CAJ | 학술논문

研究了溶液中CO_3~(2-)对磷酸铵镁(MAP)法和羟基磷酸钙(HAP)法磷回收率的影响,并对回收磷所得产物进行了傅立叶变换红外光谱和X射线衍射分析.实验结果表明:为使磷回收率达80%以上,MAP法回收磷时n(CO_3~(2-)):n(Mg~(2+))必须小于0.5,HAP法回收磷时n(CO_3~(2-)):n(Ca~(2+))必须小于0.2;溶液中的CO_3~(2-)浓度对MAP法回收产物没有明显影响,但HAP法回收磷产物中会出现大量碳酸钙.
연구료용액중CO_3~(2-)대린산안미(MAP)법화간기린산개(HAP)법린회수솔적영향,병대회수린소득산물진행료부립협변환홍외광보화X사선연사분석.실험결과표명:위사린회수솔체80%이상,MAP법회수린시n(CO_3~(2-)):n(Mg~(2+))필수소우0.5,HAP법회수린시n(CO_3~(2-)):n(Ca~(2+))필수소우0.2;용액중적CO_3~(2-)농도대MAP법회수산물몰유명현영향,단HAP법회수린산물중회출현대량탄산개.
The effects of CO_3~(2-) on the phosphorus recovery by magnesium ammonium phosphate (MAP) process and hydroxyapatite(HAP) process were studied. The recovery products were analyzed by FTIR and XRD. The results show that; In order to make the phosphorus recovery rate over 80% , n(CO_3~(2-)) :n(Mg~(2+)) must be less than 0. 5 by MAP process, and n(CO_3~(2-) ) :n(Ca~(2+)) must be less than 0. 2 by HAP process; The concentration of CO_3~(2-) in the solution almost has no effect on the product by MAP process, but it may cause a lot of calcium carbonate in the product by HAP process.