
aromatic compounds through polyethylene pipes under simulated field
conditions, AWWA ACE Conference, June 11 14, San Antonio, TX.
Gaunt, J.A., S.K. Ong, 2005, Water utility
experience with plastic pipes and gaskets in
hydrocarbon-contaminated soils, ACE05, June, San Francisco, CA.
|FATE AND DEGRADATION OF ANTIBIOTICS
the world economy along with an increase in world population has
spurred mass production of livestock to meet the food needs of both
domestic and international markets. Integral in the practice of
mass production of livestock is the use of veterinary
pharmaceuticals (VPs) or antimicrobial drugs for control of diseases
and for growth promotion. Detection of low concentrations of VPs
and human drugs in effluent of manure lagoons and municipal
wastewater treatment plants, respectively, have raised major
concerns of potential effects of these compounds on humans and
aquatic life. The objective of this study is to investigate the
fate and biodegradation of common VPs used in the animal livestock
Khanal, S. K., B. Xie, Thompson, M., S. Sung, S.K.
Ong, J. van Leeuwen, 2006, Fate, transport and biodegradation of
natural estrogens in the environment and engineered systems,
Environmental Science and Technology, 40(21):6537 6546.
Kolz, A.C., S.K. Ong, and T. B. Moorman, 2005,
Sorption of Tylosin onto Swine Manure, Chemosphere,
Kolz, A.C., T.B. Moorman, S.K.
Ong, K.D. Scoggin, E.A. Douglas, 2005, Degradation and metabolite
production of tylosin in anaerobic and aerobic swine manure
slurries, Water Environment Research, 77(1): 49 - 56.
|Bioremediation and bioavailability of PAHs
for PAH-contaminated soils
Research Objective: development of cost effective methods
to remediate coal-tar sites using bioremediation. Technologies
tested include land farming and solvent enhanced biodegradation.
Lee, P.H., S.K. Ong, J. Golchin, and G.L. Nelson.
2001. Use of solvents to enhance PAH biodegradation of
coal-tar-contaminated soils, Water Research,
Lee, P.H., S.K. Ong, J. Golchin, G.L. Nelson.
1999. Extraction method for analysis of PAHs in coal
tar-contaminated soil, ASCE Hazardous, Toxic and Radioactive
Waste Management Practice Periodical, 3(4):155-166.
attenuation of PAH-contaminated sites
Research Objectives: Application of natural attenuation
principles for closure of coal-tar sites. Specific objectives
of the research are investigating the line of evidence of
biodegradation and microbial community.
Rogers, S. W., T. B. Moorman,
S.K. Ong, 2007,
Fluorescent In Situ Hybridization and Micro-autoradiography Applied
to Ecophysiology in Soil, Soil Science Soc. of
America Journal, 71(2):620-631.
Rogers, S. W., S. K. Ong, G. A.
Stenback, J. Golchin , and B. H. Kjartanson, 2007,
Evidence of intrinsic bioremediation of a coal-tar impacted aquifer
based on coupled reactive transport and biogeochemical mass balance
approaches, Water Environment Federation, 79 (1):13-28.
Rogers, S.W., S. K. Ong, T.
Moorman, 2005, Application of Fish and Microautoradiography to
Determine Microbial Community Structure and Activity in Soil. ASA-CSSA-SSSA
International Annual Meetings, Nov. 6-10, Salt Lake City, UT
Rogers, S.W., S.K. Ong, B. Kjartanson, J. Golchin,
G.A. Stenback. 2002. Natural attenuation of PAH-contaminated sites:
A Review, ASCE Hazardous, Toxic and Radioactive Waste Management
Practice Periodical, (in print).
and chemical processes for treatment of hazardous and industrial
wastewaters and for water reuse
- biological aerated
sequencing batch biofilm bioreactors
Protzman, R.S., P.H. Lee, S.K. Ong, and T.B.
Moorman. 1999. Treatment of formulated atrazine rinsate by Agrobacterium
radiobacter Strain J14a in a sequencing batch biofilm reactor. Water
Research, 33(6):1399 1404.
Kim, C.S. and S.K. Ong. 1999. Recycling of
lead-contaminated EDTA wastewater, J. Hazardous Materials,
chemicals in municipal wastewater treatment plants, septic tanks,
Braida, W., S.K. Ong, W.L. Smith, and J.W. McCabe.
1998. Fate of adsorbable organic halides (AOXs) from bleached
laundering in septic tank systems. Environ. Toxicology and Chem. 17(3):398
Ong, S.K., G.M. DeGraeve, R.A. Silva-Wilkinson,
J.W. McCabe, and W.L. Smith. 1996. Toxicity and bioconcentration
potential of adsorbable organic halides from bleached laundering in
municipal wastewater. Environ. Toxicology and Chem. 15(2):
138 - 143.
Fundamental studies on Air
Rogers, S.W., S.K. Ong, and K.
P. Chao. 2004. Modeling the removal of benzene NAPL under air-sparged
conditions. ASCE J. of Environ. Engineering, 130(7):751 -
Braida, W. and S.K. Ong. 2001. Air sparging
effectiveness: Laboratory characterization of air-channel mass
transfer zone for VOC volatilization. J. Hazardous Materials,
Rogers, S.W. and S.K. Ong. 2000. Influence of
porous media, airflow rate, and channel spacing on benzene NAPL
removal during air sparging, Environ. Sci. and Technol.