A Study of the Alkaline Solvolysis of Postconsumer Polyethylene Terephthalate in Primary C1 – C3 Aliphatic Alcohols

Sanda, O.; Taiwo, E. A.; Akinrinsola, M; Osinkolu, G.A.

doi:10.9734/acsj/2016/27697

Cited by 4 publications

(6 citation statements)

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“…The extent of conversion of PET in the equations presented above depends on the molecular mass of the alcohol used and its boiling point. The extent of conversion tends to decrease with molecular mass of the alcohol used as reported by Sanda et al [24]. However, the trend observed in Figs.…”

Section: Pet Solvolytic Decomposition Studysupporting

confidence: 62%

“…The microwave-assisted alkaline solvolysis of PET resulted in a higher conversion of PET, compared to conventional heating, irrespective of pigmentation. For ethanol and propan-1-ol media, the microwave-assisted reactions gave a higher conversion, although the general trend is not different from that reported in a previous work [24]. Based on the theory of PET alkaline solvolysis, the expected primary product is terephthalic acid [24,26].…”

Section: Comparison Between Conventional and Microwave Heating For Alsupporting

confidence: 45%

“…For ethanol and propan-1-ol media, the microwave-assisted reactions gave a higher conversion, although the general trend is not different from that reported in a previous work [24]. Based on the theory of PET alkaline solvolysis, the expected primary product is terephthalic acid [24,26]. For each experiment, a white powder was obtained and was subsequently subjected to various physical and chemical tests.…”

Section: Comparison Between Conventional and Microwave Heating For Almentioning

confidence: 53%

“…Studies done so far on the alkaline solvolysis of postconsumer PET in alcoholic media showed that it is possible to decompose PET according to the reaction mechanisms shown below [24,26]:…”

Section: Pet Solvolytic Decomposition Studymentioning

confidence: 99%

“…Taking into account the cost of processing the so-called "problematic" coloured PET bottles, an alkaline solvolysis approach was chosen for this study because it operates under less hazardous conditions, eliminating the need for corrosion resistant pressure vessels [17][18][19][20][21][22][23][24]. The aim of this study was to explore the application of microwave heating during the processing of pigmented PET via an alkaline solvolysis route with a view to examine the effects of various parameters such as pigmentation, reaction time and alkali dosage on the process and compare the results with that obtained from conventional heating methods reported in an earlier work.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effect of Flake Pigmentation on the Microwave-Assisted Alkaline Solvolysis of Postconsumer Polyethylene Terephthalate in Primary C1 – C3 Aliphatic Alcohols

Sanda

Ehinmitola

Kolapo

et al. 2019

CSIJ

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This study was carried out to examine the alkaline solvolysis of pigmented postconsumer polyethylene terephthalate (PET) in solutions of C1 – C3 primary alcohols via microwave heating. The effect of various process parameters such as flake pigmentation, time and sodium hydroxide concentration on the degree of PET degradation and product yield were studied for each alcohol. Response surface methodology (RSM) was used for predicting the optimal conditions for alkaline solvolysis of PET scrap, with Central Composite Design (CCD) for the two parameters chosen as the experimental design. The data obtained from measurement of properties were fitted as second-order equations. The findings of this study showed that the yield is independent of the pigmentation and that microwave-assisted alkaline solvolysis of pigmented postconsumer PET resulted in higher conversion within a shorter processing time, compared to conventional heating methods with identical products obtained in each case.

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Section: Pet Solvolytic Decomposition Studysupporting

confidence: 62%

Section: Comparison Between Conventional and Microwave Heating For Alsupporting

confidence: 45%

Section: Comparison Between Conventional and Microwave Heating For Almentioning

confidence: 53%

“…Studies done so far on the alkaline solvolysis of postconsumer PET in alcoholic media showed that it is possible to decompose PET according to the reaction mechanisms shown below [24,26]:…”

Section: Pet Solvolytic Decomposition Studymentioning

confidence: 99%