Techno-economic and environmental impact assessment of an olive tree pruning waste multiproduct biorefinery

Servian-Rivas, Luis David; Pachón, Elia Ruiz; Rodríguez, Manuel; González‐Miquel, María; González, Emilio J.; Díaz, Ismael

doi:10.1016/j.fbp.2022.05.003

Cited by 11 publications

(4 citation statements)

References 26 publications

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“…50,78 For European countries, a great variety of integrated ETEA studies showed the shi from 1G articles to higher generations to implement modern and sustainable bioreneries. Spain, 79 Denmark, 80 and Portugal 81 show the highest number of publications in the EU (six, three, and two, respectively). Most articles rely on waste management processes such as anaerobic digestion to produce biogas or biomethane and other lignocellulosic feedstock materials.…”

Section: Publications By the Country Of The Case Studymentioning

confidence: 99%

Integrated techno-economic and environmental assessment of biorefineries: review and future research directions

Pérez-Almada,

Galán-Martín,

Contreras

et al. 2023

Sustainable Energy Fuels

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Section: Publications By the Country Of The Case Studymentioning

confidence: 99%

Integrated techno-economic and environmental assessment of biorefineries: review and future research directions

Pérez-Almada,

Galán-Martín,

Contreras

et al. 2023

Sustainable Energy Fuels

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“…Olive leaves can be collected as a by-product during oil processing (about 10% of the total weight of the olives) but can also be a residue of olive tree pruning. Some authors estimated that about 25 kg of by-products (twigs and leaves) could be obtained annually by pruning per tree [ 289 ]. To date, this by-product is often used as animal feed, even if this natural resource rich in antioxidant phenolic compounds should be valorized [ 290 ].…”

Section: Phytochemicals From Crop Residuesmentioning

confidence: 99%

Phytochemicals Derived from Agricultural Residues and Their Valuable Properties and Applications

et al. 2023

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Billions of tons of agro-industrial residues are produced worldwide. This is associated with the risk of pollution as well as management and economic problems. Simultaneously, non-edible portions of many crops are rich in bioactive compounds with valuable properties. For this reason, developing various methods for utilizing agro-industrial residues as a source of high-value by-products is very important. The main objective of the paper is a review of the newest studies on biologically active compounds included in non-edible parts of crops with the highest amount of waste generated annually in the world. The review also provides the newest data on the chemical and biological properties, as well as the potential application of phytochemicals from such waste. The review shows that, in 2020, there were above 6 billion tonnes of residues only from the most popular crops. The greatest amount is generated during sugar, oil, and flour production. All described residues contain valuable phytochemicals that exhibit antioxidant, antimicrobial and very often anti-cancer activity. Many studies show interesting applications, mainly in pharmaceuticals and food production, but also in agriculture and wastewater remediation, as well as metal and steel industries.

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“…OTP is also a source of mannitol (around 1-5.2%) [118][119][120]. A study by Servian-Rivas et al [49] focused on the environmental assessment and economic performance of two biorefinery schemes, using 100 t/day of olive tree pruning waste as feedstock, based on a multiproduct biorefinery producing ethanol, xylitol, and antioxidants on one hand, as well as standalone production of antioxidants on the other hand. The results showed that antioxidants produced from OTP are promising in terms of both environmental performance and process economics with respect to the multiproduct scheme.…”

Section: Liquid Materialsmentioning

confidence: 99%

“…In 2021, the International Energy Agency (IEA) created a roadmap for global energy decarbonization by 2050, and among the key pillars, biorefineries play a very important role, since generation from bioenergy sources must be increased from 40 EJ in 2020 to 100 EJ in 2050. From this perspective, 45% of the stock used for bioenergy production should arise from organic wastes and 20% from woody residues [49,50]. Salento peninsula, sited in the Apulia Region in the south of Italy, has been affected by a dramatic outbreak of Xylella fastidiosa that has decimated olive trees (it is estimated over 20 million) since 2013 [51].…”

Section: Introductionmentioning

confidence: 99%

Thermochemical Technologies for the Optimization of Olive Wood Biomass Energy Exploitation: A Review

Maggiotto,

Colangelo,

Milanese

et al. 2023

Energies

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The use of biomass can be a strategic way to realize a carbon-neutral energy plan, ensuring a fuel feedstock. Residual biomass arising from pruning is demonstrated to be an important energy resource in terms of quantity and quality. In the Salento peninsula, Apulia Region, in the south of Italy, a dramatic outbreak of Xylella fastidiosa has decimated olive trees since 2013, gaining a considerable amount of wood biomass. This paper, starting from the need to find a way to optimize the use of this available stock, reviews the main technologies on the utilization of olive wood for energy purposes. In particular, processes and products are here described, and an energy analysis compares lower heating value (LHV), higher heating value (HHV), mass yield, process operating conditions, and energy generated and spent by the process in order to find the most effective technology in order to optimize the energy use of olive biomass. The conclusions show the advantages and disadvantages of each technology. Pyrolysis performs well, showing the best results for both char HHV and syngas yield under different operating conditions. Gasification seems to be the most appropriate among conversion technologies to optimize olive tree pruning for energy purposes, as it can be used to produce both electrical and thermal energy. In terms of economic valorization, char is the most promising material representing a value-added product, the quality and versatility of which ranges from fuel to soil improvers and additives for the construction of supercapacitors. Conversely, its disadvantages are mainly represented by high ash content, which can slightly decrease the boiler efficiency. Finally, the amount of alkali metals can produce several problems, such as fouling, slagging, corrosion, etc., posing a challenge for combustion control and pollutant minimization.

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Techno-economic and environmental impact assessment of an olive tree pruning waste multiproduct biorefinery

Cited by 11 publications

References 26 publications

Integrated techno-economic and environmental assessment of biorefineries: review and future research directions

Integrated techno-economic and environmental assessment of biorefineries: review and future research directions

Phytochemicals Derived from Agricultural Residues and Their Valuable Properties and Applications

Thermochemical Technologies for the Optimization of Olive Wood Biomass Energy Exploitation: A Review

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