Natural attenuation of arsenic in the Tinto Santa Rosa acid stream (Iberian Pyritic Belt, SW Spain): The role of iron precipitates

Asta, María P.; Ayora, Carlos; Román-Ross, Gabriela; Cama, Jordi; Acero, Patricia; Gault, A. G.; Charnock, John; Bardelli, Fabrizio

doi:10.1016/j.chemgeo.2009.12.005

Cited by 114 publications

(66 citation statements)

References 61 publications

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“…Using the mass fl ux method of detection, Kao and Wang ( 2001 ) reported 99 % BTEX degradation by natural attenuation at fi eld-scale. Asta et al ( 2010 ) observed that even very high concentrations (up to 4 mg/L) of As(III) and As(V) acidic discharge of the abandoned Tinto Santa Rosa mine in the Iberian pyritic belt, Spain, could be bioattenuated by sorption using iron oxyhydroxysulphate and iron oxyhydroxide as stream bed precipitates. Serrano et al ( 2008 ) concluded that after a diesel spill in agricultural soil, most of the aliphatic hydrocarbons persist in the subsurface (up to 0.1 m) and volatilization was the main cause for the decline in aliphatic hydrocarbon concentration.…”

Section: Natural Attenuationmentioning

confidence: 98%

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

Kuppusamy

Thavamani

Megharaj

et al. 2016

Reviews of Environmental Contamination and Toxicology

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Though several in-situ treatment methods exist to remediate polluted sites, selecting an appropriate site-specific remediation technology is challenging and is critical for successful clean up of polluted sites. Hence, a comprehensive overview of all the available remediation technologies to date is necessary to choose the right technology for an anticipated pollutant. This review has critically evaluated the (i) technological profile of existing in-situ remediation approaches for priority and emerging pollutants, (ii) recent innovative technologies for on-site pollutant remediation, and (iii) current challenges as well as future prospects for developing innovative approaches to enhance the efficacy of remediation at contaminated sites.

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Section: Natural Attenuationmentioning

confidence: 98%

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

Kuppusamy

Thavamani

Megharaj

et al. 2016

Reviews of Environmental Contamination and Toxicology

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“…Over a hundred mines have operated in the area during the past centuries (Tornos, 2006), which discharge their highly-polluted acidic leachates into the river systems. Nearly all of the mining districts are currently abandoned representing an almost inexhaustible source of AMD, characterized by low pH (0.88-3.2) and high elemental concentrations (Egal et al, 2008;Hubbard et al, 2009;Asta et al, 2010;Nieto et al, 2013). As a consequence, iron terraces precipitate reflecting the mining impact.…”

Section: Site Descriptionmentioning

confidence: 98%

“…In AMD-after mining environments, metastable schwertmannite [Fe 8 O 8 (OH) 5.5 (SO 4 ) 1.25 ] has proven to be good at scavenging arsenic (AsV) from solution (Acero et al, 2006;Asta et al, 2010). However, over time the schwertmannite tends to transform spontaneously into more crystalline phases such as goethite [α-FeOOH] in a matter of months (Acero et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Raman identification of Fe precipitates and evaluation of As fate during phase transformation in Tinto and Odiel River Basins

et al. 2015

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“…(Baker and Banfield 2003). Romero et al (2010) and Asta et al (2010) reported more than 3,500 and 39,900 mg/kg As in mine wastes in Cuba and Spain, respectively. Up to 850 mg/L of As was reported in mine water from Iron Mountain, California (Druschel et al 2004;Nordstrom and Alpers 1999a).…”

Section: Introductionmentioning

confidence: 97%

Arsenic Geochemistry of Acid Mine Drainage

Paikaray

2014

Mine Water Environ

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Due to geochemical similarity between arsenic and sulphur, polymetallic sulphide deposits and pyrite/ arsenopyrite-bearing coal beds often contain exceptionally high concentrations of arsenic. Arsenic release from mine waste occurs after oxidative dissolution of sulphide minerals. Both arsenite and arsenate forms coexist in many mine drainage localities, with the latter oxidation state more common. The rate of arsenite oxidation to arsenate in such environments is mostly controlled by the availability of oxygen and arsenic-oxidizing microbes. Most released arsenic gets naturally attenuated within few meters downstream by adsorption and co-precipitation; amorphous precipitates such as schwertmannite or hydrous ferric oxides are better sinks than crystalline counterparts, such as goethite and jarosite. Because arsenate has a stronger affinity than arsenite for sorbents at acidic pH, arsenatedominated mine water often contains lower levels of arsenic than arsenite-dominated mine water. Secondary mineral precipitation is largely controlled by distribution of acid-neutralizing minerals, such as carbonates and aluminosilicates. In addition to natural attenuation, active and passive treatment of mine water can lower arsenic levels to meet legal limits.

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Natural attenuation of arsenic in the Tinto Santa Rosa acid stream (Iberian Pyritic Belt, SW Spain): The role of iron precipitates

Cited by 114 publications

References 61 publications

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

Raman identification of Fe precipitates and evaluation of As fate during phase transformation in Tinto and Odiel River Basins

Arsenic Geochemistry of Acid Mine Drainage

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