Olive bagasse (Olea europea L.) pyrolysis

Şensöz, Sevgi; Demiral, İlknur; Gerçel, Hasan Ferdi

doi:10.1016/j.biortech.2005.03.007

Cited by 171 publications

(45 citation statements)

References 40 publications

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“…Disposal of olive mill wastes through landfilling should be avoided as it subtracts the soil from agricultural use [3,4]. On the other hand, incineration reduces the volume of the olive mill wastes, but it is costly and generates emissions to air, soil and water [5,6].…”

Section: Introductionmentioning

confidence: 99%

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Guida

Bouaik

Tabal

et al. 2015

J Therm Anal Calorim

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In olive-oil-producing countries, large amounts of waste material are generated as by-product for which there is no ready use and in some cases may have a negative value because of the cost of disposal. Most of these countries depend on fossil fuels for their energy uses, and olive mill wastes can be used to supplement such energy sources using thermochemical conversion processes such as pyrolysis. However, efficient operation of thermochemical conversion systems requires a thorough understanding of the influence of the composition and thermal properties of these byproducts on their behaviour during the conversion process. In this study, the thermal behaviour of two olive mill wastes samples (olive mill solid waste: OMSW, and concentrated olive mill wastewater: COMWW) was examined at different heating rates ranging from 5 to 50°C min -1 in inert atmosphere using the technique of thermogravimetric analysis. As the increment of heating rates, the variations of characteristic parameters from the TG-DTG curves were determined. The initial temperature of degradation is higher in OMSW, which present a high amount of cellulose in comparison with COMWW. Three methods were used for the determination of kinetic reaction parameters: Friedman, Ozawa-Flynn-Wall and Vyazovkin methods. The results showed that apparent activation energy obtained for the decomposition of hemicelluloses and cellulose derived from OMSW was given as 150-176 and 210.5-235.7 kJ mol -1 , while for COMWW, the values were 133-145 and 255-275 kJ mol -1 , respectively.

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Section: Introductionmentioning

confidence: 99%

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Guida

Bouaik

Tabal

et al. 2015

J Therm Anal Calorim

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“…In developing countries, the use of biomass is of high interest as these countries have economy largely based on agriculture and forestry. The use of biomass as raw material for bioenergy depends on the state of the art of the technologies which are safe and economical to transform biomass into manageable value-added products (Sensoz et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Production and Characterization of Bio-Char from the Pyrolysis of Empty Fruit Bunches

Sukiran¹,

Kheang²,

Nasrin³

et al. 2011

American Journal of Applied Sciences

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Problem statement: The palm oil industry generates an abundance of oil palm biomass such as the Empty Fruit Bunch (EFB), shell, frond, trunk and Palm Oil Mill Effluent (POME). For 88 million tones of Fresh Fruit Bunch (FFB) processed in 2008, the amount of oil palm biomass was more than 26 million tones. Studies about production of bio-char from oil palm biomass are still lacking in Malaysia. So, this study was aimed to: (i) determine the effect of pyrolysis temperatures on bio-char yield (ii) characterize the bio-char obtained under different pyrolysed temperatures. Approach: In this study, pyrolysis of EFB was conducted using a fluidized fixed bed reactor. The effect of pyrolysis temperatures on bio-char yield was investigated. The pyrolysis temperature used ranged from 300-700°C. The elemental analysis, calorific value, surface area and total pore volume of the bio-char were determined. Results: The highest bio char yield of 41.56% was obtained at an optimum pyrolysis temperature of 300°C with particle size of 91-106 µm and the heating rate of 30°C min −1 . The calorific values of bio-char ranged from 23-26 MJ kg −1 . Conclusion: It was found that the bio-char products can be characterized as carbon rich, high calorific value and potential solid biofuels.

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“…In particular, the production of pyrolysis liquids has been investigated with the aim of using the liquid product directly in fuel applications or by upgrading, producing refined fuels and/or chemical products [12]- [17]. Numerous studies regarding liquid fuel production from various sources of biomass have demonstrated that an oil product can be obtained from OC in significant yields [2]- [4] [7]. Their direct use as conventional fuels may present some difficulties due to their high viscosity, poor heating value, corrosiveness and instability.…”

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confidence: 99%

“…Its characteristics depend on the process utilized to extract oil, and differ according to whether pressure, centrifuging or selective filtration is used, and whether the stone (pit) was removed from the olives. Typical cake arising as a result of pressure extraction contains from 4% to 5% oil when well exhausted and from 8% to 12% when coming from a classical press [1] [2]. An analysis of the content of this cake gives an average of sulfur content of about 0.05 -0.1 wt%, water 25%, nitrogenated materials 4.4%, fatty material 4%, non-nitrogenated extractable material 20%, gross cellulose 40%, and ash 6.6%.…”

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confidence: 99%

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Production of Bio-Oil from Pyrolysis of Olive Biomass with/without Catalyst

Hani¹,

Hailat²

2016

ACES

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In this study olive biomass was pyrolysis in a 400 cm 3 stainless steel reactor. It was externally heated by an electrical furnace in which the temperature is measured by a thermocouple inserted into the bed. The effect of the catalyst ratio to the biomass (5%, 10%, 15%, 20%, 30% and 40%) on the pyrolysis yield was investigated and compared with the uncatalyzed pyrolysis yield product. The bio-oil products yield from the pyrolysis process was found to increase as the catalyst ratio increased. The bio-oil yield from the olive oil-cake, which was 36.1% without the catalyst, reached the maximum value of 39.3% on using activated catalyst at 10% by weight. The gas products yield was found to increase upon using catalyst compared to the non-catalytic pyrolysis. The reduction in the bio-oil yield product was accompanied with a significant reduction in the oxygen content. The pyrolysis oil was examined using chromatographic analysis techniques. The chemical characterization showed that the bio-oil obtained from olive oil cake might be potentially valuable as a fuel and chemical feedstock.

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Olive bagasse (Olea europea L.) pyrolysis

Cited by 171 publications

References 40 publications

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Production and Characterization of Bio-Char from the Pyrolysis of Empty Fruit Bunches

Production of Bio-Oil from Pyrolysis of Olive Biomass with/without Catalyst

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