Oxidation effects on Microcystis aeruginosa inactivation through various reactive oxygen species: Degradation efficiency, mechanisms, and physiological properties

Heshan Zheng; Yongjie Zheng; Le Yuan; Shuo Li; Junfeng Niu; Xu Dong; Yoong Kit Leong; Duu-Jong Lee; Jo-Shu Chang

doi:10.1016/j.biortech.2024.130806

Oxidation effects on Microcystis aeruginosa inactivation through various reactive oxygen species: Degradation efficiency, mechanisms, and physiological properties

Bioresour Technol. 2024 Jun:402:130806. doi: 10.1016/j.biortech.2024.130806. Epub 2024 May 6.

Authors

Heshan Zheng¹, Yongjie Zheng¹, Le Yuan¹, Shuo Li², Junfeng Niu³, Xu Dong¹, Yoong Kit Leong⁴, Duu-Jong Lee⁵, Jo-Shu Chang⁶

Affiliations

¹ College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China.
² College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China. Electronic address: shuo_105@163.com.
³ College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
⁴ Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan.
⁵ Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tang, Hong Kong, China.
⁶ Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Chemical Engineering, National Cheng-Kung University, Tainan, Taiwan; Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li 32003, Taiwan. Electronic address: changjs@mail.ncku.edu.tw.

PMID: 38718906
DOI: 10.1016/j.biortech.2024.130806

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 (•OH) and sulfate radical (SO₄^-•) significantly impact the disruption of cell integrity, with SO₄^-• assuming a predominant role. PAA appears to activate organic radicals (RO•), hydroxyl (•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.

Keywords: Advanced oxidation reactions; Algae inactivation; Thermally activated peroxyacetic acid; Thermally activated persulfate.

MeSH terms

Hot Temperature
Hydroxyl Radical / metabolism
Kinetics
Microcystis* / drug effects
Microcystis* / metabolism
Oxidation-Reduction*
Peracetic Acid / pharmacology
Reactive Oxygen Species* / metabolism
Sulfates / chemistry
Sulfates / metabolism
Sulfates / pharmacology

Substances

Reactive Oxygen Species
Sulfates
Peracetic Acid
Hydroxyl Radical