Projects per year
This report describes the results of the research into the phosphate forms and the potential of recovery of phosphate from dairy manure. On different dairy farms with different types of manure separators, slurry robots and scrapers samples were taken from the manure, liquid fraction, thick fraction and/or faeces and analyzed on the content of different phosphate forms. Furthermore calcium hydroxide was added to the liquid fraction to separate the orthophosphate with the sediment and are the thick fractions diluted and acidified to pH 6 and 5 to determine the amount of phosphate being released as orthophosphate. On the basis of these analysis is the potential for recovery of phosphate determined.