Oxidation effects on Microcystis aeruginosa inactivation through various reactive oxygen species: Degradation efficiency, mechanisms, and physiological properties.
Bioresour Technol
; 402: 130806, 2024 Jun.
Article
de En
| MEDLINE
| ID: mdl-38718906
ABSTRACT
The study investigated the inactivation of Microcystis aeruginosa using a combined approach involving thermally activated peroxyacetic acid (Heat/PAA) and thermally activated persulfate (Heat/PDS). The Heat/PDS algal inactivation process conforms to first-order reaction kinetics. Both hydroxyl radical (â¢OH) and sulfate radical (SO4-â¢) significantly impact the disruption of cell integrity, with SO4-⢠assuming a predominant role. PAA appears to activate organic radicals (ROâ¢), hydroxyl (â¢OH), and a minimal amount of singlet oxygen (1O2). A thorough analysis underscores persulfate's superior ability to disrupt algal cell membranes. Additionally, SO4-⢠can convert small-molecule proteins into aromatic hydrocarbons, accelerating cell lysis. PAA can accelerate cell death by diffusing into the cell membrane and triggering advanced oxidative reactions within the cell. This study validates the effectiveness of the thermally activated persulfate process and the thermally activated peroxyacetic acid as strategies for algae inactivation.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Oxydoréduction
/
Espèces réactives de l'oxygène
/
Microcystis
Langue:
En
Journal:
Bioresour Technol
Sujet du journal:
ENGENHARIA BIOMEDICA
Année:
2024
Type de document:
Article
Pays d'affiliation:
Chine
Pays de publication:
Royaume-Uni