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Zhang J, Chu X, Fu H, Zhang Q, Zong S. Investigating the Acid Erosion Characteristics of Carbonate Rocks under Hydrodynamic Action. ACS OMEGA 2024; 9:18922-18931. [PMID: 38708240 PMCID: PMC11064002 DOI: 10.1021/acsomega.3c08557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 05/07/2024]
Abstract
In carbonate areas, the unique dissolution features bring a lot of resistance to engineering constructions. The acidic filtrate will definitely cause accelerated dissolution of the surrounding rocks, and the mechanism of accelerated dissolution of such rocks in acid is not clear. In order to explore the dissolution pattern of carbonate rocks after the alteration of their primary environments, a self-made rotating reaction device was used to conduct laboratory dissolution experiments on carbonate cores under three conditions. The mass loss, the change of pH, the molar concentration of Ca2+ and Mg2+, and the morphological changes before and after acid erosion were obtained. The results of correlation analysis show that the dissolution characteristics of carbonate are significantly related to dissolution time, composition of rocks, liquid flow rate, and acid concentration. Segmented characteristics were recorded between CaO/MgO and the reaction sequence (m). When 2 < CaO/MgO < 30, the increase of CaO/MgO has a significant contribution to the chemical dissolution rate; however, when 30 < CaO/MgO < 66, the increase of CaO/MgO does not contribute significantly to the chemical dissolution rate. The dissolution rate is positively correlated with the liquid flow rate. Also, liquid flow rate changes affect dolomite more than they do limestone. The mass loss rate (Rc) order of the rocks of the five carbonate formations was Maocaopu > Qingyan > Falang > Anshun > Dengying. Differences in dissolution induced by the acidic fluids in different formations will eventually form complex dissolution channels.
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Affiliation(s)
- Jiaxin Zhang
- College of Resources and
Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Xuewei Chu
- College of Resources and
Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Hai Fu
- College of Resources and
Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Qilin Zhang
- College of Resources and
Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Shaokang Zong
- College of Resources and
Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
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Carrillo-González R, González-Chávez MCA, Cazares GO, Luna JL. Trace element adsorption from acid mine drainage and mine residues on nanometric hydroxyapatite. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:280. [PMID: 35292869 DOI: 10.1007/s10661-022-09887-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Mining Ag, Cu, Pb, and Zn sulfides by flotation produces great volume of residues, which oxidized through time and release acid solutions. Leachates from tailing heaps are a concern due to the risk of surface water pollution. Hydroxyapatite nanoparticles may remove trace elements from acid leachate collected from an oxidized tailing heap (pH ranged 1.69 ± 0.3 to 2.23 ± 0.16; [SO42-] = 58 ± 0.67 to 60.69 ± 0.39 mmol). Based on the batch experiments under standard conditions, the average removal efficiency was 96%, 92%, 86%, and 67% for Cd, Pb, Zn, and Cu, respectively. The Zn adsorption was modeled by the Freundlich equation, but Cd, Cu, and Pb isotherms do not fit to Freundlich nor Lagmuir equations. Adsorption and other mechanisms occur during trace elements removal by hydroxyapatite. In the polymetallic system, trace elements saturate the specific surface of hydroxyapatite in the following order Zn, Cd, Cu, and Pb. The pH values must be higher than 7.5 to adsorb trace elements. The dose of 3.8% of hydroxyapatite to acid mine drainage removed efficiently > 80% of the soluble Fe, Cu, Mn, Zn, Cd, Ni, and Pb: 4020.0, 37.3, 34.8, 432.0, 4.4, 0.7, and 0.11 mg L-1 from leachate A and 3357.1, 46.6, 27.8, 569.0, 4.7, 0.6, and 1.7 from leachate B, respectively. The application of 0.7% of hydroxyapatite decreased the extractable Pb in unoxidized tailing heaps from 272 to 100 mg kg-1. It is likely to use hydroxyapatite to control trace element mobility from mine residues to surrounding soils and surface water.
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Affiliation(s)
- Rogelio Carrillo-González
- Programa de Edafología, Colegio de Postgraduados, Carretera México-Texcoco km 36.5, 56106, Texcoco, Mexico.
| | - M C A González-Chávez
- Programa de Edafología, Colegio de Postgraduados, Carretera México-Texcoco km 36.5, 56106, Texcoco, Mexico
| | - G Ortiz Cazares
- Programa de Edafología, Colegio de Postgraduados, Carretera México-Texcoco km 36.5, 56106, Texcoco, Mexico
| | - J López Luna
- Instituto de Estudios Ambientales, Universidad de La Sierra Juárez, 68725, Ixtlán de Juárez, Oaxaca, Mexico
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Lizama-Allende K, Ayala J, Jaque I, Echeverría P. The removal of arsenic and metals from highly acidic water in horizontal subsurface flow constructed wetlands with alternative supporting media. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124832. [PMID: 33421850 DOI: 10.1016/j.jhazmat.2020.124832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/06/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
A laboratory-scale horizontal subsurface flow constructed wetland system was used to quantify the arsenic removal capacity in the treatment of highly acidic, arsenic and metal-rich water: pH ≈ 2, Fe ≈ 57 mg/L, Pb ≈ 0.9 mg/L, Zn ≈ 12 mg/L. The system was operated in two stages, being As ≈ 2.1 mg/L in stage one, and ≈ 3.7 mg/L in stage 2. Limestone and zeolite were employed as main supporting media to build non-vegetated and vegetated cells with Phragmites australis. The system was very effective in the removal of arsenic and iron (> 96%), and lead (> 94%) throughout the whole experimental period, having the four treatment types a similar performance. The main effect of the media type was on the pH adjustment capacity: limestone cells were able to raise the pH to ≈ 7.1, whereas zeolite cells raised it to ≈ 3.8. The contribution of plant uptake to the overall removal of As, Fe and Zn was minor; accounting for less than 0.02%, 0.07% and 0.7% respectively. As such, pollutants were mainly retained in the wetland beds. Our results suggest that limestone is recommended over zeolite as wetland medium mainly due to its neutralization capacity.
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Affiliation(s)
- Katherine Lizama-Allende
- Departamento de Ingeniería Civil, Universidad de Chile, Av. Blanco Encalada 2002, Santiago 8370449, Chile.
| | - José Ayala
- Departamento de Ingeniería Civil, Universidad de Chile, Av. Blanco Encalada 2002, Santiago 8370449, Chile.
| | - Ignacio Jaque
- Departamento de Ingeniería Civil, Universidad de Chile, Av. Blanco Encalada 2002, Santiago 8370449, Chile.
| | - Pablo Echeverría
- Departamento de Ingeniería Civil, Universidad de Chile, Av. Blanco Encalada 2002, Santiago 8370449, Chile.
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Labastida I, Armienta MA, Lara RH, Briones R, González I, Romero F. Kinetic approach for the appropriate selection of indigenous limestones for acid mine drainage treatment with passive systems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 677:404-417. [PMID: 31059883 DOI: 10.1016/j.scitotenv.2019.04.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 06/09/2023]
Abstract
Acid mine drainage treatments using limestones have been widely reported in the literature; however, additional studies are needed to select the most effective limestone type based on an adequate characterization and in consideration of the kinetics of the rock's reaction upon exposure to high iron concentrations. In this study, with the aim to select the most appropriate limestone to use in a passive treatment system, the regular characterization (calcium carbonate analysis, determination of specific superficial area, and porosity) was complemented with a heterogeneous kinetic analysis of limestone dissolution. The physico-chemical conditions of high acidity and a high Fe concentration were similar to those measured in leachates from the "Compañía Minera Zimapán" (CMZ) tailings impoundment located in a historical Mexican mining zone. Column experiments were carried out with the selected limestone to treat leachates from two tailing deposits; one highly weathered and un-active (CMZ) and the other still active (San Miguel Nuevo). Removal efficiencies close to 100% were reached for arsenic, iron, cadmium, and aluminum. There was also a partial removal of zinc and silica, and the pH increased close to neutrality. Electrical conductivity, sulfate levels, and oxidation reduction potential were also measured during the experiments. Concentration profiles for some elements were established. Chemical results, stoichiometric relationships between elements obtained by scanning electron microscopy-energy dispersive spectroscopy, and scanning electron microscopy-wavelength dispersive spectroscopy allowed for determining the chemical associations of the elements at the surface. The results indicated that the methodology for limestone selection to treat AMD from San Miguel Nuevo tailings was adequate; however, additional studies are required to improve the permeability and the lifetime of the system used to treat CMZ leachates.
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Affiliation(s)
- Israel Labastida
- Universidad Autónoma Metropolitana, Unidad Azcapotzalco, Departamento de Energía, Av. San Pablo 180, 02200 Ciudad de Mexico, Mexico; Universidad Nacional Autónoma de México, Posgrado en Ciencias de la Tierra, UNAM, 04510 Ciudad de México, Mexico
| | - M Aurora Armienta
- Universidad Nacional Autónoma de México, Instituto de Geofísica, UNAM, 04510 Ciudad de Mexico, Mexico.
| | - René H Lara
- Departamento de Ciencia de Materiales, Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Av. Veterinaria S/N, Circuito Universitario, 34120 Durango, Dgo, Mexico
| | - Roberto Briones
- Facultad de Ingeniería, Instituto de Metalurgia, Universidad Autónoma de San Luis Potosí, Sierra Leona 550, Lomas 2ª sección, C.P. 78210, San Luis Potosí, S.L.P., Mexico
| | - Ignacio González
- Universidad Autónoma Metropolitana, Unidad Iztapalapa, Departamento de Química, Av. San Rafael Atlixco No. 186, Col. Vicentina C.P., 09340, Iztapalapa, Ciudad de Mexico, Mexico
| | - Francisco Romero
- Universidad Nacional Autónoma de México, Instituto de Geología, UNAM, 04510 Ciudad de Mexico, Mexico
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Berberich J, Li T, Sahle-Demessie E. Biosensors for Monitoring Water Pollutants: A Case Study With Arsenic in Groundwater. SEP SCI TECHNOL 2019. [DOI: 10.1016/b978-0-12-815730-5.00011-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Chai L, Li Q, Wang Q, Yan X. Solid-liquid separation: an emerging issue in heavy metal wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:17250-17267. [PMID: 29766423 DOI: 10.1007/s11356-018-2135-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 04/25/2018] [Indexed: 06/08/2023]
Abstract
Solid-liquid separation (SLS) plays a dominant role in various chemical industries. Nowadays, low efficiency of SLS also become a significant problem in heavy metal (HM) wastewater treatment, affecting the effluent quality (HM concentration and turbidity) and overall process economy. In this context, we summarize here the occurrence of solids in HM wastewater, as well as typical SLS operations used in HM wastewater treatment, including sedimentation, flotation, and centrifugation. More important, this article reviews the improvement of the SLS operations by some technologies, including coagulation, flocculation, ballasted method, seeding method, granular sludge strategy, and external field enhancement. It is noted that abiological granular sludge strategy and magnetic field enhancement often possess higher SLS efficiency (faster settling velocity or shorter separation time) than other methods. Hence, the two strategies stand out as promising tools for improving SLS in HM wastewater treatment, but further research is required regarding scalability, economy, and reliability.
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Affiliation(s)
- Liyuan Chai
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China
| | - Qingzhu Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China
| | - Qingwei Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China
| | - Xu Yan
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China.
- National Engineering Research Center for Heavy Metals Pollution Control and Treatment, Changsha, China.
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Shabalala AN, Ekolu SO, Diop S, Solomon F. Pervious concrete reactive barrier for removal of heavy metals from acid mine drainage - column study. JOURNAL OF HAZARDOUS MATERIALS 2017; 323:641-653. [PMID: 28340907 DOI: 10.1016/j.jhazmat.2016.10.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 10/09/2016] [Accepted: 10/13/2016] [Indexed: 06/06/2023]
Abstract
This paper presents a column study conducted to investigate the potential use of pervious concrete as a reactive barrier for treatment of water impacted by mine waste. The study was done using acid mine drainage (AMD) collected from a gold mine (WZ) and a coalfield (TDB). Pervious concrete mixtures consisting of Portland cement CEM I 52.5R with or without 30% fly ash (FA) were prepared at a water-cementitious ratio of 0.27 then used to make cubes which were employed in the reactor columns. It was found that the removal efficiency levels of Al, Fe, Mn, Co and Ni were 75%, 98%, 99%, 94% and 95% for WZ; 87%, 96%, 99%, 98% and 90% for TDB, respectively. The high rate of acid reduction and metal removal by pervious concrete is attributed to dissolution of portlandite which is a typical constituent of concrete. The dominant reaction product in all four columns was gypsum, which also contributed to some removal of sulphate from AMD. Formation of gypsum, goethite, and Glauber's salt were identified. Precipitation of metal hydroxides seems to be the dominant metal removal mechanism. Use of pervious concrete offers a promising alternative treatment method for polluted or acidic mine water.
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Affiliation(s)
- Ayanda N Shabalala
- University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa.
| | - Stephen O Ekolu
- University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
| | - Souleymane Diop
- Council for Geoscience, Private bag x112, Pretoria, 0001, South Africa
| | - Fitsum Solomon
- University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
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8
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Influence of Temperature on the Formation of Ag Complexed in a S2O32−–O2 System. MINERALS 2017. [DOI: 10.3390/min7020016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Gong B, Wu P, Huang Z, Li Y, Yang S, Dang Z, Ruan B, Kang C. Efficient inhibition of heavy metal release from mine tailings against acid rain exposure by triethylenetetramine intercalated montmorillonite (TETA-Mt). JOURNAL OF HAZARDOUS MATERIALS 2016; 318:396-406. [PMID: 27450331 DOI: 10.1016/j.jhazmat.2016.07.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/22/2016] [Accepted: 07/05/2016] [Indexed: 06/06/2023]
Abstract
The potential application of triethylenetetramine intercalated montmorillonite (TETA-Mt) in mine tailings treatment and AMD (acid mine drainage) remediation was investigated with batch experiments. The structural and morphological characteristics of TETA-Mt were analyzed with XRD, FTIR, DTG-TG and SEM. The inhibition efficiencies of TETA-Mt against heavy metal release from mine tailings when exposed to acid rain leaching was examined and compared with that of triethylenetetramine (TETA) and Mt. Results showed that the overall inhibition by TETA-Mt surpassed that by TETA or Mt for various heavy metal ions over an acid rain pH range of 3-5.6 and a temperature range of 25-40°C. When mine tailings were exposed to acid rain of pH 4.8 (the average rain pH of the mining site where the mine tailings were from), TETA-Mt achieved an inhibition efficiency of over 90% for Cu(2+), Zn(2+), Cd(2+) and Mn(2+) release, and 70% for Pb(2+) at 25°C. It was shown that TETA-Mt has a strong buffering capacity. Moreover, TETA-Mt was able to adsorb heavy metal ions and the adsorption process was fast, suggesting that coordination was mainly responsible. These results showed the potential of TETA-Mt in AMD mitigation, especially in acid rain affected mining area.
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Affiliation(s)
- Beini Gong
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; Guangdong Key Laboratory of Agro-Environmental Integrated Control, Guangdong Institute of Eco-Environmental Science & Technology, Guangzhou 510006, PR China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Engineering and Technology Research Centre for Environment Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; Guangdong Environmental Protection Key Lab of Solid Waste Treatment and Recycling, Guangzhou 510006, PR China.
| | - Zhujian Huang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Yuanyuan Li
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Shanshan Yang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510006, PR China
| | - Bo Ruan
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Chunxi Kang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
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da Costa JP, Girão AV, Trindade T, Costa MC, Duarte A, Rocha-Santos T. Biological synthesis of nanosized sulfide semiconductors: current status and future prospects. Appl Microbiol Biotechnol 2016; 100:8283-302. [PMID: 27550218 DOI: 10.1007/s00253-016-7756-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 07/24/2016] [Accepted: 07/27/2016] [Indexed: 12/26/2022]
Abstract
There have been extensive and comprehensive reviews in the field of metal sulfide precipitation in the context of environmental remediation. However, these works have focused mainly on the removal of metals from aqueous solutions-usually, metal-contaminated effluents-with less emphasis on the precipitation process and on the end-products, frequently centering on metal removal efficiencies. Recently, there has been an increasing interest not only in the possible beneficial effects of these bioremediation strategies for metal-rich effluents but also on the formed precipitates. These metal sulfide materials are of special relevance in industry, due to their optical, electronic, and mechanical properties. Hence, identifying new routes for synthesizing these materials, as well as developing methodologies allowing for the control of the shape and size of particulates, is of environmental, economic, and practical importance. Multiple studies have shown proof-of-concept for the biological synthesis of inorganic metallic sulfide nanoparticles (NPs), resorting to varied organisms or cell components, though this information has scarcely been structured and compiled in a systematic manner. In this review, we overview the biological synthesis methodologies of nanosized metal sulfides and the advantages of these strategies when compared to more conventional chemical routes. Furthermore, we highlight the possibility of the use of numerous organisms for the synthesis of different metal sulfide NPs, with emphasis on sulfate-reducing bacteria (SRB). Finally, we put in perspective the potential of these methodologies in the emerging research areas of biohydrometallurgy and nanobiotechnology for the uptake of metals in the form of metal sulfide nanoparticles. A more complete understanding of the principles underlying the (bio)chemistry of formation of solids in these conditions may lead to the large-scale production of such metal sulfides, while simultaneously allowing an enhanced control over the size and shape of these biogenic nanomaterials.
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Affiliation(s)
- João Pinto da Costa
- Department of Chemistry-CESAM, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Ana Violeta Girão
- Department of Chemistry-CICECO, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Tito Trindade
- Department of Chemistry-CICECO, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Maria Clara Costa
- CCMAR, University of the Algarve, Campus Gambelas, 8005-139, Faro, Portugal
| | - Armando Duarte
- Department of Chemistry-CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Teresa Rocha-Santos
- Department of Chemistry-CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
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Lara RH, Velázquez LJ, Vazquez-Arenas J, Mallet M, Dossot M, Labastida I, Sosa-Rodríguez FS, Espinosa-Cristóbal LF, Escobedo-Bretado MA, Cruz R. Arsenopyrite weathering under conditions of simulated calcareous soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:3681-3706. [PMID: 26498805 DOI: 10.1007/s11356-015-5560-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 10/05/2015] [Indexed: 06/05/2023]
Abstract
Mining activities release arsenopyrite into calcareous soils where it undergoes weathering generating toxic compounds. The research evaluates the environmental impacts of these processes under semi-alkaline carbonated conditions. Electrochemical (cyclic voltammetry, chronoamperometry, EIS), spectroscopic (Raman, XPS), and microscopic (SEM, AFM, TEM) techniques are combined along with chemical analyses of leachates collected from simulated arsenopyrite weathering to comprehensively examine the interfacial mechanisms. Early oxidation stages enhance mineral reactivity through the formation of surface sulfur phases (e.g., S n (2-)/S(0)) with semiconductor properties, leading to oscillatory mineral reactivity. Subsequent steps entail the generation of intermediate siderite (FeCO3)-like, followed by the formation of low-compact mass sub-micro ferric oxyhydroxides (α, γ-FeOOH) with adsorbed arsenic (mainly As(III), and lower amounts of As(V)). In addition, weathering reactions can be influenced by accessible arsenic resulting in the formation of a symplesite (Fe3(AsO4)3)-like compound which is dependent on the amount of accessible arsenic in the system. It is proposed that arsenic release occurs via diffusion across secondary α, γ-FeOOH structures during arsenopyrite weathering. We suggest weathering mechanisms of arsenopyrite in calcareous soil and environmental implications based on experimental data.
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Affiliation(s)
- René H Lara
- Facultad de Ciencias Químicas, Departamento de Ciencia de Materiales, Universidad Juárez del Estado de Durango (UJED), Av. Veterinaria S/N, Circuito Universitario, Col. Valle del Sur, 34120, Durango, Mexico.
| | - Leticia J Velázquez
- Facultad de Ciencias Químicas, Departamento de Ciencia de Materiales, Universidad Juárez del Estado de Durango (UJED), Av. Veterinaria S/N, Circuito Universitario, Col. Valle del Sur, 34120, Durango, Mexico
| | - Jorge Vazquez-Arenas
- Departamento de Química, Universidad Autónoma Metropolitana, Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, México, DF, 09340, Mexico
| | - Martine Mallet
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564 CNRS-Université de Lorraine, 405 rue de Vandœuvre, F-54600, Villers-lès-Nancy, France
| | - Manuel Dossot
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564 CNRS-Université de Lorraine, 405 rue de Vandœuvre, F-54600, Villers-lès-Nancy, France
| | - Israel Labastida
- Departamento de Energía, Universidad Autónoma Metropolitana, Azcapotzalco, Av. San Pablo 180, Azcapotzalco, México, DF, 02200, Mexico
| | - Fabiola S Sosa-Rodríguez
- Crecimiento Económico y Medio Ambiente, Departamento Economía, Universidad Autónoma Metropolitana, Azcapotzalco, Av. San Pablo 180, Azcapotzalco, México, DF, 02200, Mexico
| | - León F Espinosa-Cristóbal
- Universidad Autónoma de Ciudad Juárez, ICB, Av. Benjamín Franklin 4650, Zona PRONAF, 32315, Cd. Juárez, Chihuahua, Mexico
| | - Miguel A Escobedo-Bretado
- Facultad de Ciencias Químicas, Departamento de Ciencia de Materiales, Universidad Juárez del Estado de Durango (UJED), Av. Veterinaria S/N, Circuito Universitario, Col. Valle del Sur, 34120, Durango, Mexico
| | - Roel Cruz
- Instituto de Metalurgia, Facultad de Ingeniería, UASLP, Av. Sierra Leona 550, Lomas 2a. Sección, 78210, San Luis Potosí, SLP, Mexico
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Bundschuh J, Bhattacharya P, Nath B, Naidu R, Ng J, Guilherme LRG, Ma LQ, Kim KW, Jean JS. Arsenic ecotoxicology: the interface between geosphere, hydrosphere and biosphere. JOURNAL OF HAZARDOUS MATERIALS 2013; 262:883-886. [PMID: 24055564 DOI: 10.1016/j.jhazmat.2013.08.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- Jochen Bundschuh
- Faculty of Health, Engineering and Surveying and NCEA, University of Southern Queensland, Toowoomba, QLD, Australia; KTH Royal Institute of Technology, Stockholm, Sweden.
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