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Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area

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Published on: February 19, 2018

Cobalt-Immobilized Microplastics as a Functional Catalyst for PMS-Based Nitrate Degradation: Optimization Using

Mohammad Javad Amiri^1,2, Mehdi Bahrami^1,2, Anahita Zare¹

¹Department of Water Science and Engineering, Faculty of Agriculture, Fasa University, Fasa 74616-86131, Iran.

Molecules (Basel, Switzerland)

|December 11, 2025

Summary

This summary is machine-generated.

This study presents a cobalt-immobilized microplastic catalyst for efficient nitrate removal from water. The novel system uses peroxymonosulfate and formic acid for effective catalytic denitrification, offering a sustainable solution.

Keywords:

cobalt catalyst nitrate degradation peroxymonosulfate activation process optimization water treatment

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Area of Science:

Environmental Chemistry
Catalysis
Materials Science

Background:

Nitrate contamination in water sources presents serious ecological and public health concerns.
Effective methods for nitrate removal are crucial for water resource management.
Microplastic waste requires sustainable valorization strategies.

Purpose of the Study:

To develop a cobalt-immobilized microplastic catalyst (Co-MP) for activating peroxymonosulfate (PMS).
To facilitate formic-acid-assisted catalytic denitrification of nitrate.
To optimize and validate the performance of the Co-MP system for nitrate removal.

Main Methods:

Characterization of the Co-MP catalyst using SEM, FTIR, EDX, and XRD.
Optimization of reaction parameters (catalyst dosage, Co(II) concentration, pH, time) via Response Surface Methodology (RSM).
Evaluation of nitrate and total nitrogen removal efficiency and cobalt leaching.

Main Results:

Successful synthesis of Co-MP with 5.2% surface cobalt content confirmed.
Optimized conditions achieved 90.6% nitrate removal and 86.7% total nitrogen reduction.
Stable catalytic performance with minimal cobalt leaching (0.05 mg L^-1) demonstrated.

Conclusions:

The Co-MP/PMS/formic acid system is highly effective for selective nitrate removal and total nitrogen reduction.
This method offers a sustainable approach to valorize microplastic waste for environmental remediation.
The coupled oxidative-reductive system shows promise for practical water treatment applications.