Conditioning of poultry manure ash for subsequent phosphorous separation and assessment for a process design

Phosphorus is a strategic resource that cannot be substituted in the foods and pharmaceutical industries. It an irreplaceable macronutrient for crops, cells, humans animals. The supply risk can lead to geopolitical problems, it urgent encourage development of environmentally sustainable recovery technologies phosphorus from various alternative materials. Poultry manure ash produced inside fluidized bed reactor could constitute phosphate ores. Therefore, two representative samples has been investigated by combining leaching solvent extraction under optimal conditions. mineralogy these studied detail get relevant information designing process. Although relative abundances phases vary between samples, phosphorous mainly present as hydroxyapatite mineral similar amounts all particle fractions. Potassium, magnesium, sodium are located other (K-Na-Mg sulfates K-(Na)-chlorides) mixed with main Ca-phases, calcite hydroxyapatite. poultry ashes were digested dilute sulfuric acid at liquid-to-solid ratios ranging L/S = 10 mL/g 5 mL/g. About 90 wt% was leached concentration ratio