title: Removal of azo dye by a highly graphitized and heteroatom doped carbon derived from fish waste: Adsorption equilibrium and kinetics.
abstract: A highly graphitized and heteroatom doped porous carbon was prepared from fish waste in the present study. The morphology and chemical composition of the resultant porous carbon were characterized by SEM-EDS, TEM, BET, XRD and Raman measurement. The prepared porous carbon was employed as an adsorbent for acid orange 7, a typical azo dye, removal from aqueous solution. The results showed that the porous carbon had ultrahigh surface area of 2146 m(2)/g, a high degree of graphitization structure and naturally doped with nitrogen and phosphorous. The maximum adsorption capacity of acid orange 7 reached 285.71 mg/g due to unique property of the prepared porous carbon. In addition, acid orange 7 adsorption onto the porous carbon well followed pseudo-second-order kinetics model and acid orange 7 diffusion in micropores was the potential rate controlling step.
authors.affiliation: Laboratory of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, China. Electronic address: zgliu@rcees.ac.cn.
authors.forename: Zhengang
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Laboratory of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Liu
authors.affiliation: Laboratory of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, China.
authors.forename: Nana
authors.initials: N
authors.lastname: Peng
authors.affiliation: Laboratory of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Gai
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry*; D001557:Benzenesulfonates / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D004058:Diffusion; D019649:Food Industry; D007220:Industrial Waste; D007700:Kinetics; D009584:Nitrogen / Q000737:chemistry; D010758:Phosphorus / Q000737:chemistry; D016062:Porosity; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D001391:Azo Compounds; D001557:Benzenesulfonates; D004396:Coloring Agents; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D010758:Phosphorus; D002244:Carbon; D009584:Nitrogen; C014722:2-naphthol orange
keywords: Adsorption; Carbon material; Heteroatom-doping; Response surface methodology; Waste biomass; Wastewater