Acid Orange 52 Dye Degradation Efficiency by Electrocatalytic Method

Zhao, Hui; Zhong, Heng; Sun, Lei; Xia, Dongsheng; Nevsky, Alexander V.

doi:10.6060/tcct.20186103.5674

Cited by 3 publications

(5 citation statements)

References 4 publications

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“…As it was shown by us earlier [13], that when Acid Orange 52 simulated dye wastewater was treated by electrocatalytic technique under optimal conditions (Cdye = 100 mg/L, U = 20 V, pH = 6, t = 50 min) with catalyst A, the decolorization treatment effect was 95% in visible part of light spectrum (464 nm) and 38.6% in ultraviolet part (270 nm), respectively. And then this dye wastewater has been treated further by the photocatalytic method.…”

Section: Resultsmentioning

confidence: 65%

“…The characteristic absorption peak degradation speed is in order 464 nm>270 nm. As it was discussed earlier [13], the electrocatalytic reaction first destroys the conjugated system of two benzene rings and -N=N-, resulting in obvious decoloration of the solution. Then the benzene ring structure is destroyed in the course of photocatalytic process.…”

Section: The Effect Of Different Reaction Conditions On Photocatalytimentioning

confidence: 75%

“…The appliance for electrocatalytic degradation study and methodical peculiarities were described in our work [13]. The experimental facility for photocatalytic degradation study, as shown in Fig.…”

Section: Equipmentmentioning

confidence: 99%

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Acid Orange 52 Dye Degradation by Electrocatalytic Plus Photocatalytic Technique and Intermediates Detection

Zhao¹,

Zhong²,

Sun³

et al. 2018

IVUZKKT

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The degradation efficiency of Acid Orange 52 dye in an aqueous solutions using the combination of electrocatalytic and photocatalytic processes has been studied. Electrocatalytic and photocatalytic methods in practice reckon among advanced oxidation processes (AOPs). The effect of catalyst B dosage and irradiarion time on the rate of mentioned dye degradation was studied in the photocatalytic process. It was shown, that when Acid Orange 52 simulated dye wastewater was treated by electrocatalytic technique under optimal conditions with catalyst A, the decolorization treatment effect was 95 % in visible part of light spectrum (464 nm) and 38.6 % in ultraviolet part (270 nm), respectively. When the combined electrocatalytic-photocatalytic technique was processed with catalysts A and B, the color removal rate of dye could reach 99.3% (464 nm) and 91.5% (270 nm), respectively. The large amount of products of small mole weight was formed in the course of oxidation reaction. Moreover, the obtained values of chemical oxygen demand (COD) and total organic carbon (TOC) witnessed, that the combination of electrocatalytic and photocatalytic processes could significantly improve the biodegradability of dye as a whole．It was shown, that the removal rate of COD and TOC, respectively, were 54.3% and 72.8%. The reaction intermediates were determined by electrospray ionization-mass spectrometry (ESI-MS) analysis, and as a result, the probable degradation mechanism (pathway) has been proposed. The results of the work may be useful as theoretical bases for designing effective resource-saving, technically efficient and economically sound wastewater treatment systems, containing hardly biodegradable azo dyes.Forcitation:Zhao H., Zhong H., Sun L., Xia D., Nevsky A.V. Acid Orange 52 dye degradation by electrocatalytic plus photocatalytic technique and intermediates detection. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 4-5. P. 111-118

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Section: Resultsmentioning

confidence: 65%

Section: The Effect Of Different Reaction Conditions On Photocatalytimentioning

confidence: 75%

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Acid Orange 52 Dye Degradation by Electrocatalytic Plus Photocatalytic Technique and Intermediates Detection

Zhao¹,

Zhong²,

Sun³

et al. 2018

IVUZKKT

Self Cite

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“…The rate of the contaminants concentration reduction, in all probability, submits to the secondorder equation. The destruction degree of individual criterial contaminants and the investigated sewage's electro-, photo-catalytic purification efficiency in general are within 80-90 % [20,21].…”

Section: The Design Of Repeatedly-serial Water Integrated Chemical Prmentioning

confidence: 91%

Scientific and Technological Bases for Design of Industrial Enterprise’s Resource-Saving Water Management Systems

Nevsky¹,

Kashina²,

Xia³

et al. 2018

W&E

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Introduction: the conceptual regulations of the theory of sustainable socio-economic development provide the creation of resource-saving environmental friendly production, the basis of which are the effectively operating resource-saving water-use chemical processes (WUCP) of industrial plants. So, the objective of this investigation was the development of the designing methodology for scientific-reasonable resource-saving chemical processes of water management system for textile enterprises, which use the basic dyeing-finishing technology of cloth. Methods and materials: the thermodynamic exergy and thermodynamic water pinch methods of synthesis of resource-saving WUCP of industrial plants have been used and refined upon by us. The efficiency of proposed wastewater purification techniqueselectrocatalytic destruction, photocatalytic destruction, catalytic destruction by hydrogen peroxide, coagulation, clarification filtration, magnetic treatment was studied on model and real effluents. The metal oxides were used as catalysts. The special eperimental technique for development of technology of heavy metals ions utilization as useful products, such as mineral pigments, has been proposed. Results: a seven-steps scheme was investigated for project design: 1) the source data gathering: environmental-oriented analysis (inventory) of industrial enterprise's technology; 2) the design of integrated resource-saving water management system of industrial enterprise; 3) the design of repeatedly-serial water integrated chemical process system of industrial enterprise's shops (process lines); 4) the development of wastewater purification techniques; 5) the development of intelligence (computer) system of resource-saving water management system of industrial enterprise; 6) the technological risk assessment and safety management system; 7) the estimation of ecologic and economic efficiency of the project. Conclusion: the methodology of designing of resource-saving WUCP of textile enterprises has been developed. The functional diagram of resource-saving WUCP of dyeing-finishing production of textile plant has been proposed. The structure of intelligence system application and software of resource-saving WUCP designing and operation has been developed. Wastewater purification techniques have been investigated. The electrocatalytic plus photocatalytic destruction and coagulation methods are proved to be most perspective in practice of sewage treatment. The basic technical-economic parameters of the project were estimated.Keywords: methodology of designing water management systems, water-use technological processes, thermodynamic exergy method, thermodynamic water pinch method, wastewater purification techniques, electrocatalytic metod, technological risk, ecologic-economic effectiveness. АннотацияВведение: концептуальные положения теории устойчивого социально-экономического развития предусматривают создание ресурсосберегающего экологически безопасного производства, основой которого служат эффективно действующие ресурсосберегающие водо...

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“…Over the last decade, physical-chemical techniques, such as electrochemical treatment, photochemical method, adsorption, and biodegradation, were established to remove dyes from wastewaters [15][16][17][18]. Among these, adsorption has proved to be more advantageous over others due to its effectiveness and economy.…”

Section: Introductionmentioning

confidence: 99%

Isotherm, Thermodynamics, and Kinetics of Methyl Orange Adsorption onto Magnetic Resin of Chitosan Microspheres

et al. 2022

IJMS

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Severe environmental pollution problems arising from toxic dyestuffs (e.g., methyl orange) are receiving increasing attention. Therefore, dyes’ safe removal has become a research hotspot. Among the many physical–chemical removal techniques, adsorption using renewable biological resources has proved to be more advantageous over others due to its effectiveness and economy. Chitosan is a natural, renewable biopolymer obtained by deactivated chitin. Thus, the magnetic resin of chitosan microspheres (MRCM), prepared by reversed-phase suspension cross-linking polymerization, was used to remove methyl orange from a solution in a batch adsorption system. The main results are as follows: (1) The results of physical and swelling properties of MRCM indicated that MRCM was a type of black spherical, porous, water-absorbing, and weak alkali exchange resin, and it had the ability to adsorb methyl orange when it was applied in solutions above pH 2.0. (2) In batch adsorption studies, the maximum adsorption capacity was obtained at pH 5; the adsorption equilibrium time was 140 min; and the maximum adsorption was reached at 450 mg/L initial concentration. (3) Among the three isotherm adsorption models, Langmuir achieved the best fit for the adsorption of methyl orange onto MRCM. (4) The adsorption thermodynamics indicated that the adsorption was spontaneous, with increasing enthalpy, and was driven by the entropy. (5) The pseudo-second-order kinetics equation was most suitable to describe the adsorption kinetics, and the adsorption kinetics was also controlled by the liquid–film diffusion dynamics. Consequently, MRCM with relatively higher methyl orange adsorption exhibited the great efficiency for methyl orange removal as an environment-friendly sorbent. Thus, the findings are useful for methyl orange pollution control in real-life wastewater treatment applications.

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Acid Orange 52 Dye Degradation Efficiency by Electrocatalytic Method

Cited by 3 publications

References 4 publications

Acid Orange 52 Dye Degradation by Electrocatalytic Plus Photocatalytic Technique and Intermediates Detection

Acid Orange 52 Dye Degradation by Electrocatalytic Plus Photocatalytic Technique and Intermediates Detection

Scientific and Technological Bases for Design of Industrial Enterprise’s Resource-Saving Water Management Systems

Isotherm, Thermodynamics, and Kinetics of Methyl Orange Adsorption onto Magnetic Resin of Chitosan Microspheres

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