Abstract
Several process steps are required to decolourize sugar liquor in a raw sugar refinery. One typical treatment step employs ion exchange columns (IEX) to reduce the colour in the sugar liquor. An alternative process step is using granular activated carbon (GAC) in pulsed bed adsorption columns to decolourize the sugar liquor. This paper compares the installation of a GAC against an IEX plant concerning space demand, investment costs, operating costs, performance and environmental aspects in a VHP raw sugar refinery.
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