Highly Cost-Effective and Reuse-Oriented Treatment of Cadmium-Polluted Mining Wastewater by Electrocoagulation Process

Brahmi, Khaled; Bouguerra, Wided; Missaoui, Khawla; Tlili, Zied; Elaloui, Elimame; Loungou, Mouna; Hamrouni, Béchir

doi:10.1061/(asce)ee.1943-7870.0001128

Cited by 6 publications

(4 citation statements)

References 48 publications

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“…Cd 2+ contaminated water is always found to exist under the acid condition with pH value ranges from 2-6 [42][43][44][45]. To further evaluate the effect of pH on Cd 2+ adsorption by MOS/OCN-1, the adsorption capacity was determined separately under these conditions (Fig.…”

Section: Influences Of Ph and Competing Ions On CD 2+ Adsorptionmentioning

confidence: 99%

Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization

Wang

et al. 2019

Journal of Colloid and Interface Science

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: Influences Of Ph and Competing Ions On CD 2+ Adsorptionmentioning

confidence: 99%

Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization

Wang

et al. 2019

Journal of Colloid and Interface Science

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“…Temperaturas elevada favorece la formación de grandes burbujas de hidrógeno, favoreciendo la velocidad de flotación [71]. La eficiencia de eliminación de contaminantes también se ve favorecida con el aumento de la temperatura [17,40]. El efecto de la temperatura inicial (18, 30, 50 y 70°C) ha sido estudiado en la eliminación de cadmio de aguas residuales industriales a través del proceso de la EC utilizando electrodos de aluminio, en donde el aumento de la temperatura y la reducción del tiempo de electrólisis mejoró significativamente la eficiencia de remoción, alcanzando una eliminación máxima del 98% a una temperatura de 50°C y un tiempo de electrólisis de 30 min [40,67].…”

Section: Temperaturaunclassified

“…Recientemente, y dentro de los diversos procesos de oxidación avanzados, se ha demostrado que los procesos asistidos electroquímicamente son una alternativa real para mejorar la calidad del agua y eliminar los contaminantes recalcitrantes [15][16][17][18]. Dentro de estos, la coagulación asistida electroquímicamente más conocida como electrocoagulación (EC), utiliza reacciones de oxidación-reducción transformando la materia coloidal existente en el agua residual en sólidos en suspensión, simplificando su aislamiento a través de técnicas convencionales de separación sólido-líquido, como decantación, flotación y filtración [19][20][21][22].…”

Section: Introductionunclassified

Treatment of cosmetic industry wastewater by submerged membrane bioreactor with consideration of microbial community dynamics

Friha

Karray

Feki

et al. 2014

International Biodeterioration & Biodegradation

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“…Since it is impractical to add chemicals, it will greatly limit the engineered application of EC toward the treatment of low-conductivity water such as lake water, groundwater and tap water. For this reason, high-concentration inorganic salts such as Na 2 SO 4 , NaNO 3 , NaCl and NaClO 4 have to be used as supporting electrolyte to provide free mobile ions for increasing solution conductivity in almost all previous studies, − which normally requires further desalination treatment. Besides, the salt film formed on the surface of the anode would hinder ·OH generation as well as the contact between the organics and the anode.…”

Section: Introductionmentioning

confidence: 99%

Chlorophenolic Compounds Degradation Based on Electrolyte-Free Electrochemical Cells

Teng

Zhang

Wang

et al. 2018

ACS Sustainable Chem. Eng.

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To eliminate the requirement for inorganic salt in electrochemical processes, the present study reports the use of ion-exchange resin (IX) matrix to conduct H + or OH − produced during electrolysis for electrochemical degradation of refractory organic pollutants via the generation of reactive oxygen species at room temperature. The results demonstrated that, with the increase in applied voltage over the range of 0−30 V, there was almost no response of current for deionized water as well as chloromethylated bead due to the lack of free mobile ions. On the contrary, both cation exchange resin (CX) and anion exchange resin (AX) showed comparable current response to voltage as sodium sulfate electrolyte. In the absence of salt addition, the CX or AX could achieve effective degradation of 2,4-dichlorophenol (2,4-DCP), accounting for degradation efficiency higher than 97% after 90 min at current density of 5 mA/cm 2 . The performances of IX-based electrochemical system decreased slightly after 20 cycles of experiments, indicating good stability of IX during electrochemical degradation. This study provides a proof-of-concept demonstration of an effective ion-conductive material for low-conductivity water or wastewater decontamination using electrochemical technology, making low-conductivity water treatment more economical and more sustainable.

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Highly Cost-Effective and Reuse-Oriented Treatment of Cadmium-Polluted Mining Wastewater by Electrocoagulation Process

Cited by 6 publications

References 48 publications

Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization

Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization

Treatment of cosmetic industry wastewater by submerged membrane bioreactor with consideration of microbial community dynamics

Chlorophenolic Compounds Degradation Based on Electrolyte-Free Electrochemical Cells

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