Departamento de Ingeniería Química, Ambiental y de los Materiales

URI permanente para esta comunidadhttps://hdl.handle.net/10953/42

En esta Comunidad se recogen los documentos generados por el Departamento de Ingeniería Química, Ambiental y de los Materiales y que cumplen los requisitos de Copyright para su difusión en acceso abierto.

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Bioreﬁnery based on olive biomass. State of the art and future trends
(Elsevier, 2014-03-25) Romero-García, Juan Miguel; Niño, Luis; Martínez-Patiño, José Carlos; Álvarez-Vaquerizo, Cristina; Castro-Galiano, Eulogio; Negro, María José
With currently more than nine million hectares, olive tree cultivation has spread worldwide, table olives and olive oil as the main products. Moreover, a number of by-products and residues derived from both tree cultivation and the process of industrial olive oil production, most having no practical applications, are obtained yearly. This paper reviews the research regarding these by-products, namely biomass from olive tree pruning, olive stones, olive pomace and wastewaters obtained from the process of olive oil production. Furthermore, a wide range of compounds has been identified and can be produced using a broad definition of the term biorefinery based on olive tree biomass. As an example, this paper reviews ethanol production as one of the main proposed applications, as well as research on other value-added products. Finally, this paper also assesses recent technological advances, future perspectives and challenges in each stage of the process.
High Solids Loading Pretreatment of Olive Tree Pruning with Dilute Phosphoric Acid for Bioethanol Production by Escherichia coli
(American Chemical Society, 2015-02-26) Martínez-Patiño, José Carlos; Romero-García, Juan Miguel; Ruiz-Ramos, Encarnación; Oliva, José Miguel; Álvarez-Vaquerizo, Cristina; Romero-Pulido, Inmaculada; Negro, María José; Castro-Galiano, Eulogio
This paper deals with a new approach for using olive tree pruning biomass as raw material for ethanol and other chemical production. This process includes a water extraction step, followed by a high solids loading dilute phosphoric acid pretreatment and an ethanologenic Escherichia coli fermentation for the conversion of all of the sugars released. Results show that the operational conditions leading to the maximal hemicelullosic sugar recovery in the liquid fraction (near 70%) are 170 °C and 0.5% (w/v) phosphoric acid concentration. The fermentation of the mixed sugars found in the detoxiﬁed prehydrolysates by ethanologenic E. coli MS04 led to an ethanol concentration of 23 g/L and an ethanol yield of 0.46 g of ethanol/g of sugars consumed. When the ethanol production from the pretreated solids after enzymatic hydrolysis is also taken into account, 13.2 g of ethanol/100 g of original material was obtained. The production of other interesting compounds is also considered.

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Examinando Departamento de Ingeniería Química, Ambiental y de los Materiales por Autor "Álvarez-Vaquerizo, Cristina"