skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fate of arsenic during up to 4.5 years of aging of FeIII-AsV coprecipitates at acidic pH: Effect of reaction media (Nitrate vs. Sulfate), Fe/As molar ratio, and pH

Journal Article · · Chemical Engineering Journal
 [1]; ORCiD logo [2]; ORCiD logo [1];  [1];  [3];  [1]
  1. Chinese Academy of Sciences (CAS), Shenyang (China). Key Lab. of Pollution Ecology and Environmental Engineering
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  3. Shantou Univ. (China)

Iron-arsenate (FeIII-AsV) coprecipitate generated in acid mine drainage and hydrometallurgical practices is one of the potential sources of As contamination in the environment. However, the As behavior as well as the transformation process of the FeIII-AsV coprecipitate is still not fully understood under acidic conditions. This work systematically studied the effect of reaction media (sulfate vs. nitrate), Fe/As molar ratios, and acidic pH values on the transformation rates, routes, and products of the FeIII-AsV coprecipitates at different temperatures during up to 4.5 years of aging. X-ray diffraction (XRD), transmission electron spectroscopy (TEM), Raman spectroscopy, and extended X-ray absorption fine structure spectroscopy (EXAFS) results showed that the FeIII-AsV coprecipitates with Fe/As = 2 transformed to scorodite at pH 4 in both sulfate and nitrate media with poorly crystalline ferric arsenate as precursor. In comparison, for the Fe/As = 4 samples, parascorodite and hematite were formed in sulfate and nitrate media, respectively. We note arsenic was released into the liquid phase during the aging process for the samples with Fe/As = 2 and 4. The aqueous As concentrations ([As]aq) in sulfate media were larger than those in nitrate media for both the Fe/As = 2 and 4 samples. In addition, the transformation products were goethite and Na-jarosite at Fe/As = 8 and 16, pH 2.5 with the decrease of [As]aq. The results also indicated that 6-line ferrihydrite was a common intermediate for many Fe-As transformation processes.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences (CAS); Hundred-Talent Program; USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC02-76SF00515; QYZDJ-SSW-DQC038
OSTI ID:
1638152
Alternate ID(s):
OSTI ID: 1702238
Journal Information:
Chemical Engineering Journal, Vol. 388, Issue C; ISSN 1385-8947
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

References (56)

Sulfate Availability Drives Divergent Evolution of Arsenic Speciation during Microbially Mediated Reductive Transformation of Schwertmannite journal February 2013
Vibrational spectroscopy of functional group chemistry and arsenate coordination in ettringite journal November 1998
Mineral formation in an acid pit lake from a high-sulfidation ore deposit: Kirki, NE Greece journal January 2006
Early Stage Formation of Iron Oxyhydroxides during Neutralization of Simulated Acid Mine Drainage Solutions journal July 2012
The behavior of trace elements during schwertmannite precipitation and subsequent transformation into goethite and jarosite journal August 2006
Arsenate partitioning from ferrihydrite to hematite: Spectroscopic evidence journal April 2014
Observation of Surface Precipitation of Arsenate on Ferrihydrite journal April 2006
Raman spectroscopic identification of arsenate minerals in situ at outcrops with handheld (532 nm, 785 nm) instruments journal February 2016
The long-term stability of FeIII-AsV coprecipitates at pH 4 and 7: Mechanisms controlling the arsenic behavior journal July 2019
Phase Transformations In the System Fe–AsO 4 –SO 4 and the Structure Of Amorphous Ferric Arsenate: Implications For Arsenic Stabilization In Mine Drainage and Industrial Effluents journal September 2015
Arsenic release and speciation during the oxidative dissolution of arsenopyrite by O2 in the absence and presence of EDTA journal March 2018
Solubility products of amorphous ferric arsenate and crystalline scorodite (FeAsO4·2H2O) and their application to arsenic behavior in buried mine tailings journal June 2006
Continuous circuit coprecipitation of arsenic(V) with ferric iron by lime neutralization: Process parameter effects on arsenic removal and precipitate quality journal January 2012
The hydrogen positions in scorodite journal October 1976
Coprecipitated arsenate inhibits thermal transformation of 2-line ferrihydrite: Implications for long-term stability of ferrihydrite journal March 2015
Molecular and structural investigation of yukonite (synthetic & natural) and its relation to arseniosiderite journal October 2010
Mineralogy of a natural As-rich hydrous ferric oxide coprecipitate formed by mixing of hydrothermal fluid and seawater: Implications regarding surface complexation and color banding in ferrihydrite deposits journal July 2001
Characterization of Arsenate-For-Sulfate Substitution in Synthetic Jarosite Using X-Ray Diffraction and X-Ray Absorption Spectroscopy journal August 2003
Continuous circuit coprecipitation of arsenic(V) with ferric iron by lime neutralization: The effect of circuit staging, co-ions and equilibration pH on long-term arsenic retention journal January 2015
Arsenic Disposal Practices in the Metallurgical Industry journal January 2001
Structure and spectroscopic study of aqueous Fe(III)-As(V) complexes using UV–Vis, XAS and DFT-TDDFT journal September 2017
Acid mine drainage remediation options: a review journal February 2005
Arsenic Mobilization Is Enhanced by Thermal Transformation of Schwertmannite journal July 2016
Biomineralization of As(V)-hydrous ferric oxyhydroxide in microbial mats of an acid-sulfate-chloride geothermal spring, Yellowstone National Park journal August 2004
Sorption of As(V) on green rust (Fe4(II)Fe2(III)(OH)12SO4 · 3H2O) and lepidocrocite (γ-FeOOH): Surface complexes from EXAFS spectroscopy journal April 2001
Iron and sulfur cycling in acid sulfate soil wetlands under dynamic redox conditions: A review journal April 2018
Negative pH and Extremely Acidic Mine Waters from Iron Mountain, California journal January 2000
Review of arsenic metallurgy: Treatment of arsenical minerals and the immobilization of arsenic journal December 2017
The Transformation of Two-Line Ferrihydrite into Crystalline Products: Effect of pH and Media (Sulfate versus Nitrate) journal March 2018
Application of Raman spectroscopy to identify iron minerals commonly found in mine wastes journal November 2011
Kinetic Synthesis of Nanomaghemite Mediated by Arsenate journal September 2017
Structural characterization of poorly-crystalline scorodite, iron(III)–arsenate co-precipitates and uranium mill neutralized raffinate solids using X-ray absorption fine structure spectroscopy journal June 2009
Transformation of arsenic in offshore sediment under the impact of anaerobic microbial activities journal December 2011
Raman spectra and thermal transformations of ferrihydrite and schwertmannite journal January 2002
Geochemical processes controlling fate and transport of arsenic in acid mine drainage (AMD) and natural systems journal June 2009
Characterization of ferric arsenate-sulfate compounds: Implications for arsenic control in refractory gold processing residues journal March 2013
New Insight into the Local Structure of Hydrous Ferric Arsenate Using Full-Potential Multiple Scattering Analysis, Density Functional Theory Calculations, and Vibrational Spectroscopy journal October 2016
Parascorodite, FeAsO 4 .2H 2 O; a new mineral from Kank near Kutna Hora, Czech Republic journal September 1999
Transformation of 2-line ferrihydrite to 6-line ferrihydrite under oxic and anoxic conditions journal November 2003
Scavenging of As from Acid Mine Drainage by Schwertmannite and Ferrihydrite:  A Comparison with Synthetic Analogues journal April 2002
Coprecipitation of arsenate with iron(III) in aqueous sulfate media: Effect of time, lime as base and co-ions on arsenic retention journal February 2008
Antimony and Arsenic Behavior during Fe(II)-Induced Transformation of Jarosite journal April 2017
Characterization of Poorly-Crystalline Ferric Arsenate Precipitated from Equimolar Fe(III)-As(V) Solutions in the pH Range 2 to 8 journal September 2007
Trapping and mobilisation of arsenic and lead in former mine tailings –Environmental conditions effects journal September 2002
Novel atmospheric scorodite synthesis by oxidation of ferrous sulfate solution. Part I journal February 2008
Scorodite Dissolution Kinetics:  Implications for Arsenic Release journal November 2006
Solubilities and stabilities of ferric arsenate compounds journal August 1989
Experimental and theoretical vibrational spectroscopic evaluation of arsenate coordination in aqueous solutions, solids, and at mineral-water interfaces journal October 1998
Characterization of the iron arsenate–sulphate compounds precipitated at elevated temperatures journal May 2007
Arsenic in contaminated soils and anthropogenic deposits at the Mokrsko, Roudný, and Kašperské Hory gold deposits, Bohemian Massif (CZ) journal December 2003
Effect of Aqueous Fe(II) on Arsenate Sorption on Goethite and Hematite journal October 2011
Speciation and characterization of arsenic in gold ores and cyanidation tailings using X-ray absorption spectroscopy journal March 2004
Structure and reactivity of As(III)- and As(V)-rich schwertmannites and amorphous ferric arsenate sulfate from the Carnoulès acid mine drainage, France: Comparison with biotic and abiotic model compounds and implications for As remediation journal March 2013
The transformation of ferrihydrite into goethite or hematite, revisited journal March 2006
Transmission Electron Microscopy of Synthetic 2- and 6-Line Ferrihydrite journal January 2000
Synthesis and phase transformations involving scorodite, ferric arsenate and arsenical ferrihydrite: Implications for arsenic mobility journal June 2008

Similar Records

The adsorption of As(V) on poorly crystalline Fe oxyhydroxides, revisited: Effect of the reaction media and the drying treatment
Journal Article · Tue Apr 20 00:00:00 EDT 2021 · Journal of Hazardous Materials · OSTI ID:1638152

Role of Fe(II) and phosphate in arsenic uptake by coprecipitation
Journal Article · Tue Jul 08 00:00:00 EDT 2008 · Geochim. Cosmochim. Acta · OSTI ID:1638152

Speciation And Colloid Transport of Arsenic From Mine Tailings
Journal Article · Fri Jul 13 00:00:00 EDT 2007 · Submitted to Appl.Geochem. · OSTI ID:1638152