RT journal article
T1 Diatomite releases silica during spirit filtration
A1 Gómez Benítez, Juan
A1 Gil Montero, María Luisa Almoraima
A1 Rosa Fox, Nicolás Daniel de la
A1 Alguacil, Marcos
A2 Ingeniería Química y Tecnología de Alimentos
A2 Química Física
A2 Física de la Materia Condensada
K1 Diatomite
K1 Filtration
K1 Filter Aid
K1 Spirit
K1 Brandy de Jerez
K1 Silica
K1 Calcium
AB The purpose of this study was to ascertain whether diatomite is an inert filter aid during spirit filtration. Surely, any compound with a negative effect on the spirit composition or the consumer’s health could be dissolved. In this study different diatomites were treated with 36% vol. ethanol/water mixtures and the amounts and structures of the extracted compounds were determined. Furthermore, Brandy de Jerez was diatomite- and membrane-filtered at different temperatures and the silicon content was analysed. It was found that up to 0.36% by weight of diatomite dissolved in the aqueous ethanol and amorphous silica, in the form of hollow spherical microparticles, was the most abundant component. Silicon concentrations inBrandy de Jerez increased by up to 163.0% after contact with diatomite and these changes were more marked for calcined diatomite. In contrast, reductions of more than 30% in silicon concentrations were achieved after membrane filtration at low temperatures.
PB ELSEVIER
SN 0308-8146
YR 2014
FD 2014-01-01T00:00:00Z
LK http://hdl.handle.net/10498/17433
UL http://hdl.handle.net/10498/17433
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026