Combined membrane bioreactor and electrochemical oxidation using Ti/PbO2 anode for the removal of carbamazepine

García-Gómez, Celestino; Drogui, Patrick; Seyhi, Brahima; Gortáres‐Moroyoqui, Pablo; Buelna, Gerardo; Estrada-Alvgarado, M.I.; Álvarez, Luis H.

doi:10.1016/j.jtice.2016.04.024

Cited by 52 publications

(19 citation statements)

References 48 publications

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“…Drugs contained in wastewater without electrochemical pretreatment was persistent in the biological process and encouraged bulking formation. García-Gómez et al [118] proved membrane bioreactor (MBR) high capacity to remove COD and low capacity for degradation (20%) of carbamazepine after 120 days, which presumably suggests that given the weak degradation and carbamazepine was not toxic to microorganisms. The EOP, on the other hand, was able to degrade carbamazepine completely.…”

Section: Combined Systemsmentioning

confidence: 99%

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Dao

Yang

Chen

et al. 2020

Water

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Due to various potential toxicological threats to living organisms even at low concentrations, pharmaceuticals and personal care products in natural water are seen as an emerging environmental issue. The low efficiency of removal of pharmaceuticals and personal care products by conventional wastewater treatment plants calls for more efficient technology. Research on advanced oxidation processes has recently become a hot topic as it has been shown that these technologies can effectively oxidize most organic contaminants to inorganic carbon through mineralization. Among the advanced oxidation processes, the electrochemical advanced oxidation processes and, in general, electrochemical oxidation or anodic oxidation have shown good prospects at the lab-scale for the elimination of contamination caused by the presence of residual pharmaceuticals and personal care products in aqueous systems. This paper reviewed the effectiveness of electrochemical oxidation in removing pharmaceuticals and personal care products from liquid solutions, alone or in combination with other treatment processes, in the last 10 years. Reactor designs and configurations, electrode materials, operational factors (initial concentration, supporting electrolytes, current density, temperature, pH, stirring rate, electrode spacing, and fluid velocity) were also investigated.

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Section: Combined Systemsmentioning

confidence: 99%

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Dao

Yang

Chen

et al. 2020

Water

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“…In this reactor, Ti/PbO 2 (5.5 cm × 4 cm × 2 mm) and graphite felt (5.5 cm × 5 cm × 3 mm) were used as anode and cathode, respectively. The electrodes were selected owing to their unique combination of properties including electrical conductivity, high chemical stability, low cost, excellent electro‐catalytic performance and production of more reactive species . The distance between cathode and anode was fixed at 1 cm.…”

Section: Methodsmentioning

confidence: 99%

“…The electrodes were selected owing to their unique combination of properties including electrical conductivity, high chemical stability, low cost, excellent electro-catalytic performance and production of more reactive species. 33,34 The distance between cathode and anode was fixed at 1 cm. Iron-coated nickel foam, as particle electrode, was added between the anode and the cathode as a floating bed.…”

Section: Experimental Studiesmentioning

confidence: 99%

Optimization of the 3D electro‐Fenton process in removal of acid orange 10 from aqueous solutions by response surface methodology

Mohammadi

Alinejad

Khajeh

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND In recent decades, rapid population growth and industrial development have led to the release of toxic compounds into water resources. Several technologies have been proposed to address the problem, and among them, the 3D electro‐Fenton process has found great popularity due to its high efficiency and simple operation. In the 3D electro‐Fenton process, the type of particle electrode is one of the most important factors owing to its impact on the reduction of energy consumption and generation of reactive species. In the present study, the optimization of the 3D electro‐Fenton process coupled with iron‐coated nickel foam (NF‐Fe), as a new particle electrode, in the removal of acid orange 10 was investigated using response surface methodology (RSM). RESULTS The RSM results showed that the quadratic model has a high R2 and high F‐value based on ANOVA analysis. The optimum efficiency of dye removal (99.15%) was obtained at pH 5.6, an NF‐Fe dosage of 0.68 g L−1, a time of 34.6 min, and current density of 23.62 mA cm−2. Comparative tests showed the high efficiency of the 3D electro‐Fenton process compared to other electrochemical systems. Quenching experiments demonstrated the production of different reactive species in the 3D process. The stability experiment proved that the NF‐Fe has a high potential to improve the long‐term degradation of dye. CONCLUSIONS Due to its high efficiency, production of more reactive species and excellent stability of the NF‐Fe electrode, this 3D electro‐Fenton process is an excellent option for removal of dye from aqueous solutions. © 2019 Society of Chemical Industry

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“…Then, ·OH will degrade pollutants through oxidation to form oxidized pollutants. The mechanism of ·OH generation and pollutant electroxidation are shown in Equation 5 and Equation 6 [39].…”

Section: Fundamental Of Embrmentioning

confidence: 99%

“…As shown in Table 1, stainless steel, platinized titanium, platinum, graphite, lead oxide (PbO 2 ), and carbon are the most common inactive electrodes that employed in EMBR. However, PbO 2 is the most attractive electrode owing to its excellent electrical conductivity, favorable over potential, high chemical inertness, low cost, and outstanding electrocatalytic performance [39]. Wang et al [50] The pioneer work on EMBR study based on electrophoresis and electrochemical principle was initiated by Chen et al [22] where they first applied continuous DC in submerged EMBR to treat urban sewage water.…”

Section: Electrophoresis and Electrochemicalmentioning

confidence: 99%

An Overview of Electrically-enhanced Membrane Bioreactor (EMBR) for Fouling Suppression

Ho¹,

Teow²,

Ang³

et al. 2017

JESTR

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Membrane fouling is the major challenges that hinders the widespread application of membrane bioreactor (MBR). Recently, application of electricity in electrically-enhanced MBR (EMBR) to suppress membrane fouling has gained much attention among research communities. This paper presents an overview of developments on EMBR for fouling suppression in wastewater treatment. The flow of electricity has stimulated several electrokinetic processes including electrophoresis/electrochemical process, and electrocoagulation which are the major fouling suppression mechanisms employed in EMBR. In electrophoresis, the membrane fouling is suppressed by the increased electrorepulsive force between negatively-charged foulants and cathode membrane under the influence of an electric field. Besides, electric field also induces simultaneous electrochemical oxidation and reduction which generate chemicals to degrade pollutant in wastewater. On top of that, use of active anode is reminiscent of electrocoagulation which produces cation coagulants in EMBR that capable to neutralize charge of the foulants and promotes flocs formation. This increases flocs size and sedimentation rate thereafter reduces adhesion of foulants on the membrane surface. Lastly, bioelectricity generation of microbial fuel cell (MFC) integrated with MBR to attain self-sustained EMBR has been studied. Self-sustained EMBR combines the advantages of MFC and MBR in treating wastewater and energy recovery simultaneously. Overall, it is evidenced that MBR and electrokinetic processes have a synergetic enhancement effect in EMBR system.

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Combined membrane bioreactor and electrochemical oxidation using Ti/PbO2 anode for the removal of carbamazepine

Cited by 52 publications

References 48 publications

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Optimization of the 3D electro‐Fenton process in removal of acid orange 10 from aqueous solutions by response surface methodology

An Overview of Electrically-enhanced Membrane Bioreactor (EMBR) for Fouling Suppression

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