title: Adsorption study of copper (II) by chemically modified orange peel.
abstract: An adsorbent, the chemically modified orange peel, was prepared from hydrolysis of the grafted copolymer, which was synthesized by interaction of methyl acrylate with cross-linking orange peel. The presence of poly (acrylic acid) on the biomass surface was verified by infrared spectroscopy (IR), scanning electron microscopy (SEM) and thermogravimetry (TG). Total negative charge in the biomass surface and the zeta potentials were determined. The modified biomass was found to present high adsorption capacity and fast adsorption rate for Cu (II). From Langmuir isotherm, the adsorption capacity for Cu (II) was 289.0 mg g(-1), which is about 6.5 times higher than that of the unmodified biomass. The kinetics for Cu (II) adsorption followed the pseudo-second-order kinetics. The adsorbent was used to remove Cu (II) from electroplating wastewater and was suitable for repeated use for more than four cycles.
authors.affiliation: School of Metallurgical Science and Engineering, Central South University, Changsha, China.
authors.forename: Ningchuan
authors.initials: N
authors.lastname: Feng
authors.forename: Xueyi
authors.initials: X
authors.lastname: Guo
authors.forename: Sha
authors.initials: S
authors.lastname: Liang
mesh_terms: D000327:Adsorption; D018533:Biomass; D032084:Citrus sinensis / Q000737:chemistry*; D003247:Conservation of Natural Resources / Q000379:methods*; D003300:Copper; D007700:Kinetics; D011109:Polymethacrylic Acids / Q000737:chemistry*; D055672:Static Electricity; D014873:Water Pollutants / Q000302:isolation & purification*
chemical_list: D011109:Polymethacrylic Acids; D014873:Water Pollutants; D003300:Copper