Potential of stable isotope analysis to deduce anaerobic biodegradation of ethyl tert-butyl ether (ETBE) and tert-butyl alcohol (TBA) in groundwater: a review.

Marcelle J van der Waals, Steven F Thornton, Stephen A Rolfe, Luc Rock, Jonathan W N Smith, Tom N P Bosma, Jan Gerritse

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In one paragraph

Review in Environmental science and pollution research international, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

7 authors.

Marcelle J van der WaalsUnit Subsurface and Groundwater Systems, Deltares, Daltonlaan 600, Utrecht, 3484 BK, The Netherlands.

Steven F ThorntonDepartment of Civil and Structural Engineering, University of Sheffield, Mappin St, Sheffield, S1 3JD, UK.

Stephen A RolfeSchool of Biosciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.

Luc RockShell Global Solutions International BV, Carel van Bylandtlaan 30, The Hague, 2596 HR, The Netherlands.

Jonathan W N SmithShell Global Solutions (UK) Ltd, Shell Centre, York Road, London, SE1 7NA, UK.

Tom N P BosmaUnit Subsurface and Groundwater Systems, Deltares, Daltonlaan 600, Utrecht, 3484 BK, The Netherlands.

Jan GerritseUnit Subsurface and Groundwater Systems, Deltares, Daltonlaan 600, Utrecht, 3484 BK, The Netherlands. jan.gerritse@deltares.nl.ORCID http://orcid.org/0000-0003-2184-6630

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Understanding anaerobic biodegradation of ether oxygenates beyond MTBE in groundwater is important, given that it is replaced by ETBE as a gasoline additive in several regions. The lack of studies demonstrating anaerobic biodegradation of ETBE, and its product TBA, reflects the relative resistance of ethers and alcohols with a tertiary carbon atom to enzymatic attack under anoxic conditions. Anaerobic ETBE- or TBA-degrading microorganisms have not been characterized. Only one field study suggested anaerobic ETBE biodegradation. Anaerobic (co)metabolism of ETBE or TBA was reported in anoxic microcosms, indicating their biodegradation potential in anoxic groundwater systems. Non-isotopic methods, such as the detection of contaminant loss, metabolites, or ETBE- and TBA-degrading bacteria are not sufficiently sensitive to track anaerobic biodegradation in situ. Compound- and position-specific stable isotope analysis provides a means to study MTBE biodegradation, but isotopic fractionation of ETBE has only been studied with a few aerobic bacteria (εC -0.7 to -1.7‰, εH -11 to -73‰) and at one anoxic field site (δ

Indexed as

Ethyl EthersGroundwaterMethyl EthersAnaerobiosisBiodegradation, EnvironmentalCarbonCarbon Isotopestert-Butyl AlcoholCarbonCarbon IsotopesEthyl Ethersethyl tert-butyl etherMethyl Ethersmethyl tert-butyl ethertert-Butyl AlcoholCompound-specific stable isotope analysisGasoline ether oxygenatesIsotopic fractionationNatural attenuationPosition-specific stable isotope analysisTertiary alcohols

Identifiers

PMID38319419

DOI10.1021/ac034230i

PMCPMC10894111

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