title: Adsorption of Cu(II), Cd(II), and Pb(II) from aqueous single metal solutions by cellulose and mercerized cellulose chemically modified with succinic anhydride.
abstract: This work describes the preparation of new chelating material from mercerized cellulose. The first part treats the chemical modification of non-mercerized cellulose (cell 1) and mercerized cellulose (cell 2) with succinic anhydride. Mass percent gains (mpg) and degree of succinylation (DS) of cell 3 (from cell 1) and cell 4 (from cell 2) were calculated. Cell 4 in relation to cell 3 exhibited an increase in mpg and in the concentration of carboxylic functions of 68.9% and 2.8 mmol/g, respectively. Cells 5 and 6 were obtained by treatment of cells 3 and 4 with bicarbonate solution to release the carboxylate functions and characterized by FTIR. The second part compares the adsorption capacity of cells 5 and 6 for Cu2+, Cd2+, and Pb2+ ions in an aqueous single metal solution. Adsorption isotherms were developed using Langmuir model. Cell 6 in relation to cell 5 exhibited an increase in Qmax for Cu2+ (30.4 mg/g), Cd2+ (86.0 mg/g) and Pb2+ (205.9 mg/g).
authors: Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, 35400-000, Ouro Preto, Minas Gerais, Brazil.
authors: Leandro Vinícius Alves
authors: LV
authors: Gurgel
authors: Osvaldo Karnitz
authors: OK
authors: Júnior
authors: Rossimiriam Pereira de Freitas
authors: RP
authors: Gil
authors: Laurent Frédéric
authors: LF
authors: Gil
mesh_terms: D000327:Adsorption; D002104:Cadmium; D002482:Cellulose; D002854:Chromatography, Paper; D003300:Copper; D003461:Crystallography; D006863:Hydrogen-Ion Concentration; D007854:Lead; D008628:Mercury; D008670:Metals / Q000737:chemistry*; D012996:Solutions; D013387:Succinic Anhydrides; D014867:Water
chemical_list: D008670:Metals; D012996:Solutions; D013387:Succinic Anhydrides; D002104:Cadmium; D014867:Water; D007854:Lead; C031801:succinic anhydride; D003300:Copper; D002482:Cellulose; D008628:Mercury