Extracellular synthesis of silica oxide particles by fusarium oxysporum from rice husk ash

Tatiana Pineda, Carlos Henrique Lemos Soares, Dachamir Hotza, Ana Elisa Casas-Botero, Margarita Ramírez-Carmona, Mabel Torres-Taborda

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    8 Scopus citations

    Abstract

    Extracellular synthesis of silica particles was carried out by Fusarium oxysporum mycelia using rice husk ash (RHA) as raw material. RHA before and after bioprocessing was analyzed by SEM and specific surface area. Dissolved silica was quantified using colorimetry. Incubation of rice husk ash with F. Oxysporum at 28°C and pH 6.8 indicated that 80% silica was dissolved and micrographs of RHA before and after reaction with fungi showed that the morphology of silica particles changed and the average size decreased (~600 to ~5 μm). Moreover, specific volume pore of particles was reduced from 0.026 to 0.013 cm3/g and surface area increased from 115 to 125 m2/g. Dissolved silica corresponds to 177 m2/g. It is concluded that synthesis of oxide materials using fungal biotransformation is a viable process to obtain added value products from agro-industrial waste materials.

    Original languageEnglish
    Title of host publicationAdvanced Powder Technology VIII
    EditorsLucio Salgado, Francisco Ambrozio Filho
    PublisherTrans Tech Publications Ltd
    Pages1153-1157
    Number of pages5
    ISBN (Print)9783037854907
    DOIs
    StatePublished - 2012
    Event8th International Latin-American Conference on Powder Technology 2012 - Santa Catarina, Brazil
    Duration: 6 Nov 20129 Nov 2012

    Publication series

    NameMaterials Science Forum
    Volume727-728
    ISSN (Print)0255-5476
    ISSN (Electronic)1662-9752

    Conference

    Conference8th International Latin-American Conference on Powder Technology 2012
    Country/TerritoryBrazil
    CitySanta Catarina
    Period6/11/129/11/12

    Keywords

    • Biosynthesis
    • Fusarium oxysporum
    • Rice husk ash
    • Silica

    Fingerprint

    Dive into the research topics of 'Extracellular synthesis of silica oxide particles by fusarium oxysporum from rice husk ash'. Together they form a unique fingerprint.

    Cite this