Thermal analysis of olive tree pruning and the by-products obtained by its gasification and pyrolysis: The effect of some heavy metals on their devolatilization behavior

Iáñez-Rodríguez, I.; Martín-Lara, M.A.; Blázquez, G.; Osegueda, O.; Calero, M.

doi:10.1016/j.jechem.2018.07.002

Cited by 13 publications

(8 citation statements)

References 43 publications

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“…Slow pyrolysis is applied for retaining up to 50% of the carbon feedstock in the resulting biochar so that it can be used as soil fertilizer while high-temperature pyrolysis (>550 • C) led to biochar with high aromatic content from lignin decomposition and, therefore, recalcitrant to decomposition [64]. The biochar obtained by these latter authors from the pyrolysis or OP pellets showed HHV and LHV of 31.71 and 30.48 MJ/kg, respectively [64], far higher than those reported for OP [3,[7][8][9] and pellets from OP [64]. This biochar can be certified as Biochar Premium according to the regulations of the European Biochar Certificate, based on the analysis of nutrients and trace elements, polycyclic aromatic hydrocarbons composition, elemental analysis, pH, electrical conductivity and density performed by the authors [64].…”

Section: Pyrolysismentioning

confidence: 90%

“…For instance, BET surface area of coconut shell biochar was reported to be 244.2 m 2 /g [69] and that of biochars obtained from the pyrolysis of roots from Jatropha curcas L. plants used for the phytoremediation of contaminated soils with different heavy metal concentrations soils was 447 m 2 /g [70]. Notwithstanding, scanning electron microscopy (SEM) analysis indicated that the surface of biochar from OP was higher than that of OP surface, and that it had a very porous structure, indicating that it could be regarded as an ideal support for metal impregnation [9].…”

Section: Pyrolysismentioning

confidence: 99%

“…The pyrolysis under inert atmosphere (N 2 ) and under oxidizing atmosphere (20% O 2 ) of OP, OP soaked with Ni solutions and OP soaked with Pb solutions has been investigated with a heating rate of 10 • C/min [9]. For the 3 biomasses, the greatest mass loss under was found in the ranges 150-400 • C and 150-480 • C under inert atmosphere and oxidizing atmosphere, respectively.…”

Section: Pyrolysismentioning

confidence: 99%

“…Generally, the olive-pruning debris is either grinded and ploughed into soil or left on the land to be incinerated (Figure 5), which not only causes air pollution (CO 2 emissions) but also mineralizes the soil and increases the risks of pest propagation and fire accidents. The higher heating value (HHV) of the olive-pruning debris ranges between 16.7 MJ/kg and 19.8 MJ/kg [3,[7][8][9], and its bulk density between 272 kg/m 3 [9] and 347.9 kg/m 3 [3]. The lower heating value (LHV) has been reported to be 16.55 MJ/kg [7].…”

Section: Introductionmentioning

confidence: 99%

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Energetic Valorisation of Olive Biomass: Olive-Tree Pruning, Olive Stones and Pomaces

et al. 2020

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Olive oil industry is one of the most important industries in the world. Currently, the land devoted to olive-tree cultivation around the world is ca. 11 × 106 ha, which produces more than 20 × 106 t olives per year. Most of these olives are destined to the production of olive oils. The main by-products of the olive oil industry are olive-pruning debris, olive stones and different pomaces. In cultures with traditional and intensive typologies, one single ha of olive grove annually generates more than 5 t of these by-products. The disposal of these by-products in the field can led to environmental problems. Notwithstanding, these by-products (biomasses) have a huge potential as source of energy. The objective of this paper is to comprehensively review the latest advances focused on energy production from olive-pruning debris, olive stones and pomaces, including processes such as combustion, gasification and pyrolysis, and the production of biofuels such as bioethanol and biodiesel. Future research efforts required for biofuel production are also discussed. The future of the olive oil industry must move towards a greater interrelation between olive oil production, conservation of the environment and energy generation.

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Section: Pyrolysismentioning

confidence: 90%

Section: Pyrolysismentioning

confidence: 99%

Section: Pyrolysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energetic Valorisation of Olive Biomass: Olive-Tree Pruning, Olive Stones and Pomaces

et al. 2020

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“…A literature review showed that studies on pyrolysis of orchard wastes were mainly concerned on olive trees [ 28 , 29 , 30 , 31 ] and vineyard pruning residues [ 32 , 33 , 34 , 35 ]. Because of the insufficient amount of data on pruning residues from the main orchard trees cultivated in the territory of our country (Poland), we focused our study on the production and analysis of the biochars obtained from pruning residues of apple, pear, and plum.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of Pruning Residues from Various Types of Orchards and Pretreatment for Energetic Use of Biochar

et al. 2021

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The routine pruning and cutting of fruit trees provides a considerable amount of biowaste each year. This lignocellulosic biomass, mainly in the form of branches, trunks, rootstocks, and leaves, is a potential high-quality fuel, yet often is treated as waste. The results of a feasibility study on biochar production by pyrolysis of residues from orchard pruning were presented. Three types of biomass waste were selected as raw materials and were obtained from the most common fruit trees in Poland: apple (AP), pear (PR), and plum (PL) tree prunings. Two heating rates and three final pyrolysis temperatures were applied. For the slow (SP) and fast pyrolysis (FP) processes, the heating rates were 15 °C/min and 100 °C/min, respectively. The samples were heated from 25 °C up to 400, 500, and 600 °C. Chemical analyses of the raw materials were conducted, and the pyrolysis product yields were determined. A significant rise of higher heating value (HHV) was observed for the solid pyrolysis products, from approximately 23.45 MJ/kg for raw materials up to approximately 29.52 MJ/kg for pyrolysis products at 400 °C, and 30.53 MJ/kg for pyrolysis products at 600 °C. Higher carbon content was observed for materials obtained by fast pyrolysis conducted at higher temperatures.

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Olive-Oil Waste for the Removal of Heavy Metals from Wastewater

Martín-Lara

Muñoz‐Batista

Blázquez

et al. 2021

Remediation of Heavy Metals

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Thermal analysis of olive tree pruning and the by-products obtained by its gasification and pyrolysis: The effect of some heavy metals on their devolatilization behavior

Cited by 13 publications

References 43 publications

Energetic Valorisation of Olive Biomass: Olive-Tree Pruning, Olive Stones and Pomaces

Energetic Valorisation of Olive Biomass: Olive-Tree Pruning, Olive Stones and Pomaces

Pyrolysis of Pruning Residues from Various Types of Orchards and Pretreatment for Energetic Use of Biochar

Olive-Oil Waste for the Removal of Heavy Metals from Wastewater

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