Marble sludges as environmentally friendly catalyst in olive pomace pyrolysis: Effect of sludge composition on pyrolysis product distribution and biochars
Abstract
Waste management of olive pomace is difficult because of the high production amount and nonbiodegradable organic substances. Catalytic pyrolysis process is one of the effective methods for olive pomace (OP) management and for obtaining valuable organic substances from it. Therefore, in this study, different types of marble sludge were used as catalyst in the olive pomace pyrolysis process at 500°C temperature and 40% catalyst dose. While K1, K2, K3 are the sludges obtained from physicochemical treatment of travertine type marble processing wastewater with alum, FeCl3 and PEL, respectively, K4, K5 and K6 are the corresponding physicochemical treatment sludges of natural stone type marble processing wastewater. Pyrolysis product yields and characteristics of pyrolysis biochars were investigated. The highest product yield for biochar liquid and gas fractions was obtained with the K1 catalyst. The biochar obtained for OP+K1 pyrolysis has the highest initial decomposition temperature. Biochar obtained by using K6 was more granular. Biochar having the highest calorific value (1193 cal/g) was obtained with the catalytic pyrolysis of OP with K4 catalyst. Biochars obtained with the K1 and K6 catalysts has similar calorific values. Besides calorific values, the characteristics of biochars indicated that these biochars can be used diverse purposes either as additive or feedstock. Consequently, K1 catalyst can be recommended for olive pomace catalytic pyrolysis when biochars are evaluated in terms of product yield and biochar characteristics.
Supporting Institution
TUBITAK
Project Number
TUBITAK-CAYDAG-118Y475
Thanks
The authors gratefully acknowledge the TUBITAK Bilateral Joint Research Project (Turkey [TUBITAK-CAYDAG-118Y475] and Japan [JSPS], grant No. JPJSBP12019942) for financial support
References
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Abstract
Project Number
TUBITAK-CAYDAG-118Y475
References
- TEPGE website https://arastirma.tarimorman.gov.tr/tepge/Belgeler/PDF%20%C3%9Cr%C3%BCn %20Raporlar%C4%B1/2021%20%C3%9Cr%C3%BCn%20Raporlar%C4%B1/Zeytinya%C4%9F%C4%B1%20%C3%9Cr%C3%BCn%20Raporu%202021-350%20TEPGE.pdf, [Online]. Available (2022).
- Ü. Mutlu, “Pyrolysis of different biomass samples and characterisation of the products,” M. Eng. thesis, Anadolu University Institute of Science and Technology, Turkey,2012.
- A. Koutinas, S. Papanikolaou, “Handbook of biofuels production–processes and technologies”, Woodhead Publishing Limited, Abington Hall, Granta Park, Great Abington,2011.
- A. Seçer, A. Hasanoğlu, “Çan Linyitinin Katalitik Gazlaştırılması Ile Hidrojen Eldesi”, Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Vol.9, pp.223-232,2019.
- J. Encinar, J. Gonzalez, G. Martínez, S. Roman, “Catalytic pyrolysis of exhausted olive oil waste”, Journal of Analytical and Applied Pyrolysis, Vol.85, pp. 197-203,2009.
- A. Çağlar, A. Demirbaş, “Hydrogen rich gas mixture from olive husk via pyrolysis”, Energy Conversion and Management, Vol.43, pp. 109-117,2002.
- G. Dinç, “Towards a sustainable waste management in olive mill through olive pomace pyrolysis”, M. Eng. Thesis, Selcuk University Institute of Science and Technology, Turkey,2018.
- D Yılmaztürk, “Andezit Işleme Atıksuyunun Fizikokimyasal Arıtımı,” M. Eng. Thesis, Selcuk University Institute of Science and Technology, Turkey,2011.
- V. Önen, P. Beyazyuz, E. Yel, “Removal of turbidity from travertine processing wastewaters by coagulants, flocculants and natural materials,” Mine Water Environ.Vol.37, pp.482–492, 2018.
- D. P. Serrano, J. Aguado, J. M. Escola, J. M. Rodriguez, A. Peral, “Catalytic properties in polyolefin cracking of hierarchical nanocrystalline HZSM-5 samples prepared according to different strategies,” Journal of catalysis, Vol.1, p.276, 2010.
Details
| Primary Language | English |
|---|---|
| Subjects | Environmental Engineering |
| Journal Section | Research Articles |
| Authors | |
| Project Number | TUBITAK-CAYDAG-118Y475 |
| Publication Date | June 30, 2023 |
| Submission Date | November 24, 2022 |
| Acceptance Date | April 5, 2023 |
| Published in Issue | Year 2023 Volume: 6 Issue: 2 |
