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All Journal Metalurgi
Anistasia Milandia
Sultan Ageng Tirtayasa University
Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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A Preliminary Study of Cobalt Solvent Extraction from Nickel Sulphate Solution Using Organic Extractant-PC-88A Rudi Subagja; Arief Dwi Rohman; Anistasia Milandia; Soesaptri Oediyani; Iwan Setiawan
Metalurgi Vol 38, No 1 (2023): Metalurgi Vol. 38 No. 1 2023
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (625.14 KB) | DOI: 10.55981/metalurgi.2023.684

Abstract

In present study, a solvent extraction experiment has been done to separate cobalt from the nickel sulfate solution by using 2-ethythexyl phosponic acid mono-2-ethylhexyl ester (PC-88A) as extractant. The experiment was carried out on a laboratory scale by using a separating funnel to extract cobalt from the nickel sulfate solution with PC88A. The mixed solution was shake in separating funnel for a specified period of time, and after the solvent extraction experiment was finished the organic phase PC88 was separated from the nickel sulfate solution by decantation. The nickel and cobalt content in the aqueous nickel sulfate solution were then analyzed using Atomic absorption spectrophotometry (AAS). In this experiment, the variable for  experiments were covering  solution pH from 2 to 6, shaking time from 30 minutes to 120 minutes, shaking speed  from 20 revolutions per minute (rpm) to 80 rpm, and the volumeratio  of aqueous to organic phase  (A:O ratio) was from 1:1  to 1:4. The effects that experimental variables to the cobalt extraction were observed in this experiment. The result of experiment at room temperature, solution pH 5, shaking speed  60 rpm,  shaking time  90 minutes,  A:O ratio  1:4 and  concentration of PC- 88A  40% show  97.21% of cobalt can be extracted by PC-88A from nickel sulfate solution, thererfore it was  necessary to conduct two stage extraction process  to extract 100% of the cobalt from the nickel sulfate solution. 
Co-Authors Arief Dwi Rohman Iwan Setiawan Rudi Subagja Soesaptri Oediyani