b    STUDY OF HEXAVALENT CHROMIUM SORPTION BY HYDROTALCITES SYNTHESIZED USING ULTRASOUND VS MICROWAWE IRRADIATION

 

S.P. Paredes-Carrera, R.F. Valencia-Martínez, M.A. Valenzuela-Zapata, J.C. Sánchez-Ochoa, L.V. Castro-Sotelo