Hydrogen enriched syngas production via gasification of biofuels pellets/powders blended from olive mill solid wastes and pine sawdust under different water steam/nitrogen atmospheres. (26th April 2019)

• Record Type: Journal Article
• Authors: Zribi, M.; Lajili, M.; Escudero-Sanz, F.J.
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 22(2019)
• Page Start: 11280
• Page End: 11288
• Publication Date: 2019-04-26
• Subjects: Biomass -- Pyrolysis -- Gasification -- Syngas -- Rate of conversion -- Char reactivity; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.10.021
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this work, we study the gasification of pellets produced, after densification, by blending olive mill solid wastes, impregnated or not by olive mill waste water, and pine sawdust under different steam/nitrogen atmospheres. The charcoals necessary for the gasification tests were prepared by pyrolysis using a fixed bed reactor. The gasification technique using steam was chosen in order to produce a hydrogen-enriched syngas. Gasification tests were performed using macro-thermogravimetric equipment. Tests were carried out at different temperatures (750 °C, 800 °C, 820 °C, 850 °C and 900 °C), and at different atmospheres composed by nitrogen and steam at different percentages (10%, 20% and 30%). Results show that the mass variation profiles is similar to the usual lingo-cellulosic gasification process. Moreover, the increase of temperatures or water steam partial pressures affects positively the rate of conversion and the char reactivity by accelerating the gasification process. The increase of the gasification yields demonstrates the promise of using olive mill by-products as alternative biofuels (H2 enriched syngas). Highlights: 4 chars were prepared under slow pyrolysis. Gasification tests under steam/Nitrogen were performed with pellet/powder states. Steam molar fraction and temperature influences positively the process. Impregnation process is advantageous for gasification yields. Olive mill wastewater is converted from a pollutant to a renewable energy source.