Granular activated carbons from avocado seeds

Sánchez, F.; Agudín, F. y San Miguel Alfaro, Guillermo (2017). Granular activated carbons from avocado seeds. En: "15th International Conference on Environmental Science and Technology", 31st August to 2nd September 2017, Rhodes, Greece. ISBN 978-960-7475-53-4. pp. 1-6.

Descripción

Título: Granular activated carbons from avocado seeds
Autor/es:
  • Sánchez, F.
  • Agudín, F.
  • San Miguel Alfaro, Guillermo
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 15th International Conference on Environmental Science and Technology
Fechas del Evento: 31st August to 2nd September 2017
Lugar del Evento: Rhodes, Greece
Título del Libro: Proceedings of the 15th International Conference on Environmental Science and Technology
Fecha: 2017
ISBN: 978-960-7475-53-4
Materias:
Palabras Clave Informales: Activated carbons; avocado seeds; adsorption; porosity; surface area
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Química Industrial y del Medio Ambiente
Grupo Investigación UPM: Grupo de Agroenergética
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Avocado seeds have proven to be an excellent raw material for the production of Granular Activated Carbons (GAC). This residue, generated in large amounts in centralized facilities dedicated to the transformation of avocado fruit, has no commercial value at present. GAC have been produced by partial gasification of ground seeds under mildly oxidizing conditions (steam/nitrogen mixture). Optimum activation conditions were achieved at 1000 ºC and residence times between 120-150 min, resulting in burn off rates between 34-37 wt% and carbon yields between 12.4-13.0 wt%. These GAC exhibited type IV N2 gas adsorption isotherm, characteristic of materials containing a mixture of micro and mesopores. Avocado seed GACs exhibited BET surface areas up to 700 m2 /g, CO2 surface areas up to 900 m 2 /g and micro-pore volumes up to 0.31 cm3 /g. This porous structure provided these GAC with a remarkable aqueous adsorption capacity for methylene blue (Langmuir qm = 153.8 mg/g and Freundlich Kf = 113.0 mg/g), which was greater than that determined for a range of GAC commercialized for the treatment of waste and drinking waters.

Más información

ID de Registro: 49894
Identificador DC: http://oa.upm.es/49894/
Identificador OAI: oai:oa.upm.es:49894
URL Oficial: https://cest2017.gnest.org/
Depositado por: Memoria Investigacion
Depositado el: 01 Jun 2018 17:50
Ultima Modificación: 04 Jun 2018 15:50
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