Analisis pembuatan dan penggunaan koagulan poly aluminium chloride (PAC) pada proses penjernihan air

Abstract

Background: Poly Aluminum Chloride (PAC) is a complex inorganic compound between hydroxyl (OH) ions and aluminum ions which undergo gradual chlorination. PAC is able to coagulate suspended substances or colloidal dispersions to produce floc that easily settles. Methods: The raw materials used in the manufacture of PAC consist of alumina hydrate Al (OH) 3, hydrochloric acid (HCl), sulfuric acid (H2SO4), and calcium carbonate (CaCO3). The experiments were carried out by reacting Al (OH) 3 as much as 100 grams, HCl as much as 180 ml, and H2SO4 as much as 127.1 grams at 90 ° C and 100 ° C temperature variations with time variations of 30s, 60s, and 90s. The characterization was tested in the form of a jar test and FTIR test. Finding: In the Jar Test, the optimum temperature and time are obtained at 90 ° C and 60s and at 100 ° C and 60s. At the optimum jar test results, the FTIR test was performed. Conclusion: From the test results, this study meets PAC manufacturing standards.