Adsorption of Cu(II), Cd(II) and Ni(II) ions by cross-linked magnetic chitosan-2-aminopyridine glyoxal Schiff's base

Adsorption of Ni(II) ion on Ni(II) ion-imprinted magnetic chitosan/poly(vinyl alcohol) composite

“…The CTS composites, one of the CTS-based materials, are economically feasible because they are easy to prepare and involve inexpensive chemical reagents. These CTS composites have been applied for the adsorption of heavy metal ions, such as CTS/ceramic alumina composites, CTS/perlite composites [7,8], CTS/magnetite composites [9][10][11][12], CTS/cotton fiber composites [13], CTS/ poly(vinyl alcohol) (PVA) composites [14], CTS/poly(vinyl chloride) (PVC) composite [15], and CTS/bentonite composites. Although some performance of CTS has been improved by adding new component, there are some problems for the CTS composites, such as the adsorption capacity which generally decreases compared with pure CTS.…”

“…Furthermore, the blends have been applied for the adsorption of heavy metal ions [3,5] and dye [17]. Magnetic separation has been one of the promising ways for an environmental purification technique because of producing no contaminants such as flocculants and having capability of treating a large amount of wastewater within a short time [3,[9][10][11][12]. Magnetic CTS/PVA composite and Ni(II)-imprinted magnetic CTS/PVA composite (Ni(II)-IMCP) have not been found in the present literature for adsorbing Ni(II) ions.…”

Preparation of Pb(II)-Carboxymethyl Chitosan Pec PEGDE Film as Selective Asorbent for Removal Pb(II) Ion

“…The Pb(II)-CCPecP adsorbent was prepared according to the previously reported procedure with slight modification 16 . In this work, the modification was carried out with replacing the crosslinking agent with Poly(ethylene glycol) Diglycidyl Ether (P).…”

“…To solve these problems, chemically crosslinked chitosan has be required. There are many crosslinking agent such as glutaraldehyde, epichlorohydrin, ethylene glycol diglycidyl ether, bis phenol A diglycidyl ether can be used to cross-link chitosan [12][13][14][15][16] . Reaction of chitosan with pectin able to make a stable polyelectrolyte complex that applied as an metal adsorbent 17 .…”

Preparation and characterization of dialdehyde 2, 3-diaminopyridine starch chelating polymer and its sorption potential for Cd(II), Cu(II) and Ni(II) ions in aqueous media

“…Adsorption technique has received much attention because it allows the use of many materials that are environmental friendly and have low production cost (Cegłowski and Schroeder, 2015). Adsorption studies on the natural polysaccharide, adsorbents based on starch and other low cost materials have become a focus of study in the removal of heavy metals such as wheat shells (Basci et al, 2003), sweet potato starch (Fang et al, 2004), wheat bran (Farajzadeh and Monji, 2004), starch and chitin (Crini, 2005), tea leaves (Ahluwalia and Goyal, 2005), pulping wastes (Celik and Demirbas, 2005), wood based adsorbent (Argun and Dursun, 2006), okra (Hashem, 2007), succinylated starch (Awokoya and Moronkola, 2012), chitosan (Monier et al, 2012), corn starches (Awokoya and Moronkola, 2013), jujube , porous starch (Ma et al, 2015), potato starch (Feizi and Jalali, 2015) e.t.c. Some of the advantages of using these polysaccharide materials for wastewater treatment include simple technique, requires little processing, good adsorption capacity, selective adsorption of heavy metal ions, low cost, free availability and easy regeneration.…”