Question

7. In the fining of sugar, final decolourisation is done by adding.....
(a) lime
(b) CO2
(c) bone charcoal (d) SO2

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Answer 1

I think Lime .........

Answer 2

In the fining of sugar, final decolourization is done by adding (c) bone charcoal.

Explanation:

• Each step of the sugar production process includes the addition of colour precipitants.
• Diatomaceous earth, a filter aid designed for sugar processing, is used to filter the carbonated liquors in pressure leaf filters.
• Carbon adsorbents, such as granular activated carbon or bone charcoal, or ion-exchange resins made of acrylic or styrenic materials, further decolorize the resulting yellow to light brown liquor.
• Decolorization takes place in columns in a variety of serial and parallel configurations.

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