Effect of kaolin addition on alkali capture capability during combustion of olive residue

Date

2019-01-02

Author

Batır, Özge
Selçuk, Nevin
Külah, Görkem

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

236
views

0
downloads

The effect of kaolin addition on the combustion characteristics of olive residue was investigated by thermogravimetric analysis (TGA) combined with Fourier-transform infrared (FTIR) spectrometer in parallel with ash characteristics were studied by X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyzer. The experiments were carried out by burning olive residue with 2%, 4% and 8% by wt. kaolin at 900 degrees C. Results indicate that the addition of kaolin led to a decrease in the rate of weight loss during char combustion and hence an increase in CO emission. This was due to a decrease in burning quality caused by the dilution effect of kaolin in the mixture. The increase in HCl(g) and SO2(g) concentrations with kaolin addition observed in FTIR results evaluated together with XRF and XRD results demonstrates the pathway of reactions for the capture of potassium by kaolin and formation of high-melting-temperature kalsilite crystals. Potassium retention in ash was found to increase up to 4% kaolin content; however, no significant improvement in potassium retention was observed with further addition of kaolin owing to the abundant amounts of Al and Si introduced via kaolin. The results show that 4% kaolin is the optimum content at which the alkali index decreases below unity, indicating reduced tendency of fouling in combustion systems.

Subject Keywords

Additive, Kaolin, Biomass, Olive Residue, Combustion

URI

https://hdl.handle.net/11511/30341

Journal

COMBUSTION SCIENCE AND TECHNOLOGY

DOI

https://doi.org/10.1080/00102202.2018.1452376

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Investigation of effect of kaolin addition on combustion characteristic of olive residue Batır, Özge; Külah, Görkem; Selçuk, Nevin; Department of Chemical Engineering (2017) In this thesis study, effect of kaolin addition on combustion characteristic of olive residue was investigated by using thermogravimetric analyzer (TGA) combined with Fourier-transform infrared (FTIR) spectrometer in parallel with ash characteristics by X-Ray Fluorescence (XRF) and X-Ray Diffraction (XRD). The experiments were carried out by burning olive residue with 2%, 4% and 8% by wt. kaolin at 900˚C. Results reveal that addition of kaolin leads to decrease in rate of weight loss during char combustion ...
Effect of post-processing heat treatment on the mechanical properties of inconel 718 fabricated by selective laser melting Özer, Seren; Dericioğlu, Arcan Fehmi; Department of Metallurgical and Materials Engineering (2020) In this study, effect of the building direction and post-processing heat treatments on the microstructure and high temperature mechanical properties of as-fabricatedInconel 718 alloys have been investigated. Inconel 718 samples were fabricated in two different building directions such that their longitudinalaxes wereeither parallel (horizontally built) or perpendicular (vertically built) to the building plate. During the selective laser melting (SLM)process, some undesired features can...
Effect of Calcination on Microstructure and Antibacterial Activity of Silver-Containing Silica Coatings Durucan, Caner (Wiley, 2010-05-01) Silver nanoparticle containing silica coatings on soda-lime glass were prepared by the sol-gel process The effect of thermal densification treatment at different temperatures in the range of 100-700 degrees C on microstructure and antibacterial properties of the coatings were examined The structural characterization of the coatings was performed by using scanning electron microscope, X-ray diffraction, UV-visible and X-ray photoelectron spectroscopy (XPS), and atomic force microscope (AFM) The antibacterial...
Effect of expandable graphite on flame retardant, thermal and mechanical properties of thermoplastic polyurethane composites filled with huntite&hydromagnesite mineral Guler, Turkan; Tayfun, Umit; Bayramlı, Erdal; DOĞAN, Mehmet (2017-01-10) The effect of expandable graphite (EG) was studied on the flame retardant, thermal and mechanical properties of thermoplastic polyurethane (TPU) containing huntite&hydromagnesite (HH). According to the flammability tests results, the synergistic interaction was observed between HH and EG. The maximum limiting oxygen index (LOI value was observed at a ratio of 1:1 (HH:EG) and the highest vertical burning test (UL-94) rating of V0 was observed at a ratios of 4:1, 3:2 and 1:1. The synergistic interaction betwe...
Effect of Cu addition on the microstructural constituents and mechanical properties of twin roll cast AlFeMnSi alloys Meydanoglu, Onur; Birbaşar, Onur; Ulus, Ali; Beyhan, Bariş; Kalay, Yunus Eren (2015-01-01) In this study, the effect of copper addition on microstructural evolution, mechanical and corrosion properties of twin roll cast (TRC) AlFeMnSi alloy system mainly used in container foil applications was investigated. Microstructural characterization studies were conducted on as-cast, homogenization annealed and final products by employing optical and scanning electron microscopes. The mechanical properties of the samples obtained from compositional were determined at the thickness of final product by tensi...

Citation Formats

Ö. Batır, N. Selçuk, and G. Külah, “Effect of kaolin addition on alkali capture capability during combustion of olive residue,” COMBUSTION SCIENCE AND TECHNOLOGY, pp. 43–53, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30341.