Sustainable solvent extraction of gold and other metals with biomass chemicals
Artikel i vetenskaplig tidskrift, 2024

This paper presents the basis for an industrial gold purification process using an organic phase made from biomass derived organic chemicals is presented. The use of a sustainable kerosene (a biodiesel) as a diluent in a solvent extraction experiment is important as it allows the solvent extraction of metals to be done without petroleum kerosene. A chemical change in the organic phase which reduces the gold distribution ratio has been observed and rationalized with XANES/EXAFS, this change offers path towards more sustainable flowsheets for gold. A second process is also presented using biomass derived diluent, the parameters required to calculate the ratio of the activity functions of chloride and the tetrachloroaurate(iii) complex in choline chloride media are within this paper. Additionally solvent extraction experiments using the new sustainable diluent for lithium and alkaline earth elements together with proof of principle experiments with stable lanthanides, 99mTc, 152Eu, 238Pu and 239Pu were performed.

Författare

Mark Foreman

Chalmers, Kemi och kemiteknik, Energi och material

Gloria Mariotti

Chalmers, Kemi och kemiteknik, Energi och material

I. Persson

Sveriges lantbruksuniversitet (SLU)

Behabitu Ergette Tebikachew

Chalmers, Kemi och kemiteknik, Energi och material

Mikhail S Tyumentsev

Chalmers, Kemi och kemiteknik, Energi och material

Richard K. Johansson

RSC Sustainability

27538125 (eISSN)

Vol. 2 3 655-675

RareGreen. Sustainable processing methods for rare earth elements

EIT RawMaterials (21130), 2022-09-01 -- 2025-08-31.

Europeiska kommissionen (EU) (21130 - RareGreen), 2022-09-01 -- 2025-08-31.

Recovery of Tungsten, Niobium and Tantalum occurring as by-products in mining and processing waste streams (TARANTULA)

Europeiska kommissionen (EU) (EC/H2020/821159), 2019-06-01 -- 2023-05-31.

Ämneskategorier

Analytisk kemi

Kemiska processer

DOI

10.1039/d3su00078h

Mer information

Senast uppdaterat

2024-04-16