Improved filtration for dye removal using keratin–polyamide blend nanofibrous membranes

David, Padma Sheeba; Karunanithi, Arthi; Fathima, Nishter Nishad

doi:10.1007/s11356-020-10491-y

Cited by 41 publications

(9 citation statements)

References 44 publications

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“…Thus, CV dye removal is mandatory before discharging CV-contaminated wastewater into water body to circumvent possible health hazard associated with it. There are many methods to treat dye-house effluent and the main ones can be classified as chemical oxidation [ 11 ], ozonation [ 12 ], electrochemical [ 13 ], coagulation/flocculation [ 14 ], membrane filtration [ 15 ], photo-degradation [ 16 ], biological [ 17 ], precipitation [ 18 ] and adsorption process [ 19 , 20 , 21 ]. Among these methods, adsorption is preferred because of its simplicity and high removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of high surface area mesoporous ZnCl2–activated cocoa (Theobroma cacao L) leaves biochar derived via pyrolysis for crystal violet dye removal

Jabar

Adebayo²,

Owokotomo³

et al. 2022

Heliyon

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Section: Introductionmentioning

confidence: 99%

Synthesis of high surface area mesoporous ZnCl2–activated cocoa (Theobroma cacao L) leaves biochar derived via pyrolysis for crystal violet dye removal

Jabar

Adebayo²,

Owokotomo³

et al. 2022

Heliyon

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“…Modified keratin has shown strong adsorption capacity for the metals As, Cd, Cu, V V , K, Co, Ni, Zn, and Cr VI [ 156 ]. Toxic water pollutants, such as heavy metals, dyes, and antibiotics, can be fixed in the network structure of the keratin-based film through complex reactions [ 118 , 157 , 158 , 159 ]. Qian et al [ 160 ] prepared a cellulose nanocrystal (CNC)/keratin composite film and investigated its blue KN-R dye adsorption behaviour.…”

Section: Functional Properties Of Keratin-based Filmsmentioning

confidence: 99%

Preparation Methods and Functional Characteristics of Regenerated Keratin-Based Biofilms

Wang

Tong

2022

Polymers

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The recycling, development, and application of keratin-containing waste (e.g., hair, wool, feather, and so on) provide an important means to address related environmental pollution and energy shortage issues. The extraction of keratin and the development of keratin-based functional materials are key to solving keratin-containing waste pollution. Keratin-based biofilms are gaining substantial interest due to their excellent characteristics, such as good biocompatibility, high biodegradability, appropriate adsorption, and rich renewable sources, among others. At present, keratin-based biofilms are a good option for various applications, and the development of keratin-based biofilms from keratin-containing waste is considered crucial for sustainable development. In this paper, in order to achieve clean production while maintaining the functional characteristics of natural keratin as much as possible, four important keratin extraction methods—thermal hydrolysis, ultrasonic technology, eco-friendly solvent system, and microbial decomposition—are described, and the characteristics of these four extraction methods are analysed. Next, methods for the preparation of keratin-based biofilms are introduced, including solvent casting, electrospinning, template self-assembly, freeze-drying, and soft lithography methods. Then, the functional properties and application prospects of keratin-based biofilms are discussed. Finally, future research directions related to keratin-based biofilms are proposed. Overall, it can be concluded that the high-value conversion of keratin-containing waste into regenerated keratin-based biofilms has great importance for sustainable development and is highly suggested due to their great potential for use in biomedical materials, optoelectronic devices, and metal ion detection applications. It is hoped that this paper can provide some basic information for the development and application of keratin-based biofilms.

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“…A nanofibre membrane for dye removal has been fabricated by electrospinning the polymer dope prepared from the blending of commercial polyamide and keratin extracted from waste goat hair [137]. The keratin was extracted through sulphitolysis, and the keratin solution was prepared by dissolving the hydrolysed keratin in formic acid.…”

Section: Keratinmentioning

confidence: 99%

Waste Reutilization in Polymeric Membrane Fabrication: A New Direction in Membranes for Separation

2021

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In parallel to the rapid growth in economic and social activities, there has been an undesirable increase in environmental degradation due to the massively produced and disposed waste. The need to manage waste in a more innovative manner has become an urgent matter. In response to the call for circular economy, some solid wastes can offer plenty of opportunities to be reutilized as raw materials for the fabrication of functional, high-value products. In the context of solid waste-derived polymeric membrane development, this strategy can pave a way to reduce the consumption of conventional feedstock for the production of synthetic polymers and simultaneously to dampen the negative environmental impacts resulting from the improper management of these solid wastes. The review aims to offer a platform for overviewing the potentials of reutilizing solid waste in liquid separation membrane fabrication by covering the important aspects, including waste pretreatment and raw material extraction, membrane fabrication and characterizations, as well as the separation performance evaluation of the resultant membranes. Three major types of waste-derived polymeric raw materials, namely keratin, cellulose, and plastics, are discussed based on the waste origins, limitations in the waste processing, and their conversion into polymeric membranes. With the promising material properties and viability of processing facilities, recycling and reutilization of waste resources for membrane fabrication are deemed to be a promising strategy that can bring about huge benefits in multiple ways, especially to make a step closer to sustainable and green membrane production.

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Improved filtration for dye removal using keratin–polyamide blend nanofibrous membranes

Cited by 41 publications

References 44 publications

Synthesis of high surface area mesoporous ZnCl2–activated cocoa (Theobroma cacao L) leaves biochar derived via pyrolysis for crystal violet dye removal

Synthesis of high surface area mesoporous ZnCl2–activated cocoa (Theobroma cacao L) leaves biochar derived via pyrolysis for crystal violet dye removal

Preparation Methods and Functional Characteristics of Regenerated Keratin-Based Biofilms

Waste Reutilization in Polymeric Membrane Fabrication: A New Direction in Membranes for Separation

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