Ability Test of C-4-Methoxyphenyl-Calix[4]resorcinarene as An Inhibitor of Calcium Carbonate (CaCO3) Crust Growth at Various Concentration Suryadi Budi Utomo, Lathifah Ramadhani, Kisti Makrifatul Hanifah, and Elfi Susanti V.H
Department of Chemistry Education, FKIP, Universitas Sebelas Maret
Jl. Ir. Sutami No. 36A, Surakarta, Central Java, Indonesia 57126
Abstract
The aim of this research were to determine the ability of C-4-methoxyphenyl-calix[4]resorcinarene to inhibit the formation of CaCO3 crust in several concentrations of inhibitor and various time. The research method used is an experimental laboratory method, using a growth solution of 0.1 M and concentrations of C-4-methoxyphenyl-calix[4]resorcinarene of 0, 5, 10, 20 and 40 ppm. The working procedure begins with the preparation of seed crystals which will be used to determine the rate of crystal growth. The results of this research obtained that the C-4-methoxyphenyl-calix[4]resorcinarene compound can inhibit the scale formation rate of CaCO3. The use of C-4-methoxyphenyl-calix[4]resorcinarene as an inhibitor of CaCO3 scale can be effective if it is balanced with temperature control in the heating process. The greater concentration of inhibitor the more effective in inhibiting the growth of CaCO3 scale. The most effective scale reduction occurs at the inhibitor concentration of 20 ppm at contact time of 40 minutes. Calixarene acts as a scale growth inhibitor by absorb metal ions of Ca2+ using several active functional group so that crust cannot be formed
