ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATE
The sorption of contaminant ions existing in residual aqueous solutions onto nano-structured calcium silicate has been studied. The sorbent was prepared by chemical reaction between a soluble solution of sodium silicate and calcium hydroxide. X-ray diffraction analysis showed the amorphous character...
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| Lenguaje: | English |
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Sociedad Chilena de Química
2013
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oai:scielo:S0717-970720130002000232014-09-09ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATEVALENZUELA,FBASUALTO,CSAPAG,JIDE,VLUIS,NNARVAÉZ,NYAÑEZ,SBORRMANN,T Adsorption Pollutant ions Nanostructured calcium silicate Aqueous solutions The sorption of contaminant ions existing in residual aqueous solutions onto nano-structured calcium silicate has been studied. The sorbent was prepared by chemical reaction between a soluble solution of sodium silicate and calcium hydroxide. X-ray diffraction analysis showed the amorphous character of the obtained calcium silicate, although patterns associated to wollastonite, CaSiO3, and larnyta-syn, Ca2SiO4 were detected. The particle mean size was approximate 0.5 to 1.0 ìçé having an average BET surface area of 333.0 m²/g and a mean pore diameter variable between 15.8-23.6 nm. The nano-structured calcium silicates were contacted with industrial residual aqueous solutions containing, among others, Cu(II), Zn(II), Cd(II) and the anions PO4(3-), SO4' and CrO4', being copper (II) and phosphate the ions that were most easily and quantitatively adsorbed. The results of equilibrium experiments showed that the Redlich-Peterson adsorption isotherm model explained the experimental results for some metal ions.The experimental kinetics followed a pseudo-second-order kinetics model for Cu(II) and Zn(II) sorption.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.2 20132013-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200023en10.4067/S0717-97072013000200023 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Adsorption Pollutant ions Nanostructured calcium silicate Aqueous solutions |
| spellingShingle |
Adsorption Pollutant ions Nanostructured calcium silicate Aqueous solutions VALENZUELA,F BASUALTO,C SAPAG,J IDE,V LUIS,N NARVAÉZ,N YAÑEZ,S BORRMANN,T ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATE |
| description |
The sorption of contaminant ions existing in residual aqueous solutions onto nano-structured calcium silicate has been studied. The sorbent was prepared by chemical reaction between a soluble solution of sodium silicate and calcium hydroxide. X-ray diffraction analysis showed the amorphous character of the obtained calcium silicate, although patterns associated to wollastonite, CaSiO3, and larnyta-syn, Ca2SiO4 were detected. The particle mean size was approximate 0.5 to 1.0 ìçé having an average BET surface area of 333.0 m²/g and a mean pore diameter variable between 15.8-23.6 nm. The nano-structured calcium silicates were contacted with industrial residual aqueous solutions containing, among others, Cu(II), Zn(II), Cd(II) and the anions PO4(3-), SO4' and CrO4', being copper (II) and phosphate the ions that were most easily and quantitatively adsorbed. The results of equilibrium experiments showed that the Redlich-Peterson adsorption isotherm model explained the experimental results for some metal ions.The experimental kinetics followed a pseudo-second-order kinetics model for Cu(II) and Zn(II) sorption. |
| author |
VALENZUELA,F BASUALTO,C SAPAG,J IDE,V LUIS,N NARVAÉZ,N YAÑEZ,S BORRMANN,T |
| author_facet |
VALENZUELA,F BASUALTO,C SAPAG,J IDE,V LUIS,N NARVAÉZ,N YAÑEZ,S BORRMANN,T |
| author_sort |
VALENZUELA,F |
| title |
ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATE |
| title_short |
ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATE |
| title_full |
ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATE |
| title_fullStr |
ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATE |
| title_full_unstemmed |
ADSORPTION OF POLLUTANT IONS FROM RESIDUAL AQUEOUS SOLUTIONS ONTO NANO-STRUCTURED CALCIUM SILICATE |
| title_sort |
adsorption of pollutant ions from residual aqueous solutions onto nano-structured calcium silicate |
| publisher |
Sociedad Chilena de Química |
| publishDate |
2013 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200023 |
| work_keys_str_mv |
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| _version_ |
1718445488400760832 |