PMID- 28160707 OWN - NLM STAT- MEDLINE DCOM- 20180309 LR - 20181202 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 494 DP - 2017 May 15 TI - Optimization of cellulose and sugarcane bagasse oxidation: Application for adsorptive removal of crystal violet and auramine-O from aqueous solution. PG - 223-241 LID - S0021-9797(17)30107-8 [pii] LID - 10.1016/j.jcis.2017.01.085 [doi] AB - Cellulose (Cel) and sugarcane bagasse (SB) were oxidized with an H(3)PO(4)-NaNO(2) mixture to obtain adsorbent materials with high contents of carboxylic groups. The oxidation reactions of Cel and SB were optimized using design of experiments (DOE) and response surface methodology (RSM). The optimized synthesis conditions yielded Cox and SBox with 4.8mmol/g and 4.5mmol/g of carboxylic acid groups, respectively. Cox and SBox were characterized by FTIR, TGA, PZC and solid-state (13)C NMR. The adsorption of the model cationic dyes crystal violet (CV) and auramine-O (AO) on Cox and SBox in aqueous solution was investigated as a function of the solution pH, the contact time and the initial dye concentration. The adsorption of CV and AO on Cox was described by the Elovich equation and the pseudo-first-order kinetic model respectively, while the adsorption of CV and AO on SBox was described by the pseudo-second-order kinetic model. Adsorption isotherms were well fitted by the Langmuir and Konda models, with maximum adsorption capacities (Q(max)) of 1117.8mg/g of CV and 1223.3mg/g of AO on Cox and 1018.2mg/g of CV and 682.8mg/g of AO on SBox. Desorption efficiencies were in the range of 50-52% and re-adsorption capacities varied from 65 to 81%, showing the possibility of reuse of both adsorbent materials. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Martins, Luide Rodrigo AU - Martins LR AD - Departamento de Quimica, Instituto de Ciencias Exatas e Biologicas, Universidade Federal de Ouro Preto, Campus Universitario Morro do Cruzeiro, s/n degrees , Bauxita, 35400-000 Ouro Preto, Minas Gerais, Brazil. FAU - Rodrigues, Josilene Aparecida Vieira AU - Rodrigues JAV AD - Departamento de Quimica, Instituto de Ciencias Exatas e Biologicas, Universidade Federal de Ouro Preto, Campus Universitario Morro do Cruzeiro, s/n degrees , Bauxita, 35400-000 Ouro Preto, Minas Gerais, Brazil. FAU - Adarme, Oscar Fernando Herrera AU - Adarme OFH AD - Departamento de Quimica, Instituto de Ciencias Exatas e Biologicas, Universidade Federal de Ouro Preto, Campus Universitario Morro do Cruzeiro, s/n degrees , Bauxita, 35400-000 Ouro Preto, Minas Gerais, Brazil. FAU - Melo, Tania Marcia Sacramento AU - Melo TMS AD - Departamento de Quimica, Instituto de Ciencias Exatas e Biologicas, Universidade Federal de Ouro Preto, Campus Universitario Morro do Cruzeiro, s/n degrees , Bauxita, 35400-000 Ouro Preto, Minas Gerais, Brazil. FAU - Gurgel, Leandro Vinicius Alves AU - Gurgel LVA AD - Departamento de Quimica, Instituto de Ciencias Exatas e Biologicas, Universidade Federal de Ouro Preto, Campus Universitario Morro do Cruzeiro, s/n degrees , Bauxita, 35400-000 Ouro Preto, Minas Gerais, Brazil. FAU - Gil, Laurent Frederic AU - Gil LF AD - Departamento de Quimica, Instituto de Ciencias Exatas e Biologicas, Universidade Federal de Ouro Preto, Campus Universitario Morro do Cruzeiro, s/n degrees , Bauxita, 35400-000 Ouro Preto, Minas Gerais, Brazil. Electronic address: laurent@iceb.ufop.br. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170125 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 RN - 0 (Anti-Infective Agents) RN - 0 (Coloring Agents) RN - 0 (Water Pollutants, Chemical) RN - 2465-27-2 (Benzophenoneidum) RN - 9004-34-6 (Cellulose) RN - 9006-97-7 (bagasse) RN - J4Z741D6O5 (Gentian Violet) SB - IM MH - Adsorption MH - Anti-Infective Agents/chemistry/isolation & purification MH - Benzophenoneidum/*chemistry/*isolation & purification MH - Cellulose/*chemistry MH - Coloring Agents/chemistry/isolation & purification MH - Gentian Violet/*chemistry/*isolation & purification MH - Hydrogen-Ion Concentration MH - Kinetics MH - Saccharum/*chemistry MH - Water Pollutants, Chemical/chemistry/isolation & purification OTO - NOTNLM OT - Adsorption OT - Auramine-O OT - Crystal violet OT - Desorption OT - Oxidized cellulose OT - Oxidized sugarcane bagasse EDAT- 2017/02/06 06:00 MHDA- 2018/03/10 06:00 CRDT- 2017/02/05 06:00 PHST- 2016/10/26 00:00 [received] PHST- 2017/01/19 00:00 [revised] PHST- 2017/01/22 00:00 [accepted] PHST- 2017/02/06 06:00 [pubmed] PHST- 2018/03/10 06:00 [medline] PHST- 2017/02/05 06:00 [entrez] AID - S0021-9797(17)30107-8 [pii] AID - 10.1016/j.jcis.2017.01.085 [doi] PST - ppublish SO - J Colloid Interface Sci. 2017 May 15;494:223-241. doi: 10.1016/j.jcis.2017.01.085. Epub 2017 Jan 25.