Development of a mathematical model to predict different parameters during pharmaceutical wastewater treatment using TiO2 coated membrane

Sarkar, Santanu; Sondhi, Kartik; Das, Ranjana; Chakraborty, Sudip; Choi, Heechul; Bhattacharjee, Chiranjib

doi:10.1016/j.ecoenv.2015.03.041

Cited by 26 publications

(4 citation statements)

References 29 publications

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“…The effect of ease of flow is in line with the resistance-in-series model developed by Machado, Hasson, and Semiat [40] and described by Equation (7). The model describes the permeation of the solvent through composite polymeric membranes.…”

Section: Organic Solvent Permeabilitysupporting

confidence: 56%

“…Lab-scale and commercial-scale applications of OSN membranes have been reported [ 4 , 5 ]. In the advance and application of the membrane process, characterization of modelling and optimization are essential steps [ 6 , 7 ]. A consistent and reliable method of measuring the separation performance of membranes is essential and allows end-users to make an informed selection [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Selected Polymeric Membranes Used in the Separation and Recovery of Palladium-Based Catalyst Systems

et al. 2020

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Membrane separation processes tender a capable option for energy-demanding separation processes. Nanofiltration (NF) and reverse osmosis (RO) membranes are among the most explored, with a latent use in the chemical industry. In this study, four commercial membranes (NF90, NF270, BW30, and XLE) were investigated for their applicability based on the key structural performance characteristics in the recycling of Pd-based catalysts from Heck coupling post-reaction mixture. Pure water and organic solvent permeabilities, uncharged solute permeability, swelling, and catalyst rejection studies of the membranes were conducted as well as the morphological characterization using Fourier transform infrared, field emission gun scanning electron microscopy, and atomic force microscopy. Characterization results showed trends consistent with the manufactures’ specifications. Pure water and organic solvent fluxes generally followed the trend NF270 > NF90 > BW30 > XLE, with the solvent choice playing a major role in the separation process. Pd(PPh3)2Cl2 was well rejected by almost all membranes in 2-propanol; however, XLE rejects Pd(OAc)2 better at high pressure in acetonitrile. Our study, therefore, revealed that the separation and reuse of the two catalysts by NF90 at 10 bar resulted in 97% and 49% product yields with 52% and 10% catalyst retention for Pd(OAc)2 while Pd(PPh3)2Cl2. gave 87% and 6% yields with 58% and 36% catalyst retention in the first and second cycles, respectively. Considering, the influence of membrane–solute interactions in Pd-catalyst rejection, a careful selection of the polymeric membrane and solvent, a satisfactory separation, and recovery can be achieved.

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Section: Organic Solvent Permeabilitysupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Characterization of Selected Polymeric Membranes Used in the Separation and Recovery of Palladium-Based Catalyst Systems

et al. 2020

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“…Several researchers have shown that a wide variety of materials of natural or biological origin have the ability to remove large amounts of organic pollutants from water (Weber et al 2011;Naidoo and Olaniran 2014;Chakraborty et al 2014;Bhattacharjee et al 2014;Sarkar et al 2015;Chakraborty et al 2017;Aloulou et al 2018;Shakeel et al, 2019;Asefi et al 2019;Ahmedkhan et al 2019;Priya et al 2020;Tunç et al 2019). Activated carbon (Yu-Li and Thomas 1995; Meshko et al 2001), alumina (Crini 2006), and zeolites (Meshko et al 2001) are considered some of the most versatile adsorbents, and many studies show their effectiveness, but their use is limited due to difficulties in their regeneration, and their relatively high cost (Sadlki et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Efficiency of natural clay and titania P25 composites in the decolouring of methylene blue (MB) from aqueous solutions: dual adsorption and photocatalytic processes

et al. 2021

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In this paper, we use Tunisian clay materials as alternative low-cost adsorbents, as well as substrates to immobilise TiO 2 for the decolouration of methylene blue (MB) dye solutions. The collected raw clay from the mine of Tamra was characterised by various techniques, such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray fluorescence (XRF). XRD patterns of the raw clay showed halloysite as the main phase (61%), with a lower content of kaolinite (39%). For MB adsorption, the experimental data were fitted by Langmuir and Freundlich adsorption equations. It was found that the studied clays alone were not very efficient at adsorbing MB dye molecules. The decolouration of MB was improved by adding a photocatalytic function to the clay, by adding various amounts of TiO 2 nanopowder (20-80 wt%) to the clay, imbuing it with photocatalytic capabilities. These combined effects of the phenomena of adsorption and photocatalysis for MB removal by the TiO 2 -doped clay resulted in a very satisfactory performance, even with the relatively low quantity of 20 wt% added TiO 2 photocatalyst. This gave 48.6% removal after only 30-min adsorption in the dark, increasing to 84.1% removal after a further 3 h under UV light, through combined chemo-physical adsorption and photocatalytic decolouration phenomena.

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“…On the other hand, the super hydrophilic surface of TiO 2 nanoparticles is the main feature seriously considered for making nanocomposite membranes [19]. Also, TiO 2 is often used as a photocatalyst in water and wastewater treatment in order to accelerate the degradation of organic contaminants [20][21][22][23][24]. According to literature, there is no report about the PC/TiO 2 nanocomposite membrane for water treatment.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

et al. 2020

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A novel polycarbonate (PC) membrane was modified with titanium dioxide via nonsolvent-induced phase separation method to improve its hydrophilicity and antifouling properties in a submerged membrane system for the removal of humic acid (HA) both with and without polyaluminum chloride (PAC) coagulant. The effect of TiO 2 additive on the morphology and performance of the nanocomposite membranes was studied by atomic force microscopy, field emission scanning electron microscopy, energy dispersive X-ray, mechanical properties, water contact angle, porosity, pure water flux, rejection tests, and antifouling parameters. The obtained results revealed that a higher critical flux was achieved by the PC/TiO 2 nanocomposite membrane. The flux recovery ratio of the neat PC membrane increased with the addition of TiO 2 nanoparticles and without PAC coagulant. HA removal for the PC nanocomposite membrane was higher than that of the neat PC membrane with and without PAC coagulant.

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Development of a mathematical model to predict different parameters during pharmaceutical wastewater treatment using TiO2 coated membrane

Cited by 26 publications

References 29 publications

Characterization of Selected Polymeric Membranes Used in the Separation and Recovery of Palladium-Based Catalyst Systems

Characterization of Selected Polymeric Membranes Used in the Separation and Recovery of Palladium-Based Catalyst Systems

Efficiency of natural clay and titania P25 composites in the decolouring of methylene blue (MB) from aqueous solutions: dual adsorption and photocatalytic processes

Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination

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Development of a mathematical model to predict different parameters during pharmaceutical wastewater treatment using TiO2 coated membrane

Cited by 26 publications

References 29 publications

Characterization of Selected Polymeric Membranes Used in the Separation and Recovery of Palladium-Based Catalyst Systems

Characterization of Selected Polymeric Membranes Used in the Separation and Recovery of Palladium-Based Catalyst Systems

Efficiency of natural clay and titania P25 composites in the decolouring of methylene blue (MB) from aqueous solutions: dual adsorption and photocatalytic processes

Synthesis and Characterization of Polycarbonate/TiO2 Ultrafiltration Membranes: Critical Flux Determination

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Synthesis and Characterization of Polycarbonate/TiO₂ Ultrafiltration Membranes: Critical Flux Determination