Recent advances in removal of inorganic anions from water by chitosan-based composites: A comprehensive review

Yazdi, Fatemeh; Anbia, Mansoor; Sepehrian, Mohammad

doi:10.1016/j.carbpol.2023.121230

Cited by 14 publications

(3 citation statements)

References 282 publications

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“…According to Dithmer et al [41], most of the sequestered P by LMB was as rhabdophane (LaPO 4 •nH 2 O, n ≤ 3) and 26% was as loosely bound redox-sensitive P species on the surface of rhabdophane. Chitosan in LMA&C has a high density of amino groups that give it a positive charge, which attracts negatively charged anions [21]. In addition, the bentonite in LMB and attapulgite in LMA&C all have Al components, which likely remove P through the formation of Al-P.…”

Section: Variations In P Fractionation In Sedimentmentioning

confidence: 99%

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Effect of Combined Application of Lanthanum-Based Capping Material and Biochemical Oxidant on Control of Internal Phosphorus

Liu,

Geng,

et al. 2024

Water

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In situ capping and biochemical oxidation are two of the most commonly used methods for internal phosphorus (P) control, but there are few studies on the combined use of these two methods. In this study, two lanthanum (La)-based materials, La-modified bentonite (LMB) and the La-modified attapulgite and chitosan composite (LMA&C), were combined with calcium nitrate (CN) to investigate the effect on sediment P control. Results showed that SRP removal rates by LMB+CN and LMA&C+CN were much higher than that by LMB, LMA&C and CN alone. LMB+CN and LMA&C+CN decreased DGT-labile P flux both in overlying water and surface 65 mm sediment, while LMB and LMA&C had an effect only on overlying water and surface 10~40 mm sediment, and CN was effective only on sediments. LMB and LMA&C transformed NH4Cl-P, BD-P, NaOH-SRP and NaOH-NRP in surface 20 mm sediment to HCl-P and Residual-P on day 60. CN transformed NaOH-SRP and NaOH-NRP to BD-P, resulting in the increase in NH4Cl-P. LMB+CN and LMA&C+CN sequestered P in the surface 20 mm mainly as HCl-P and Residual-P, and mainly as BD-P in −20~−60 mm. Results indicate that the combination of capping by La-based material and oxidation by CN is a promising method for sediment P control.

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Section: Variations In P Fractionation In Sedimentmentioning

confidence: 99%

“…Chitosan is a low-cost, nontoxic, biodegradable and biocompatible polymer, and it has a high density of amino groups that give it a positive charge, which can adsorb phosphate in water [21]. Using the composite of La-based material and chitosan as a capping agent is a promising method [22].…”

Section: Introductionmentioning

confidence: 99%

Effect of Combined Application of Lanthanum-Based Capping Material and Biochemical Oxidant on Control of Internal Phosphorus

Liu,

Geng,

et al. 2024

Water

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“…In the adsorption reaction of hexavalent chromium, NH 2 has demonstrated functional reactivity [ 21 ]. Chitosan, derived from the natural polysaccharide chitin, is a high-molecular-weight product known for its non-toxic and biocompatible properties.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorptivity of Hexavalent Chromium in Aqueous Solutions Using CTS@nZVI Modified Wheat Straw-Derived Porous Carbon

Deng,

Li,

Ding

et al. 2024

Nanomaterials

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Using KOH-modified wheat straw as the precursor, wheat straw biochar was produced through carbonization at 500 °C. Subsequently, a synthetic material containing nano-zero-valent iron (nZVI) was prepared via liquid phase reduction (nZVI-WSPC). To enhance its properties, chitosan (CTS) was used by crosslinking to form the new adsorbent named CTS@nZVI-WSPC. The impact of CTS on parameters such as mass ratio, initial pH value, and adsorbent dosage on the adsorption efficiency of Cr(VI) in solution was investigated through one-factor experiments. Isotherm adsorption and thermodynamic analysis demonstrated that the adsorption of Cr(VI) by CTS@nZVI-WSPC conforms to the Langmuir model, with a maximum adsorption capacity of 147.93 mg/g, and the adsorption process is endothermic. Kinetic analysis revealed that the adsorption process follows a pseudo-second-order kinetic model. The adsorption mechanism, as elucidated by SEM, FTIR, XPS, and XRD, suggests that the process may involve multiple mechanisms, including pore adsorption, electrostatic adsorption, chemical reduction, and surface chelation. The adsorption capacity of Cr(VI) by CTS@nZVI-WSPC remains high after five cycles. The adsorbent is simple to operate, economical, efficient, and reusable, making it a promising candidate for the treatment of Cr(VI) in water.

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A review on heavy metal biosorption utilizing modified chitosan

Shankar,

Joshi,

Srivastava

2023

Environ Monit Assess

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Recent advances in removal of inorganic anions from water by chitosan-based composites: A comprehensive review

Cited by 14 publications

References 282 publications

Effect of Combined Application of Lanthanum-Based Capping Material and Biochemical Oxidant on Control of Internal Phosphorus

Effect of Combined Application of Lanthanum-Based Capping Material and Biochemical Oxidant on Control of Internal Phosphorus

Enhanced Adsorptivity of Hexavalent Chromium in Aqueous Solutions Using CTS@nZVI Modified Wheat Straw-Derived Porous Carbon

A review on heavy metal biosorption utilizing modified chitosan

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