HYDROLYSIS OF CLAY FROM CAPKALA WITH VARIATION OF CHLORIDE ACID CONCENTRATIONS

Nelly Wahyuni, Imelda H. S., Yateman Arryanto, Sutarno Sutarno, Ya' Zupriadi

Abstract


Hydrolysis of clay from Capkala with variation of chloride acid concentratios has
been done. Hydrolysis of clay has been conducted by reacting clay in HCl with stirring during 24 hours.
Hydrolysis was conducted in several variations of HCl concentration at room temperature. Hydrolyzed clay
was characterized by the Atomic Absorption Spectophotometer, Infrared Spectophotometer, and X-ray
Diffractometer. The analysis of Spectophotometer of Atomic Absorption was not showed the decreasing of
aluminum content of hydrolized clay which is not the extrication of aluminum metal from clay structure.
Infrared spectra from hydrolized clay was not showed the eliminated of absorption peak for Al-OH bonds in
octahedral layer. Diffractograms of hydrolized clay was not showed the changing angle of 2θ but figuring the
increase of intensity of diffraction peak which indicates discharge of pollutant metals from clay structure.

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