Recent Advances in the Synthesis, Properties, and Applications of Modified Chitosan Derivatives: Challenges and Opportunities

Boominathan, T.; Sivaramakrishna, Akella

doi:10.1007/s41061-021-00331-z

Cited by 38 publications

(18 citation statements)

References 207 publications

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“…A review of the literature reveals that studies describing the preparation of adsorbent materials for lead ion removal have emphasized adsorbent systems with a powder-like morphology (Beni and Esmaeili, 2020;Pandey, 2020;Shakoor et al, 2020;Boominathan and Sivaramakrishna, 2021;Shabtai et al, 2021). Despite the practical limitations of powdered adsorbents in column-based systems (Mohamed and Wilson, 2015;Patel, 2019), there are sparse reports that detail other types of adsorbent morphology for chitosan-based materials such as pelletized forms, as described herein (Syauqiah et al, 2015;Mohamed et al, 2017Mohamed et al, , 2020.…”

Section: Resultsmentioning

confidence: 99%

Design of Sustainable Biomaterial Composite Adsorbents for Point-of-Use Removal of Lead Ions From Water

et al. 2022

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The uncontrolled release of contaminants into aquatic environments has created the need for improved adsorbent materials for point-of-use (POU) treatment applications to address water security. The goal of this study was to prepare a low-cost sustainable adsorbent material with tailored Pb(II) adsorption properties in aqueous media. Several types of ternary composite adsorbents were prepared that contain chitosan, kaolinite, and a biomass additive (oat hulls or torrefied wheat straw), along with spectral characterization and thermal analysis of the adsorbents. The adsorption properties of the ternary composites with lead nitrate were studied at equilibrium using batch mode and dynamic conditions with a fixed bed column under variable experimental settings [flow rate, bed height, and Pb(II) concentration]. The adsorption capacity at equilibrium in synthetic or tap water was found to depend on the relative composition (wt.%) of additive components in the composite. The optimal composite adsorbent for maximum Pb(II) removal had the following composition (wt.%): chitosan (50%) + kaolinite (10%) + oat hulls (40%). Using this adsorbent, the dynamic adsorption properties with lead nitrate were studied in a fixed bed column at pH 6.5 and 295 K to reveal optimized Pb(II) removal that concur with the results obtained from batch studies. The sustainability of the biocomposite adsorbent was demonstrated with the use of relatively low-cost and locally available materials, whilst achieving favorable Pb(II) adsorption properties. The facile preparation of the optimal biocomposite adsorbent herein is proposed for use as a disposable POU filter media technology for the removal of lead and other multivalent heavy metal cations, including organic contaminants such as cationic dyes and agrochemicals.

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Section: Resultsmentioning

confidence: 99%

Design of Sustainable Biomaterial Composite Adsorbents for Point-of-Use Removal of Lead Ions From Water

et al. 2022

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“…Chitosan biopolymer is a remarkable substance for cosmetics, food, medicine, and pharmacy because of these properties [82]. As a result, a number of researchers in a variety of fields have contributed to the field of chitosan-based nanocomposites, and a variety of chitosan-based materials have been made and evaluated for bioactivity studies [89,90].…”

Section: Noncytotoxicity and Permeabilitymentioning

confidence: 99%

Pharmaceutical and drug delivery applications of chitosan biopolymer and its modified nanocomposite: A review

Kedir

Abdi

Goro

et al. 2022

Heliyon

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“…Chitosan and its derivatives are often prepared as gels, films, particles, and powders in practical applications [ 35 ]. Particulates are the most widely used form of adsorbent because their high specific surface areas result in excellent adsorption capacities [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Xanthate-Modified Magnetic Fe3O4@SiO2-Based Polyvinyl Alcohol/Chitosan Composite Material for Efficient Removal of Heavy Metal Ions from Water

et al. 2022

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Chitosan has several shortcomings that limit its practical application for the adsorption of heavy metals: mechanical instability, a challenging separation and recovery process, and low equilibrium capacity. This study describes the synthesis of a magnetic xanthate-modified polyvinyl alcohol and chitosan composite (XMPC) for the efficient removal and recovery of heavy metal ions from aqueous solutions. The XMPC was synthesized from polyvinyl alcohol, chitosan, and magnetic Fe3O4@SiO2 nanoparticles. The XMPC was characterized, and its adsorption performance in removing heavy metal ions was studied under different experimental conditions. The adsorption kinetics fit a pseudo-second-order kinetic model well. This showed that the adsorption of heavy metal ions by the XMPC is a chemical adsorption and is affected by intra-particle diffusion. The equilibrium adsorption isotherm was well described by the Langmuir and Freundlich equations. The XMPC reached adsorption equilibrium at 303 K after approximately 120 min, and the removal rate of Cd(II) ions was 307 mg/g. The composite material can be reused many times and is easily magnetically separated from the solution. This makes the XMPC a promising candidate for widespread application in sewage treatment systems for the removal of heavy metals.

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Recent Advances in the Synthesis, Properties, and Applications of Modified Chitosan Derivatives: Challenges and Opportunities

Cited by 38 publications

References 207 publications

Design of Sustainable Biomaterial Composite Adsorbents for Point-of-Use Removal of Lead Ions From Water

Design of Sustainable Biomaterial Composite Adsorbents for Point-of-Use Removal of Lead Ions From Water

Pharmaceutical and drug delivery applications of chitosan biopolymer and its modified nanocomposite: A review

Xanthate-Modified Magnetic Fe3O4@SiO2-Based Polyvinyl Alcohol/Chitosan Composite Material for Efficient Removal of Heavy Metal Ions from Water

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