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   Refining of Edible Oils & Re-refining of Mineral Oils     Raw Material and its Source     Structure of Montmorillonite    Quality Assurance
Our Brand GOODEARTH and its types    Prepartion & Activation of Crude Bentonitre      Advantages of Using Goodearth      Contact Us


Edible Oils and Fats - Role of GOODEARTH Bleaching Earths
Since the advent of twentieth century Bleaching Earths have been used for the refining of edible oils and fats. Despite of technological advances over the years the application of Bleaching Earths is still of great importance today. Edible oils and fats are prominent items of consumption in every household throughout the world. The present production is substantial and according to reliable predictions, a further rise in production and demand is to be expected for the coming decades. These figures demonstrate the significance of Bleaching Earth in relation to supply of nourishment to world's increasing production.

Bleaching Earths are appreciated for their power to de-colourise edible oils and fats. But times are changing and attention is now being focused on the achievement of refined oils with enhanced shelf life in terms of flavour and odour stability. Bleaching Earths play an important role in reducing the level of pigments, trace metals, phosphatides, residual soaps, oxidation products and enhance the stability of fully refined oils.

People are getting more and more health conscious all over the world.  They are looking for food items fully refined and rendered free of harmful ingredients. Highly Activated Bleaching Earths remove oxidation products from oils and fats which threaten to clog arteries leading to heart ailments. Physical refining is not able to achieve this task satisfactorily and as such the oil mills have to resort to refining by Bleaching Earths side by side.

In this context, it is said that, Bleaching Earths play an important role in promoting longer life.

Our grade GOODEARTH Super FF (Fast Filtration) is best suited for application in this field.

Re-refining of Mineral Oils
Re-refining of lubricants is increasing in popularity in the waste oil regeneration process. After primary purification and dehydration process, waste oil is given heat treatment at approximately 300 C to achieve decomposition of additives. Then treatment with Sulphuric acid for separation of acid tar precipitates follows. Subsequently it is subjected to contact distillation i.e. treatment with Bleaching Earth at 300 C under vacuum. Under these very dry drastic conditions Bleaching Earth acts both as cracking catalyst and as an adsorbent. During the cracking process long chain polymers and oxidized components are first split and then removed by distillation. Non volatile impurities e.g. acid tar and acid sludge as well as sulphonic acids are adsorbed. The re-refined lubricating oil can be used to produce a high grade lubricant.

Our highly active grade viz GOODEARTH LFF is suitable for this application.



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