Sulfite-based advanced oxidation and reduction processes for water treatment

2021 ◽  
Vol 414 ◽  
pp. 128872 ◽  
Author(s):  
Shaohua Wu ◽  
Leyuan Shen ◽  
Yan Lin ◽  
Kai Yin ◽  
Chunping Yang
2011 ◽  
Vol 14 (1) ◽  
Author(s):  
Kimberly A. Rickman ◽  
Stephen P. Mezyk

AbstractThe presence of both synthetic and natural steroids in waters is currently one of the most pressing concerns to water treatment utilities. The use of radical-based advanced oxidation/reduction processes (AO/RPs) to augment standard water treatment methods may be of interest. In support of the application of these AO/RP rate constants have been determined for the reaction of the reducing hydrated electron (e


iScience ◽  
2021 ◽  
pp. 102808
Author(s):  
Zheng-Yang Huo ◽  
Dong-Min Lee ◽  
Young-Jun Kim ◽  
Sang-Woo Kim

2019 ◽  
Vol 5 (11) ◽  
pp. 1985-1992 ◽  
Author(s):  
Nor Elhouda Chadi ◽  
Slimane Merouani ◽  
Oualid Hamdaoui ◽  
Mohammed Bouhelassa ◽  
Muthupandian Ashokkumar

We have recently reported that the reaction of H2O2/IO4− could be a new advanced oxidation process for water treatment [N. E. Chadi, S. Merouani, O. Hamdaoui, M. Bouhelassa and M. Ashokkumar, Environ. Sci.: Water Res. Technol., 2019, 5, 1113–1123].


Chemosphere ◽  
2010 ◽  
Vol 78 (5) ◽  
pp. 533-540 ◽  
Author(s):  
Joonseon Jeong ◽  
Weihua Song ◽  
William J. Cooper ◽  
Jinyoung Jung ◽  
John Greaves

In modern water treatment technologies Water needs to be processed to a level that can be reused in a meaningful way. Plasma production or plasma injection in liquid water provides an opportunity to inject advanced Oxidation processes in water for purification or chemical processing. Such technology can revolutionize Drinking water treatment, as well as current practices of chemical processing by removing physical catalysts. An overview of current water treatment is presented here where Technology, its limitations and the future, may include Plasmabased advanced oxidation method. In plasma Introduction to liquid water produces and attacks a host of reactive species finally mineralize the contaminants in the solution. This interaction takes place at the boundary layer or at the interaction zone is concentrated at the plasma - liquid water interface. There are limitations of traditional plasma injection procedures which include limited throughput capacity, electrode shear and reduced Process Volume. Here the technical limitations of plasma based water reactor will also be discussed.


Industrialization and modernization in recent times have led to a water crisis across the world. Conventional methods of water treatment like physical, chemical and biological methods which comprise of many commonly used techniques like membrane separation, adsorption, chemical treatment etc. have been in use for many decades. However, problems like sludge disposal, high operating costs etc. have led to increased focus on Advanced Oxidation Processes (AOPs) as alternative treatment methods. AOPs basically involve reactions relying on the high oxidation potential of the hydroxyl (OH•) free radical. They have the potential to efficiently treat various toxic, organic pollutants and complete degradation of contaminants (mineralization) of emerging concern. Many different types of homogenous as well as heterogenous AOPs have been studied viz: UV/H2O2, Fenton, Photo-Fenton, Sonolysis, Photocatalysis etc. for treatment of a wide variety of organic pollutants. Different AOPs are suitable for different types of wastewater and hence proper selection of the right technique for a particular type of pollutant is required. The inherent advantages offered by AOPs like elimination of sludge disposal problems, operability under mild conditions, ability to harness sunlight, non selective nature (ability to degrade all organic and microbial contamination) etc. have made it one of the most actively researched areas in recent times for wastewater treatment. Despite the benefits and intense research, commercial applicability of AOPs as a practical technique for treating wastewater on a large scale is still far from satisfactory. Nevertheless, positive results in lab scale and pilot plant studies make them a promising water treatment technique for the future. In the present chapter, an attempt has been made to discuss all aspects of AOPs beginning with the fundamental concepts, classification, underlying mechanism, comparison, commercialization to the latest developments in AOPs.


Industrialization and modernization in recent times have led to a water crisis across the world. Conventional methods of water treatment like physical, chemical and biological methods which comprise of many commonly used techniques like membrane separation, adsorption, chemical treatment etc. have been in use for many decades. However, problems like sludge disposal, high operating costs etc. have led to increased focus on Advanced Oxidation Processes (AOPs) as alternative treatment methods. AOPs basically involve reactions relying on the high oxidation potential of the hydroxyl (OH•) free radical. They have the potential to efficiently treat various toxic, organic pollutants and complete degradation of contaminants (mineralization) of emerging concern. Many different types of homogenous as well as heterogenous AOPs have been studied viz: UV/H2O2, Fenton, Photo-Fenton, Sonolysis, Photocatalysis etc. for treatment of a wide variety of organic pollutants. Different AOPs are suitable for different types of wastewater and hence proper selection of the right technique for a particular type of pollutant is required. The inherent advantages offered by AOPs like elimination of sludge disposal problems, operability under mild conditions, ability to harness sunlight, non selective nature (ability to degrade all organic and microbial contamination) etc. have made it one of the most actively researched areas in recent times for wastewater treatment. Despite the benefits and intense research, commercial applicability of AOPs as a practical technique for treating wastewater on a large scale is still far from satisfactory. Nevertheless, positive results in lab scale and pilot plant studies make them a promising water treatment technique for the future. In the present chapter, an attempt has been made to discuss all aspects of AOPs beginning with the fundamental concepts, classification, underlying mechanism, comparison, commercialization to the latest developments in AOPs.


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