title: Efficient removal of dyes in water using chitosan microsphere supported cobalt (II) tetrasulfophthalocyanine with H2O2.
abstract: A new efficient catalyst, CoTSPc@chitosan, was developed by immobilizing water soluble cobalt (II) tetrasulfophthalocyanine onto adsorbent chitosan microspheres covalently for the heterogeneous catalytic oxidation of C. I. Acid Red 73 with H(2)O(2). The result indicated that the COD removal and discoloration of C. I. Acid Red 73 made 55 and 95% respectively in the presence of CoTSPc@chitosan with H(2)O(2) in 4h. In addition, CoTSPc@chitosan-H(2)O(2) system could proceed efficiently in a relatively wide pH range and remain high catalytic activity after 6 reuse cycles. Furthermore, the adsorption study of CoTSPc@chitosan confirmed that chitosan was an outstanding support which contributed a lot to the removal reaction. In conclusion, the combination of adsorption process and catalytic oxidation made the CoTSPc@chitosan-H(2)O(2) system achieve a simple, efficiently and environmentally friendly water treatment.
authors.affiliation: Institute of Environmental Science, Zhejiang University, Hangzhou 310029, China.
authors.forename: Chensi
authors.initials: C
authors.lastname: Shen
authors.forename: Shufang
authors.initials: S
authors.lastname: Song
authors.forename: Lili
authors.initials: L
authors.lastname: Zang
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Kang
authors.forename: Yuezhong
authors.initials: Y
authors.lastname: Wen
authors.forename: Weiping
authors.initials: W
authors.lastname: Liu
authors.forename: Liusong
authors.initials: L
authors.lastname: Fu
mesh_terms: D000327:Adsorption; D001391:Azo Compounds; D048271:Chitosan; D003035:Cobalt; D004396:Coloring Agents / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D007220:Industrial Waste / Q000517:prevention & control*; D008863:Microspheres; D009282:Naphthalenesulfonates; D010084:Oxidation-Reduction; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D007211:Indoles; D007220:Industrial Waste; D009282:Naphthalenesulfonates; D014874:Water Pollutants, Chemical; C028418:tetrasulfophthalocyanine; D003035:Cobalt; C408149:brilliant crocein; D048271:Chitosan; D006861:Hydrogen Peroxide