A sequential process to treat a cashew-nut effluent: Electrocoagulation plus electrochemical oxidation

Costa, Patrícia Rachel Fernandes da; Costa, Emily C. Tossi de A.; Castro, Sonia; Fajardo, Ana S.; Martínez‐Huitle, Carlos A.

doi:10.1016/j.jelechem.2018.12.035

Cited by 18 publications

(5 citation statements)

References 49 publications

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“…Before starting the electrolysis, the Nb/BDD (Metakem, Germany) electrode was polarized during 30 min with 130 mL of 0.1 M H 2 SO 4 solution at 30 mA cm À 2 , in order to remove any kind of impurity from the material. [35] Anode and cathode were connected a Politerm POL-16 power supply and the experiments were performed under galvanostatic conditions. pH was measured by a HANNA HI4221 pH-meter and adjusted prior to the tests using 1 M H 2 SO 4 (CRQ Química) or 3 M NaOH (Cromoline).…”

Section: Methodsmentioning

confidence: 99%

“…Their working area was 3.0 cm 2 and the interelectrode gap distance was kept about 1 cm. Before starting the electrolysis, the Nb/BDD (Metakem, Germany) electrode was polarized during 30 min with 130 mL of 0.1 M H 2 SO 4 solution at 30 mA cm −2 , in order to remove any kind of impurity from the material . Anode and cathode were connected a Politerm POL‐16 power supply and the experiments were performed under galvanostatic conditions.…”

Section: Methodsmentioning

confidence: 99%

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Electrochemical Technologies for Detecting and Degrading Benzoquinone Using Diamond Films

et al. 2019

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In this work, the detection and quantification of p‐benzoquinone (BQ) was performed by differential pulse voltammetry (DPV) with a diamond film sensor. The calibration curve and the limits of detection and quantification for BQ were estimated. DPV was compared to high‐performance liquid chromatography (HPLC) analysis, leading to a satisfactory result in terms of stability and sensitive response. As a novel aim, a combined electrochemical method for environmental application has been developed to oxidize and detect BQ using diamond films. A set of galvanostatic electrochemical oxidation experiments with 130 mL of BQ solution were accomplished in order to understand the effect of current density, the concentration of the pollutant and the initial pH using different electrolytes with similar conductivity. The optimal operating conditions were achieved at 33.3 mA cm−2, 100 mg L−1 of BQ at pH 5.0 with 50 mM Na2SO4. Additionally, the evolution of short‐chain carboxylic acids of that test was followed over time in order to suggest a possible degradation route. The results were described and discussed in the light of the existing literature.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Electrochemical Technologies for Detecting and Degrading Benzoquinone Using Diamond Films

et al. 2019

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“…It could be an integration of the electrochemical method with physical, chemical, biological methods. The advantages of this integration are the effective removal of organic and inorganic pollutants [146], low operating costs [142], the increase of the performance of the electrodes and the reduction of the energy demand of the electrochemical method [147].…”

Section: Integration Of Electrochemical Treatment With Other Methodsmentioning

confidence: 99%

“…According to a previous study, even though the COD removal for PPW is categorized as low, the phenolic compound removal shows greater efficiencies. In addition, using graphite as the electrode material on PPW could achieve the complete removal of phenolic compounds and the 99.79% removal of COD [142].…”

Section: Nuts Processing Wastewatermentioning

confidence: 99%

Recent Applications of the Electrocoagulation Process on Agro-Based Industrial Wastewater: A Review

et al. 2022

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Agro-based final discharge is one of the major contributors to wastewater in the world. It creates high demand for efficient treatment. The electrocoagulation process can be used for agro-based wastewater treatment. The performance of the electrocoagulation process is based on several parameters, including the electrode materials, electrolysis time, current density, and electrolyte support. Agro-based industrial wastewater (AIW) treatment processes depend on the characteristics of the wastewater. The removal of organic content from various sources of AIW can reach up to more than 80%. Some studies show that the performance of the electrochemical process can be increased using a combination with other methods. Those other methods include biological and physical treatment. The results of previous research show that organic content and color can be degraded completely. The relationship between the energy consumption and operating cost was analyzed in order to show the efficiency of electrocoagulation treatment.

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“…Our meticulous analysis of the literature established that hybrid approaches based on electrochemical and AOPs were effective at removing contaminants from synthetic wastewater (Zazou et al 2019;Chanikya et al 2021). Meanwhile, only a few studies have focused on real wastewater and industrial effluent utilizing hybrid electrochemical and AOPs (Valero et al 2017;da Costa et al 2019). Additionally, apart from the removal of contaminants from industrial effluent and wastewater, the hybrid process's EEC is critical from an economic standpoint.…”

Section: Introductionmentioning

confidence: 99%

Distillery industrial wastewater(DIW) treatment by the combination of sono(US), photo(UV) and electrocoagulation(EC) process

Asaithambi

Yesuf

Govindarajan

et al. 2022

Journal of Environmental Management

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A sequential process to treat a cashew-nut effluent: Electrocoagulation plus electrochemical oxidation

Cited by 18 publications

References 49 publications

Electrochemical Technologies for Detecting and Degrading Benzoquinone Using Diamond Films

Electrochemical Technologies for Detecting and Degrading Benzoquinone Using Diamond Films

Recent Applications of the Electrocoagulation Process on Agro-Based Industrial Wastewater: A Review

Distillery industrial wastewater(DIW) treatment by the combination of sono(US), photo(UV) and electrocoagulation(EC) process

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