ADSORÇÃO DE CONTAMINANTES DO BIODIESEL POR FIBRAS DE BAGAÇO MODIFICADAS NA SUPERFÍCIE
AUTOR(ES)
Oliveira, Renata de Souza, Borges, Mariana Fornazier, Vieira, Andressa Tironi, Henrique, Mariana Alves, Ribeiro, Elaine A. Mundim, Bezerra, Franciel Aureliano, Portela, Flaysner Magayver, Pereira, Nilson Roberto, Assunção, Rosana Maria Nascimento de, Ruggiero, Reinaldo
FONTE
Quím. Nova
DATA DE PUBLICAÇÃO
2018-02
RESUMO
Sugarcane bagasse fibers chemically modified on its surface were used to adsorb contaminants from biodiesel. Two biodiesel samples were used as adsorbates: crude and washed biodiesel. The contaminants were mainly glycerol and water, but also ions, and methanol. The biodiesel is usually washed, in order to remove most of the contaminants, but the procedure introduces large amounts of water, which are further difficult to remove, because the biodiesel acting as an acceptor of hydrogen bond. The adsorbent used in this work was proved to be very efficient to remove the contaminants and also to remove water from the washing the crude biodiesel. The contaminants adsorbed from biodiesel were identified by thermal analyses (DSC and DTA) of the fibers (adsorbent) and of the biodiesel (adsorbate) by comparing the results with the pure biodiesel. The proportion of free glycerol showed high adsorption efficiency for the crude biodiesel. A total amount of 1.34 g of fibers was estimated as being needed for its complete removal. The mass of bagasse fibers added (up to 1g) in a fixed volume of biodiesel was a relevant condition, as the saturation in fibers started at around 0.70 g cleaning up to about 98% removal of the impurities.
Documentos Relacionados
- Avaliação do uso de argilas montmorilonitas modificadas na adsorção de nitrato em meio aquoso
- Adsorção de bifenil na superfície de Si (001) por um método de primeiros princípios
- Adsorção de proteinas na superficie de biomateriais polimericos
- TRATAMENTO DA VINHAÇA POR ADSORÇÃO EM CARVÃO DE BAGAÇO DE CANA-DE-AÇÚCAR
- Produção de xilose a partir do bagaço de cana-de-açúcar por metodologia de superfície de resposta