DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Process development for recovering critical elements from acid mine drainage

Journal Article · · Resources, Conservation and Recycling
 [1];  [2]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); OSTI
  2. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

The rapid development of advanced technologies has increased the demand for critical elements, such as Mn, Co, and Ni. For this work, a systematic study was conducted to develop a process for producing high-purity Mn, Co, and Ni products from an acid mine drainage (AMD). As major contaminants, Fe and Al in the solution were sequentially precipitated and eliminated by elevating the pH to around 4.00 and 6.50, respectively. After that, a pre-concentrated slurry containing 3,794 mg/L Mn, 59 mg/L Co, 127 mg/L Ni, and 300 mg/L Zn was obtained by collecting the precipitates formed in the pH range of 6.50 to 10.00. The pH of the pre-concentrated slurry was decreased to around 5.00 by adding HCl to re-dissolve Co, Ni, and Zn for further purification. At this pH, greater than 50% of Mn remained undissolved, and filtration of the undissolved material resulted in a product with around 30 wt.% Mn. Sodium sulfide was added into the re-dissolved solution to selectively precipitate Co, Ni, and Zn while remaining Mn in the solution. Almost 100% of Co, Ni, and Zn but only around 15% of Mn were precipitated using a sulfur to metal molar ratio of 1 at pH 4.00. The sulfide precipitate was calcined at 200 °C for 2 h and then completely dissolved in 1.2 M HCl. The critical elements existing in the dissolved solution were efficiently separated using a two-stage solvent extraction process. Ultimately, Co and Ni products with almost 94% and 100% purity were obtained by sulfide and alkaline precipitation, respectively.

Research Organization:
Univ. of Kentucky, Lexington, KY (United States); University of Kentucky, Lexington, KY (United States)
Sponsoring Organization:
USDOE; USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0031827
OSTI ID:
1977606
Journal Information:
Resources, Conservation and Recycling, Journal Name: Resources, Conservation and Recycling Journal Issue: C Vol. 180; ISSN 0921-3449
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (40)

Factors Affecting Metal Removal in Mixed Sulfide Precipitation journal February 2006
Selective recovery of dissolved Fe, Al, Cu, and Zn in acid mine drainage based on modeling to predict precipitation pH journal September 2014
Separation of Ni and Co by D2EHPA in the Presence of Citrate Ion journal June 2017
Selective Separation of Similar Metals in Chloride Solution by Sulfide Precipitation Under Controlled Potential journal August 2017
Purification of synthetic laterite leach solution by solvent extraction using D2EHPA journal July 2000
Separation and recovery of cobalt(II) and nickel(II) from sulphate solutions using sodium salts of D2EHPA, PC 88A and Cyanex 272 journal June 1998
Recovery of Fe, Al and Mn in acid coal mine drainage by sequential selective precipitation with control of pH journal January 2017
Precipitation of rare earth elements from acid mine drainage by CO2 mineralization process journal November 2020
Rare earth elements recovery using staged precipitation from a leachate generated from coarse coal refuse journal July 2018
Selective Recovery of Dissolved Metals from Mine Drainage Using Electrochemical Reactions journal November 2015
Copper removal from acid mine drainage-polluted water using glutaraldehyde-polyethyleneimine modified diatomaceous earth particles journal February 2018
Synergistic effect of Cyanex 272 and Cyanex 302 on separation of cobalt and nickel by D2EHPA journal June 2005
Solvent extraction of aluminium in the presence of cobalt, nickel and magnesium from sulphate solutions by Cyanex 272 journal November 2005
An exploration into the sulphide precipitation method and its effect on metal sulphide removal journal March 2006
Review of metal sulphide precipitation journal September 2010
Pollution control and metal resource recovery for acid mine drainage journal August 2014
Acid Mine Drainage (AMD): causes, treatment and case studies journal January 2006
Selective precipitation of Cu from Zn in a pS controlled continuously stirred tank reactor journal June 2009
Separate recovery of copper and zinc from acid mine drainage using biogenic sulfide journal November 2009
Conception of an integrated flowsheet for rare earth elements recovery from coal coarse refuse journal June 2018
Nickel sulphide concentrate processing via low-temperature calcination with sodium chloride. Part 1 – Identification of interaction products journal April 2019
Process development for the recovery of rare earth elements and critical metals from an acid mine leachate journal July 2020
Adsorption of heavy metals from acid mine drainage by natural zeolite journal July 2009
Control of hematite nanoparticle size and shape by the chemical precipitation method journal November 2013
Field application of selective precipitation for recovering Cu and Zn in drainage discharged from an operating mine journal July 2016
Recovery of zinc sulphate from industrial effluents by liquid–liquid extraction using D2EHPA (di-2-ethylhexyl phosphoric acid) journal February 2007
Zn–Ni sulfide selective precipitation: The role of supersaturation journal July 2010
A novel bioelectrochemical system for chemical-free permanent treatment of acid mine drainage journal December 2017
Recovery of Rare Earth Elements and Yttrium from Passive-Remediation Systems of Acid Mine Drainage journal July 2016
Determination of Metal (Bi)Sulfide Stability Constants of Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , and Zn 2+ by Voltammetric Methods journal January 1996
Trace Metal Adsorption onto an Acid Mine Drainage Iron(III) Oxy Hydroxy Sulfate journal May 1998
Controlled Nickel Sulfide Precipitation Using Gaseous Hydrogen Sulfide journal March 2008
Selective Sulphide Precipitation of Heavy Metals from Acidic Polymetallic Aqueous Solution by Thioacetamide journal June 2011
Effects of structural changes of new organophosphorus cationic exchangers on a solvent extraction of cobalt, nickel and manganese from acidic chloride media journal January 2017
Metals Precipitation from Effluents: Review journal July 2008
Cobalt, copper, and manganese adsorption by aluminium and iron oxides and humic acid journal December 1994
Process for the Recovery of Cobalt and Nickel from Sulphate Leach Liquors with Saponified Cyanex 272 and D2EHPA journal June 2007
Synergistic Effect of D2EHPA and Cyanex 272 on Separation of Zinc and Manganese by Solvent Extraction journal October 2011
Solvent Extraction Separation of Co, Mn and Zn from Ni-rich Leaching Solution by Na-PC88A journal January 2002
Cobalt Deposits in the United States dataset January 2018