Preliminary Study of Electrodialysis with Model Salt Solutions and Industrial Wastewater

Шестаков, К. В.; Firpo, Raffaella; Bottino, A.; Comite, Antonio

doi:10.1007/978-3-319-58421-8_103

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…These wastewaters contain high concentrations of heavy metals, such as copper, nickel, zinc, chromium, or silver [91][92][93], which can be recovered. In fact, the metal removal percentage from synthetic wastewater solutions via electrodialysis can obtain values above 99% when optimal conditions are applied [94], although the complex composition of real wastewater streams implied lower metal removal percentages [95]. The influence of the main process variables, such as applied voltage, membrane properties and feed flow rate, concentration, and temperature, has been deeply investigated [96].…”

Section: Electrodialysismentioning

confidence: 99%

Innovative Membrane Technologies for the Treatment of Wastewater Polluted with Heavy Metals: Perspective of the Potential of Electrodialysis, Membrane Distillation, and Forward Osmosis from a Bibliometric Analysis

Carmona

Abejón

2023

Membranes

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A bibliometric analysis, using the Scopus database as a source, was carried out in order to study the scientific documents published up to 2021 regarding the use of electrodialysis, membrane distillation, and forward osmosis for the removal of heavy metals from wastewater. A total of 362 documents that fulfilled the search criteria were found, and the results from the corresponding analysis revealed that the number of documents greatly increased after the year 2010, although the first document was published in 1956. The exponential evolution of the scientific production related to these innovative membrane technologies confirmed an increasing interest from the scientific community. The most prolific country was Denmark, which contributed 19.3% of the published documents, followed by the two main current scientific superpowers: China and the USA (with 17.4% and 7.5% contributions, respectively). Environmental Science was the most common subject (55.0% of contributions), followed by Chemical Engineering (37.3% of contributions) and Chemistry (36.5% of contribution). The prevalence of electrodialysis over the other two technologies was clear in terms of relative frequency of the keywords. An analysis of the main hot topics identified the main advantages and drawbacks of each technology, and revealed that examples of their successful implementation beyond the lab scale are still scarce. Therefore, complete techno-economic evaluation of the treatment of wastewater polluted with heavy metals via these innovative membrane technologies must be encouraged.

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Section: Electrodialysismentioning

confidence: 99%

Innovative Membrane Technologies for the Treatment of Wastewater Polluted with Heavy Metals: Perspective of the Potential of Electrodialysis, Membrane Distillation, and Forward Osmosis from a Bibliometric Analysis

Carmona

Abejón

2023

Membranes

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“…При электрохимическом мембранном разделении коэффициент задержания находится в линейной зависимости от плотности тока, однако отмечается различное поведение кривых R(i) для прианодных и прикатодных мембран, что может быть вызвано «блокировкой» пор последних за счет отвода основной группы ионов [17,18].…”

Section: результаты и их обсуждениеunclassified

Efficiency of electrochemical membrane cleaning of process solutions from copper sulphate and trisodium phosphate

Абоносимов

Лазарев

Kotenev

et al. 2019

Izv.VUZ. Tsvet. Met.

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The paper considers the potential practical application of an electrochemical membrane method in the process of copper sulfate and trisodium phosphate removal from industrial water. The research objects were process solutions containing copper sulfate and trisodium phosphate and semipermeable polymeric membranes with various selective permeability characteristics. The study covers the effect that the transmembrane parameters of electromembrane separation have on the main kinetic characteristics of MGA-95P and OPM-K membranes in the process of copper smelting production water treatment. Approximation expressions were obtained to calculate membrane rejection rate depending on the physicochemical basis of the semipermeable membrane polymer, transmembrane pressure as well as process solution concentration and temperature. Empirical coefficients were determined to calculate and predict rejection rate values that can be used in the design of laboratory, pilot and industrial units used in the separation, treatment and concentration of industrial and waste water. The mathematical model of mass transfer was developed for electrochemical membrane separation taking into account assumptions made based on the solutions of the Nernst—Planck and Poisson—Boltzmann equations. This model allows for process physical description and calculations of concentration fields in the intermembrane channel and concentration changes in permeate and retentate lines. The mathematical model was checked for adequacy by comparing experimental data on retention rate with theoretical values where discrepancies between the experimental and theoretical data were within the limits of the experimental error and the error of calculated values.

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“…The latter usually adopts separation and oxidation processes, including physical methods (such as extraction, recrystallization, resin exchange, etc.) [2][3][4][5], chemical methods (such as advanced oxidation processes (AOPs), oxidant oxidation, etc.) [3,4], and biological methods (such as halophilic organisms, etc.)…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic treatment and resource utilization of industrial waste salt for chlor-alkali electrolysis

Zhou

Zhou²,

Tang³

et al. 2023

J Appl Electrochem

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Pesticides, ne chemicals and many other chemical industries usually produce a large amount of waste solid salt which is detrimental to the environment when treated by burning and rigid land ll. In contrast to traditional disposal strategies, resource utilization of waste salt is bene cial for both the environment and economy.However, the current technique for the resource utilization of waste salt, such as nano ltration, is high-cost and hard to popularize. In this study, the photoelectrocatalytic treatment of waste salt obtained from the glyphosate industry and its utilization as a raw material for chlor-alkali electrolysis are proved feasible. The waste salt consists mainly of NaCl, with ~1.31 wt% of organic impurities. By virtue of photoelectrocatalytic treatment with a TiO 2 nanotube electrode, the percentage of the total organic carbon (PTOC) of the waste salt, which was prepared into the brine, can be reduced to 5*10 4 , with a removal ratio of 85%, and it is able to meet the standard of re ned brine in the chlor-alkali industry (PTOC<2*10 4 ) after further treatment. A study on the photoelectrocatalytic mechanism reveals that the main oxidative substances contributing to the degradation are holes (h ) and chlorine active substances other than Cl• under the condition of high Cl concentration. The organic impurities in the waste salt are poisonous to both the electrode and membrane in the process of chloralkali electrolysis, leading to an increase in the voltage. With photoelectrocatalytic treatment, most of the organic impurities can be removed so that the waste salt can be utilized as a raw material for chlor-alkali electrolysis.

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Preliminary Study of Electrodialysis with Model Salt Solutions and Industrial Wastewater

Cited by 6 publications

References 3 publications

Innovative Membrane Technologies for the Treatment of Wastewater Polluted with Heavy Metals: Perspective of the Potential of Electrodialysis, Membrane Distillation, and Forward Osmosis from a Bibliometric Analysis

Innovative Membrane Technologies for the Treatment of Wastewater Polluted with Heavy Metals: Perspective of the Potential of Electrodialysis, Membrane Distillation, and Forward Osmosis from a Bibliometric Analysis

Efficiency of electrochemical membrane cleaning of process solutions from copper sulphate and trisodium phosphate

Photoelectrocatalytic treatment and resource utilization of industrial waste salt for chlor-alkali electrolysis

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