PEMBUATAN PUPUK KALIUM SULFAT (K2SO4) Dari NATRIUM SULFAT (Na2SO4) DAN KALIUM KLORIDA (KCl) DENGAN PROSES SINGLE STAGE

Abstract

Potassium fertilizer is one type of fertilizer needed by most farmers in Indonesia, because most nutrients are potassium in the soil is still relatively small. One type of potassium are potassium sulfate that had been made with the long or double stage process is more complicated. This research will study the possibility of making potassium sulphate by using single stage by reacting sodium sulfate and potassium chloride in the reactor by means of crystallization. Single stage process is easier and more efficient in the making. Accordingly, the formulation of problems that can develop is Is with single stage process to produce potassium sulfate crystals with a high yield. The purpose of this study was to develop a single stage method which is easier and simpler to obtain potassium sulphate and optimum operating conditions. In addition to the purity of potassium sulfate crystals results obtained. The main ingredient in this study are sodium sulfate (Na2SO4), potassium chloride (KCl) and potassium sulfate (K2SO4). Initial procedure is the preparation of raw materials by weighing the material. The experiment was done with two variations namely with the addition and without addition of potassium sulfate (K2SO4). Then add water to the mixture until the volume limit. For more rapid crystallization process is formed, used electric stove to heat the material. The next process is to separate water from sediment filtration, using filter paper, which will form K2SO4 crystals. In order to more quickly dry the oven used to dry the K2SO4 crystals. The results showed that the most influential variable on the mole ratio is the ratio of K2SO4: Na2SO4: KCl = 1: 1: 8 with a salt content sebesar30% purity is obtained that is equal to 96.83% and the largest yield obtained was 72.14 in comparison mole ratio of K2SO4: Na2SO4: KCl = 0: 1: 8 with a salt content of 40%.