What does this research mean for the field?

The feedstock source and physical characteristics of commercial chitosans significantly affect their efficacy in removing phosphate and nitrate from water, with crustacean-shell-derived chitosans consistently outperforming mushroom-derived variants. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To assess how chitin source and physical characteristics influence the capacity of commercial chitosans to remove phosphate and nitrate from water under various pH conditions.

August 28, 2026ChemosphereOpen Access

Investigation of chitosans for water treatment: Effects of feedstock and synthesis on contaminant removal

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Authors

BNBanuchandra NagarajaBoise State University KRKrishna R. ReddyJawaharlal Nehru Technological University, Hyderabad APAngelica M. PalominoKnoxville College

Discussion

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Implication

Laboratory experimental study demonstrates variable phosphate and nitrate removal across commercial chitosans, indicating feedstock source affects water treatment efficacy.

Key Points

To assess how chitin source and physical characteristics influence the capacity of commercial chitosans to remove phosphate and nitrate from water under various pH conditions.
Characterized four commercial chitosans derived from crustacean shells and mushrooms using scanning electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, and zeta potential analysis.
Conducted batch adsorption experiments across different pH levels and evaluated removal behavior using Langmuir, Freundlich, and Temkin isotherm models.
Langmuir-derived adsorption capacities at unadjusted pH ranged from 17.6 to 41.6 mg/kg for phosphate and 59.8 to 129.8 mg/kg for nitrate, with the Langmuir model fitting phosphate and the Freundlich model fitting nitrate best in most cases.
Mushroom-derived chitosan and flake-form chitosan showed consistently lower contaminant removal capacities than crustacean-derived alternatives.
Adsorption capacities decreased with increasing pH (lowest at pH 11), with no consistent link observed between contaminant removal and molecular weight, degree of deacetylation, or zeta potential.

Cite This Study

Nagaraja et al. (2026) studied this question.

synapsesocial.com/papers/6a914631d15324a1df3a99ee https://doi.org/10.1016/j.chemosphere.2026.145070

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Implication

Laboratory experimental study demonstrates variable phosphate and nitrate removal across commercial chitosans, indicating feedstock source affects water treatment efficacy.

Investigation of chitosans for water treatment: Effects of feedstock and synthesis on contaminant removal

Discussion

Member takes

Implication

Key Points

Cite This Study

Investigation of chitosans for water treatment: Effects of feedstock and synthesis on contaminant removal

Discussion

Member takes

Implication

Key Points

Cite This Study

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