title: Preparation of granular activated carbons from yellow mombin fruit stones for CO2 adsorption.
abstract: Stones of yellow mombin, a native fruit of the tropical America and West Indies, were used as starting materials to produce activated carbons, subsequently used as adsorbent for CO2 capture. The carbonaceous materials were either chemically activated with HNO3, H3PO4 and KOH or physically activated with CO2. The carbon samples were characterized by SEM, EDX, TG/DTA, Raman spectroscopy, physical adsorption for textural analysis and by acid-base titrations. The CO2 adsorption capacity and adsorption cycles were investigated by TG. The results indicate that the capacity of CO2 adsorption may be maximized on highly basic surfaces of micropores smaller than 1 nm. The KOH activated carbon showed high and stable capacity of CO2 adsorption after 10 cycles.
authors.affiliation: Laboratório de Catálise e Materiais (LABCAT), Instituto de Química, Departamento de Química Geral e Inorgânica, Universidade Federal da Bahia, R. Barão de Jeremoabo, s/n, Campus de Ondina, 40170-280 Salvador, Bahia, Brazil.
authors.forename: Raildo Alves
authors.initials: RA
authors.lastname: Fiuza
authors.affiliation: Laboratório de Catálise e Materiais (LABCAT), Instituto de Química, Departamento de Química Geral e Inorgânica, Universidade Federal da Bahia, R. Barão de Jeremoabo, s/n, Campus de Ondina, 40170-280 Salvador, Bahia, Brazil.
authors.forename: Raimundo
authors.initials: R
authors.lastname: Medeiros de Jesus Neto
authors.affiliation: Laboratório de Catálise e Materiais (LABCAT), Instituto de Química, Departamento de Química Geral e Inorgânica, Universidade Federal da Bahia, R. Barão de Jeremoabo, s/n, Campus de Ondina, 40170-280 Salvador, Bahia, Brazil.
authors.forename: Laise Bacelar
authors.initials: LB
authors.lastname: Correia
authors.affiliation: Laboratório de Catálise e Materiais (LABCAT), Instituto de Química, Departamento de Química Geral e Inorgânica, Universidade Federal da Bahia, R. Barão de Jeremoabo, s/n, Campus de Ondina, 40170-280 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia em Energia e Ambiente (INCT-E&A), Universidade Federal da Bahia, R. Barão de Jeremoabo, s/n, Campus de Ondina, 40170-280 Salvador, Bahia, Brazil. Electronic address: handrade@ufba.br.
authors.forename: Heloysa Martins
authors.initials: HM
authors.lastname: Carvalho Andrade
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000302:isolation & purification*; D027926:Anacardiaceae / Q000737:chemistry*; D002245:Carbon Dioxide / Q000302:isolation & purification*; D002606:Charcoal / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D016062:Porosity; D013499:Surface Properties; D013818:Thermogravimetry
chemical_list: D000393:Air Pollutants; D002245:Carbon Dioxide; D002606:Charcoal
keywords: Activated carbon; Adsorption cycles; CO(2) capture; Combustion gases; Fruit stones; Thermogravimetric analysis