Adsorptive defluoridation from aqueous solution using a novel blend of eggshell powder and chitosan nanofibers

Abbasi, Aamir; Memon, Sheeraz; Jamshaid, Hafsa; Mehdi, Mujahid; Khatri, Muzamil; Ahmed, Farooq; Khatri, Zeeshan; Kim, Ick Soo

doi:10.1088/2053-1591/abcd6e

Cited by 11 publications

(6 citation statements)

References 33 publications

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“…At present, a substantial amount of research is being conducted on eggshell applications, and there have been relatively important results in many aspects [33][34][35][36][37][38]. A novel composite nanomaterial, eggshell/Ag, can effectively promote the catalytic degradation of organics and has substantial application prospects in the resolution of problems encountered in microbial treatment of sewage [39].…”

Section: Methodsmentioning

confidence: 99%

Research on High- and Low-Temperature Characteristics of Bitumen Blended with Waste Eggshell Powder

Wang

Zhang

et al. 2021

Materials

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The sustainability of resources is presently a major global concern. Sustainable construction materials can be produced by applying biological waste to engineering. Eggshells, as biological waste, are usually dumped in landfills or discarded. This causes many environmental problems including malodor, noise pollution, and serious waste of resources. To solve these problems, this study combined eggshell waste with bitumen materials for bio-roads construction. This paper investigated the impact of biological waste eggshell powder on the high- and low-temperature characteristics of bitumen materials. Scanning electron microscopy (SEM) revealed the microstructure of eggshell powder. The interaction between eggshell powder and asphalt was analyzed using Fourier transform infrared spectroscopy (FT-IR). The high- and low-temperature characteristics were investigated using conventional performance tests, and dynamic shear rheometer (DSR) and bending beam rheometer (BBR) experiments. These results indicate that eggshell powder (1) has a rough and porous microstructure; (2) has no apparent chemical reaction with asphalt; and (3) improves the consistency, hardness, and high-temperature characteristics. However, it reduces the plastic deformation capacity of asphalt, and the low-temperature crack resistance of asphalt cannot be improved. The research demonstrated that the application of eggshell powder in asphalt is feasible and has long-term resource and environmental advantages.

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Section: Methodsmentioning

confidence: 99%

Research on High- and Low-Temperature Characteristics of Bitumen Blended with Waste Eggshell Powder

Wang

Zhang

et al. 2021

Materials

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“…a Electrical energy was calculated using Equation (5). b Thermal energy was calculating using Equation (6).…”

Section: Electrical and Thermal Energy Consumption For Dyeing Pict Nanofibermentioning

confidence: 99%

“…Poly (1,4-cyclohexane dimethylene isosorbide terephthalate) PICT is one of the bio-based polymers and is widely used in different applications because of its ease of production, eco-friendly character, green source of raw material (wheat, sugar, and corn), unique molecular structure, good transition temperature, and mechanical properties [1]. The unique characteristics of nanofibers such as a high surface area and fine diameter have increased their use in a number of applications such as biomedical, surgical, tissue engineering, filtration membranes, wearable conductives, and apparel applications [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…For advanced apparel applications, the enhancement of the aesthetic properties of nanofibers is equally important as their functional characteristics [4,5]. Some conventionally dyed nanofibers such as the dyeing of polyester nanofibers with disperse dyes using the batch dyeing method [6], the dyeing of cellulose acetate nanofibers with disperse dyes using the pad-dry and bake-dry method [7], and polyurethane nanofibers dyed using the pad-dry-bake method [8], have been previously reported. However, problems such as lower color strength and lower color fastness remained a challenge.…”

Section: Introductionmentioning

confidence: 99%

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Introducing Deep Eutectic Solvents as a Water-Free Dyeing Medium for Poly (1,4-cYclohexane Dimethylene Isosorbide Terephthalate) PICT Nanofibers

Hussain

Mehdi

et al. 2021

Polymers

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Water, one of the most priceless sources of life, is becoming dangerously threatened and contaminated due to population growth, industrial development, and climatic variations. The drainage of industrial, farming, and municipal sewage into drinking water sources pollutes the water. The textile processing industry is one of the major consumers of water. Herein, the idea of water-free dyeing of electrospun poly (1, 4-cyclohexane dimethylene isosorbide terephthalate) PICT nanofibers is proposed. For this, two different deep eutectic solvents (DE solvents) were introduced as an alternative to water for the dyeing of PICT nanofibers in order to develop a water-free dyeing medium. For this, C.I. disperse red 167 was used as a model dye to improve the aesthetic properties of PICT nanofibers. PICT nanofibers were dyed by conventional batch dyeing and ultrasonic dyeing methods to investigate the effect of the dyeing technique on color buildup characteristics. Dyeing conditions such as dyeing time, temperature and, dye-concentration were optimized. Morphological and chemical characterization observations revealed a smooth morphology of dyed and undyed PICT nanofibers. The ultrasonically dyed nanofibers showed higher color strength and increased tensile strength compared to conventionally dyed nanofibers. Further, the consumption of electrical and thermal energy was also calculated for both processes. The results confirmed that the ultrasonic dyeing method can save 58% on electrical energy and 25% on thermal energy as compared to conventional dyeing.

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“…Moreover, high surface area, easy handling, and high porous structure made them more potential candidates from both technical and scientific aspects . Driven by the high mechanical strength, excellent biocompatibility with cell growth, and proliferation, silk is an interesting material for scientists and researchers. − Aromatic repeat units and the presence of amino acid groups endow excellent physical and chemical properties to the silk fibers. , Therefore, promising properties of silk, especially the presence of amino groups and carboxyl in their aromatic ring, excellent physicochemical stability, and large surface area of electrospun silk nanofibers inspired us to assess their adsorption potential for anionic dyes.…”

Section: Introductionmentioning

confidence: 99%

Regenerated Silk Nanofibers for Robust and Cyclic Adsorption–Desorption on Anionic Dyes

et al. 2022

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In recent years, adsorption-based membranes have been widely investigated to remove and separate textile pollutants. However, cyclic adsorption–desorption to reuse a single adsorbent and clear scientific evidence for the adsorption–desorption mechanism remains challenging. Herein, silk nanofibers were used to assess the adsorption potential for the typical anionic dyes from an aqueous medium, and they show great potential toward the removal of acid dyes from the aqueous solution with an adsorption rate of ∼98% in a 1 min interaction. Further, we measured the filtration proficiency of a silk nanofiber membrane in order to propose a continuous mechanism for the removal of acid blue dye, and a complete rejection was observed with a maximum permeability rate of ∼360 ± 5 L·m–2·h–1. The Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy studies demonstrate that this fast adsorption occurs due to multiple interactions between the dye molecule and the adsorbent substrate. The as-prepared material also shows remarkable results in desorption. A 50-time cycle exhibits complete adsorption and desorption ability, which not only facilitates high removal aptitude but also produces less solid waste than other conventional adsorbents. Additionally, fluorescent 2-bromo-2-methyl-propionic acid (abbreviated as EtOxPY)-silk nanofibers can facilitate to illustrate a clear adsorption and desorption mechanism. Therefore, the above-prescribed results make electrospun silk nanofibers a suitable choice for removing anionic dyes in real-time applications.

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Adsorptive defluoridation from aqueous solution using a novel blend of eggshell powder and chitosan nanofibers

Cited by 11 publications

References 33 publications

Research on High- and Low-Temperature Characteristics of Bitumen Blended with Waste Eggshell Powder

Research on High- and Low-Temperature Characteristics of Bitumen Blended with Waste Eggshell Powder

Introducing Deep Eutectic Solvents as a Water-Free Dyeing Medium for Poly (1,4-cYclohexane Dimethylene Isosorbide Terephthalate) PICT Nanofibers

Regenerated Silk Nanofibers for Robust and Cyclic Adsorption–Desorption on Anionic Dyes

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