DUGiDocsSustainable microalgae-based technology for biotransformation of benzalkonium chloride in oil and gas produced water: A laboratory-scale study
dc.contributor.author
dc.date.accessioned
2021-05-11T11:06:59Z
dc.date.available
2021-05-11T11:06:59Z
dc.date.issued
2020-12-15
dc.identifier.issn
0048-9697
dc.identifier.uri
dc.description.abstract
Many countries have implemented stringent regulatory standards for discharging produced water (PW) from the oil and gas extraction process. Among the different chemical pollutants occurring in PW, surfactants are widely applied in the oil and gas industry to provide a barrier from metal corrosion. However, the release of these substances from the shale formation can pose serious hazardous impacts on the aquatic environment. In this study, a low-cost and eco-friendly microalgae laboratory-scale technology has been tested for biotransformation of benzalkonium chloride (BACC12 and BACC14) in seawater and PW during 14-days of treatment (spiked at 5 mg/L). From the eight microalgae strains selected, Tetraselmis suecica showed the highest removal rates of about 100% and 54% in seawater and PW, respectively. Suspect screening analysis using liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS) allowed the identification of 12 isomeric intermediates generated coming from biotransformation mechanisms. Among them, the intermediate [OH-BACC12] was found as the most intense compound generated from BACC12, while the intermediate [2OH-BACC14] was found as the most intense compound generated from BACC14. The suggested chemical structures demonstrated a high reduction on their amphiphilic properties, and thus, their tendency to be adsorbed into sediments after water discharge. In this study, Tetraselmis suecica was classified as the most successful specie to reduce the surfactant activity of benzalkonium chloride in treated effluents
dc.description.sponsorship
This work has been partly supported by the Generalitat de Catalunya
(Consolidated Research Group (ICRA-ENV 2017 SGR 1124 and 2017-
SGR-1404-Water and Soil Quality Unit). ICRA researchers thank funding
from the CERCA program. S.R.M acknowledges the Ramon y Cajal research fellowships (RYC-2014-16707) from the Spanish Ministry of
Economy and Competitiveness. A.J.G acknowledges the predoctoral
grant 2019FI_B2_00202 from AGAUR and co-financed by the
European Social Fund. A.J.G acknowledges the extra mobility support
provided by the European Cooperation in Science and Technology, Cost
Action (CA17133) “Implementing nature based solutions for creating a resourceful circular city” through the STSM number 44767. This
research has also been financially supported by NordForsk through the
Nordic Center of Excellence NordAqua: “Towards Versatility of Aquatic
Production Platforms: Unlocking the Value of Nordic Bioresources”
(project number 82845)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation.isformatof
Reproducció digital del document publicat a: https://doi.org/10.1016/j.scitotenv.2020.141526
dc.relation.ispartof
© Science of the Total Environment, 2020, vol. 748, art. núm. 141526
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Articles publicats (ICRA)
dc.rights
Attribution 4.0 International
dc.rights.uri
dc.subject
dc.title
Sustainable microalgae-based technology for biotransformation of benzalkonium chloride in oil and gas produced water: A laboratory-scale study
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
032197
dc.type.peerreviewed
peer-reviewed
dc.identifier.eissn
1879-1026