Application of Electrochemical Technologies for the Treatment of Industrial Wastewater - An Overview

2021 ◽  
Vol 12 (4) ◽  
pp. 8-20
Author(s):  
Das Sagnik ◽  
Palit Sukanchan
Keyword(s):  
Environmental Protection ◽  
Industrial Wastewater ◽  
Chemical Process ◽  
Groundwater Remediation ◽  
Advanced Oxidation Processes ◽  
Human Life ◽  
Environmental Engineering ◽  
Oxidation Processes ◽  
Water And Wastewater ◽  
Life On Earth

Environmental engineering, environmental protection and chemical process engineering are today in the avenues of new scientific revelation and deep scientific regeneration. Industrial wastewater treatment and water purification stand in the midst of scientific introspection and scientific comprehension. Both conventional and non-conventional environmental engineering techniques are today the needs of the hour. Non-conventional environmental engineering techniques involve electrochemical treatments and advanced oxidation processes. This review investigates the application of electrochemical technologies for the treatment of industrial wastewater. In the article we have also depicted profoundly the immediate need and the immediate concerns of electrochemical treatments of industrial wastewater. The applications of nanotechnology are also delineated in minute details. The main objective of this article is to elucidate on electrochemical technologies, nanotechnology applications and non- conventional environmental protection methods. The present study deeply deals with various electrochemical technologies in the treatment of industrial wastewater. Various areas of nanomaterials and engineering nanomaterials applications in the treatment of water and wastewater are the other areas of deep scientific research pursuit. Heavy metal groundwater remediation and electrochemical treatments are also dealt with scientific vision and scientific ingenuity in this paper. Arsenic groundwater contamination is a disaster to human life on earth. The authors also stresses on these areas of scientific introspection.

scholarly journals Advanced Oxidation Processes for Water and Wastewater Treatment

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1309
Author(s):  
Marco S. Lucas ◽  
José A. Peres ◽  
Gianluca Li Puma
Keyword(s):  
Wastewater Treatment ◽  
Life Expectancy ◽  
Advanced Oxidation Processes ◽  
Human Life ◽  
Advanced Oxidation ◽  
Water And Wastewater Treatment ◽  
Oxidation Processes ◽  
Large Growth ◽  
Water And Wastewater ◽  
Global Population

Technical and scientific developments have facilitated an increase in human life expectancy and quality, which is reflected in a large growth of global population [...]

scholarly journals Recent Advances in Dynamic Modeling and Process Control of PVA Degradation by Biological and Advanced Oxidation Processes: A Review on Trends and Advances

Environments ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 116
Author(s):  
Yi-Ping Lin ◽  
Ramdhane Dhib ◽  
Mehrab Mehrvar
Keyword(s):  
Wastewater Treatment ◽  
Process Control ◽  
Dynamic Modeling ◽  
Reaction Mechanisms ◽  
Industrial Wastewater ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oxidation Processes ◽  
Treatment Technologies ◽  
And Control

Polyvinyl alcohol (PVA) is an emerging pollutant commonly found in industrial wastewater, owing to its extensive usage as an additive in the manufacturing industry. PVA’s popularity has made wastewater treatment technologies for PVA degradation a popular research topic in industrial wastewater treatment. Although many PVA degradation technologies are studied in bench-scale processes, recent advancements in process optimization and control of wastewater treatment technologies such as advanced oxidation processes (AOPs) show the feasibility of these processes by monitoring and controlling processes to meet desired regulatory standards. These wastewater treatment technologies exhibit complex reaction mechanisms leading to nonlinear and nonstationary behavior related to variability in operational conditions. Thus, black-box dynamic modeling is a promising tool for designing control schemes since dynamic modeling is more complicated in terms of first principles and reaction mechanisms. This study seeks to provide a survey of process control methods via a comprehensive review focusing on PVA degradation methods, including biological and advanced oxidation processes, along with their reaction mechanisms, control-oriented dynamic modeling (i.e., state-space, transfer function, and artificial neural network modeling), and control strategies (i.e., proportional-integral-derivative control and predictive control) associated with wastewater treatment technologies utilized for PVA degradation.

Application of UV-Based Advanced Oxidation Processes in Water and Wastewater Treatment

2019 ◽  
pp. 384-414 ◽  
Author(s):  
Nurazim Ibrahim ◽  
Sharifah Farah Fariza Syed Zainal ◽  
Hamidi Abdul Aziz
Keyword(s):  
Advanced Oxidation Processes ◽  
Degradation Mechanism ◽  
Advanced Oxidation ◽  
Water And Wastewater Treatment ◽  
Current Application ◽  
Principal Mechanism ◽  
Low Concentration ◽  
Oxidation Processes ◽  
Treatment Processes ◽  
Water And Wastewater

The presence of hazardous micropollutants in water and wastewater is one of the main concerns in water management system. This micropollutant exists in a low concentration, but there are possible hazards to humans and organisms living in the water. Moreover, its character that is recalcitrant to microbiological degradation makes it difficult to deal with. Advanced oxidation processes (AOPs) are efficient methods to remove low concentration micropollutants. AOPs are a set of processes consisting the production of very reactive oxygen species which able to destroy a wide range of organic compounds. The main principal mechanism in UV-based radical AOP treatment processes is the use ultraviolet light to initiate generation of hydroxyl radicals used to destroy persistent organic pollutants. Therefore, this chapter presents an overview on the principle of radical oxidant species generation and degradation mechanism by various type of UV based AOP in treating contaminants present in water and wastewater. The current application and possible improvement of the technology is also presented in this chapter.

Evaluation of advanced oxidation processes for water and wastewater treatment – A critical review

2018 ◽  
Vol 139 ◽  
pp. 118-131 ◽  
Author(s):  
David B. Miklos ◽  
Christian Remy ◽  
Martin Jekel ◽  
Karl G. Linden ◽  
Jörg E. Drewes ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Critical Review ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Water And Wastewater Treatment ◽  
Oxidation Processes ◽  
Water And Wastewater

The fate of peroxyl radicals in aqueous solution

1997 ◽  
Vol 35 (4) ◽  
pp. 9-15 ◽  
Author(s):  
Clemens von Sonntag ◽  
Peter Dowideit ◽  
Fang Xingwang ◽  
Ralf Mertens ◽  
Pan Xianming ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aromatic Compounds ◽  
Advanced Oxidation Processes ◽  
Room Temperature ◽  
Oxidative Degradation ◽  
High Reactivity ◽  
Peroxyl Radicals ◽  
Oh Radical ◽  
Oxidation Processes ◽  
Water And Wastewater

The reactions of peroxyl radicals occupy a central role in oxidative degradation. Under the term Advanced Oxidation Processes in drinking-water and wastewater processing, procedures are summarized that are based on the formation and high reactivity of the OH radical. These react with organic matter (DOC). With O2, the resulting carbon-centered radicals O2 give rise to the corresponding peroxyl radicals. This reaction is irreversible in most cases. An exception is hydroxycyclohexadienyl radicals which are formed from aromatic compounds, where reversibility is observed even at room temperature. Peroxyl radicals with strongly electron-donating substituents eliminate O2.−, those with an OH-group in a-position HO2.. Otherwise organic peroxyl radicals decay bimolecularly. The tetroxides formed in the first step are very short-lived intermediates and decay by various pathways, leading to molecular products (alcohols, ketones, esters and acids, depending on the precursor), or to oxyl radicals, which either fragment by scission of a neighbouring C-C bond or, when they carry an a-hydrogen, undergo a (water-assisted) 1,2-H-shift.

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