Open AccessPerformance of an Argentinian acid-activated bentonite in the bleaching of soybean oil
Author(s) -
Edson Luiz Foletto,
Cristina Volzone,
Luismar Marques Porto
Publication year - 2003
Publication title -
brazilian journal of chemical engineering/brazilian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.313
H-Index - 52
eISSN - 1678-4383
pISSN - 0104-6632
DOI - 10.1590/s0104-66322003000200007
Subject(s) - bentonite , bleach , chemistry , nuclear chemistry , pulp and paper industry , soybean oil , mineralogy , chemical engineering , organic chemistry , food science , engineering
In this work, a bentonite clay from Mendoza, Argentina was activated with H2SO4 (4 and 8 N) at 90ºC for 2 and 3.5 hours. Under these conditions several cations were removed from the octahedral sheet (Mg, Al, and Fe) and the DTA-TGA curves of the solids obtained after treatment were modified. Treatment time and acid concentration increased the degree of destruction of the bentonite structure. Activated samples were tested in order to verify their capacity to bleach soybean oil and were compared to a standard commercial bleaching clay. Treated samples are more efficient in bleaching than the standard