title: Modified pineapple peel cellulose hydrogels embedded with sepia ink for effective removal of methylene blue.
abstract: Novel composite hydrogels based on pineapple peel cellulose and sepia ink were synthesized by homogeneous acetylation of cellulose in ionic liquid 1-butyl-3-methylimidazolium chloride. The structure and morphology of the prepared hydrogels were characterized by Fourier transform infrared spectroscopy, field emission scanning electron microscope, X-ray diffraction, thermogravimetry and differential scanning calorimetry. The effects of acetylation time, acetylation temperature, molar ratio of acetic anhydride/anhydroglucose unit and the additive amount of sepia ink on methylene blue adsorption capacity of the hydrogels embedded with sepia ink were also investigated. Methylene blue adsorption of the hydrogels followed pseudo-second-order kinetic model and sepia ink improved adsorption capacity significantly. The adsorption capacity at equilibrium was increased from 53.72 to 138.25mg/g when the additive amount of sepia ink of the hydrogels was 10%.
authors.affiliation: Department of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China.
authors.forename: Hongjie
authors.initials: H
authors.lastname: Dai
authors.affiliation: Department of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China. Electronic address: fehhuang@scut.edu.cn.
authors.forename: Huihua
authors.initials: H
authors.lastname: Huang
mesh_terms: D000327:Adsorption; D031230:Ananas / Q000737:chemistry*; D000818:Animals; D002482:Cellulose / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D020100:Hydrogels / Q000737:chemistry*; D007281:Ink; D007700:Kinetics; D008751:Methylene Blue / Q000737:chemistry / Q000302:isolation & purification*; D049833:Sepia / Q000737:chemistry; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods* / Q000592:standards
chemical_list: D002482:Cellulose; D020100:Hydrogels; D008751:Methylene Blue; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Acetylation; Characterization; Hydrogels; Methylene blue; Pineapple peel cellulose; Sepia ink