Electrosorption for organic pollutants removal and desalination by graphite and activated carbon fiber composite electrodes

Zhou, Guizhong; Li, W.; Wang, Z.; Wang, X.; Li, S.; Zhang, D.

doi:10.1007/s13762-015-0811-4

Cited by 14 publications

(3 citation statements)

References 51 publications

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“…For a long time, the development of the technology of capacitive deionization of water was constrained by the lack of materials with a sufficiently high developed inner surface. However, in recent decades (in the period from 1994 to 2021), with the development of technologies for the production of mesoporous carbons, materials with an active surface of 800-2,000 m 2 /g were created (for example, the design of aerogels at the Livermore National Laboratory), which are described in work [11], which led to the increased interest in the capacitive deionization of water.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Designing capacitive deionization module for water treatment systems at car washers

Kudin

Taran

Bazhynov

et al. 2021

EEJET

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It is impossible to effectively use water with a high salt content at car washes. In many places, access to water with a high salt content is almost unlimited but its utilization requires deionization. For this purpose, several methods are used, the main of which are reverse osmosis, electrodialysis, ion exchange methods, and distillation. However, they have significant drawbacks. Recently, the technology of capacitive deionization of water has been widely used, based on the removal of salt ions from the solution during the charge/discharge of "double" electric layers of carbon materials with a significant active surface (800‒2,000 m2/g). Theoretically, this process should be more energy efficient by using a low potential voltage (1–2 V). This paper considers the interrelation of physical parameters that affect the process of capacitive deionization of water. The dependences of voltage drop on serial internal resistance on different concentrations of sodium chloride and the distance between electrodes for electrodes based on the material SAUT-1S (Belarus) have been investigated. It is shown that the main contribution to the sequential internal resistance is introduced by the resistance of the electrolyte. As the distance between the electrodes increases, the voltage drop on the serial internal resistance increases linearly. A decrease in the concentration of ions leads to a decrease in the conductivity of the solution, which causes an increase in energy consumption and a decrease in the efficiency of sorption. It has been demonstrated that the voltage drop at the serial internal resistance when the voltage on the electrodes is limited, which is set in order to avoid the transition of the electrode charging mode to the electrolysis of water, causes a significant drop in the efficiency of the capacitive deionization process

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Designing capacitive deionization module for water treatment systems at car washers

Kudin

Taran

Bazhynov

et al. 2021

EEJET

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“…Actually, a lot of research has been done to treat wastewater in the pharmaceutical industry and liquid waste from the pesticide industry, one of which is by the electrolysis method. Electrolysis methods such as those conducted by [7] using graphite and composite electrodes as electrodes to remove organic pollutants in the water medium and desalination of water [7]. Electrocoagulation methods have also been tried to reduce components of organic waste.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Effect of Iron, Aluminum and Zinc (as Anoda) on Metformin Deconcentration and Aspirin Deconcentration with Electrolysis Method

Suhartana¹,

Purwanto²,

Darmawan³

2020

Proceedings of the Proceedings of the 13th International Interdisciplinary Studies Seminar, IISS 2019, 30-31 October 2019, Mala

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Aspirin and metformin are drugs that function as an analgesic-antiseptic, antiinflammatory, and antiplatet. Ferrous metal, aluminum metal and zinc metal are easily found and often used by the public. This study aims to reduce the two drugs by electrolysis method, using three different metals, namely iron metal, aluminum metal and zinc metal as an anode. The success of the electrolysis process was seen with a decrease in the sample COD index. In situations without the addition of electrolytes using ferrous metals, aluminum metals and zinc metals the COD index decreases in the sample very low (10-15%). This study aims to increase the success of the electrolysis process, by adding various types of electrolytes, such as acetic acid (weak electrolytes), sodium chloride (strong electrolytes), sodium chloride and fenton reagents. The addition of electrolytes can significantly increase electrolysis results. Interactions between drugs during electrolysis are tracked with possible changes in the chromophore group (with UV-Visible spectrum) and functional groups (with FTIR spectrum) of the sample. From the research data obtained information that there is a decrease and shift in the UV-Visible spectrum and changes in the functional group after the electrolysis process occurs. The electrolysis process of Metformin and Aspirin occurs optimally at a distance of 1 cM (in iron, aluminum and zinc as an anode and carbon as an anode) and a processing time of 30 minutes. The voltage used in the electrolysis process of Metformin is optimal at 3 volts and 9 volts in the Aspirin electrolysis process (in iron and aluminum as an anode and carbon as an anode). The best electrolysis percentage is obtained, after adding NaCl solution and Fenton's reagent in the range of 65-70%.

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“…Previous studies have shown that electrodes made of a carbonaceous material provide high efficiency in the degradation of pollutants. [22][23][24][25] There have been several studies in the literature reporting the used of graphite, 13,26,27 activated C fibres, [28][29][30][31][32] C felts [33][34][35] and C nanotubes 36,37 as anode in wastewater treatment (see Supporting information Table S1). Previously, Feng et al 38 provided in-depth analysis of carbonaceous electrode performance and its specific challenges in wastewater treatment applications.…”

Section: Introductionmentioning

confidence: 99%

Exploring the potential of highly efficient graphite/chitosan–PVC composite electrodes in the electrochemical degradation of Reactive Red 4

Halim

Adnan

Lahuri

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Previous reported studies revealed that composite electrodes are effective and suitable for wastewater treatment applications owing to their high porosity and increased electrochemical active area. However, the critical challenges to the wider adoption of composite electrodes for environmental applications are the need to reduce the cost of electrode materials, and to improve both their long-term stability and electrocatalytic performance. This study aims to investigate the efficiency and stability of low-cost graphite/chitosan-polyvinyl chloride (C/Chi-PVC) composite electrodes for Reactive Red 4 (RR4) degradation. Toxicity of the treated RR4 wastewater also was investigated using a seed germination test.RESULTS: A cyclic voltammetry study conducted revealed that C 49 /Chi 21 -PVC 30 (49% C, 21% Chi, 30% PVC) showed better electrochemical behaviour for hypochlorous ion (OCl − ) formation, which is responsible for RR4 degradation via indirect electrochemical reaction. Owing to the synergistic effect of both materials, high colour, total organic carbon (TOC) and chemical oxygen demand (COD) removals of 99.61%, 89.68% and 76.35%, respectively, were achieved with less electrode damage at optimum electrolysis parameters. The treated RR4 solution displayed low toxicity after 14 days of exposure to the water sample. The electrode stability in the aggressive OCl − solution was studied by characterization of fresh and used electrodes using field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy (FESEM-EDX). This showed no significant difference in surface roughness and elemental composition; the reusability test confirmed that the electrode can be applied in repeated electrolysis.CONCLUSION: Overall, the fabricated electrode in this study showed high efficiency with robust and durable characteristics for wastewater treatment applications.

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Electrosorption for organic pollutants removal and desalination by graphite and activated carbon fiber composite electrodes

Cited by 14 publications

References 51 publications

Designing capacitive deionization module for water treatment systems at car washers

Designing capacitive deionization module for water treatment systems at car washers

Effect of Iron, Aluminum and Zinc (as Anoda) on Metformin Deconcentration and Aspirin Deconcentration with Electrolysis Method

Exploring the potential of highly efficient graphite/chitosan–PVC composite electrodes in the electrochemical degradation of Reactive Red 4

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