title: Preparation of cationic waste paper and its application in poisonous dye removal.
abstract: Cationic paper was prepared by reaction of paper with 2,3-epoxypropyltrimethylammonium chloride in aqueous suspension, and tested as low-cost adsorbent for wastewater treatment. The experimental results revealed that anionic dyes (Acid Orange 7, Acid Red 18, and Acid Blue 92) were adsorbed on the cationic paper nicely. The maximum amount of dye Acid Orange 7 adsorbed on cationic paper was 337.2 mg/g in experimental conditions. The effects of initial dye concentration, temperature, and initial pH of dye solution on adsorption capacity of cationic paper were studied. The pseudo-first-order and pseudo-second-order kinetic models were applied to describe the kinetic data. The Freundlich and Langmuir adsorption models were used to describe adsorption equilibrium. The thermodynamic data indicated that the adsorption process of dye on cationic paper occurred spontaneously.
authors.affiliation: Department of Chemistry, Anhui Medical University, Hefei 230026, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Yang
authors.forename: Xiaojie
authors.initials: X
authors.lastname: Song
authors.forename: Lifeng
authors.initials: L
authors.lastname: Yan
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry; D001557:Benzenesulfonates / Q000737:chemistry; D004396:Coloring Agents / Q000737:chemistry*; D004852:Epoxy Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D009281:Naphthalenes / Q000737:chemistry; D009282:Naphthalenesulfonates / Q000737:chemistry; D010209:Paper; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014866:Waste Products; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: C555957:Acid Blue 92; D001391:Azo Compounds; D001557:Benzenesulfonates; D004396:Coloring Agents; D004852:Epoxy Compounds; D009281:Naphthalenes; D009282:Naphthalenesulfonates; D000644:Quaternary Ammonium Compounds; D014866:Waste Products; D014874:Water Pollutants, Chemical; C045006:glycidyl trimethylammonium; C014722:2-naphthol orange; C576297:ponceau 4R