Adsorption of Cu(II), Cd(II), and Pb(II) from aqueous single metal solutions by sugarcane bagasse and mercerized sugarcane bagasse chemically modified with succinic anhydride.

Submitted by Karine Ribeiro (karinelg.ribeiro@gmail.com) on 2015-04-09T19:20:23Z No. of bitstreams: 1 ARTIGO_AdsorptionPbSolutions.pdf: 289518 bytes, checksum: c092bc62281882636a346338923152a8 (MD5)Approved for entry into archive by Oliveira Flávia (flavia@sisbin.ufop.br) on 2015-04-09T20:12:53Z (GMT) No. of bitstreams: 1 ARTIGO_AdsorptionPbSolutions.pdf: 289518 bytes, checksum: c092bc62281882636a346338923152a8 (MD5)Made available in DSpace on 2015-04-13T18:53:26Z (GMT). No. of bitstreams: 1 ARTIGO_AdsorptionPbSolutions.pdf: 289518 bytes, checksum: c092bc62281882636a346338923152a8 (MD5) Previous issue date: 2008This work describes the preparation of new chelating material from mercerized sugarcane bagasse. The first part treats the chemical modification of non-mercerized sugarcane bagasse (SCB) and twice-mercerized sugarcane bagasse (MMSCB) with succinic anhydride. Mass percent gains (mpg) and degrees of succinylation (DS) of succinylated non- and twice-mercerized sugarcane bagasse 1 (SCB 1 and MMSCB 1) were calculated. MMSCB 1 exhibited an increase in mpg and DS of 49.2% and 0.9 mmol/g in relation to SCB 1. SCB 2 and MMSCB 2 were obtained by treatment of MMSCB 1 and SCB 1 with bicarbonate solution to release the carboxylate functions and characterized by FTIR. The second part evaluates and compares the adsorption capacity of SCB 2 and MMSCB 2 for Cu2+, Cd2+ and Pb2+ ions in an aqueous single metal solution. Adsorption isotherms were developed using Langmuir model. MMSCB 2 exhibited an increase in Qmax for Cd2+ (43.6 mg/g) and Pb2+ (83.3 mg/g) in relation to SCB 2