The utilization of chitin and chitosan as green modifiers in nanocomposite membrane for water treatment

Mamah, Stanley Chinedu; Goh, Pei Sean; Ng, Be Cheer; Abdullah, Mohamad Sohaimi; Ismail, Ahmad Fauzi; Samavati, Zahra; Ahmad, Nor Akalili; Raji, Yusuf Olabode

doi:10.1016/j.jwpe.2024.105394

Cited by 1 publication

(1 citation statement)

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“…Among the various adsorbents, composite materials synthesized using organic templates have shown promise. Organic templates like chitosan, a biopolymer derived from chitin [12], are particularly effective due to their biodegradability, biocompatibility, and functional groups (-NH 2 and -OH) that enhance metal ion adsorption [13][14][15]. Furthermore, natural organic materials such as cellulose, alginate, and gelatin have also been utilized as templates for the preparation of composite materials for water pollution treatment [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Strontium Ferrite Nanoparticles with Novel Chitosan–Schiff Base Ligand for Efficient Removal of Pb(II) Ions from Aqueous Media

Al-Wasidi,

Abdelrahman

2024

Inorganics

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Lead contamination in water poses significant health risks, making its removal imperative. In this study, magnetic strontium ferrite (SrFe12O19) nanoparticles were facilely synthesized by the Pechini sol–gel method and subsequently functionalized with a novel chitosan–Schiff base ligand to obtain a novel inorganic/organic nanocomposite for removing Pb(II) ions from aqueous solutions. The chitosan–Schiff base ligand was synthesized through the reaction of chitosan with 2,4,5-trihydroxybenzaldehyde. The presence of two X-ray diffraction (XRD) peaks at 2Ɵ = 10.5° and 2Ɵ = 20.5°, alongside the characteristic SrFe12O19 peaks, confirmed the functionalization of the nanoparticles with the ligand. Additionally, a significant decrease in the saturation magnetization value from 40.29 emu/g in pure SrFe12O19 nanoparticles to 17.32 emu/g in the nanocomposite further verified the functionalization. The presence of carbon (C) and nitrogen (N) atoms in the energy-dispersive X-ray (EDX) pattern of the nanocomposite, in addition to iron (Fe), strontium (Sr), and oxygen (O), also confirmed the functionalization. The nanocomposite’s maximum adsorption capacity for Pb(II) ions was 390.63 mg/g. Moreover, the adsorption process is endothermic, spontaneous, and chemical, occurring via complexation with -C=N and -OH groups, and it fits well with the Langmuir equilibrium isotherm and the pseudo-second-order kinetic equation.

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