Recent advances in cellulose, chitosan, and alginate based biopolymeric composites for adsorption of heavy metals from wastewater

Comprehensive assessment of carbon-, biomaterial- and inorganic-based adsorbents for the removal of the most hazardous heavy metal ions from wastewater

“…Chitosan, which is obtained by de-acetylating chitin, and sodium alginate, extracted from brown algae, are also notable adsorbents for heavy metal ions. 57 Employing cheap and renewable materials such as chitosan-calcium carbonate nanocomposites (Cs/CaCO 3 ) show significant adsorption capacity of 62.11 mg g −1 for Cr( iii ), 83.33 for Cd( ii ), and 98.03 for Pb( ii ) within short removal times. 58 …”

“…• Naturally available inexpensive resources for biopolymers have multiple active sites for adsorption but the efficiency of the adsorption process is hindered by their low mechanical strength, low surface areas, and poor stability. 57 Also, biopolymers may undergo degradation under harsh treatment conditions, compromising their effectiveness. Although biopolymers offer sustainability benefits, their drawbacks must be addressed to ensure efficient contaminant removal in wastewater treatment.…”

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

“…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].…”

A Facile One-Step Synthesis of Polystyrene/Cellulose (PS@MFC) Biocomposites for the Preparation of Hybrid Water-Absorbing Sponge Materials

“…The production of packaging materials [9], the creation of disposable biodegradable tableware [10], the development of woven and nonwoven fiber materials [11,12], the creation of energy storage devices [13,14], and the preparation of composite materials for biomedical applications [15][16][17] have become widespread. Cellulose-based biocomposites have recently been of particular interest for the elaboration of porous sorption materials suitable for wastewater treatment [18][19][20], seawater desalination [21][22][23][24], air filtration [25], adsorption of various dyes [20], and materials designed to collect oil spills from offshore fields [26].…”