Determination of the influence of organic and inorganic impurity on physico-chemical properties of detergent zeolite type 4A

Abstract

This paper shows the synthesis of detergent zeolite type 4A, on the precise conditions of crystallization with time of 4 hours at 85°C. Zeolites without impurities were synthesized with clean raw material and also zeolites with the addition of organic and inorganic impurities by adding the following substances: Na2SO4, CaSO4, CaCl2, FeSO4 i Na2C2O4. The studies were conducted in laboratory conditions and enabled the definition depending on the physical and chemical characteristics of zeolite from the influence of impurities in comparison with zeolite obtained without impurities. For the characterization of the resulting zeolite was used Atomic absorption spectrophotometry, X-ray structural analysis, as well as classical chemical analysis. This synthesis shows that sulfates in any form significantly deteriorate the quality of the obtained zeolite in contrast to chloride ions. Oxalates worsen its quality to all tested parameters (eg. JIK 80.52 mgCaO / g dry zeolite). We have to be careful especially with the concentration of Fe 3+ ions as significantly reduce the whiteness (88.40%) at a concentration of 0,08g/L. These studies have opened up new possibilities for studying the influence that impurities have on zeolites. Some impurities lead to changes in the crystal structure so we do not get a 4A type than zeolite different structure which has worse characteristic.