Valorization of banana peel waste via in-situ catalytic pyrolysis using Al-Modified SBA-15. (September 2019)

• Record Type: Journal Article
• Authors: Ozbay, Nurgul; Yargic, Adife Seyda; Yarbay Sahin, Rahmiye Zerrin; Yaman, Elif
• Is Part Of: Renewable energy. Volume 140(2019)
• Page Start: 633
• Page End: 646
• Publication Date: 2019-09
• Subjects: Al-SBA-15 -- Banana peel -- Biomass -- Catalytic pyrolysis -- Mesoporous catalysts; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2019.03.071
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: The present study is aimed to investigate thermal and catalytic pyrolysis of banana peel. In the first part of the study, banana peel was pyrolyzed by varying the temperatures between 400 and 700 °C. It was seen that higher temperature caused in lower bio-oil and bio-char yields but higher gas yields and optimum temperature was determined as 550 °C. In the second part, the mesoporous material Al-SBA-15 with the typical hexagonal arrangement of SBA-15 verified via XRD possesses Lewis and Brönsted acid sites (NH3 -TPD), large surface area and wide pore diameter (N2 physisorption) was able to catalyzing of banana peel biomass resulting in bio-oil yields of 18–28% with varying catalyst/biomass ratios (0, 5, 10, 15, 20 wt%). The highest bio-oil yield from the catalytic pyrolysis was 18.64% with 15 wt% catalyst/biomass ratios. The composition and physical properties of the bio-oils were reported that the catalyst increased oxygen removal from the bio-oil and also developed the production of desirable products like phenolics and aromatic compounds. The results confirmed the catalytic pyrolysis of banana peel was well related to the textural properties of catalysts. Graphical abstract: Image 1 Highlights: The thermal and catalytic pyrolysis of banana peel was perfomed. Al- SBA-15 was prepared by the incipient wet impregnation of SBA-15. The mesoporous material Al-SBA-15 showed the typical hexagonal arrangement of SBA-15, large surface area and Lewis and Brönsted acid sites. 27 Al-NMR spectra showed that alumina was deposited on the silica support mainly in the form of octahedral Al(VI) and tetrahedral Al(IV). Catalyst/biomass blending ratio affected the yields of products and the composition and quality of bio-oils.