Effective dye purification using tight ceramic ultrafiltration membrane

Jiang, Mei; Ye, Kunfeng; Lin, Jiuyang; Zhang, Xinying; Ye, Wenyuan; Zhao, Shuaifei; Bruggen, Bart Van der

doi:10.1016/j.memsci.2018.09.001

Cited by 92 publications

(30 citation statements)

References 39 publications

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“…After activation of the perlite by alkaline solution, new bands are observed at 2965 and 1645 cm − 1 due to the presence of water molecules in the material structure. e band located at 1431 cm − 1 is attributed to antisymmetric vibrations of CO 2 3− ions, revealing that sodium carbonate is present in the structure of the geopolymer [21]. Figure 3.…”

Section: Ftir Analysismentioning

confidence: 99%

“…is makes them even more dangerous to the environment, which is why it needs to be removed from wastewaters before discharge in the aqueous system. Several wastewater treatment techniques such as ultrafiltration [2], membrane separation [3], ion exchange [4], coagulation/flocculation [5], electrochemical processes [6], adsorption [7,8], and photocatalytic degradation [9] have been used to remove and degrade the dyes from water and wastewater. e photocatalytic degradation method is based on the degradation of organic pollutants in the presence of UV and a material doped by a photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Degradation of Methylene Blue from Aqueous Medium onto Perlite-Based Geopolymer

Saufi

Alouani

Alehyen

et al. 2020

International Journal of Chemical Engineering

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In this work, geopolymer synthesized with perlite and an alkaline activator medium was evaluated as a new adsorbent and photocatalyst for degradation of methylene blue (MB) dye from an aqueous medium. The functional group, the structure, and the morphology of the raw and the synthesized materials were characterized using FT-IR, XRD, and SEM analysis. The degradation of MB in the contaminated solution was examined using the spectrophotometric technique. Several analysis methods revealed the formation of the aluminosilicate gel after the geopolymerization reaction. The kinetics data with UV and without UV irradiations were well fitted with the pseudo-second-order equation. The results indicated that the degradation efficiency of cationic dye by perlite-based geopolymer without and with UV was up to 88.94% and 97.87% in 4 hours, respectively. The degradation efficiencies of methylene blue are in the following order: perlite-based geopolymer under UV irradiations is greater than perlite-based geopolymer without UV irradiations that is larger than UV irradiations. The overall experimental results suggested that the new elaborated material with synergetic adsorption and photocatalytic activities has a great potential for the treatment of water contaminated by hazardous substances.

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Section: Ftir Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methylene Blue from Aqueous Medium onto Perlite-Based Geopolymer

Saufi

Alouani

Alehyen

et al. 2020

International Journal of Chemical Engineering

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“…Furthermore, NF is used to treat various industrial wastewater effluents and in particular, to remove ions and compounds from waste streams. In the textile industry, for instance, NF is employed to treat the spent dyeing solution produced by the industrial process, to separate dye and salts (NaCl and Na 2 SO 4 ) [10,11] and to remove the colour and enable the reuse of the permeate as fresh reactant solution [12][13][14]. Other applications of NF include the removal of heavy metals such as barium, strontium [15], cadmium, nickel [16] and lead [17] from wastewater, the removal of lithium from salt lake brines [18], the recovery of boric acid present in radioactive wastewater produced by nuclear power plants [19] and the treatment of acidic coal mine drainage [20].…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical characterization of commercial nanofiltration membranes for the treatment of ion exchange spent regenerant

Micari

Diamantidou

Heijman

et al. 2020

Journal of Membrane Science

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This work presents a joint experimental and simulation campaign aimed at characterizing two nanofiltration membranes (TS80 and NF270) in the presence of a multi-ionic water solution simulating the spent regenerant of cationic ion exchange resins employed for water softening. We identified the membrane parameters, which allowed for predicting the performances through the Donnan Steric Pore Model with Dielectric Exclusion. A good agreement between model and experimental trends of rejection as a function of the applied pressure was observed (error < 15%). The analysis of trans-membrane fluxes and exclusion coefficients showed that dielectric exclusion was the crucial mechanism for the ionic partition. In fact, the lower pore dielectric constant found for TS80 justified the higher rejections to divalent cations with respect to NF270. Moreover, negative charge densities were found for both membranes, because of the high concentration of chloride ions in the feed, which likely adsorbed onto the membrane. However, it was observed that the experimental rejections did not change significantly with the feed pH. This result, in line with the minor role of the Donnan exclusion resulting from the model, suggested that the membrane performances were not much affected by the charge density at high feed ionic strengths (~1 M).

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“…The presence of PANI molecules on the membrane surface led to a positive shift in the zeta potential from −10.5 to −1.7 mV, which increased the repulsive force between PANI molecules and the MB dye. The size exclusion mechanism was more dominant based on the porosity of the membrane surface [ 41 , 42 , 43 ]. The sizes of the pores in the PANI-coated PPSU membrane were in the nanoscale range, which increased rejection efficacy.…”

Section: Resultsmentioning

confidence: 99%

Dye Separation and Antibacterial Activities of Polyaniline Thin Film-Coated Poly(phenyl sulfone) Membranes

et al. 2020

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We fabricated a nanofiltration membrane consisting of a polyaniline (PANI) film on a polyphenylsulfone (PPSU) substrate membrane. The PANI film acted as a potent separation enhancer and antimicrobial coating. The membrane was analyzed via scanning electron microscopy and atomic force microscopy to examine its morphology, topography, contact angle, and zeta potential. We aimed to investigate the impact of the PANI film on the surface properties of the membrane. Membrane performance was then evaluated in terms of water permeation and rejection of methylene blue (MB), an organic dye. Coating the PPSU membrane with a PANI film imparted significant advantages, including finely tuned nanometer-scale membrane pores and tailored surface properties, including increased hydrophilicity and zeta potential. The PANI film also significantly enhanced separation of the MB dye. The PANI-coated membrane rejected over 90% of MB with little compromise in membrane permeability. The PANI film also enhanced the antimicrobial activity of the membrane. The bacteriostasis (BR) values of PANI-coated PPSU membranes after six and sixteen hours of incubation with Escherichia coli were 63.5% and 95.2%, respectively. The BR values of PANI-coated PPSU membranes after six and sixteen hours of incubation with Staphylococcus aureus were 70.6% and 88.0%, respectively.

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Effective dye purification using tight ceramic ultrafiltration membrane

Cited by 92 publications

References 39 publications

Photocatalytic Degradation of Methylene Blue from Aqueous Medium onto Perlite-Based Geopolymer

Photocatalytic Degradation of Methylene Blue from Aqueous Medium onto Perlite-Based Geopolymer

Experimental and theoretical characterization of commercial nanofiltration membranes for the treatment of ion exchange spent regenerant

Dye Separation and Antibacterial Activities of Polyaniline Thin Film-Coated Poly(phenyl sulfone) Membranes

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