Design and testing of a pilot scale magnetic separator for the treatment of textile dyeing wastewater

Salinas, Tobías; Durruty, Ignacio; Arciniegas, Lorena; Pasquevich, G. A.; Lanfranconi, Matías; Orsi, Isabela; Álvarez, Vera A.; Bonanni, Pablo Sebastián

doi:10.1016/j.jenvman.2018.04.096

Cited by 33 publications

(11 citation statements)

References 39 publications

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“…A preliminary assessment of a pilot-scale magnetic separator demonstrated that magnetizable clays could be effectively used for the treatment of textile dyeing wastewater on magnetic drum separators (Salinas et al 2018 ). The magnetic drum separator had a rotating drum (external diameter=20 cm, depth=12.5 cm, and with an arrangement of fifty neodymium magnets of 5 × 2 × 0.5 cm on its inner side) mounted on a cylindrical plastic container by a metal shaft (Salinas et al 2018 ). The magnetic clay was separated from the drum by a plastic blade and recuperated in a plastic container (Salinas et al 2018 ).…”

Section: Developments With Magnetic Nanoadsorbents and Magnetic Separationmentioning

confidence: 99%

“…The magnetic drum separator had a rotating drum (external diameter=20 cm, depth=12.5 cm, and with an arrangement of fifty neodymium magnets of 5 × 2 × 0.5 cm on its inner side) mounted on a cylindrical plastic container by a metal shaft (Salinas et al 2018 ). The magnetic clay was separated from the drum by a plastic blade and recuperated in a plastic container (Salinas et al 2018 ). With the magnetic drum separator operated at a flow rate of 0.08 L min –1 , 62% dye removal could be obtained, and the outlet effluent dye concentration was 92 ppm for a 10 min residence time on the separator (Salinas et al 2018 ).…”

Section: Developments With Magnetic Nanoadsorbents and Magnetic Separationmentioning

confidence: 99%

“…The magnetic clay was separated from the drum by a plastic blade and recuperated in a plastic container (Salinas et al 2018 ). With the magnetic drum separator operated at a flow rate of 0.08 L min –1 , 62% dye removal could be obtained, and the outlet effluent dye concentration was 92 ppm for a 10 min residence time on the separator (Salinas et al 2018 ). In another study, the separation efficiency for magnetic hydrogel adsorbing Cr(VI) was more than 97% throughout the twenty cycles of treatment in an industrial wastewater treatment prototype (Tang et al 2014 ).…”

Section: Developments With Magnetic Nanoadsorbents and Magnetic Separationmentioning

confidence: 99%

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Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

Mudhoo

Sillanpää

2021

Environ Chem Lett

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Pure water will become a golden resource in the context of the rising pollution, climate change and the recycling economy, calling for advanced purification methods such as the use of nanostructured adsorbents. However, coming up with an ideal nanoadsorbent for micropollutant removal is a real challenge because nanoadsorbents, which demonstrate very good performances at laboratory scale, do not necessarily have suitable properties in in full-scale water purification and wastewater treatment systems. Here, magnetic nanoadsorbents appear promising because they can be easily separated from the slurry phase into a denser sludge phase by applying a magnetic field. Yet, there are only few examples of large-scale use of magnetic adsorbents for water purification and wastewater treatment. Here, we review magnetic nanoadsorbents for the removal of micropollutants, and we explain the integration of magnetic separation in the existing treatment plants. We found that the use of magnetic nanoadsorbents is an effective option in water treatment, but lacks maturity in full-scale water treatment facilities. The concentrations of magnetic nanoadsorbents in final effluents can be controlled by using magnetic separation, thus minimizing the ecotoxicicological impact. Academia and the water industry should better collaborate to integrate magnetic separation in full-scale water purification and wastewater treatment plants.

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Section: Developments With Magnetic Nanoadsorbents and Magnetic Separationmentioning

confidence: 99%

Section: Developments With Magnetic Nanoadsorbents and Magnetic Separationmentioning

confidence: 99%

Section: Developments With Magnetic Nanoadsorbents and Magnetic Separationmentioning

confidence: 99%

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Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

Mudhoo

Sillanpää

2021

Environ Chem Lett

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“…Dye removal by adsorption techniques is used extensively because of its simplicity and flexibility [24]. Moreover, it does not generate sludge or any harmful by-product [25].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Remazol Brilliant Blue R Adsorption onto Xanthium Italicum using the Response Surface Method

Saleh¹,

Yalvaç²,

Arslan³

2019

Karbala International Journal of Modern Science

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In this study, the adsorption capacity of toxic and recalcitrant organic pollutant(s) Remazol Brilliant Blue R (RBBR) onto the invader Xanthium İtalicum (XI) plant was assessed using the Response Surface Method (RSM). The adsorp-tion behavior of RBBR was determined by the spectrophotometric method, FTIR and SEM analysis were used to characterize XI, Brunauer, the Emmett and Teller (BET) analysis was accomplished to find the surface area of the ad-sorbent. The experiment procedures were planned by the Central Composite Design (CCD) whereby a model was built to examine the effects of the different parameters and the possible interaction between them. The correlation factor (R2) for the developed model was 0.985, suggesting that the model could achieve 98.5% of RBBR removal through an adsorption process. The desirability of 0.992 can be attained using the identified optimum conditions: XI = 3g, pH = 9, Time = 84min, RBBR = 50ppm. Under these conditions, the adsorption capacity reached 1.59 mg.g-1, and the removal percentage reached 95%. Freundlich isotherm had the best-fitted values with R2 of 0.999. Furthermore, the adsorption of RBBR onto XI was found to be pseudo-second-order kinetic with R2=0.999. Also, the recovery of RBBR from XI was studied through desorption experiments in presents of 0.5M NaOH. The recovery percentage after 120 min reached 47%. The maximum recovery percentage reached 73% at 24h.

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“…If such untreated printing and dyeing wastewater is directly discharged into natural water bodies, the pollutants in the wastewater will compete with aquatic organisms for dissolved oxygen in the water, destroy the ecological balance of the water environment and affect the entire ecosystem. At present, domestic and foreign researchers mainly deal with printing and dyeing wastewater by coagulation sedimentation method, adsorption method, membrane separation technology, advanced oxidation method, electrochemical method and biological treatment method [5,6]. As reverse osmosis(RO) process [7] can effectively barrier various ions and large contaminants, it has also been widely applied in printing and dyeing wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Particle Size Distribution Based Occurrence Features of Organic Components in Printing and Dyeing Wastewater Under a Treatment Process

Liu

et al. 2019

E3S Web Conf.

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A more detailed occurrence features of organic matters in the printing and dyeing wastewater, based on its particle size distribution (PSD) and along with a wastewater treatment process, was conducted to provide a support for advanced treatment. Results suggested that, (1) In the dyeing wastewater, the occurrence characteristic of COD was: soluble>supra colloidal>colloidal>settleable; However, for protein, the supra colloidal was dominant, followed by the soluble. The feature of the polysaccharide was consistent with COD’s. In the wastewater, 29.66% of COD could be attributed to proteins and 3.45% of the COD could be attributed to polysaccharides. (2) The relationship among the forms of COD in the primary sedimentation tank, aerobic tank, secondary sedimentation tank, and reverse osmosis-treated concentrated effluent was consistent, that was: soluble>colloidal>supra colloidal>settleable. (3) In the primary sedimentation tank, the settleable COD was almost completely removed; In the aerobic tank, the residual super colloidal COD was not much; After MBR-RO treatment, the COD in the reverse osmosis concentrated water was almost dissolved and only a little presented in other forms.

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Design and testing of a pilot scale magnetic separator for the treatment of textile dyeing wastewater

Cited by 33 publications

References 39 publications

Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

Optimization of Remazol Brilliant Blue R Adsorption onto Xanthium Italicum using the Response Surface Method

Particle Size Distribution Based Occurrence Features of Organic Components in Printing and Dyeing Wastewater Under a Treatment Process

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