Sandra Dworatzek

Affiliation

SIREM

Biography

Senior Principal scientist at SiREM, B.Sc. and M.Sc in Biology, University of Waterloo Ms. Dworatzek is an environmental microbiologist with advanced technical experience in laboratory treatability studies. Over the past 30 years she has conducted and overseen numerous bench-scale studies examining enhanced remediation of chlorinated solvents, petroleum hydrocarbons, emerging contaminants and other recalcitrant compounds. She has specific technical experience in the design of laboratory treatability studies, evaluating aerobic and anaerobic bioremediation, zero valent iron and chemical oxidation technologies in the laboratory, the scale up of growth of aerobic and anaerobic microbial cultures for bioaugmentation laboratory and field pilot tests. She currently provides senior technical oversight of laboratory treatability studies, and she manages the development and scale-up new bioaugmentation cultures. Ms. Dworatzek provides technical oversight for the development of new bioaugmentation cultures for a wide range of emerging contaminants including 1,2,3-trichlorpropane, perchlorate and sulfolane).This work includes developing novel cultures for BTEX compounds under anaerobic conditions and developing aerobic cultures to remediate 1,4-dioxane. Sandra is the industry lead for a project funded by Genome Canada that has successfully commercialized anaerobic BTX-degrading cultures.

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(Group 2, Poster Board #224) Unlocking the Power of Natural Attenuation: Insights from Laboratory Studies and Field Sampling Approaches

13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds

Publication Year: 2024

Part of: H8.: Monitored Natural Attenuation: Innovative Monitoring Approaches/Lines of Evidence and Lessons Learned (Poster)

Abstract
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(Group 1, Poster Board #59) Evaluating the Biodegradation Potential of Diisopropyl Ether in Groundwater: Insights from Laboratory Microcosms

2025 Bioremediation Symposium

Publication Year: 2025

Part of: C2.: Combined Treatment of Emerging Contaminants with CVOCs (Posters)

Abstract
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Discovery, Characterization and In Situ Tracking of Novel Sulfolane-Degrading Microbes

2025 Bioremediation Symposium

Publication Year: 2025

Part of: C3.: Emerging Contaminants: Detection, Degradation, Fate and Transport (Platforms)

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In Situ Bioremediation of 1,4-Dioxane in Mixed Plume with Cycled Anaerobic and Aerobic Metabolic Bioaugmentation and Cometabolism

Fritz Krembs; Kyle McDonald; Mark Settembrino; Ana Hopper & Sandra Dworatzek

2025 Bioremediation Symposium

Publication Year: 2025

Part of: D6.: Impacts of Mixed Contaminants on Biodegradation (Platforms)

Abstract
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The Time Has Come: Case Studies of Petroleum Hydrocarbon Bioremediation Using Anaerobic Bioaugmentation Cultures

Jeff Roberts; Sandra Dworatzek; Corey Scales; Jennifer Webb; Elizabeth Edwards & Courtney Toth

2025 Bioremediation Symposium

Publication Year: 2025

Part of: D8.: Bioremediation Case Studies (Platforms)

Abstract
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(Group 2, Poster Board #74) Microbial Enhancement of Degradation of Benzene and Xylenes in LNAPL Under Methanogenic Conditions

Jorge Montoy; Andrew Kirkman; Sandra Dworatzek & Melody Vachon-Gregory

2025 Bioremediation Symposium

Publication Year: 2025

Part of: D8.: Bioremediation Case Studies (Posters)

Abstract
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