International Sugar Journal

Results from the commercial operation of a fractal shallow-bed ion exchange decolorizer [Full subscriber]

Abstract The use of relatively shallow resin beds, in conjunction with efficient fractal fluid distribution, has been shown to reduce both the capital and operating costs of ion exchange systems. The use of highly efficient fractal distributors reduces the amount of waste regenerant produced and minimizes process dilution, which are critical factors in a successful sugar refining application. Regenerant use can further be optimized by means of partial recycle and the membrane filtration of regenerant waste (either using nanofiltration or high pressure reverse osmosis) for brine recovery. The shallow resin depth allows for the use of more kinetically-efficient resins of…

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