SUSTAINABLE USE OF BOILER ASH TO PURIFY BIODIESEL AND WASTE FRYING OIL: A PROPOSAL OF CIRCULAR ECONOMY

SUSTAINABLE USE OF BOILER ASH TO PURIFY BIODIESEL AND WASTE FRYING OIL: A PROPOSAL OF CIRCULAR ECONOMY

Innovations in biodiesel purification pave the way for lower production costs and a more sustainable future. This study explores the remarkable potential of biodiesel boiler waste plants, both directly and in modified forms, for the purification process of soy methyl biodiesel (BMS). It extends to t...

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Main Authors: Rhalid Akel, Fernanda S. Lira, Vinicius C. Luna, Matheus Z. Marques, Leonardo G. Vasconcelos, Marilza Castilho, Adriana P. C. Siqueira, Ailton J. Terezo, Adriano B. de Siqueira
Format: Article
Language:English
Published: Sociedade Brasileira de Química 2025-05-01
Series:Química Nova
Subjects:
biomass
rice husk
sustainability
adsorbent
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422025000500312&lng=en&tlng=en
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Summary:Innovations in biodiesel purification pave the way for lower production costs and a more sustainable future. This study explores the remarkable potential of biodiesel boiler waste plants, both directly and in modified forms, for the purification process of soy methyl biodiesel (BMS). It extends to the inclusion of waste frying oil (ORF) samples. The untreated and HCl-treated biomass underwent a thorough characterization utilizing simultaneous thermogravimetry-differential thermal analysis (TG-DTA) and thermogravimetric-differential scanning calorimetry (TG-DSC) coupled with Fourier transform infrared spectroscopy (FTIR), infrared spectroscopy, X-ray fluorescence (EDX), and inductively coupled plasma optical emission spectroscopy (ICP OES). FTIR and EDX analyses revealed a significant presence of SiO2 in the biomass, which can effectively regulate moisture and reduce impurities during biodiesel production. Acidity, saponification value, water, and ester content were measured to assess the role of the residue in biodiesel purification. Both untreated and HCl-treated waste showed impressive efficiency in water adsorption and removing organic impurities in ORF and BMS. This confirms that boiler ash derived from rice husk fuel is a powerful adsorbent for impurities such as water and organic compounds in BMS and ORF, showing great promise as a reusable resource in biodiesel production facilities.
ISSN:1678-7064

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