Title
Preparation of granular activated carbons from yellow mombin fruit stones for CO2 adsorption
Author
Raildo Alves Fiuza Jr., Raimundo Medeiros de Jesus Neto, Laise Bacelar Correia, Heloysa Martins Carvalho Andradea
Year
2015
Journal
Journal of Environmental Management
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.
Instrument
NRS-5100
Keywords
Raman imaging microscopy, Combustion gasesCO2 captureActivated carbonFruit stonesThermogravimetric analysisAdsorption cycles