Electrochemistry: as cause and cure in water pollution—an overview

doi:10.1007/S10311-013-0434-2

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Electrochemistry: as cause and cure in water pollution—an overview

Journal Article•DOI•

Electrochemistry: as cause and cure in water pollution—an overview

Subramanyan Vasudevan¹, Mehmet A. Oturan•Institutions (1)

Council of Scientific and Industrial Research¹

01 Mar 2014-Environmental Chemistry Letters (Springer International Publishing)-Vol. 12, Iss: 1, pp 97-108

TL;DR: In this article, the pollution by the electrochemical industry and the use of electrochemistry to clean water is discussed and the main pollutants include Pd, Cd, Ni, Hg and other metals and cyanide as well as organic pollutants.

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Abstract: This article reviews both the pollution by the electrochemical industry and the use of electrochemistry to clean water. Main pollutants include Pd, Cd, Ni, Hg and other metals and cyanide as well as organic pollutants. The cause for water pollution by electrochemistry is due to the effluents from different electrochemical industries such as mercury from chlor-alkali industry; lead, cadmium and mercury from battery industry; heavy metals and organic contaminants from electroplating wastes; contaminants from corrosion processes; and persistent organic pollutants from the synthesis and use of pesticides, dyes and pharmaceuticals. Most pollutants can be successfully eliminated or converted to non-toxic materials by methods based on the electrochemical principles. Electrochemical depolluting methods are mainly electrodialysis, electrocoagulation, electroflotation, anodic processes, cathodic processes and electrochemical advanced oxidation processes.

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Journal Article•DOI•

Electrochemical advanced oxidation processes: A review on their application to synthetic and real wastewaters

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Francisca C. Moreira¹, Rui A.R. Boaventura¹, Enric Brillas², Vítor J.P. Vilar¹•Institutions (2)

University of Porto¹, University of Barcelona²

01 Mar 2017-Applied Catalysis B-environmental

TL;DR: In this article, an exhaustive review on the treatment of various synthetic and real wastewaters by five key EAOPs, i.e., anodic oxidation (AO), anodic oxidation with electrogenerated H 2 O 2, electro-Fenton (EF), photoelectro-fenton (PEF), alone and in combination with other methods like biological treatment, electrocoagulation, coagulation and membrane filtration processes.

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Abstract: Over the last decades, research efforts have been made at developing more effective technologies for the remediation of waters containing persistent organic pollutants. Among the various technologies, the so-called electrochemical advanced oxidation processes (EAOPs) have caused increasing interest. These technologies are based on the electrochemical generation of strong oxidants such as hydroxyl radicals ( OH). Here, we present an exhaustive review on the treatment of various synthetic and real wastewaters by five key EAOPs, i.e., anodic oxidation (AO), anodic oxidation with electrogenerated H 2 O 2 (AO-H 2 O 2 ), electro-Fenton (EF), photoelectro-Fenton (PEF) and solar photoelectro-Fenton (SPEF), alone and in combination with other methods like biological treatment, electrocoagulation, coagulation and membrane filtration processes. Fundamentals of each EAOP are also given.

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1,457 citations

Journal Article•DOI•

An overview on the removal of synthetic dyes from water by electrochemical advanced oxidation processes.

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Puthiya Veetil Nidheesh¹, Minghua Zhou², Mehmet A. Oturan³•Institutions (3)

National Environmental Engineering Research Institute¹, Nankai University², University of Paris³

01 Apr 2018-Chemosphere

TL;DR: The recent trends in the field of various Electrochemical Advanced Oxidation Processes (EAOPs) used for removing dyes from water medium are provided to indicate that EAOPs constitute a promising technology for the treatment of the dye contaminated effluents.

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756 citations

Cites background from "Electrochemistry: as cause and cure..."

...…tool and its interest is 332 mainly due to its high degrading effectiveness of persistent organic pollutants, fast pollutant 333 removal rate and environmental compatibility (Oturan et al., 2000; Brillas et al., 2009; 334 Nidheesh et al., 2013; Sirés et al., 2014; Vasudevan and Oturan 2014)....
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Journal Article•DOI•

Heterogeneous electro-Fenton and photoelectro-Fenton processes: A critical review of fundamental principles and application for water/wastewater treatment

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Soliu O. Ganiyu¹, Minghua Zhou², Carlos A. Martínez-Huitle¹, Carlos A. Martínez-Huitle³•Institutions (3)

Federal University of Rio Grande do Norte¹, Nankai University², University of Mainz³

05 Nov 2018-Applied Catalysis B-environmental

TL;DR: In this article, the fundamental principles and applications of heterogeneous electrochemical wastewater treatment based on Fenton's chemistry reaction are discussed and the required features of good heterogeneous catalysts are discussed, followed by the mechanisms of catalytic activation of H2O2 to reactive oxygen species (ROS) especially hydroxyl radical ( OH) by heterogeneous catalyst in Hetero-EF system.

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Abstract: This exhaustive review focuses on the fundamental principles and applications of heterogeneous electrochemical wastewater treatment based on Fenton’s chemistry reaction. The elementary equations involved in formation of hydroxyl radical in homogeneous electro-Fenton (EF) and photo electro-Fenton (PEF) processes was presented and the advantages of using insoluble solids as heterogeneous catalyst rather than soluble iron salts (heterogeneous electro-Fenton process) (Hetero-EF) was enumerated. Some of the required features of good heterogeneous catalysts were discussed, followed by the mechanisms of catalytic activation of H2O2 to reactive oxygen species (ROS) especially hydroxyl radical ( OH) by heterogeneous catalyst in Hetero-EF system. Extensive discussion on the two configuration of Hetero-EF system vis-a-vis added solid catalysts and functionalized cathodic materials were provided along with summaries of some relevant studies that are available in literature. The solid catalysts and the functionalized cathodic materials that have been utilized in Hetero-EF wastewater treatment were grouped into different classes and brief discussion on their synthesis route were given. Besides, the use of solid catalysts and iron-functionalized cathodic materials in bioelectrochemical system (BES) especially bioelectro-Fenton technology (BEF) using microbial fuel cells (MFCs) with concurrent electricity generation for Hetero-EF treatment of biorefractory organic pollutants was discussed. In the final part, emphasis was made on the challenges and future prospects of the Hetero-EF for wastewater treatment.

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574 citations

Journal Article•DOI•

Coupling of membrane filtration and advanced oxidation processes for removal of pharmaceutical residues: A critical review

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Soliu O. Ganiyu¹, Eric D. van Hullebusch¹, Marc Cretin², Giovanni Esposito³, Mehmet A. Oturan¹ - Show less +1 more•Institutions (3)

University of Paris¹, University of Montpellier², University of Cassino³

17 Dec 2015-Separation and Purification Technology

TL;DR: In this article, a comprehensive review of membrane separation and advanced oxidation processes (AOPs) is presented for the removal of pharmaceuticals from water, including both membrane permeate and concentrate streams.

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437 citations

Journal Article•DOI•

Removal of hydrophobic organic pollutants from soil washing/flushing solutions: A critical review.

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Clément Trellu¹, Emmanuel Mousset¹, Yoan Pechaud¹, David Huguenot¹, Eric D. van Hullebusch¹, Giovanni Esposito², Mehmet A. Oturan - Show less +3 more•Institutions (2)

University of Paris¹, University of Cassino²

05 Apr 2016-Journal of Hazardous Materials

TL;DR: Main advantages and drawbacks as well as target pollutant removal mechanisms are reviewed and compared, and promising integrated treatments, particularly the use of a selective adsorption step of target pollutants and the combination of advanced oxidation processes with biological treatments, are discussed.

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348 citations

Cites background or methods from "Electrochemistry: as cause and cure..."

...The oxidation power 7 of H2O2 is strongly enhanced in acidic medium in the presence of a catalytic amount of Fe2+ 8 ions [135]....
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...It is based on the in situ electrocatalytic generation of the Fenton’s 2 reagent (the mixture of H2O2 and iron (II)) in homogeneous medium [135]....
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...O2 needed to produce H2O2 can be partially formed at the anode by oxidation of water 6 (particularly with Pt anode) and directly injected as compressed air [135]....
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References

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Journal Article•DOI•

Science and technology for water purification in the coming decades

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Mark A. Shannon¹, Paul W. Bohn², Paul W. Bohn¹, Menachem Elimelech³, Menachem Elimelech¹, John G. Georgiadis¹, Benito J. Mariñas¹, Anne M. Mayes⁴, Anne M. Mayes¹ - Show less +5 more•Institutions (4)

University of Illinois at Urbana–Champaign¹, University of Notre Dame², Yale University³, Massachusetts Institute of Technology⁴

20 Mar 2008-Nature

TL;DR: Some of the science and technology being developed to improve the disinfection and decontamination of water, as well as efforts to increase water supplies through the safe re-use of wastewater and efficient desalination of sea and brackish water are highlighted.

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Abstract: One of the most pervasive problems afflicting people throughout the world is inadequate access to clean water and sanitation. Problems with water are expected to grow worse in the coming decades, with water scarcity occurring globally, even in regions currently considered water-rich. Addressing these problems calls out for a tremendous amount of research to be conducted to identify robust new methods of purifying water at lower cost and with less energy, while at the same time minimizing the use of chemicals and impact on the environment. Here we highlight some of the science and technology being developed to improve the disinfection and decontamination of water, as well as efforts to increase water supplies through the safe re-use of wastewater and efficient desalination of sea and brackish water.

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6,967 citations

"Electrochemistry: as cause and cure..." refers background in this paper

...…to safe drinking water; 2.6 billion have little or no sanitation; and millions of people die annually (3,900 children a day) from diseases transmitted through unsafe water or human excreta (Mark Shannon et al. 2008; Ball 2008; Montgomery and Elimelech 2007; Kumar et al. 2005; Ayoob and Gupta 2006)....
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Journal Article•DOI•

Electro-Fenton process and related electrochemical technologies based on Fenton's reaction chemistry

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Enric Brillas¹, Ignasi Sirés¹, Mehmet A. Oturan¹•Institutions (1)

University of Barcelona¹

19 Oct 2009-Chemical Reviews

TL;DR: Electro-Fenton (EF) Process 6585 4.2.1.

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Abstract: 2.2. Fenton’s Chemistry 6575 2.2.1. Origins 6575 2.2.2. Fenton Process 6575 2.3. Photo-Fenton Process 6577 3. H2O2 Electrogeneration for Water Treatment 6577 3.1. Fundamentals 6578 3.2. Cathode Materials 6579 3.3. Divided Cells 6580 3.4. Undivided Cells 6583 4. Electro-Fenton (EF) Process 6585 4.1. Origins 6585 4.2. Fundamentals of EF for Water Remediation 6586 4.2.1. Cell Configuration 6586 4.2.2. Cathodic Fe2+ Regeneration 6586 4.2.3. Anodic Generation of Heterogeneous Hydroxyl Radical 6587

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2,652 citations

"Electrochemistry: as cause and cure..." refers background in this paper

...Recently, the electrochemical advanced oxidation processes (EAOPs) have received great attention by their environmental safety and compatibility (operating at mild conditions), versatility, high efficiency and amenability of automation (Brillas et al. 2009)....
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Journal Article•DOI•

Electrochemical technologies in wastewater treatment

[...]

Guohua Chen¹•Institutions (1)

Hong Kong University of Science and Technology¹

15 Jul 2004-Separation and Purification Technology

TL;DR: In this article, the development, design and applications of electrochemical technologies in water and wastewater treatment are reviewed with particular focus on electrodeposition, electrocoagulation, electroflotation (EF), and electrooxidation.

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2,577 citations

"Electrochemistry: as cause and cure..." refers methods in this paper

...…efficiency, cleaner processing and modern techniques for electrical energy storage and conversion (Rajeshwar and Ibanez 1997a; Genders and Weinberg 1992; Bockris 1972; Pletcher and Walsh 1993; Rajeshwar and Ibanez 1997b; Simonsson 1997; Panizza and Cerisola 2005; Anglada et al. 2009; Chen 2004)....
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Journal Article•DOI•

Decontamination and disinfection of water by solar photocatalysis: Recent overview and trends

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Sixto Malato, Pilar Fernández-Ibáñez, M. I. Maldonado, Julián Blanco, Wolfgang Gernjak¹ - Show less +1 more•Institutions (1)

University of Queensland¹

15 Sep 2009-Catalysis Today

TL;DR: In this article, the authors reviewed the use of sunlight to produce the OH radicals by TiO2 photocatalysis and photo-Fenton process and summarized most of the research carried out related to solar photocatalytic degradation of water contaminants and how it could significantly contribute to the treatment of persistent toxic compounds.

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2,541 citations

"Electrochemistry: as cause and cure..." refers background in this paper

...In this way, water containing organic, inorganic or microbiological pollutants can be effectively treated (Malato et al. 2009)....
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Journal Article•DOI•

LXXIII.—Oxidation of tartaric acid in presence of iron

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H. J. H. Fenton

01 Jan 1894-Journal of The Chemical Society, Transactions

2,372 citations

"Electrochemistry: as cause and cure..." refers background in this paper

...Compared to other chemical oxidant, H2O2 is a weak oxidant, but its oxidation power can be strongly enhanced in the presence of Fe2? ions (Fenton 1894)....
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