Mesoporous Carbon Framework Supported Fe-Cu-Mn Oxides as  An  Efficient Peroxymonosulfate Catalyst for the Control of Harmful Algal Blooms: Synergism of Fe-Cu-Mn and R Ole of Mesoporous Carbon

30 Pages Posted: 3 Oct 2022

See all articles by Zijun Yang

Zijun Yang

Hohai University

Jun Hou

Hohai University

Abstract

Few studies have focused on the advanced oxidation processes (AOPs) based on heterogeneous catalysis to control harmful algal blooms (HABs). Herein, a mesoporous carbon framework supported Fe-Cu-Mn oxides (FeMn 2 O 4 /CuO; FCMT) was synthesized via calcination of cost-effective metal-polyphenol coordination polymers for peroxymonosulfate (PMS) activation to eliminating Microcystis aeruginosa  and algal organic matters (AOMs). More than 99% of algae were removed at low FCMT and PMS dosages in the FCMT/PMS within 120 min. The FCMT/PMS system removed algae effectively over extensive pH (3.0‒9.0) and algal density (OD 680 =0.05‒0.4) ranges. Although FCMT/PMS-induced oxidative stress damaged cell membranes, over 50% of the dissolved organic carbon and 54% of microcystins were eliminated, avoiding serious secondary pollution caused by cell lysis. Algal removal by the FCMT/PMS system involved pathways associated with both free radicals and non-free radicals, with the dominant radicals being O 2 •   −  and 1 O 2 . Synergy between Fe, Mn, and Cu promoted the elimination of algae and AOMs. Mn found to be the primary active site on the FCMT surface, while Fe(Ⅲ) was cooperated with Mn by acting as the main adsorption site. The mesoporous carbon allowed uniform spatial distribution of the nanosized Fe-Cu-Mn oxides as well as modulating the direction of ROS generation by the metals. In conclusion, the proposed heterogeneous advanced oxidation process using the FCMT/PMS system is highly potential in the control of HABs.

Keywords: Harmful algal blooms, Metal-polyphenol coordination polymers (MPCPs), Mesoporous carbon, heterogeneous catalysis, Algal organic matters (AOMs)

Suggested Citation

Yang, Zijun and Hou, Jun, Mesoporous Carbon Framework Supported Fe-Cu-Mn Oxides as  An  Efficient Peroxymonosulfate Catalyst for the Control of Harmful Algal Blooms: Synergism of Fe-Cu-Mn and R Ole of Mesoporous Carbon. Available at SSRN: https://ssrn.com/abstract=4235933 or http://dx.doi.org/10.2139/ssrn.4235933

Zijun Yang

Hohai University ( email )

8 Focheng West Road
Jiangning District
Nanjing, 211100
China

Jun Hou (Contact Author)

Hohai University ( email )

8 Focheng West Road
Jiangning District
Nanjing, 211100
China

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