Abstract
Potatoes are increasingly purchased as industrially processed products rather than in their raw state. Industrial processing concentrates the waste products of potato preparation onto relatively few sites and thus allows for recycling of the wastes to produce a variety of saleable byproducts. This paper describes the nature of the wastes produced and assesses a number of waste recovery technologies. The technologies considered are: starch recovery; starch recovery plus protein recovery; single cell protein production; methane production and alcohol production. Since potato processing wastes are mainly comminuted potato solids in waste waters the increasingly strict water pollution control regulations will stimulate the implementation of recycling schemes. Increasing oil prices will favour the adoption of methane and ethanol production in order to offset fuel costs.
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