Photocatalytic removal of the cyanobacterium Microcystis aeruginosa PCC7813 and four microcystins by TiO
Cyanobacteria
Cyanotoxins
Photocatalysis
Titanium dioxide
UV-LED
Water treatment
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
25 Nov 2020
25 Nov 2020
Historique:
received:
03
04
2020
revised:
22
06
2020
accepted:
19
07
2020
pubmed:
8
8
2020
medline:
8
10
2020
entrez:
8
8
2020
Statut:
ppublish
Résumé
Cyanobacteria and their toxic secondary metabolites are a challenge in water treatment due to increased biomass and dissolved metabolites in the raw water. Retrofitting existing water treatment infrastructure is prohibitively expensive or unfeasible, hence 'in-reservoir' treatment options are being explored. In the current study, a treatment system was able to photocatalytically inhibit the growth of Microcystis aeruginosa and remove released microcystins by photocatalysis using titanium dioxide coated, porous foamed glass beads and UV-LEDs (365 nm). A 35% reduction of M. aeruginosa PCC7813 cell density compared to control samples was achieved in seven days. As a function of cell removal, intracellular microcystins (microcystin-LR, -LY, -LW, and -LF) were removed by 49% from 0.69 to 0.35 μg mL
Identifiants
pubmed: 32758751
pii: S0048-9697(20)34683-0
doi: 10.1016/j.scitotenv.2020.141154
pii:
doi:
Substances chimiques
Microcystins
0
titanium dioxide
15FIX9V2JP
Titanium
D1JT611TNE
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
141154Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.