The New Separation Technology - Ferromagnetic Inorganic Ion Adsorbent To Remove Radioactive Waste In The ~ (137) Cs,

In this paper, the preparation of ferromagnetic compositeinorganic sorption material [FCISM] has been studied. The influenceof various parameters such as the sizes of FCISM particles and anions& cautions from waste water on the sorption property of FCISM hasbeen investigated. The tests of real waste water from CIAE andsimulated radioactive wastewater from PWR and BWR with FCISMhave been conducted. It can be concluded as follow:l. FCISM has been successfully made and its composition isinorganic sorption material: Fe₃O₄: polyacrylonitrile=5: 0.6: 0.53(Wt).2. The separation of FCISM from water is fast. FCISM in a 5mltube can be removed from water completely within 10 second.3. FCISM has high mechanical strength, excellent dynamic property,high selectve sorption property and good heat resisting property.4. The sorption capacity of FCISM containing Cd₂ [Fe(CN)₆] is0.5meq/g.The parameters of this FCISM are as below:When pH changes from l.0 to 9.70, K_d change froml 2.3 × l0⁴ml/g to 2.9l × l0⁴ml/g.When the concentration of Na⁺ changes from l0^-5M to lM, Kdfrom l0⁵ml/g to l0⁴ml/g. hn Ca2＋ oncentalon nrases rom 10"M to 0．IM,Kd Iom0．44x 05ml／g to 2．82 XI 05ml／g． henAl'"c。＂boon。asesfromlo"'Mtoo．IM,民rom13．lxlo'Im／g to．88ml／g．IWhen PO。'"concentalon changes from 3 X 10"'M to 0．3M,Kdfrom 2．17xl0'ml／g to＊7 XIO'ml／g． When EDM conCentalon is below 0．03M,民 changes rom0．sxl04ml／gtol．8x104ml／g2WhenED队coneo立n恤on Increasesfrom 0．03M,民 decreases sharply to zero． 5．WhCllFCISMCO血。illiflgCdZ［FC(CN)6］Is uSCdtO。bSOrbceslum rom simulated PWR waste,the equlllbrlum is reached within20ffilfllltCS sfidKd isl．40X 104ffil／g． WhenFCISM comainingAMP Is used,the equlllbrlum Is reachedwith 3 0 minutes and Kd is 3．5 0 X eml／g． 6．WhCflFCISMCO成。ifliflg CdZ［Fe(CN)6］Is llSCdtotfeatthCWSStC WatCf OfBWR,thC Cqllllforlllffi Is fCSChCd lfl 160 ilflllCtS ld Kdis 600ml／g． henFCISMco血ainingAMP Is used fortreatingBWRwasteWatC二 thC Cqlllllbflllffi Is fCSChCd lfl 40 iifl帆CS nd Kd isl．40X103ml／g． 7．Natural zeolite,ml�'�re ofn�'�raf sorption materials andFCI＊ h8VCmC SB＊C Kd Of＊ ＊offil／g,WhCfl thCy sfC pllt lfltowaste water ofChlna Institute ofAtomlc Ene侣y． 8．Thep�'�Ide size has little influence on乌 ofFCISM．...