Treatment of textile wastewater by a hybrid ultrafiltration/electrodialysis process

Lafi, Ridha; Gzara, Lassâad; Lajimi, Ramzi Hadj; Hafiane, Amor

doi:10.1016/j.cep.2018.08.010

Cited by 144 publications

(40 citation statements)

References 46 publications

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“…However, color was decreased dramatically during ozonation (92.59 and 97.27 times). The removal rate of the conductivity with new RO membranes was higher than those during UF-electrodialysis process [22] and UF ceramic membrane [21], and close to that during UF-diafiltration process [19].…”

Section: Overall Efficiencysupporting

confidence: 52%

“…Lara et al [21] used a UF ceramic membrane for the removal of a reactive dye, Reactive Black 5, which was removed by up to 95.2%. Lafi et al [22] pointed out that primary treated textile wastewater with combined UF-electrodialysis presents similar parameter values to those of normal feed water. Amar et al [1] researched the integrating of activated sludge treatment with either nanofiltration (NF) or reverse osmosis (RO) to reclaim wastewater from denim fabric production.…”

Section: Introductionmentioning

confidence: 99%

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Textile Wastewater Treatment for Water Reuse: A Case Study

Yin

Qiu²,

Qian³

et al. 2019

Processes

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The reduced natural waters and the large amount of wastewater produced by textile industry necessitate an effective water reuse treatment. In this study, a combined two-stage water reuse treatment was established to enhance the quality and recovery rate of reused water. The primary treatment incorporated a flocculation and sedimentation system, two sand filtration units, an ozonation unit, an ultrafiltration (UF) system, and a reverse osmosis (RO) system. The second treatment included an ozonation unit, a sand filtration unit, and UF and RO systems. The color removal rate increased with the increasing ozone dosage, and the relational expression between the ozone dosage and color removal rate was fitted. Ozonation greatly reduced the color by 92.59 and 97.27 times during the primary and second ozonation stages, respectively. RO had the highest removal rate. The combined processes showed good performance in water reuse treatment. The treated, reused water satisfied the reuse standard and surpassed the drinking water standard rates for chemical oxygen consumption (CODcr), color, NH3-N, hardness, Cl−, SO42−, turbidity, Fe3+, and Cu2+. The operating cost of reuse water treatment was approximately 0.44 USD·m−3.

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Section: Overall Efficiencysupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Textile Wastewater Treatment for Water Reuse: A Case Study

Yin

Qiu²,

Qian³

et al. 2019

Processes

View full text Add to dashboard Cite

show abstract

“…Membrane separation technology has been regarded as one of economically viable ways to mitigate the crisis about the water shortage, thanks to its low energy consumption, facile scale‐up of membrane module, and environmental sustainability . Among them, electrodialysis is one of efficient membrane separation processes, which plays an important role in brackish water desalination, organic solution purification, and municipal or industrial effluent treatment due to its flexibility, robustness, and broad range of applications …”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6] Among them, electrodialysis is one of efficient membrane separation processes, which plays an important role in brackish water desalination, organic solution purification, and municipal or industrial effluent treatment due to its flexibility, robustness, and broad range of applications. 5,[7][8][9][10][11] Electrodialysis technique is based on ion transportation through selective membranes driven by the electrical field. In an electrodialysis stack, cation-and anionexchange membranes (AEMs) are placed alternatively between the cathode and the anode commonly.…”

Section: Introductionmentioning

confidence: 99%

Ion transfer modeling based on Nernst–Planck theory for saline water desalination during electrodialysis process

Zhu

Yang²,

Gao

et al. 2020

Asia-Pacific J Chem Eng

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Electrodialysis, an efficient and environmental friendly separation technology, plays a significant role in water treatment. In order to reveal ion transfer mechanism and predict electrodialysis behavior, a mathematical model for steady transport of a binary electrolyte during the desalination process was developed. The Nernst–Planck, electroneutrality equations, and other hydrodynamic equations were coupled and solved with appropriate boundary conditions using the finite element method. This model is capable to predict the local ion concentration, electric potential, and ion flux in a rectangular electrodialysis unit. The effects of voltage drop (0.4–1.0 V), inlet velocity (0.03–0.06 m/s), and initial feed concentration (500–700 mol/m3) are investigated, which could provide valuable guidance for electrodialysis operation in the practical project. Moreover, this model is validated by comparing its simulation result with experimental data of electrodialysis, and it could predict the desalination of saline water accurately. Ion transfer modeling provides an effective way to study the transfer mechanism, estimate the effects of various parameters conveniently, and realize the target‐oriented operation optimization.

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“…The disposal of organic compounds from wastewater is one of the main issues of treatment. Recently, there has been significant interest in using advanced oxidative processes to solve this problem [1][2][3][4][5]. Of interest are developments based on the use of nonthermal plasma in contact with a liquid, as reflected in recent papers [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Catalytic/inhibitory effect of the joint presence of two dyes on its destruction by underwater plasma processes: a tool for optimization parameters of treatment

et al. 2019

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The underwater plasma was used for the destruction of two-dye mixture. The Direct Blue azo dye and xanthene dye of Rhodamine 6G used as the model pollutants. The concentration of one of them is varied for modeling the processes in which one of the classes of the dye exceeded other dyes. The catalytic/inhibitory effect of the joint presence of two dyes is studied. The effect of initial temperature and the role of H 2 O 2 in the mechanism of destruction were also investigated. It was established that the processes of decay of organic dyes proceed through the stages of the formation of intermediate products, which are catalysts or inhibitors of further degradation processes. An increase in the temperature of the solution has almost no effect on the degree of decolorization of the solution of the dye mixture. It is established that the destruction of Direct Blue 1 occurs under the action of hydrogen peroxide or HO 2 radicals, while Rhodamine 6G is destroyed by interaction with hydroxide radicals. The comparison of energy yield values with published data showed that underwater plasma is an effective method for removing the organic dyes from wastewater.

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Treatment of textile wastewater by a hybrid ultrafiltration/electrodialysis process

Cited by 144 publications

References 46 publications

Textile Wastewater Treatment for Water Reuse: A Case Study

Textile Wastewater Treatment for Water Reuse: A Case Study

Ion transfer modeling based on Nernst–Planck theory for saline water desalination during electrodialysis process

Catalytic/inhibitory effect of the joint presence of two dyes on its destruction by underwater plasma processes: a tool for optimization parameters of treatment

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