Applied Sciences
OPEN ACCESS
Thermoregeneration Of Spent Perlite After Freezing Vegetable Oil
DOI
Crossref DOI
10.37547/tajas/Volume07Issue09-05
tajas
2025
VOL. 7
/ NO. 09
SEPTEMBER
RESEARCH OVERVIEW
Abstract
This article presents the possibility of regenerating spent perlite after the freezing process of vegetable oil. It was established that the composition of spent perlite contains up to 70% wax-like substances. Their combustion leads to the restoration of perlite as a filtration material or as a secondary raw material for obtaining silicon dioxide. It was determined that after calcination at 500–550°C for 120 minutes, the yield of calcined perlite amounts to 25%, while further temperature increases have little effect on yield, which indicates that the entire organic fraction burns out within this temperature range.
RESEARCH TOPICS
Keywords
Perlite
silicon dioxide
regeneration
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References
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