Penentuan Kadar Fosfat pada Air Umpan Recovery Boiler dengan Metode Spektrofotometri UV-VIS di PT Toba Pulp Lestari, Tbk – Porsea

Abstract

Giving phospate into bait boiler water have a purpose to prevent korosi and deposit formation at boiler wall. Korosi and phospate formation are caused by chemical process of calsium and magnesium in the boiler water. If level of phospate is too high or low in bait boiler water, it will cause korosi and deposit formation that can cause heat wich not flatten at boiler and the energy that is needed at boiler is higher to produce steam. From analysis result is obtained level of phospate that is measured energy 3 hours that fulfill the rules specified by PT. Toba Pulp Lestari, Tbk Porsea equal is 5-10 ppm but the result of analysis by 5-8 ppm.