http://sealight.persiangig.com/document/1.pdf

Use of iron oxide nanomaterials in wastewater treatment: a review.

Effective removal of heavy metal ions Cd2+, Zn2+, Pb2+, Cu2+ from aqueous solution by polymer-modified magnetic nanoparticles

Application of magnetic chitosan composites for the removal of toxic metal and dyes from aqueous solutions

Magnetic EDTA-modified chitosan/SiO2/Fe3O4 adsorbent: Preparation, characterization, and application in heavy metal adsorption

Chitosan is considered to be one of the most promising and applicable materials in adsorption applications. The existence of amino and hydroxyl groups in its molecules contributes to many possible adsorption interactions between chitosan and pollutants (dyes, metals, ions, phenols, pharmaceuticals/drugs, pesticides, herbicides, etc.). These functional groups can help in establishing positions for modification. Based on the learning from previously published works in literature, researchers have achieved a modification of chitosan with a number of different functional groups. This work summarizes the published works of the last three years (2012-2014) regarding the modification reactions of chitosans (grafting, cross-linking, etc.) and their application to adsorption of different environmental pollutants (in liquid-phase).

https://www.mdpi.com/1660-3397/13/1/312/pdf

Recent Modifications of Chitosan for Adsorption Applications: A Critical and Systematic Review

Biosorption of copper(II) by immobilizing Saccharomyces cerevisiae on the surface of chitosan-coated magnetic nanoparticles from aqueous solution.

Mechanisms underlying the photocatalytic degradation pathway of ciprofloxacin with heterogeneous TiO2

Removal of lead(II) from aqueous solution with ethylenediamine-modified yeast biomass coated with magnetic chitosan microparticles: Kinetic and equilibrium modeling

Characterization of Cr(VI) resistance and reduction by Pseudomonas aeruginosa

Through the immobilized biosorption of activated carbon and Paenibacillus polymyxa GA1 by sodium alginate, this paper take advantage of the orthogonal experiment to investigate the adsorption characteristics of sodium alginate. According to the research, the optimal preparation conditions were as following: the mass fraction of sodium alginate was 2.5%; the amount of carbon and bacteria was 1:20 and 1:2, respectively; under the preparation condition, the adsorption rate could reach to 93.74%. The adsorption conditions of the immobilized beads were: pH 5, temperature 30 degrees C and Pb2+ with an initial concentration of 300 mg x L(-1). Moreover, the immobilized activated carbon and GA1 improved their application range of pH, temperature and the initial concentration of Pb2+. Based on the equilibrium curve, it showed that the adsorption of Pb2+ was a rapid process within 30 min and gradually reached leveling within 2 h. What's more, the equilibrium curve could be well described by Langmuir model and Freundlich model, which be consisted mainly of monolayer adsorption, and the maximum monolayer adsorption amount was 370.37 mg x g(-1). Finally, the desorption result showed that the immobilized beads could be recycled effectively.

Qing-qing Peng

Papers

Biosorption of copper(II) by immobilizing Saccharomyces cerevisiae on the surface of chitosan-coated magnetic nanoparticles from aqueous solution.

Mechanisms underlying the photocatalytic degradation pathway of ciprofloxacin with heterogeneous TiO2

Removal of lead(II) from aqueous solution with ethylenediamine-modified yeast biomass coated with magnetic chitosan microparticles: Kinetic and equilibrium modeling

Characterization of Cr(VI) resistance and reduction by Pseudomonas aeruginosa

Optimization immobilizing activated carbon and bacteria by sodium alginate and its character of adsorption of Pb2