Thiol-functionalized chitin nanofibers for As (III) adsorption

Yang, Rui; Su, Ying; Aubrecht, Katherine B.; Xiao, Wang; Ma, Hongyang; Grubbs, Robert B.; Hsiao, Benjamin S.; Chu, Benjamin

doi:10.1016/j.polymer.2015.01.025

Cited by 78 publications

(39 citation statements)

References 47 publications

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“…The PAN-g-PVAm membrane also exhibited excellent Cr(VI) adsorption capability in a dynamic filtration process. Yang et al (2015a) prepared thiol modified natural polysaccharide chitin nanofibers and used as an absorbent material for arsenic [As(III)] removal. The arsenic adsorption performance of thiol-modified chitin nanofibers was evaluated under different pH conditions and at different metal ion concentrations, where the maximum adsorption capacity was found to be 149 mg/g at pH 7.0 using the Langmuir model.…”

Section: Electrospun Nanofibersmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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Application of polymeric membranes for the adsorption of hazardous pollutants may lead to the development of next-generation reusable and portable water purification appliances. Membranes for membrane adsorption (MA) have the dual function of membrane filtration and adsorption to be very effective to remove trace amounts of pollutants such as cationic heavy metals, anionic phosphates and nitrates. In this review article, recent progresses in the development of MA membranes are surveyed. In addition, recent progresses in the development of advanced adsorbents such as nanoparticles are summarized, since they are potentially useful as fillers in the host membrane to enhance its performance. The future directions of R&D in this field are also shown in the conclusion section.

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Section: Electrospun Nanofibersmentioning

confidence: 99%

Removal of heavy metals and pollutants by membrane adsorption techniques

2018

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“…FTIR spectra before and after adsorption confirmed that the –CH 3 , –OH and –NH 2 groups were involved in capturing the arsenate. Unmodified chitin nanofibers and thiol-modified chitin nanofibers were fabricated and tested to remove As 3+ [ 41 ]. The modified chitin had a higher removal capacity, i.e., 138 mg/g at pH 7.0 instead of 58 mg/g at pH 5, which was given by untreated chitin nanofibers.…”

Section: Removal Of Toxic Metalsmentioning

confidence: 99%

Chitin Adsorbents for Toxic Metals: A Review

Anastopoulos

Bhatnagar

Bikiaris

et al. 2017

IJMS

144

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Wastewater treatment is still a critical issue all over the world. Among examined methods for the decontamination of wastewaters, adsorption is a promising, cheap, environmentally friendly and efficient procedure. There are various types of adsorbents that have been used to remove different pollutants such as agricultural waste, compost, nanomaterials, algae, etc., Chitin (poly-β-(1,4)-N-acetyl-d-glucosamine) is the second most abundant natural biopolymer and it has attracted scientific attention as an inexpensive adsorbent for toxic metals. This review article provides information about the use of chitin as an adsorbent. A list of chitin adsorbents with maximum adsorption capacity and the best isotherm and kinetic fitting models are provided. Moreover, thermodynamic studies, regeneration studies, the mechanism of adsorption and the experimental conditions are also discussed in depth.

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“…Among all methods proposed for arsenic removal adsorption stands out as a simple and efficient method. A wide range of sorbent materials can be used to decrease arsenic concentration in water solutions, such as thiolfunctionalized chitin nanofibres, goethite-based adsorbent, zero valent iron, synthetic siderite, titanium dioxide and many others [9][10][11][12][13]. Ungureanu et al [14] gave a review of latest advances in adsorption of arsenic.…”

Section: Introductionmentioning

confidence: 99%

Arsenic(III) adsorption from aqueous solutions on novel carbon cryogel/ceria nanocomposite

Minovic-Arsic¹,

Kalijadis²,

Matović³

et al. 2016

PAC

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Carbon cryogel/ceria composite, with 10 wt.% of ceria, was synthesized by mixing of ceria and carbon cryogel (CC). The sample was characterized by field emission scanning electron microscopy, nitrogen adsorption and X-ray diffraction. The adsorption of arsenic(III) ions from aqueous solutions on carbon cryogel/ceria nanocomposite was studied as a function of time, solution pH and As(III) ion concentration. The results are correlated with previous investigations of adsorption mechanism of arsenic(III) on carbon cryogel. Adsorption dose experiments showed that the mass of the adsorbent was reduced for 20 times, in comparison with pure CC, for the same amount of adsorbed arsenic(III) ions. BET isotherm was used to interpret the experimental data for modelling liquid phase adsorption.

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Thiol-functionalized chitin nanofibers for As (III) adsorption

Cited by 78 publications

References 47 publications

Removal of heavy metals and pollutants by membrane adsorption techniques

Removal of heavy metals and pollutants by membrane adsorption techniques

Chitin Adsorbents for Toxic Metals: A Review

Arsenic(III) adsorption from aqueous solutions on novel carbon cryogel/ceria nanocomposite

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