Efektivitas Asam Nitrat (Hno3) Sebagai Pelarut Alternatif Pada Proses Acid Wash Terhadap Plate Electrolyzer Di Pt Kaltim Nitrate Indonesia

Abstract

INTISARIProses acid wash di electrochloronation merupakan proses pembersihan kerak menggunakan pelarut asam. Asam Chlorida (HCl) adalah pelarut asam yang paling umum digunakan untuk melarutkan kerak CaCO3. Penelitian ini bertujuan menentukan konsentrasi optimum HNO3 sebagai pelarut alternatif dengan mengkaji efektifitasnya menggunakan HCl sebagai pembanding. Sampel kerak diambil dari plate electrolyzer sebanyak 5 gram. Larutan HNO3 dan HCl diencerkan dalam beberapa variabel konsentrasi, 2%; 3%; 4%; 5%; dan 6%. Sampel CaCO3 dilarutkan dengan HNO3 dan HCl kemudian dihitung jumlah kerak yang terlarut. Banyaknya zat terlarut berbeda sesuai dengan konsentrasi pelarut.Hasil penelitian ini menunjukkan HCl dengan konsentrasi 3% tingkat kemolaran 0,83 M mampu melarutkan sebanyak 76,07% dari total sample kerak dan HNO3 dengan konsentrasi 5% tingkat kemolaran 0,81 M juga mampu melarutkan sebanyak 76,04% dari total sampel kerak CaCO3. Sehingga HNO3 dianggap mampu menjadi pelarut alteratif. ABSTRACTAcid wash process in electrochloronation is a removing scale process by using acid solvent. Hydrochloride acid (HCl) is the most common acid solvent used in this process. The purpose of this research is to determine the optimum concentration of HNO3 as an alternative solvent, by studying of the evectiveness using HCl as a comparison. 5 gram of CaCO3 scale is taken from plate electrolyzer. HNO3 and HCl are diluted into several concentration variables, 2%, 3%, 4%, 5%, and 6%. CaCO3 scale are dissolved with HNO3 and HCl then the number of dissolved scale is calculated. The concentration of solvent affects the amount of dissolved substances. This result showed 3% HCl with molarity 0,83 M is capable of dissolving as much as 76,07% of CaCO3 scale and 5% HNO3 with molarity 0,81 M is also capable of dissolving as much as 76,04 % of CaCO3 scale. So HNO3 can be the alternative solution.

Effect of EDTA Addition on Acidizing Treatment Process

“…Hydrochloric acid (HCl) is commonly used to address scale issues in production pipe, serving as the most common solvent to dissolve CaCO3 scale [7]. The reaction between HCl and carbonate effectively dissolves scale [8], posing the risk of pipe corrosion due to the high corrosiveness [9].…”