Alternatives for recovery, reuse, recycling and final disposal of spent bleaching earth in the vegetable oil refining process
DOI:
https://doi.org/10.5281/zenodo.6478821Keywords:
Bleaching earth, clays, technology, scientific publications, patentsAbstract
Bleaching earths or clays are raw materials used in the process of refining vegetable oil. Due to its physical conditions, it has characteristics and properties that make it suitable for the adsorption of certain non-glyceride components and impurities, such as carotenoids, chlorophylls, free fatty acids, phospholipids and hydroperoxides, thereby ensuring that the oil meets the necessary requirements to achieve the quality of the final product. The clays can retain between 30-45% of the refined oil and once used in the bleaching process they are disposed in open dumps without any method of recovery. This behavior of consuming and discarding is changing and one begins to see industrial waste as value-added materials that can be used in different processes and thereby promote secondary economies from the properties of waste. In this sense, this publication identifies technological alternatives for the recovery of adhering oil in the clays, regeneration of the qualities of the lands for later use in the refining industry and options for the recovery of the waste for the production of biodiesel and biogas, food supplement for animals, fertilizers, water treatments, aggregates for construction, soap making, among others. Information that was extracted in the database of the Patent Inspiration platform for patent documents and Web of Science for scientific publications, under a search strategy that allowed to identify successful and proven experiences in different countries.
Downloads
References
Ali B. et al (2016) Eliminación del colorante azul de metileno del agua por un biosorbente de tierra blanqueante agotado. Water Science Technology, Vol 74, Nº11.
Aragón, C.; De la Torre, E; Guevara, A; Haro, C. (2014). Regeneración de Arcillas de Blanqueo Empleadas en la Decoloración de Aceites Vegetales Comestibles. Escuela Politécnica Nacional, Departamento de Metalurgia Extractiva. REVISTA EPN, VOL. 34, Nº. 1. Quito, Ecuador.
Beshara, Abdelhamid et al (2016). Reutilización de tierra decolorante gastada mediante polimerización de residuos orgánicos. Water Science & Technology.
Chang I. et al (2010) Conversión de biodiésel de aceites residuales recuperados de la tierra de blanqueo agotada generada en las refinerías de aceite de soja. Patente: TW201006921A.
Cortez G, Lilian Camila; Torres Cruz, Sonia Liliana. (2016). Evaluacion de las alternativas para el aprovechamiento del residuo de la filtración de un aceite comestible. Universidad de la Salle. Bogotá-Colombia.
Enoch Y. et al (2004) Utilización de tierra blanqueadora activada residual que contiene aceite de palma en la producción de riboflavina por Ashbya gossypii. Journal of the American Oil Chemists Society.
García, E. y Suárez, M., 2001, “Las arcillas: Propiedades y usos”, http://www.uclm.es/users/higueras/yymm/arcillas.htm, (junio, 2 011).
Harvey, C. y Lagaly, G., 2 006, “Conventional Applications”, en Bergaya, F., et al., “Handbook of Clay Science”, primera edición, Elsevier, Amsterdam, Países Bajos, pp. 501, 507.“Home Thomson Reuters.” [Online]. Available: https://www.thomsonreuters.com/en.html.https://www.patentinspiration.comhttps://thelens.com
Ibrahim, A., 1 999, “Current and Prospective Export Market Developments for Palm Oil” en Leonard, E., et al., “Proceeding of the World Conference on Palm and Coconut Oils for the 21st Century: Sources, Processing, Applications and Competition”, American Oil Chemists’ Society, Illinois, USA, p. 30.
Jara, Dennys; Loor, Vivian. (2015). Recuperación de aceite en tierra de blanqueo usada a través de extracción con solventes para obtener biodiesel. Universidad de Guayaquil. Ecuador.
Klein, J., 1 986, “Methods for Recovering Oil from Spent Bleaching Earth” en American Oil Chemists’ Society y Baldwin, A., “World Conference on Emerging Technologies in the Fats and Oils Industry”, AOCS Press, Illinois,USA, pp. 169-171.
Lusas, E., 2 003, “Animal and Vegetable Fats, Oils and Waxes” en Riegel, E. y Kent, J., “Riegel’s Handbook of Industrial Chemistry”, décima edición, Kluwer Academic/Plenum Publishers, New York, USA, p. 290.
Navas Martinez, Feiber. (s/f). Recuperación de aceite en la tierra de blanqueo usada en la refinación de aceite palma. Alimentos Tecnológica FITEC. Colombia.
O’Brien, R., 2 009, “Fats and Oils: Formulating and Processing for Applications”, tercera edición, CRC Press, New York, USA, pp. 22, 44-78, 80, 85, 86, 103, 104.
Saleh, Y. y Zahrani, A., 1 999, “Techo-economical Evaluation of Oil Recovery and Regeneration of Spent Bleaching Clay”, Journal of King AbdulAziz University, 11 (2), 115.
Shim K. et al (2007). Método para producir vitamina b2 usando tierra decolorante gastada. Patente: KR100640548B1.
Smallwood, Norman (2015). Use of spent bleaching earth for economic and environmental benefit. AOCS. https://www.aocs.org/stay-informed/read-inform/featured-articles/use-of-spent-bleaching-earth-for-economic-and-environmental-benefit-may-2015.
Smallwood Norman (2013). US. Patent N.º [WO2013052357A2]: patente inspiration.
Taylor, D., 1993, “Adsorptive Purification”, en Applewhite, T., “Proceedings of the World Conference on Oilseed Technology and Utilization”, AOCS Press, Illinois, USA, pp. 152-161.
Taylor, D., 2 005, “Bleaching”, en Shahidi, F., “Bailey’s Industrial Oil and Fat Products”, sexta edición, Wiley-Interscience, New Jersey, USA, pp. 287-293, 302-308, 311, 312, 315, 316, 320-323.
Tsai, W., et al., 2 002, “Regeneration of spent bleaching earth by pyrolysis in a rotary furnace”, Elsevier, 63 (1), 157.
Zahrani, A. y Daous, M., 2 000, “Recycling of Spent Bleaching Clay and Oil Recovery”, IChemE (Institution of Chemical Engineers), 78 (B), 224.
Published
How to Cite
Issue
Section
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
