Removal of 2,4-D from aqueous solutions by adsorption processes using two biopolymers: chitin and chitosan and their optical properties

Adsorption of 2,4-D on magnetic graphene and mechanism study

“…[3,52]. All of values were lower than 1, which was a good indicator that 2,4-D had high affinity with FGN [4].…”

“…detected in surface and ground water all over the world [3]. It can not only pose a threat to aquatic life and ecosystem [4], but also was proved to be toxic to humans and animals [5]. Accordingly, the removal of 2,4-D from environment became an urgent issue.…”

“…Among these methods, adsorption was frequently used because of its unique advantageous, such as low cost, simplicity in operation and fewer harmful secondary products [10]. Scientists have investigated the removal of 2,4-D by various adsorbents e.g., activated carbon [3], chitosan [4], resin [5] and bentonite [11]. However, activated carbon, the main conventional adsorbent used in adsorption process, had a high production and regeneration costs [12].…”

Electrophoretic deposition of chitosan/Bioglass® and chitosan/Bioglass®/TiO2 composite coatings for bioimplants

“…Chitin is the second most everywhere natural polysaccharide on the Earth after cellulose and it is composed of β (1-4)-linked 2-acetamido-2-deoxy-β-Dglucose (N-acetylglucosamine) [1]. It is structurally identical to cellulose, but it has acetamide groups (-NHCOCH 3 ) at the C-2 positions. The main derivative of chitin is chitosan, a linear polymer of α (1-4)-linked 2-amino-2-deoxy-β-D-glucopyranose which is easily derived by alkaline N-deacetylation.…”

“…Chitosan is one of the most promising natural biopolymers for biomedical applications including tissue engineering and biomedical coatings [2][3][4][5][6][7] and it has attracted considerable interest in the biomedical field because of its excellent biodegradability, biocompatibility, antimicrobial activity and ability to accelerate wound healing properties [2][3][4][5][6].…”