Research into arsenic (III) effective catalytic oxidation in an aqueous solution on a new active manganese dioxide in a flow column

Authors

DOI:

https://doi.org/10.15587/2706-5448.2024.298969

Keywords:

groundwater, removal of arsenic from water, arsenic (III) oxidation, arsenic (III) oxidation catalysts, arsenic sorption, manganese dioxide

Abstract

Groundwater in many places on Earth contains arsenic compounds. Arsenic (III) compounds must be oxidised to purify water containing arsenic effectively. The subject of this study is oxidation of arsenic (III) compounds in an aqueous solution.

Today’s most common industrial arsenic oxidation method using aggressive oxidising agents such as chlorine or ozone has a number of serious disadvantages. The most problematic of these include extremely high risks to human health and the environment, the cost and overall complexity of the process. Catalytic oxidation of arsenic (III) compounds using atmospheric oxygen is an alternative free from the above disadvantages, yet, to date, no information about effective catalysts for this process has been presented in the literature.

The arsenic (III) catalytic oxidation process is studied in an aqueous solution on a new active manganese dioxide (NAMD) synthesised by the author. A comparative experimental analysis is performed with other known modifications of manganese dioxide. It is shown that the new active manganese dioxide (NAMD) has high catalytic activity towards arsenic (III), this being confirmed experimentally in both a limited volume and a flow column mode. Some theoretical aspects of the mechanism for catalytic oxidation of arsenic (III) with oxygen on active manganese dioxide in an aqueous solution are also discussed on the basis of the research results.

Experimental work is required at pilot plants in the field for successful industrial implementation of the technology for catalytic oxidation of arsenic (III) compounds on NAMD. Further laboratory research is necessary for developing a detailed theoretical basis for catalytic oxidation of arsenic in aqueous solutions.

The results of this research are of interest to industrial companies specialising in removing arsenic compounds from water, to scientists and researchers studying catalytic oxidation of arsenic (III), as well as heterogeneous catalytic oxidation with oxygen in general.

Author Biography

Denis Abower

Independent Researcher

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Research into arsenic (III) effective catalytic oxidation in an aqueous solution on a new active manganese dioxide in a flow column

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Published

2024-02-29

How to Cite

Abower, D. (2024). Research into arsenic (III) effective catalytic oxidation in an aqueous solution on a new active manganese dioxide in a flow column. Technology Audit and Production Reserves, 1(3(75), 15–23. https://doi.org/10.15587/2706-5448.2024.298969

Issue

Vol. 1 No. 3(75) (2024): Chemical engineering

Section

Chemical and Technological Systems

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Copyright (c) 2024 Denis Abower

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