Activated bleaching earth
1.bleaching earth characters:
1) strong decoloring-ability
2) good adsorption
3) low free acid
- bleaching earth working:
emerge and separate some matters, such as pigment,colloid,impurity,dram heavy metal in lipid which can cause oxidant and activator toxic.
- bleaching earth usage:
Broadly speaking, activated bleaching earth finds use in following fields:
1) Refining of Vegetable oils like :
Cottonseed, Soyabean, Sunflower, Rapeseed, Mustard, Peanut, Coconut, Corn, Olive, Ricebran, Palm, Linseed, Castor, tung oil and so on.
2) Refining of hydrogenated vanaspati ghee oils, Margarine & shortening.
3) Refining of Animal Fats like tallow oil, fish oil, lard oil.
4) Refining of Mineral Oils like:
- paraffin and waxes
- insulating oil
- rolling oil
- white oil
- waste oil (lubricating oil)
- vaseline
- olefin
