Neutralization of Industrial Water by Electrodialysis

Petrov, Oleksandr; Iwaszczuk, Natalia; Kharebava, Tina; Bejanidze, Irina; Pohrebennyk, Volodymyr; Nakashidze, Nunu; Petrov, Anton

doi:10.3390/membranes11020101

Cited by 5 publications

(4 citation statements)

References 30 publications

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“…The initial pH of BTTWW was adjusted to 3, 5, 7, and 8 to evaluate the pH effect. Petrov et al [15] have investigated the effect of the feed solution pH value of the industrial wastewater on the BPMED process. Their results have shown that above pH 11.0 and below 3.0, even at high current densities (i > 20 A/m 2 ), the BPMED process did not provide efficient treatment.…”

Section: Bipolar Membrane Electrodialysis Processmentioning

confidence: 99%

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Recovery of Biologically Treated Textile Wastewater by Ozonation and Subsequent Bipolar Membrane Electrodialysis Process

Yüzer

Selçuk

2021

Membranes

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The Bipolar Membrane Electrodialysis process (BPMED) can produce valuable chemicals such as acid (HCl, H2SO4, etc.) and base (NaOH) from saline and brackish waters under the influence of an electrical field. In this study, BPMED was used to recover wastewater and salt in biologically treated textile wastewater (BTTWW). BPMED process, with and without pre-treatment (softening and ozonation), was evaluated under different operational conditions. Water quality parameters (color, remaining total organic carbon, hardness, etc.) in the acid, base and filtrated effluents of the BPMED process were evaluated for acid, base, and wastewater reuse purposes. Ozone oxidation decreased 90% of color and 37% of chemical oxygen demand (COD) in BTTWW. As a result, dye fouling on the anion exchange membrane of the BPMED process was reduced. Subsequently, over 90% desalination efficiency was achieved in a shorter period. Generated acid, base, and effluent wastewater of the BPMED process were found to be reusable in wet textile processes. Results indicated that pre-ozonation and subsequent BPMED membrane systems might be a promising solution in converging to a zero discharge approach in the textile industry.

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Section: Bipolar Membrane Electrodialysis Processmentioning

confidence: 99%

“…In addition, Readi et al [14] used bipolar membranes for internal pH control in the electrodialysis of amino acids. In another study, Petrov et al [15] applied the BPMED process to neutralize industrial effluents before being discharged. Furthermore, the BPMED process was used for energy-efficient malic acid production by Luo et al [16].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Biologically Treated Textile Wastewater by Ozonation and Subsequent Bipolar Membrane Electrodialysis Process

Yüzer

Selçuk

2021

Membranes

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“…Conventional wastewater decontamination technologies such as membrane filtration, adsorption, electrodeionization, precipitation, and electrodialysis suffer huge setbacks that include incomplete mineralization of pollutants, harmful by-product formation, and consumption of large amounts of energy [ 17 , 18 , 19 , 20 , 21 , 22 ]. In contrast, heterogeneous photocatalytic degradation of water-polluting OMPs employing different semiconductors under visible-light irradiation is promising, cost-effective, and eco-friendly [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Construction of Pt@BiFeO3 Xerogel-Supported O-g-C3N4 Heterojunction System for Enhanced Visible-Light Activity towards Photocatalytic Degradation of Rhodamine B

Usman

Ștefănescu

Matei

et al. 2023

Gels

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Synthetic organic pigments from the direct discharge of textile effluents are considered as colossal global concern and attract the attention of scholars. The efficient construction of heterojunction systems involving precious metal co-catalysis is an effective strategy for obtaining highly efficient photocatalytic materials. Herein, we report the construction of a Pt-doped BiFeO3/O-g-C3N4 (Pt@BFO/O-CN) S-scheme heterojunction system for photocatalytic degradation of aqueous rhodamine B (RhB) under visible-light irradiation. The photocatalytic performances of Pt@BFO/O-CN and BFO/O-CN composites and pristine BiFeO3 and O-g-C3N4 were compared, and the photocatalytic process of the Pt@BFO/O-CN system was optimized. The results exhibit that the S-scheme Pt@BFO/O-CN heterojunction has superior photocatalytic performance compared to its fellow catalysts, which is due to the asymmetric nature of the as-constructed heterojunction. The as-constructed Pt@BFO/O-CN heterojunction reveals high performance in photocatalytic degradation of RhB with a degradation efficiency of 100% achieved after 50 min of visible-light irradiation. The photodegradation fitted well with pseudo-first-order kinetics proceeding with a rate constant of 4.63 × 10−2 min−1. The radical trapping test reveals that h+ and •O2− take the leading role in the reaction, while the stability test reveals a 98% efficiency after the fourth cycle. As established from various interpretations, the considerably enhanced photocatalytic performance of the heterojunction system can be attributed to the promoted charge carrier separation and transfer of photoexcited carriers, as well as the strong photo-redox ability established. Hence, the S-scheme Pt@BFO/O-CN heterojunction is a good candidate in the treatment of industrial wastewater for the mineralization of organic micropollutants, which pose a grievous threat to the environment.

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“…Electrodialysis is one of the methods of membrane technology for the separation and purification of liquids [1][2][3][4][5]. According to the forecasts of the development of the world economy, membrane technology is regarded as the technology of the future [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes

et al. 2022

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The study of the electrical conductivity of ion-exchange membranes in equilibrium electrolyte solutions is of great importance for the theory of membrane processes, in particular for practical electrodialysis. The purpose of the work is to determine the electrical conductivity of industrial ion-exchange membranes MK-40 and MA-40, as well as their basis—granules of a bulk layer of industrial ion exchangers KU-2-8 and EDE-10p, by differential and modified contact methods in electrolyte solutions and the development of a new methodology that will give the values that are closest to the true ones; determination of the dependence of electrical membrane conductivity depending on the type of counterion and concentration equilibrium solution and granules of a bulk layer of ion exchangers on the volume fraction of a dry ion exchanger with different degrees of compaction. It is shown that the dependence of the electrical conductivity of diaphragms on the electrolyte concentration, according to theoretical ideas, disappears under compression. It has been experimentally established that the difference method gives lower values of electrical conductivity in the region of low concentrations. The data obtained by the contact method are in good agreement with the results obtained for compressed diaphragms. The membrane conductivity decreases with increasing ion size.

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Neutralization of Industrial Water by Electrodialysis

Cited by 5 publications

References 30 publications

Recovery of Biologically Treated Textile Wastewater by Ozonation and Subsequent Bipolar Membrane Electrodialysis Process

Recovery of Biologically Treated Textile Wastewater by Ozonation and Subsequent Bipolar Membrane Electrodialysis Process

Construction of Pt@BiFeO3 Xerogel-Supported O-g-C3N4 Heterojunction System for Enhanced Visible-Light Activity towards Photocatalytic Degradation of Rhodamine B

Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes

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