| 摘要 |
<p>This phosphorous recovery agent is characterized by being in the form of porous particles and containing a compound represented by the following general formula: (M1Oa(M2CO3)ß(M3(OH)2)1-a-ß)·?SiO2·dH2O·eX (wherein, a, ß, ?, d and e are within the following ranges: 0=a=1, 0=ß=1, 0<a+ß=1, 0.01=?=20, 0=d=10, and 0=e=0.1. M1, M2, and M3 represent magnesium, calcium or one or both of said metals; and X represents one or more from among Na2SO4, NaCl, and CH3COONa).</p> |
