Removal of toxic pollutants from aqueous media using poly (vinyl imidazole) crosslinked chitosan synthesised through microwave assisted technique

Midya, Lipi; Das, Ranajit; Bhaumik, Madhumita; Sarkar, Tanumoy; Maity, Arjun; Pal, Sagar

doi:10.1016/j.jcis.2019.01.121

Cited by 36 publications

(15 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[64] Midya et al reported successful removal of Cr(VI) with their poly(vinyl imidazole) crosslinked chitosan hydrogel (cl-Ch-pVI), which exhibited a higher maximum adsorption capacity than that reported by Mei et al Additionally, cl-Ch-pVI also showed high affinity for the adsorption of organic dye reactive black 5, which reveals the potential versatility of this polymer in wastewater treatment applications. [65] Electrostatic interactions between the negatively charged adsorbate and Cr(VI)/RB5 is the major contributor for removal of these contaminants from aqueous medium. [65] As such, strongly acidic pH mediums are required for optimum contaminant removal, just as with the sorbate reported on by Mei et al Requiring such low aqueous pH values truly limits the applicability of these materials, since lowering the pH of large quantities of wastewater can prove to be quite intensive and costly.…”

Section: Inorganic Pollutant Removalmentioning

confidence: 99%

“…[65] Electrostatic interactions between the negatively charged adsorbate and Cr(VI)/RB5 is the major contributor for removal of these contaminants from aqueous medium. [65] As such, strongly acidic pH mediums are required for optimum contaminant removal, just as with the sorbate reported on by Mei et al Requiring such low aqueous pH values truly limits the applicability of these materials, since lowering the pH of large quantities of wastewater can prove to be quite intensive and costly. [66] Another chitosan hydrogel, biodegradable chitosan-ethylene glycol hydrogel (CEGH) was reported as an effective, carbon-rich adsorbent for the removal of nitrate in water by Chen et al [66] The adsorption of nitrate onto CEGH, however, was affected by pH since hydrogel amine and hydroxyl functional groups are responsible for the majority of nitrate removal via electrostatic interactions.…”

Section: Inorganic Pollutant Removalmentioning

confidence: 99%

“…Additionally, cl‐Ch‐pVI also showed high affinity for the adsorption of organic dye reactive black 5, which reveals the potential versatility of this polymer in wastewater treatment applications. [ 65 ] Electrostatic interactions between the negatively charged adsorbate and Cr(VI)/RB5 is the major contributor for removal of these contaminants from aqueous medium. [ 65 ] As such, strongly acidic pH mediums are required for optimum contaminant removal, just as with the sorbate reported on by Mei et al.…”

Section: Treating the Environment To Prevent Human Exposure To Enviro...mentioning

confidence: 99%

See 2 more Smart Citations

Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment

Gutiérrez

Frazar

Klaus

et al. 2021

Adv Healthcare Materials

View full text Add to dashboard Cite

Humans are constantly exposed to exogenous chemicals throughout their life, which can lead to a multitude of negative health impacts. Advanced materials can play a key role in preventing or mitigating these impacts through a wide variety of applications. The tunable properties of hydrogels and hydrogel nanocomposites (e.g., swelling behavior, biocompatibility, stimuli responsiveness, functionality, etc.) have deemed them ideal platforms for removal of environmental contaminants, detoxification, and reduction of body burden from exogenous chemical exposures for prevention of disease initiation, and advanced treatment of chronic diseases, including cancer, diabetes, and cardiovascular disease. In this review, three main junctures where the use of hydrogel and hydrogel nanocomposite materials can intervene to positively impact human health are highlighted: 1) preventing exposures to environmental contaminants, 2) prophylactic treatments to prevent chronic disease initiation, and 3) treating chronic diseases after they have developed.

show abstract

Section: Inorganic Pollutant Removalmentioning

confidence: 99%

Section: Inorganic Pollutant Removalmentioning

confidence: 99%

Section: Treating the Environment To Prevent Human Exposure To Enviro...mentioning

confidence: 99%

See 1 more Smart Citation

Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment

Gutiérrez

Frazar

Klaus

et al. 2021

Adv Healthcare Materials

View full text Add to dashboard Cite

show abstract

“…Crosslinked chitosan/PNVI hydrogel is another example to PNVI containing adsorbents used for water purification. Cr 6+ ion and the organic dye reactive black were successfully adsorbed on the aforementioned gels 23 . Poly(vinyl benzyl chloride‐co‐ethylene glycol dimethacrylate [EGDMA]) (10%) (PVBC) resin grafted with PNVI removed dyes from solution at ppm level 24 .…”

Section: Introductionmentioning

confidence: 99%

Pullulan/poly(N‐vinylimidazole) cryogel: An efficient adsorbent for methyl orange

Hezarkhani

Ustürk

Özbilenler

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Pullulan/poly(N‐vinylimidazole) (PNVI) hybrid cryogels were synthesized under free radical polymerization and chemical crosslinking conditions in an alkaline, aqueous solution of pullulan (PUL), N‐vinylimidazole (NVI), ammonium persulfate and epicholorohydrin (ECH) at −18°C. PUL and PNVI cryogels alone were also synthesized under similar conditions. Optimum cryogel formation conditions were determined by considering product yields and gel fractions of the samples. The products were characterized by elemental analysis, FTIR‐ATR spectrometry, Thermal gravimetric analysis, and scanning electron microscopy (SEM) analyses. It has been found that PUL/PNVI hybrid samples bear improved physicochemical properties compared to ECH crosslinked PUL and PNVI samples alone. They act as hydrogels in aqueous medium reaching equilibrium swelling capacity values of the order of 600%. Dried PUL/PNVI cryogels show higher thermal stability than the dried cryogels of the parent polymers and maintain their physical integrity over a prolonged time period. Macroporous morphology was revealed by SEM analysis. Having 54.2 mg/g maximum equilibrium adsorption capacity in 200 ppm methyl orange solution and maintaining 95% of its adsorption capacity at the end of seven consecutive adsorption/desorption cycles, PUL/PNVI cryogel proved to be an efficient and durable dye adsorbent using methyl orange as the model compound in aqueous solution.

show abstract

“…Owing to the high potential toxicity and carcinogenicity, heavy metals such as Cr(VI), Cd(II), Pb(II), Hg(II), As(V) and Ni(II) are known as the important pollutants present in the environment nowadays. Among them, chromium (VI) is highly toxic and carcinogenic causing severe damages to biological systems [2]. On the other hand, an increase in the intake of Ni(II) can lead to nasopharynx, chronic bronchitis, lung, and dermatological diseases and birth defects while Cd(II) have been recognized as a substance that is teratogenic and carcinogenic to human body and have cause several serious problems such as liver, kidney, brain, lungs, heart, testes damages and disruption of the nervous system [3].…”

Section: Introductionmentioning

confidence: 99%

Poly (N-vinyl Imidazole)/Nitrogen-Doped Graphene Quantum Dot Hydrogel Adsorbent With Remarkable Capability for Metal Ion Removal From Aqueous Systems

Massoudi

Bagheri

Hosseini

2021

Preprint

View full text Add to dashboard Cite

The present work studies the adsorptive removal of cadmium, nickel and chromium ions from an aqueous solution using a highly efficient nanocomposite adsorbent hydrogel. pH-sensitive nanocomposite hydrogels prepared easily by the free radical polymerization of N‑vinyl imidazole (VI) monomer using N, N′- methylene-bis-acrylamide (MBA) and dicationic imidazolium-based (DIL) cross-linkers with molar ratios of monomer/cross-linker in the presence of 0.0, 0.9 and 4.0 wt.% nitrogen doped graphene quantum dots (NGQD). The prepared hydrogel (PVI/NGQD) with higher swelling degree (V-D-G1) with molar ratio of VI/DIL=24 and 4.0 wt.% NGQD was a prominent candidate for adsorption study of three elements (Cd, Ni, and Cr) from the solution. FT-IR, DSC, XRD, SEM, and EDS analysis were used to characterize the structure and the surface morphology of adsorbent before and after the metal ions adsorption. The effects of pH, initial concentration of ions and contact time on the adsorption capacity of the hydrogel were also studied. Adsorption of ions were investigated at pH 1.0, 7.0 and 9.0 and maximum removal efficiencies for Cd(II), Ni(II) and Cr(VI) ions (75%, 94.6% and 70.9%) were achieved at pH=7.0 and optimum ions concentration and contact time of 1000 mg/L, and 40, 40 and 150 min, respectively. The maximum adsorption capacity values of V-D-G1 is found to be 5000, 5000 and 370.370 mg/g for Cd(II), Ni(II) and Cr(VI), respectively. The adsorption data were used to study the adsorption kinetic and isotherm models in which Langmuir model and pseudo-first order model showed the better applicability.

show abstract

Removal of toxic pollutants from aqueous media using poly (vinyl imidazole) crosslinked chitosan synthesised through microwave assisted technique

Cited by 36 publications

References 33 publications

Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment

Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment

Pullulan/poly(N‐vinylimidazole) cryogel: An efficient adsorbent for methyl orange

Poly (N-vinyl Imidazole)/Nitrogen-Doped Graphene Quantum Dot Hydrogel Adsorbent With Remarkable Capability for Metal Ion Removal From Aqueous Systems

Contact Info

Product

Resources

About