Index Catalog // ScholarsArchive@OSU

Abiotic and biological transformation of TBOS and TKEBS, and their role in the biological transformation of TCE and c-DCE

Creator:: Vancheeswaran, Sanjay
Abstract:: At Site-300, Lawrence Livermore National Laboratory (LLNL), CA, trichloroethene (TCE) is present along with tetraalkoxysilanes such as tetrabutoxysilane (TBOS) and tetrakis(2-ethylbutoxy) silane (TKEBS), as subsurface contaminants. Intrinsic transformation of TCE to cis-dichloroethene (c-DCE) was observed in the groundwater at locations co-contaminated with TBOS or TKEBS. Attenuation of TBOS and TKEBS...
Resource Type:: Masters Thesis
Full Text:: to Dr. James Ingle Jr. and Dr. Lewis Semprini for their encouragement and continued support. There

Suspect Screening of Hydrocarbon surfactants in AFFFs and AFFF-Contaminated Groundwater by High Resolution Mass Spectrometry

Creator:: Garcia, Raymmah A.
Abstract:: Aqueous film forming foams (AFFFs) are proprietary mixtures containing hydrocarbon surfactants and per-and polyfluoroalkyl substances (PFASs) that are used to extinguish hydrocarbon-based fuel fires. There is limited information on hydrocarbon surfactants in AFFFs and AFFF-contaminated groundwater even though they are more abundant (5-10% w/w) than PFASs (0.9-1.5% w /w) in...
Resource Type:: Masters Thesis

Measuring in situ reductive dechlorination rates in trichloroethene-contaminated groundwater

Creator:: Hageman, Kimberly J.
Abstract:: Trichloroethene (TCE) is the most frequently detected organic contaminant in groundwater, is classified as a probable human carcinogen, and exhibits toxicological effects on the human endocrine, immune, developmental, and reproductive systems. While significant research efforts have been devoted to the development of strategies for remediating TCE-contaminated groundwater, their advancement is...
Resource Type:: Dissertation
Full Text:: guidance in all aspects of this dissertation. Dr. Lewis Semprini provided guidance in designing and

Monitoring redox conditions with redox indicators during microbial reductive dechlorination in microcosms and bioaugmented columns

Creator:: Ruiz-Haas, Peter A.
Abstract:: New methods, sensors, and devices based on redox indicators were developed to monitor redox conditions in anoxic and anaerobic laboratory systems and the subsurface environment. The primary application was monitoring redox conditions during the dechlorination of tetrachioroethene (PCE) to ethene (ETH) in packed columns and microcosm bottles containing an enriched...
Resource Type:: Dissertation
Full Text:: funding and the realization of these research projects. I would also like to thank Dr. Lewis Semprini, Dr

Measuring in situ biotransformation in BTEX-contaminated groundwater

Creator:: Alumbaugh, Robert E.
Abstract:: Benzylsuccinate (BSA), methylbenzylsuccinate (methylBSA), and ethylbenzylsuccinate (ethylBSA) are unambiguous anaerobic biotransformation products from toluene, xylenes, and ethylbenzene decay, respectively, and may be used to indicate intrinsic bioremediation is occurring at hydrocarbon-contaminated sites. In order to improve upon current methods that detect and quantify anaerobic hydrocarbon metabolites in field samples, solid-phase-extraction...
Resource Type:: Masters Thesis
Full Text:: Resour. Res. 30 (1994) 369. [56] K.J. Hageman, J.D. Istok, J.A. Field, T.E. Buscheck, L. Semprini

Applications of redox indicators for evaluating redox conditions in environmental samples

Creator:: Jones, Brian Dion
Resource Type:: Dissertation
Full Text:: University. 7. Vancheeswaran, Sanjay; Halden, Roif U.; Semprini, Lewis; Williamson, Kenneth J.; Ingle, James

Development of methodology and instrumentation for determination of chloroform in water

Creator:: Yang, Ying, 1969-
Resource Type:: Dissertation
Full Text:: , Environmental Impact and Health Effects, Vol. 6, Lewis Publishers, 1990, pp 361-427. 6. Bellar, T. A

In situ transformation of toluene and xylene to benzylsuccinic acid analogs in contaminated groundwater

Creator:: Reusser, Dominik E.
Abstract:: The rate of removal of benzene, toluene, ethylbenzene and the xylene isomers (BTEX) from contaminated groundwater is needed to design remediation processes. Benzylsuccinic acid (BSA) and methyl-benzylsuccinic acid (methyl BSA) are unambiguous metabolites of anaerobic BTEX biodegradation. An analytical method for quantitative determination of BSA in groundwater samples was developed....
Resource Type:: Masters Thesis

The development and characterization of miniature spectrometers for measuring the redox status of environmental samples

Creator:: Cantrell, Kevin
Abstract:: A spectrometer, here denoted a Simple, Low-power, Inexpensive. Microcontroller-based or SLIM spectrometer. was developed that exploits the small size and low cost of solid-state electronic devices. This approach results in customizable spectrometers that are considerably less expensive and smaller than traditional instrumentation. The performance of the SLIM spectrometer was evaluated...
Resource Type:: Dissertation
Full Text:: discussed in Chapter 3. l)r. Lew Semprini and George Pon helped with the microcosm work described in

ScholarsArchive@OSU

Abiotic and biological transformation of TBOS and TKEBS, and their role in the biological transformation of TCE and c-DCE

Suspect Screening of Hydrocarbon surfactants in AFFFs and AFFF-Contaminated Groundwater by High Resolution Mass Spectrometry

Measuring in situ reductive dechlorination rates in trichloroethene-contaminated groundwater

Monitoring redox conditions with redox indicators during microbial reductive dechlorination in microcosms and bioaugmented columns

Measuring in situ biotransformation in BTEX-contaminated groundwater

Applications of redox indicators for evaluating redox conditions in environmental samples

Development of methodology and instrumentation for determination of chloroform in water

In situ transformation of toluene and xylene to benzylsuccinic acid analogs in contaminated groundwater

The development and characterization of miniature spectrometers for measuring the redox status of environmental samples

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Conference Section/Track

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search