ScholarLens Back to search
2005•Shigen-to-SozaiOpen access

Effect of Jarosite on the Removal of Arsenic ions in Sulfuric Acid Solution

Yuichi Tomioka, Naoki Hiroyoshi, Yasumasa Kubo, Masami TSUNEKAWA

Open full text 9 citations

Abstract

Jarosite (KFe3(SO4)2(OH)6) is a secondary mineral in acidic polluted environments such as mine tailing dump, but few investigations have evaluated arsenic removal by jarosite.This study investigated the role of jarosite in arsenic removal using flask shaking experiments in diluted sulfuric acid solutions (pH1-3). Jarosite was synthesized and the chemical composition of the jarosite was K0.54(H3O)0.46Fe2.38(SO4)2(OH)6. The shaking experiments found that As(V) was removed by the jarosite but As(III) was not removed. The mechanisms of As(V) removal were adsorption on the jarosite and co-precipitation with Fe(III) extracted from jarosite. The removal of As(V) from the liquid phase were increased with increasing pH, indicating that the adsorption of As(V) and SO42- is competitive or that ionic As species (H2AsO4-) is selectively adsorbed. The results suggest that jarosite is a sink for As(V) in acidic polluted environments.

Open-access reader

About this research paper

What this paper is about

Jarosite (KFe3(SO4)2(OH)6) is a secondary mineral in acidic polluted environments such as mine tailing dump, but few investigations have evaluated arsenic removal by jarosite.This study investigated the role of jarosite in arsenic removal using flask shaking experiments in diluted sulfuric acid solutions (pH1-3). Jarosite was synthesized and the chemical composition of the jarosite was K0.54(H3O)0.46Fe2.38(SO4)2(OH)6. The shaking experiments found that As(V) was removed by the jarosite but As(III) was not removed. The mechanisms of As(V) removal were adsorption on the jarosite and co-precipitation with Fe(III) extracted from jarosite. The removal of As(V) from the liquid phase were increased with increasing pH, indicating that the adsorption of As(V) and SO42- is competitive or that ionic As species (H2AsO4-) is selectively adsorbed. The results suggest that jarosite is a sink for As(V) in acidic polluted environments.

Why it matters

OpenAlex reports 9 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Jarosite (KFe3(SO4)2(OH)6) is a secondary mineral in acidic polluted environments such as mine tailing dump, but few investigations have evaluated arsenic removal by jarosite.This study investigated the role of jarosite in arsenic removal using flask shaking experiments in diluted sulfuric acid solutions (pH1-3). Jarosite was synthesized and the chemical composition of the jarosite was K0.54(H3O)0.46Fe2.38(SO4)2(OH)6. The shaking experiments found that As(V) was removed by the jarosite but As(III) was not removed. The mechanisms of As(V) removal were adsorption on the jarosite and co-precipitation with Fe(III) extracted from jarosite. The removal of As(V) from the liquid phase were increased with increasing pH, indicating that the adsorption of As(V) and SO42- is competitive or that ionic As species (H2AsO4-) is selectively adsorbed. The results suggest that jarosite is a sink for As(V) in acidic polluted environments.

Key concepts: Jarosite, Sulfuric acid, Chemistry, Arsenic, Sulfate, Adsorption, Inorganic chemistry, Precipitation

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Effect of Jarosite on the Removal of Arsenic ions in Sulfuric Acid Solution — Research Paper | ScholarLens