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Nutrient Extraction from Spent Bedding and Pond Sludge

1 Pages

Author(s): Robyn Tucker

This project examined emerging technologies for extracting nutrients from piggery manure and converting them to fertiliser type products to appeal to broad acre farmers. The results demonstrated that while some bedding materials are suitable for anaerobic digestion and reuse, such as barley and wheat-straw based beddings the payback times and cost of extraction made them uneconomical. Stockpiled bedding and pond sludge are more effectively utilised in direct spreading methods.

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