Novel method of removing metals from estuarine water using whole microbial mats.

Autor: Pontet NGM; Argentine Institute of Oceanography, CONICET - National University of the South (UNS), Carrindanga 7.5 km Road, B8000FWB , Bahía Blanca, Argentina. nmpontet@iado-conicet.gob.ar.; Department of Biology, Biochemistry, and Pharmacy, National University of the South (UNS), San Juan 670, B8000ICN, Bahía Blanca, Argentina. nmpontet@iado-conicet.gob.ar., Fernández C; Institute of Biochemical Research of Bahía Blanca, CONICET - National University of the South (UNS), Carrindanga 7.5 km Road, B8000FWB, Bahía Blanca, Argentina.; Center for Entrepreneurship and Sustainable Territorial Development (CEDETS), Provincial University of the Southwest (UPSO) - Commission of Scientific Research of the Province of Buenos Aires (CIC), Cali 320 city, B8003FTH, Bahía Blanca, Argentina., Botté SE; Argentine Institute of Oceanography, CONICET - National University of the South (UNS), Carrindanga 7.5 km Road, B8000FWB , Bahía Blanca, Argentina.; Department of Biology, Biochemistry, and Pharmacy, National University of the South (UNS), San Juan 670, B8000ICN, Bahía Blanca, Argentina.
Jazyk: angličtina
Zdroj: Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine [Biometals] 2024 Aug; Vol. 37 (4), pp. 877-894. Date of Electronic Publication: 2024 Jan 25.
DOI: 10.1007/s10534-023-00578-7
Abstrakt: This study addresses the limited understanding of chromium-microbial mat interactions in estuarine tidal flats. The aims were to evaluate (1) the efficiency of the microbial consortium in Cr(III) removal from seawater; (2) the elemental and mineralogical composition of the microbial mat as a natural system in the Cr removal, (3) the effects of metal on microphytobenthos, and (4) possible interactions of Cr with other metals present in the consortium. Microbial mats were exposed to Cr(III) solutions at different concentrations (2-30 mg Cr/L). Analysis such as metal concentration, organic matter content, chlorophyll a and phaeopigment concentrations, abundance of diatoms and cyanobacteria, SEM-EDS, and XRD were performed. Most of the Cr(III) was deposited, as chromium oxide/hydroxide, on the surface of all microbial mat components. The complete microbial mat, comprising sediments, detritus, EPS, and diverse microorganism communities, exhibited a remarkable capacity to accumulate Cr(III), retaining over 87% in the solution.
(© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
Externí odkaz: