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By Robert Mournighan, Marzenna R. Dudzinska, John Barich, Marjorie A. Gonzalez, Robin K. Black

Those lawsuits offer a discussion board for chemical scientists and engineers devoted to creating a purifier, more healthy international for everybody. They hide quite a lot of comparable topics similar to environmental tracking, wastewater therapy, and sludge administration.

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27 TESTING OF SORPTION MATERIALS FOR ARSENIC REMOVAL FROM WATERS 500 0 400 t ^ Gm m AM3 o Zr-AC o 0 300 1 % Ig • • L 200^1 • • ' r *^ o o "•« * 100 f • 1 1 JJ• ' " . n ^ — . ^;J^ . * ' j g . ^ ^ ^ ^ . > 2000 10000 4000 6000 8000 in# '"^^^l 12000 pore volumes Figure 2. Column experiments, arsenate concentrations in the outlet of the columns A typical breakthrough curve was observed for the column filled with Zrloaded activated carbon after about 8000 pore volumes. 8 mg As/g. The concentrations in the outlet of the column with Absorptionsmittel 3 increased after about 4000 pore volumes, but no typical breakthrough curve was observed.

R^; 9: ~ — 1. -_ ^ o 00 "7 -p --* "Q E 8 '-•-. T3 § i^- 1 a> ZIRCONIUM(IV) LOADED DIAION CRP200 RESIN AS A SPECIFIC ADSORBENT TO AS(III) AND AS(V) '^ -zz '^ ^ C t* o '' i3 i i c 1 o ^ ^' C:: '^^ '^' "J a: 3 =" I E r 5 o r -i o w o ^ ^ ^ i X Ci< v t5 I') F 1 T3 4>^ zp> ^r ^ £ ' ? "^ ^ 3 Ck:: 7b6/e ^. Conditions and results of repeated removal of arsenite. ZIRCONIUM(IV) LOADED DIAION CRP200 RESIN AS A SPECIFIC ADSORBENT TO AS(III) AND AS(V) 43 Table 4 summarizes experimental conditions and results of 5 cycles of the adsorption-elution operation.

Suzuki, T. , Bomani, J. , Preparation of porous resin loaded with crystalline hydrous zirconium oxide and its application to the removal of arsenic. React, Funct. Polym. 2000, 43, 165-172. Suzuki, T. , Tanaka, D. A. , Tanco, M. A. , Adsorption and removal of oxo-anions of arsenic and selenium on zirconium(IV) loaded polymer resin functionalized with diethylenetriamine-N, N,N',N'-polyacetic acid, J. Environ. Monit, 2, 2000, 550-555. Suzuki, T. , Tanco, M. , Tanaka, D. A. , Adsorption characteristic and removal of oxo-anions of arsenic and selenium on the porous polymers loaded with monoclinic hydrous zirconium oxide, Sep.

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