Duckweed Potential for the Phytoremediation of Linear Alkylbenzene Sulfonate (LAS): Identification of Some Intermediate Biodegradation Products and Evaluation of Antioxidant System.

Autor: Masoudian Z; Department of Plant Sciences, Faculty of Natural Sciences, University of Tabriz, Tabriz, 5166616471, East Azerbaijan, Iran. zahramasoodian@yahoo.com., Salehi-Lisar SY; Department of Plant Sciences, Faculty of Natural Sciences, University of Tabriz, Tabriz, 5166616471, East Azerbaijan, Iran., Norastehnia A; Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran., Tarigholizadeh S; Department of Plant Sciences, Faculty of Natural Sciences, University of Tabriz, Tabriz, 5166616471, East Azerbaijan, Iran.
Jazyk: angličtina
Zdroj: Bulletin of environmental contamination and toxicology [Bull Environ Contam Toxicol] 2022 Aug; Vol. 109 (2), pp. 364-372. Date of Electronic Publication: 2022 Jun 07.
DOI: 10.1007/s00128-022-03549-9
Abstrakt: Duckweed (Lemna minor L.) has a high potential for wastewater treatment. Here, its capability for bioremoval of linear alkylbenzene sulfonate (LAS) as one of the primary contaminants of water resources was evaluated. The effect of some operational parameters on surfactant removal efficiency was determined. Also, the impact of LAS on several physiological responses of Lemna was investigated. LAS remediation efficiency of L. minor was elevated with increasing LAS concentration, duckweed weight, and temperature. Furthermore, the optimal pH for removal was 7-8.5. The benzenesulfonate ring and five homologs of sulfophenyl carboxylate were identified as intermediates in the LAS degradation pathway. A decrease in relative growth rate and pigment contents was observed by increasing LAS concentration. In contrast, an increase in hydrogen peroxide content and electrolyte leakage indicated oxidative stress by LAS. Induction of enzymatic/non-enzymatic antioxidants was observed during the surfactant remediation process, indicating their role in overcoming free radicals generated under surfactant stress.
(© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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