Format

Send to

Choose Destination
See comment in PubMed Commons below
J Environ Sci (China). 2014 Jul;26(7):1549-56. doi: 10.1016/j.jes.2014.05.022. Epub 2014 Jun 16.

Antimony smelting process generating solid wastes and dust: characterization and leaching behaviors.

Author information

  • 1State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: guoxj@bnu.edu.cn.
  • 2State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
  • 3State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: hemc@bnu.edu.cn.

Abstract

A large amount of solid waste has been produced by the antimony smelting process in the "World Capital of Antimony", Xikuangshan area in China. This study comprehensively investigated the physical and chemical characteristics of the various solid wastes, as well as the leaching behavior of the solid wastes, which included water-quenched slag, arsenic-alkali residue, desulfurized slag and blast furnace dust. These four types of waste were enriched in a variety of heavy metals and metalloids and more specifically with As and Sb levels up to 8.6 × 10⁴ and 3.16×10⁵ mg/kg, respectively, in arsenic-alkali residue. For desulfurized slag and water-quenched slag, the leaching concentration of Sb significantly exceeded the acceptable limits during the leaching tests using the toxicity characteristic leaching procedure and the synthetic precipitation leaching procedure. In addition, As leaching in arsenic-alkali residue was extraordinarily hazardous, being three orders of magnitude higher than the regulatory level of As. According to the results of the extraction tests, all the tested wastes were classified as hazardous waste.

Copyright © 2014. Published by Elsevier B.V.

KEYWORDS:

Antimony smelter slag; Arsenic; BCR sequential extraction; SPLP; TCLP

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk