“Environmental friendly and cost effective caramel for congo red removal, high flux, and fouling resistance of polysulfone membranes”

Lavanya, C.; Soontarapa, Khantong; Jyothi, M.S.; Balakrishna, R. Geetha

doi:10.1016/j.seppur.2018.10.006

Cited by 42 publications

(21 citation statements)

References 32 publications

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“…log(q e − q t ) = log q e − K 1 t 2.303 (5) where q e is the quantity of dye adsorbed at equilibrium (mg g −1 ), q t (mg g −1 ) is the quantity of dye adsorbed at time t (min), and K 1 is the rate constant (g mg −1 min −1 ). As shown in Figure 9 and Table 3, with a mean R 2 of 0.8085, some samples did not display good linearity.…”

Section: Kinetics Of the Adsorption Processmentioning

confidence: 99%

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Functionalized Leather: A Novel and Effective Hazardous Solid Waste Adsorbent for the Removal of the Diazo Dye Congo Red from Aqueous Solution

Clavijo

Osma

2019

Water

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The leather industry produces a high yield of solid hazardous wastes that generate a major impact on the environment. At the same time, the use of dyes by different manufacturing industries, including the footwear industry, creates large amounts of colored wastewater that is hard to treat. In this paper, potential adsorbents based on the functionalization of solid waste from leather in the removal of anionic dye Congo Red were studied. Twelve different functionalized adsorbents were analyzed in terms of dye removal. From those, the best adsorbents were characterized and tested to determine their life cycle, pH dependency and the resulting phytotoxicity of the treated dye baths. Different kinetic models were evaluated to describe this adsorption process. It was found that functionalized leather adsorbents presented multi-linearity behavior when removing Congo Red. Life cycle analysis showed that the adsorbents presented a high yield of absorption until the third cycle of operation, while phytotoxicity tested showed reductions up to 50% in the toxicity of the treated dye baths.

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Section: Kinetics Of the Adsorption Processmentioning

confidence: 99%

“…Congo Red (CR) is an anionic dye that contains a benzidine compound (Figure 1), a carcinogenic and mutagenic substance. It is a toxic azo dye that can generate serious skin, genital, and eye irritations [5,6]. CR is most widely used due to its easy operation, low cost, and adhesion features.…”

Section: Introductionmentioning

confidence: 99%

Functionalized Leather: A Novel and Effective Hazardous Solid Waste Adsorbent for the Removal of the Diazo Dye Congo Red from Aqueous Solution

Clavijo

Osma

2019

Water

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“…Currently, polymeric membranes, due to their low cost, ease of processing, and chemical stability [1][2][3], are widely utilized in numerous membrane based processes, such as gas separation [4,5], pervaporation [6,7], desalination, and water treatment [8][9][10]. Polysulfone (PSF) is one of the most popular and broadly used polymers for the fabrication of microfiltration (MF) and ultrafiltration (UF) membranes [11,12]. In addition, PSF is used for the preparation of porous supports for nanofiltration (NF), reverse osmosis (RO), and forward osmosis (FO) membranes [11,13].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, PSF is used for the preparation of porous supports for nanofiltration (NF), reverse osmosis (RO), and forward osmosis (FO) membranes [11,13]. PSF has good chemical, thermal, and mechanical properties as well as an excellent film forming potential and tolerance to a wide range of pH [12,14]. However, the main shortcoming of PSF as a membrane material is the hydrophobic nature of this polymer, which causes PSF membrane fouling and relatively low tensile strength [12,15].…”

Section: Introductionmentioning

confidence: 99%

“…PSF has good chemical, thermal, and mechanical properties as well as an excellent film forming potential and tolerance to a wide range of pH [12,14]. However, the main shortcoming of PSF as a membrane material is the hydrophobic nature of this polymer, which causes PSF membrane fouling and relatively low tensile strength [12,15]. Mechanical properties, such as elastic modulus and yield stress, are important characteristics for polymeric membranes used for pressure-driven membrane processes [16].…”

Section: Introductionmentioning

confidence: 99%

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Polysulfone Membranes Embedded with Halloysites Nanotubes: Preparation and Properties

et al. 2019

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In the present study, nanocomposite ultrafiltration membranes were prepared by incorporating nanotubes clay halloysite (HNTs) into polysulfone (PSF) and PSF/polyvinylpyrrolidone (PVP) dope solutions followed by membrane casting using phase inversion method. Characterization of HNTs were conducted using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and thermogravimetric (TGA) analysis. The pore structure, morphology, hydrophilicity and mechanical properties of the composite membranes were characterized by using SEM, water contact angle (WCA) measurements, and dynamic mechanical analysis. It was shown that the incorporation of HNTs enhanced hydrophilicity and mechanical properties of the prepared PSF membranes. Compared to the pristine PSF membrane, results show that the total porosity and pore size of PSF/HNTs composite membranes increased when HNTs loadings were more than 0.5 wt % and 1.0 wt %, respectively. These findings correlate well with changes in water flux of the prepared membranes. It was observed that HNTs were homogenously dispersed within the PSF membrane matrix at HNTs content of 0.1 to 0.5 wt % and the PSF/HNTs membranes prepared by incorporating 0.2 wt % HNTs loading possess the optimal mechanical properties in terms of elastic modulus and yield stress. In the case of the PSF/PVP matrix, the optimal mechanical properties were obtained with 0.3 wt % of HNTs because PVP enhances the HNTs distribution. Results of bovine serum albumin (BSA) filtration tests indicated that PSF/0.2 wt % HNTs membrane exhibited high BSA rejection and notable anti-fouling properties.

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Biomimetic mussel technology for membrane material modification: Adhesion mechanism and design strategy

Chen,

Liu,

et al. 2023

Journal of Polymer Science

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In recent years, there has been increasing interest among scientists in the research and development of mussel biomimetic membrane technology, owing to the unique advantages of mussel foot silk protein. This article provides a concise overview of the development of biomimetic mussel technology and its innovative approach to modifying membrane materials. The remarkable adhesion and suitability of mussel bionics can effectively enhance the physical and chemical structure of the substrate surface in membrane materials, and serve as a platform for subsequent post‐functionalization, offering endless possibilities for the advancement of membrane materials.

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“Environmental friendly and cost effective caramel for congo red removal, high flux, and fouling resistance of polysulfone membranes”

Cited by 42 publications

References 32 publications

Functionalized Leather: A Novel and Effective Hazardous Solid Waste Adsorbent for the Removal of the Diazo Dye Congo Red from Aqueous Solution

Functionalized Leather: A Novel and Effective Hazardous Solid Waste Adsorbent for the Removal of the Diazo Dye Congo Red from Aqueous Solution

Polysulfone Membranes Embedded with Halloysites Nanotubes: Preparation and Properties

Biomimetic mussel technology for membrane material modification: Adhesion mechanism and design strategy

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