Three-phases bubble column to polyethylene terephthalate depolymerization for cement mortar composites improvement

• Autorzy: Hameed A. M. , Alzuhairi M. , Ibrahim S. I.

Identyfikatory

DOI

10.5604/01.3001.0016.0284

• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper aims to prepare depolymerized polyethylene terephthalate (DPET) powder from recycled plastic water bottles. Adding this DPET powder to the cement mortar was also studied. Design/methodology/approach: The adopted PET depolymerization process includes the usage of both ethylene glycol (EG) as solvent and nano-MgO as a catalyst. A bubble column reactor was designed for this process. Five different mortar groups were made; each has different DPET content of 0%, 1%, 3%, 6% and 9% as a sand replacement. The flexural strength testand the water absorption measurement are done after two curing periods: 7 and 28 days. Findings: The research finding demonstrated that the flexural strength of mortar was reduced by increasing the DPET powder percentage and the maximum dropping was 15% when 9% of DPET was added. The ability of the mortar to absorb the water was reduced by 14.5% when DPET powder was 9%. The mortar microstructure is featured with fewer cavities and porosity. Research limitations/implications: This work’s employed bubble column technique is limited only to the laboratory environment and needs to be scaled up within industrial mass production. For future research, it is suggested to decrease depolymerization time by using smaller pieces of plastic water bottle waste and trying other types of nanocatalyst. Practical implications: The modified mortar can be utilized in areas where moisture, rainfalls, and sanitation systems exist. Originality/value: The article claims that depolymerized waste PET improves chemical process efficiency by lowering reaction time and improving mass and heat transfer rates. Besides, this approach saves money. It is found out that the depolymerized plastic waste is much more functional due to its high cohesion capability than being used as small PET pieces.

Słowa kluczowe

EN

depolymerization; DPET; plastic waste; bubble column; mortar; water absorption; flexural strength

PL

depolimeryzacja; odpady z tworzyw sztucznych; kolumna barbotażowa; zaprawa; absorpcja wody; wytrzymałość na zginanie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2022
• Tom: Vol. 112, nr 1
• Strony: 5--12
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Hameed A. M.

• Department of Materials Engineering, University of Technology, Baghdad, Iraq

• https://orcid.org/0000-0002-3552-5996

autor

Alzuhairi M.

• Department of Materials Engineering, University of Technology, Baghdad, Iraq

autor

Ibrahim S. I.

• Department of Materials Engineering, University of Technology, Baghdad, Iraq

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).