Experimental investigation of textile dyeing wastewater treatment using aluminium in electro coagulation process and Fenton’s reagent in advanced oxidation process

Kothai, A.; Sathishkumar, C.; Muthupriya, R.; Sankar, K.; Dharchana, R.

doi:10.1016/j.matpr.2020.07.094

Cited by 26 publications

(9 citation statements)

References 20 publications

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“…efficient treatment method. Electrocoagulation is usually used to treat textile wastewater [2], dairy wastewater [3] paper industry effluent [4], printing wastewater [5], metal finishing [6] and plating wastewater [7], pharmaceutical wastewater [8], etc.…”

Section: A D V a N C E D O N L I N E A R T I C L Ementioning

confidence: 99%

Electrochemical treatment of dye wastewater using nickel foam electrode

Muthumanickam

Saravanathamizhan

2021

J. Electrochem. Sci. Eng.

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Removal of dye from wastewater has been investigated using the electrocoagulation method. Batch experiment has been conducted to remove the color from synthetically prepared acid red 87dye wastewater. Stainless steel and nickel foam sheets are used as cathode and anode, respectively. The effect of some operating parameters, such as current density, initial dye concentration and supporting electrolyte concentration, on color removal has been studied. It can be observed from the present investigations that the nickel foam electrode effectively removes color from the wastewater. Nickel hydroxyl species formed during the operation and also, nickel (II) hydroxide flocs formed in a subsequent stage, trap colloidal precipitates and make solid-liquid separation easier during the flotation stage. These stages of electrocoagulation must be optimized to design an economically feasible process.

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Section: A D V a N C E D O N L I N E A R T I C L Ementioning

confidence: 99%

Electrochemical treatment of dye wastewater using nickel foam electrode

Muthumanickam

Saravanathamizhan

2021

J. Electrochem. Sci. Eng.

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“…Common advanced treatment methods include adsorption [13], air flotation [14], biological treatment [15], advanced oxidation [16], etc. Fenton oxidation technology is currently a hot topic in domestic and foreign research and is widely used [17][18][19]. The principle is that the hydroxyl radicals (•OH) produced in the reaction process could be used to oxidize the organic pollutants in the wastewater non-selectively, and then oxidatively decompose the refractory organic matter in the wastewater into CO 2 , H 2 O and other inorganic salts [20].…”

Section: Introductionmentioning

confidence: 99%

Study on Treatment of Organic Wastewater from Cutting Fluid by Electro-flocculation-Multiphase Fenton/Ultrasonic System

Wu¹,

Wei²,

Zhou³

et al. 2022

Pol. J. Environ. Stud.

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The composition of cutting fluid wastewater is complex, containing oil and various additives. Due to different production processes, various metal particles will be mixed, which has caused great difficulties in wastewater treatment. In this study, electro-flocculation-multiphase Fenton/ultrasound system was used to treat cutting fluid organic wastewater. Firstly, the demulsification pretreatment was carried out by electroflocculation method, which achieved 97.4% COD cr removal efficiency. Afterwards, a multiphase Fenton/ultrasonic system was used for advanced treatment. By comparing the SEM results, BET results, XRD results and COD cr removal efficiency of the catalysts prepared by different supports and methods, CuO/CeO 2 catalyst prepared by the deposition precipitation method was used in this experiment. The dissolution rate of copper in the catalyst CuO/CeO 2 was only 1.29% after 4 hours of reaction. After 5 times of recovery, the recovery rate of the catalyst was still 95%, and the removal efficiency of COD cr was 29.8%. It proved that the catalyst CuO/CeO 2 had good stability. Compared with a separate multiphase Fenton or ultrasound system, the multiphase Fenton/ultrasonic system had a better processing effect. Under the conditions of an ultrasonic frequency of 800 KHz, a reaction time of 180 min, a catalyst dosage of 1.6 g/L, a hydrogen peroxide dosage of 0.5 mol/L, and an initial pH of 8, the multiphase Fenton/ultrasonic system could achieve 65% COD cr removal efficiency. This study found that electro-flocculation-multiphase Fenton/ultrasonic system could finally achieve 99.09% COD cr removal efficiency.

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“…Thus, it is challenging to meet the new wastewater discharge standards (Table 1) due to the residual dyes 3 . Different technologies and technical combinations have been used to study the advanced treatment of printing and dyeing wastewater (Table 2), mainly for low‐concentration printing and dyeing wastewater treated by the previous process (mainly the effluent of the secondary sedimentation tank after biochemical treatment), such as activated carbon adsorption, advanced oxidation, processes such as membrane treatment, or a combination of these processes 4–7 . However, the existing technical processes generally have problems such as high‐processing costs, complicated operations, and unstable operations 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Hydrogel‐biochar composites for removal of methylene blue: Adsorption performance, characterization, and adsorption isotherm, kinetics, thermodynamics analysis

Wang¹,

Zheng²,

Zong³

et al. 2022

J of Applied Polymer Sci

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Low‐concentration organic dye wastewater severely threatens the growth and reproduction of animals and plants, as well as the survival and development of human beings and the environment. Although versatile hydrogel composites have been prepared owing to their excellent adsorption performance, the high‐removal efficiency and fast adsorption rate are still two crucial problems related to practical applications. Herein, xanthan gum‐g‐poly (acrylic acid‐co‐acrylamide)/biochar composite hydrogels with high‐removal efficiency and fast adsorption rate of methylene blue (MB) are synthesized using sodium dodecyl sulfate as a pore‐foaming agent. The composite hydrogels exhibit rough and porous three‐dimensional structures, which can make the internal active adsorption sites to be fully exposed and facilitate the MB diffusion process. MB's removal efficiency can reach 96.64% within 30 minutes, which is almost the first time that a biochar‐contained hydrogel could show superior removal efficiency of more than 95% in such a short adsorption time. The factors affecting the adsorption performance are studied comprehensively. Langmuir and pseudo‐second‐order models fit the adsorption process well. Moreover, the MB removal rate still exceeds 80% after eight cycles, which is also a vital indicator for practical treatment. Adsorption mechanism analysis shows that the synergistic effect among biochar, xanthan gum, and polymer chains and the porous structure improve the adsorption performance of the composite hydrogels. The proposed hydrogel‐biochar composites with high‐removal efficiency and adsorption rate are highly promising as an alternative adsorbent for advanced printing and dyeing wastewater treatment.

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Experimental investigation of textile dyeing wastewater treatment using aluminium in electro coagulation process and Fenton’s reagent in advanced oxidation process

Cited by 26 publications

References 20 publications

Electrochemical treatment of dye wastewater using nickel foam electrode

Electrochemical treatment of dye wastewater using nickel foam electrode

Study on Treatment of Organic Wastewater from Cutting Fluid by Electro-flocculation-Multiphase Fenton/Ultrasonic System

Hydrogel‐biochar composites for removal of methylene blue: Adsorption performance, characterization, and adsorption isotherm, kinetics, thermodynamics analysis

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