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Recent Innovations in Chemical Engineering

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ISSN (Print): 2405-5204
ISSN (Online): 2405-5212

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Research Article

Synergistic Extraction of Gold by Di-(2-ethylhexyl)phosphoric Acid - Isodecanol

Author(s): Mohd Jumain Jalil*, Nurul Afwanisa, Intan Suhada and Noor Hidayu Abdul Rani

Volume 12, Issue 1, 2019

Page: [54 - 60] Pages: 7

DOI: 10.2174/2405520412666190214152701

Price: $65

Abstract

Objective and Background: Synergistic extraction was introduced to replace single extraction due to enhanced extraction efficiency of heavy metal.

Methodology: In order to improve extraction efficiency, di-(2-ethylhexyl) phosphoric acid (D2EHPA) was mixed with isodecanol to provide a synergistic effect together with leaching solution which is thiourea. From the single extraction system, the optimum temperature is found at 30°C producing the highest yield of %E of 91.30%. The single extraction also happened better with the presence of Fe(III) solution and thiourea as the %E is at 91.23%.

Results and Conclusion: It was found that the synergistic D2EHPA-isodecanol extraction is successful as it yields higher %E than the single D2EHPA extraction.

Keywords: Synergistic extraction, D2EHPA, isodecanol, Au(III), temperature, phosphoric acid.

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