Recovery of Gallium From Coal Fly Ash By a Dual Reactive Extraction Process-Reference-Cited by-同舟云学术

Recovery of Gallium From Coal Fly Ash By a Dual Reactive Extraction Process

Published:1997-08 Issue:4 Volume:15 Page:371-382
ISSN:0734-242X
Container-title:Waste Management & Research: The Journal for a Sustainable Circular Economy
language:en
Short-container-title:Waste Manag Res

Author:

Gutiérrez Beatriz¹,Pazos Carmen¹,Coca José¹

Affiliation:

1. Department of Chemical Engineering and Environmental Technology, University of Oviedo, 33071 Oviedo, Spain

Abstract

The extraction of gallium from coal fly ash by leaching and extraction with commercial extractants Amberlite LA-2 and LIX 54N dissolved in kerosene was studied. Leaching of gallium and other metals from the fly ash was carried out with 6 M hydrochloric acid. The leaching liquor is first contacted with Amberlite LA-2 which extracts the gallium and iron. The iron is then precipitated with sodium hydroxide, while gallium remains in solution. Gallium is extracted selectively from the base solution with LIX 54; the resulting stripped solution contains 83% of the gallium present in the leaching liquor. A flow diagram for this dual-extraction process is proposed. © 1997 ISWA

Publisher

SAGE Publications

Subject

Pollution,Environmental Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/0734242X9701500405

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