Techno-economic and environmental assessment of an olive stone based biorefinery

By-products and waste from olive production (agriculture) and the olive oil industry (mills and refineries) are an important environmental issue in Mediterranean areas. Industrial waste and by-products contain highly valuable components that can also be phytotoxic. This article reviews recent research on the valorisation of olive by-products under the bioeconomy strategy. The alternatives are classified according to the 'bioeconomy value pyramid', which prioritises higher value uses over the current energy and compost valorisation. Special attention is paid to the use of these by-products for animal feed that can be improved by reducing the content of saturated fatty acids (SFAs) and increase the polyunsaturated fatty acids amount considered beneficial in response to their use; this makes the food healthier for humans while simultaneously reducing feeding costs and the environmental impact of livestock.

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“…Other research papers have examined the conversion of by-products to biodiesel with the use of lipase enzymes [12,13] or by other means [14].…”

Section: Low-value Uses Of Olive Biomassmentioning

confidence: 99%

Review and Analysis of Alternatives for the Valorisation of Agro-Industrial Olive Oil By-Products

Berbel

Posadillo²

2018

Sustainability

171

137

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“… A biorefinery based on olive stones. The techno‐economic analysis of a biorefinery based on olive stones is discussed by Hernández et al . The paper compares the production of xylitol, furfural, ethanol, and poly‐3‐hydroxybutyrate (PHB) with and without bioenergy to that of a cogeneration system using solid residue obtained from the biochemical processes previously considered (Fig.…”

Section: Biorefinery Approachmentioning

confidence: 99%

“…The paper compares the production of xylitol, furfural, ethanol, and poly‐3‐hydroxybutyrate (PHB) with and without bioenergy to that of a cogeneration system using solid residue obtained from the biochemical processes previously considered (Fig. (b)) . In another work on a biorefinery based on olive stones, a fractionation strategy is proposed to consecutively produce an antioxidant liquor using aqueous extraction, pentose‐rich liquor by dilute acid pre‐treatment, glucose rich liquor by enzymatic hydrolysis, and finally, lignin‐rich residual solid, with each fraction having a wide range of potential applications …”

Section: Biorefinery Approachmentioning

confidence: 99%

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Olive‐derived biomass as a source of energy and chemicals

Ruiz

Romero‐García

Romero

et al. 2017

Biofuels Bioprod Bioref

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Olive trees are cultivated in more than 40 countries worldwide over more than 10 million hectares. In addition to olive oil, a large amount of biomass is produced annually. All this biomass must be adequately handled and disposed of. Conventional disposal methods include direct burning or spreading in fields, but this has economical costs and environmental concerns, as well as wasting a source of energy and chemicals. This review summarizes the most recent proposals for the use of biomass derived from olive tree cultivation and olive oil production processes. Biomass produced from pruning, leaves, olive stones and pomace, extracted olive pomace, and olive waste water are considered, and the main options for processing are reviewed according to recent advances in the literature. The biorefinery concept applied to olive‐derived biomass is also presented and representative works are discussed. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…From SCB, it is possible to obtain sugar monomers such as glucose and xylose, which can be used as platforms for obtaining different products. Both xylose and glucose can be used in the fermentation processes to obtain compounds such as butanol, ethanol, lactic acid, xylitol, succinic acid, arabitol, and poly-3-hydroxybutyrate (PHB), among others [7,8,13,[27][28][29][30][31][32]. When xylose and glucose are used in the dehydration processes, furfural and hydroxymethylfurfural (HMF) are obtained, respectively [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency of Biorefinery Schemes Using Sugarcane Bagasse as Raw Material

2018

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The use of biomass to obtain value-added products has been a good alternative for reducing their environmental impacts. For this purpose, different studies have been carried out focused on the use of agro-industrial waste. One of the most commonly used raw materials has been bagasse obtained from the processing of sugarcane in high quantities in countries like Brazil, India, China, Thailand, Pakistan, Mexico, Colombia, Indonesia, Philippines, and the United States. From 1 ton of sugarcane, 280 kg of bagasse can be obtained. Sugarcane bagasse (SCB) is a waste that is rich in polysaccharides, which makes it a promising raw material for obtaining products under biorefinery concept. The objective of this work was to analyze from the energetic point of view, different biorefinery schemes in which SCB is employed as a raw material. The design and simulation of the different biorefinery schemes is performed in Aspen Plus software. From this software, it was possible to obtain the different mass and energy balances, which are used in the technical and energetic analysis. Exergy is used as a comparison tool for the energy analysis. These analyses allowed for the selection of the best biorefinery configuration from SCB.

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Techno-economic and environmental assessment of an olive stone based biorefinery

Cited by 92 publications

References 21 publications

Review and Analysis of Alternatives for the Valorisation of Agro-Industrial Olive Oil By-Products

Review and Analysis of Alternatives for the Valorisation of Agro-Industrial Olive Oil By-Products

Olive‐derived biomass as a source of energy and chemicals

Energy Efficiency of Biorefinery Schemes Using Sugarcane Bagasse as Raw Material

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