Extraction of spent bleaching earth in the production of renewable diesel

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)

Interna författare/redaktörer

Publikationens författare: Vilppu Kuuluvainen, Päivi Mäki-Arvela, Kari Eränen, Anton Holappa, Jarl Hemming, Heidi Österholm, Blanka Toukoniitty, Dmitry Y. Murzin
Publiceringsår: 2015
Tidskrift: Chemical Engineering and Technology
Volym: 38
Nummer: 5
Artikelns första sida, sidnummer: 769
Artikelns sista sida, sidnummer: 776
eISSN: 1521-4125


The extraction of oils based on animal fat and vegetable oil from two types of spent bleaching earths, namely from the acidic sepiolite and the nonacidic palygorskite, was investigated by the Soxhlet method with hexane as a solvent. The yields of oil were independent of the feedstock, whereas a much lower oil yield was obtained with palygorskite exhibiting also a smaller surface area as compared to sepiolite which provided a higher yield. The glyceride compositions were very similar in bleached and extracted oils, while slightly lower melting and crystallization energies were determined by differential scanning calorimetry for the extracted oils bleached with acidic clay indicating minor hydrolysis of triglycerides.

Senast uppdaterad 2019-14-12 vid 03:41