Introduction

Sugar industry is one of the most important agro industries in India as well as in World.There are more than 300 sugar mills in India and approx more than 100 lakhs tonnes of sugar is produced.Sugar factory produces bagasse,pressmud and molasses as important by products.Sugar is primarily a Sucrose, composed of D- Glucose and D-Fructose.On commercial grade sugar is extracted from cane and beet the most important plants.

Molecular formula for sugar is C₁₂H₂₂O_11.

Sugar is the material of greatest food value.It is capable of producing more calories than any other food crop.It is the cheapest source of calories known. It contains all energy and no proteins, no vitamins and no minerals.

The present method of sugar manufacture comprises of four basic steps:

• Crushing of Cane (cleaning, maceration & milling)
• Bleaching and clarification
• Crystallization
• Centrifugation                                  

 

Sugar Decolourisation

A marketable sugar must be white. However the standard of WHITENESS of sugar varies throughout the world, normally color range of less than 150 ICUMSA is acceptable by most of the countries as the standard for sugar colour.

The colour of sugar is mainly due to the carry over of colour causing complex bodies present in the natural source of material like sugar cane, beet or starch based products.

To obtain high quality sugar, the colour bodies should be removed to the maximum possible level without deteriorating the sucrose content. The conventional methods like bleaching with sulfur dioxide or removal with activated carbon/animal charcoal has been far more less important since the introduction of new generation Ion Exchangers for this process.The process of decolourisation by the Ion Exchange is the exchange of ions as well as adsorption.

Ion Exchange Resin Process.

Ion Exchange have successfully introduced the ion exchange speciality INDION resins for decolourisation of sugar melt.This technology has synergistic effect with phosflotation and carbonation.It operates by passing the pretreated sugar melt through a combination of speciality ion exchange resin columns.

Advantages of Ion Exchange Resin Technology

• High degree of decolourisation: The ion exchange process is very rapid & hence the contact time required is very less.
• Low Capital investment: The bed depth can be shallow & the low rates can be high. Therefore the size of the equipment can be small & therefore less space requirement.
• Ease of operation: Minimum of manpower and product losses a continuous process with low operating cost.

Applications

• INDION speciality resins are specially developed to give optimum adsorption during regeneration, of a wide range of colour bodies typically present in raw sugar and those produced as a result of the Milliard's reaction.
• Better affinity for colouring matters in chloride form,it can be effectively used as a decolouriser in processing of sugars, starch hydrolysates, textile processing wastewater etc.

Clients:

• BMS Sugar factory
• Simbholi Sugar Factory

 

 

 

 

 

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