Nanofiltration of Acid Mine Drainage in an Abandoned Mercury Mining Area

Sierra, Carlos; Saiz, José Ramón; Gallego, José Luis

doi:10.1007/s11270-013-1734-7

Cited by 35 publications

(13 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5][6][7][8][9][10] Irrespective of the type of environment, oxidative dissolution of pyrite in contact with oxygenated surface or sub-surface water releases toxic mercury to downstream ecosystems. [11][12][13] Pyritic mercury may also be released to the atmosphere through coal combustion and sulfide ore roasting and retorting. [14][15][16][17] Despite the widespread occurrence of pyrite in crustal rocks and its importance as the host to Hg, little is known about the mode of incorporation of Hg in FeS2.…”

Section: Introductionmentioning

confidence: 99%

Chemical Forms of Mercury in Pyrite: Implications for Predicting Mercury Releases in Acid Mine Drainage Settings

Manceau

Merkulova

Murdzek

et al. 2018

Environ. Sci. Technol.

View full text Add to dashboard Cite

Pyrite (cubic FeS) is the most abundant metal sulfide in nature and also the main host mineral of toxic mercury (Hg). Release of mercury in acid mine drainage resulting from the oxidative dissolution of pyrite in coal and ore and rock resulting from mining, processing, waste management, reclamation, and large construction activities is an ongoing environmental challenge. The fate of mercury depends on its chemical forms at the point source, which in turn depends on how it occurs in pyrite. Here, we show that pyrite in coal, sedimentary rocks, and hydrothermal ore deposits can host varying structural forms of Hg which can be identified with high energy-resolution XANES (HR-XANES) spectroscopy. Nominally divalent Hg is incorporated at the Fe site in pyrite from coal and at a marcasite-type Fe site in pyrite from sedimentary rocks. Distinction of the two Hg bonding environments offers a mean to detect microscopic marcasite inclusions (orthorhombic FeS) in bulk pyrite. In epigenetic pyrite from Carlin-type Au deposit, up to 55 ± 6 at. % of the total Hg occurs as metacinnabar nanoparticles (β-HgS), with the remainder being substitutional at the Fe site. Pyritic mercury from Idrija-type Hg deposit (α-HgS ore) is partly divalent and substitutional and partly reduced into elemental form (liquid). Divalent mercury ions, mercury sulfide nanoparticles, and elemental mercury released by the oxidation of pyrite in acid mine drainage settings would have different environmental pathways. Our results could find important applications for designing control strategies of mercury released to land and water in mine-impacted watersheds.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemical Forms of Mercury in Pyrite: Implications for Predicting Mercury Releases in Acid Mine Drainage Settings

Manceau

Merkulova

Murdzek

et al. 2018

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Some investigations have been published on wastewater treatment and recovery of heavy metals from the mining effluents by various pressure-driven polymeric UF/NF and RO systems [206][207][208][209][210][211][212][213][214][215][216][217][218][219] , and has shown that polymeric NF and RO have quite similar efficiency in the removal of heavy metals from mining effluent. However, applying polymeric NF due to higher flux, acceptable rejection efficiency and, lower energy consumption was more appropriate than RO at comparatively low-temperatures.…”

Section: Mining Industrymentioning

confidence: 99%

The application of pressure-driven ceramic membrane technology for the treatment of industrial wastewaters – A review

Samaei

Gato-Trinidad

Altaee

2018

Separation and Purification Technology

293

View full text Add to dashboard Cite

This paper presents a review of the previous laboratory analysis and case studies on the application of the pressure-driven ceramic membrane technology for treatment of industrial wastewaters. Ceramic membranes has attracted remarkable interests in recent decades for industrial wastewater treatment because of their superior characteristic such as high fluxes , reliable working lifetime under aggressive operating conditions and ease of cleaning. The literature review revealed that the efficiency of this technology has been proven in a wide variety of wastewaters from different industries and activities including pulp and paper, textile, pharmaceutical, petrochemical, food and mining. However, there are still challenges and questions for this technology that need to be addressed in future researches such as investment cost optimisation by introducing new fabrication technologies, selectivity, permeability and packing densities improvement, fouling minimisation and proposing scale up based on experimental research results.

show abstract

“…Sierra et al 5 studied nanofiltration in the treatment of AMD from an abandoned mercury mine in Spain. The NF270-2540 membrane (Filmtec) was used, allowing the removal of 99% of dissolved solids such as As, Fe, and Al.…”

Section: Introductionmentioning

confidence: 99%

Assessment and Modeling of Nanofiltration of Acid Mine Drainage

Andalaft

Schwarz

Pino

et al. 2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The main objective of the present investigation was to analyze, evaluate, and model the behavior in the treatment of real acid mine drainage (AMD) with commercial spiral-wound nanofiltration membranes (NF270 and NF90). Both membranes showed operational differences regarding the effect of pH, temperature, continuous operation, concentration polarization, and fouling. Both NF90 and NF270 presented a high rejection of divalent ions (∼100%); however, NF90 showed a greater fouling with AMD. Adjustment of pH in the continuous tests reduced the precipitation of aluminum, and gypsum was identified as the main compound generating a significant decrease in the permeate flow in the membrane. The Spliegler−Kedem model was used to represent rejection and permeate flows, identifying the contribution of convective and diffusive transport in both membranes with a good fit of the model. The results obtained represent important information for a future industrial application to the treatment of AMD by means of commercial NF membranes.

show abstract

Nanofiltration of Acid Mine Drainage in an Abandoned Mercury Mining Area

Cited by 35 publications

References 18 publications

Chemical Forms of Mercury in Pyrite: Implications for Predicting Mercury Releases in Acid Mine Drainage Settings

Chemical Forms of Mercury in Pyrite: Implications for Predicting Mercury Releases in Acid Mine Drainage Settings

The application of pressure-driven ceramic membrane technology for the treatment of industrial wastewaters – A review

Assessment and Modeling of Nanofiltration of Acid Mine Drainage

Contact Info

Product

Resources

About