Wastewater treatment with ionizing radiation

Wojnárovits, László; Takács, Erzsébet

doi:10.1007/s10967-016-4869-3

Cited by 49 publications

(14 citation statements)

References 48 publications

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“…This competition can affect the efficiency of the purification process [14], these substances are called • OH radical scavengers as they usually cause a decrease in the degradation efficiency [15,16]. Wojnarovits and Takacs [17] showed that the pH value of a radiationtreated solution has a significant effect on the progress of competitive reactions with hydroxyl radicals. The reaction with chloride ions is predominant at pH < 5, while the reaction with carbonate and bicarbonate ions is predominant at a neutral or slightly Water and wastewater subjected to purification and treatment processes are very complex matrices.…”

Section: 𝑒 + 𝐻 → 𝐻 •mentioning

confidence: 99%

Application of Radiation Technology in Removing Endocrine Micropollutants from Waters and Wastewaters—A Review

Bojanowska-Czajka

2021

Applied Sciences

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Advanced Oxidation Processes (AOPs) are increasingly being adopted as a post-treatment after conventional wastewater treatment, mainly due to the efficient removal of biodegradable organic micropollutants. Endocrine disruptors are a specific group of such micropollutants. Many scientific studies demonstrate their extremely harmful effects on living organisms, even at low concentrations in water and wastewater. AOPs based on the generation of reactive species using radiation technologies, these being gamma radiation and electron beam, are still not being used to their full potential. This publication presents the application possibilities of using ionizing radiation for the degradation of selected endocrine micropollutants in water and wastewater.

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Section: 𝑒 + 𝐻 → 𝐻 •mentioning

confidence: 99%

Application of Radiation Technology in Removing Endocrine Micropollutants from Waters and Wastewaters—A Review

Bojanowska-Czajka

2021

Applied Sciences

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“…The amount of the specific radicals available for interaction with certain solute could be calculated using the reaction probability (P A ) according to the following equation: Figure 2 illustrates the reactions between the primary intermediates and the available anions in the wastewater effluents. Wojnarovits and Takacs [30] indicated that intermediate reaction with chloride ions is dominant at pH < 5, whereas the reaction with carbonate and bicarbonate ions are dominant at neutral or slightly alkaline pH. The produced free radicals will subsequently react with dissolved organic matters in the wastewater via direct electron transfer (outer sphere electron), addition to double bonds (inner sphere electron) or abstraction of H-atoms from C-H bonds.…”

Section: Decomposition and Removal Mechanismsmentioning

confidence: 99%

Application of Ionizing Radiation in Wastewater Treatment: An Overview

Rahman

Hung

2019

Water

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Technological applications of nuclear science and technology in different sectors have proved their reliabilities and sustainability over decades. These applications have supported various human civilization needs, ranging from power generation to industrial, medical, and environmental applications. Environmental applications of radiation sources are used to support decision making processes in many fields; including the detection and analysis of pollutant transport, water resources management, and treatment of municipal and industrial wastewaters. This work reviewed recent advances in the research and applications of ionizing radiation in treating different wastewater effluents. The main objective of the work is to highlight the role of ionizing radiation technology in the treatment of complex wastewater effluents generated from various human activities and to address its sustainability. Results of both laboratory and industrial scale applications of this treatment technology have been reviewed, and information on operational safety of industrial irradiators, which affect the sustainability of this technology, has been summarized.

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“…Most principal reactions of reactive products of water radiolysis with a solute, concerning wastewater treatment by ionizing radiation, have been overviewed recently [5]. …”

Section: Industrial Wastewatermentioning

confidence: 99%

“…However, the attribution of radiation treatment to AOPs seems to be not quite correct, since ionizing radiation initiates in irradiated media not only oxidizing processes but also reducing ones. Though the formation of reducing particles under radiolysis, as well as under photolysis, sonolysis, electrolysis, and so on, has been mentioned earlier repeatedly [3][4][5], the role of reductive processes in the purification of water and wastewater was not considered as specific and important one, partly due to comparatively low importance of the processes in the decomposition of organic compounds.…”

Section: Introductionmentioning

confidence: 99%

Radiation-Induced Degradation of Organic Compounds and Radiation Technologies for Purification of Aqueous Systems

Makarov¹,

Пономарев²

2018

Ionizing Radiation Effects and Applications

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Environmental application of radiation technologies is an important part of radiation processing. Radiation treatment of aqueous systems contaminated with organic compounds is a promising method of water and wastewater purification and corresponding technologies are being developed. In this chapter, the following aspects of radiation treatment process are considered: sources of contamination and major contaminants of water and wastewater; primary processes in aqueous systems initiated by ionizing radiation; principal ways of contaminant conversion as consequences of primary processes (complete mineralization of organic compounds, partial decomposition of organic molecules resulted in detoxification, decolorization, disinfection of polluted water, and improvement in biological degradation of contaminant, polymerization of monomers' contaminants, oxidation-reduction processes, and coagulation of colloids); sources of ionizing radiation; and main equipment applied in radiation technologies of aqueous system purification.

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Wastewater treatment with ionizing radiation

Cited by 49 publications

References 48 publications

Application of Radiation Technology in Removing Endocrine Micropollutants from Waters and Wastewaters—A Review

Application of Radiation Technology in Removing Endocrine Micropollutants from Waters and Wastewaters—A Review

Application of Ionizing Radiation in Wastewater Treatment: An Overview

Radiation-Induced Degradation of Organic Compounds and Radiation Technologies for Purification of Aqueous Systems

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