This work applied batch experiments and fluidized bed homogeneous crystallization (FBHC) to recover dominative nutrients such as phosphorus - P and nitrogen – N contained in swine manure as MgNH4PO4.6H2O (MAP, liquid fraction) and CaHPO4 (Monetite, solid fraction). Recovered nutrients contained in both fractions were conducted by separating between liquid and solid fraction by using sedimentation. Liquid swine manure was used to recover nitrogen by FBHC at the optimum value of pH 9.0, surface loading (L) of 1.0 kg m-2hr-1 for an input concentration of nitrogen contained in swine manure of 358.4 mg/L, resulting in the total removal (TR) of more than 97.4% and crystallization ratio (CR) of 94.6%. The XRD and EDS analysis confirmed the pellet product was MAP precipitation (MgNH4PO4.6H2O). Sulfuric acid (H2SO4) is the most effective method to disintegrate phosphorus from solid fraction into leachate among three methods such as thermal, oxidants and acidic and alkaline treatment in solid fraction experiment with the leaching efficiency of N and P is 100% (34.1g/kg of N and 80.9g/kg of P). With the molar concentration of H2SO4 0.1M, 50: 1 of liquid to solid - L(ml)/S(g) ratio and 5g of manure has a high leaching efficiency which 420 mg/L of P and 170 mg/L of N could obtain in leachate. Subsequently, the phosphorus in leachate was recovered at the optimal pH 7.5, calcium to phosphorus ratio (Ca/P) of 1:1, resulting in more than 84.14% phosphorus removal with the purity of product more than 94%. EDS and FTIR analysis confirmed the precipitation product was monetite precipitation (CaHPO4). MAP precipitation could not form as the high concentration of interference cations (Ca2+), which intend to precipitate with phosphorus to form Ca-P precipitation than MAP precipitation.

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