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Chi Z, Xie X, Pi K, Wang Y. Mineralogical controls on arsenite adsorption onto soils: Batch experiments and model-based quantification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 767:144920. [PMID: 33636777 DOI: 10.1016/j.scitotenv.2020.144920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 12/26/2020] [Accepted: 12/26/2020] [Indexed: 06/12/2023]
Abstract
The accumulation of arsenic (As) in agrarian soils poses a potential long-term risk to human health, and this accumulation largely depends on the adsorption behavior of As onto soil minerals. This study considered the adsorption of As(III) onto natural soils from the Datong Basin, focusing on the quantification of the adsorption capacities of soil minerals and further the prediction of As(III) adsorption isotherms of the bulk soils. Linear programming calculations show that Fe-bearing minerals, illite, dolomite, and soil organic matter all contribute to As(III) adsorption, on average accounting for 73.9, 11.4, 8.2, and 6.5% of the overall adsorption capacity of soil to As(III), respectively. However, not all the Fe-bearing minerals in soils can adsorb As(III). Evidence from the sequential chemical extractions shows that 90.1% of the soil Fe is associated with silicates (FeSi), while results of the linear programming calculations suggest that FeSi cannot adsorb As(III). Based on the above results, a surface complexation model well predicts the experimental As(III) adsorption isotherms for aeolian and riverine soils. However, the adsorption of As(III) onto lacustrine soils is underestimated in both linear programming calculations and surface complexation modeling. This study highlights the importance of both Fe-bearing minerals and non-Fe minerals for As(III) adsorption and the difference in the adsorption capacity between various soil minerals. It further suggests that more comprehensive considerations are necessary when building a reactive transport model for As(III) in soil systems.
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Affiliation(s)
- Zeyong Chi
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074 Wuhan, China
| | - Xianjun Xie
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074 Wuhan, China.
| | - Kunfu Pi
- Ecohydrology Research Group, Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON, Canada
| | - Yanxin Wang
- State Key Laboratory of Biogeology and Environmental Geology & School of Environmental Studies, China University of Geosciences, 430074 Wuhan, China
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Tabelin CB, Silwamba M, Paglinawan FC, Mondejar AJS, Duc HG, Resabal VJ, Opiso EM, Igarashi T, Tomiyama S, Ito M, Hiroyoshi N, Villacorte-Tabelin M. Solid-phase partitioning and release-retention mechanisms of copper, lead, zinc and arsenic in soils impacted by artisanal and small-scale gold mining (ASGM) activities. CHEMOSPHERE 2020; 260:127574. [PMID: 32688316 PMCID: PMC7351430 DOI: 10.1016/j.chemosphere.2020.127574] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/23/2020] [Accepted: 06/29/2020] [Indexed: 05/28/2023]
Abstract
Artisanal and small-scale gold mining (ASGM) operations are major contributors to the Philippines' annual gold (Au) output (at least 60%). Unfortunately, these ASGM activities lacked adequate tailings management strategies, so contamination of the environment is prevalent. In this study, soil contamination with copper (Cu), lead (Pb), zinc (Zn) and arsenic (As) due to ASGM activities in Nabunturan, Davao de Oro, Philippines was investigated. The results showed that ASGM-impacted soils had Cu, Pb, Zn and As up to 3.6, 83, 73 and 68 times higher than background levels, respectively and were classified as 'extremely' polluted (CD = 30-228; PLI = 5.5-34.8). Minerals typically found in porphyry copper-gold ores like pyrite, chalcopyrite, malachite, galena, sphalerite and goethite were identified by XRD and SEM-EDS analyses. Furthermore, sequential extraction results indicate substantial Cu (up to 90%), Pb (up to 50%), Zn (up to 65%) and As (up to 48%) partitioned with strongly adsorbed, weak acid soluble, reducible and oxidisable fractions, which are considered as 'geochemically mobile' phases in the environment. Although very high Pb and Zn were found in ASGM-impacted soils, they were relatively immobile under oxidising conditions around pH 8.5 because of their retention via adsorption to hydrous ferric oxides (HFOs), montmorillonite and kaolinite. In contrast, Cu and As release from the historic ASGM site samples exceeded the environmental limits for Class A and Class C effluents, which could be attributed to the removal of calcite and dolomite by weathering. The enhanced desorption of As at around pH 8.5 also likely contributed to its release from these soils.
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Affiliation(s)
- Carlito Baltazar Tabelin
- School of Minerals and Energy Resources Engineering, The University of New South Wales, Sydney, NSW, Australia.
| | - Marthias Silwamba
- Division of Sustainable Resources Engineering, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Florifern C Paglinawan
- Developmental Biology Laboratory, PRISM, Mindanao State University-Iligan Institute of Technology, Iligan City, Philippines
| | - Alissa Jane S Mondejar
- Developmental Biology Laboratory, PRISM, Mindanao State University-Iligan Institute of Technology, Iligan City, Philippines
| | - Ho Gia Duc
- Division of Sustainable Resources Engineering, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Vannie Joy Resabal
- Department of Materials and Resources Engineering and Technology, College of Engineering and Technology, Mindanao State University-Iligan Institute of Technology, Iligan City, Philippines
| | - Einstine M Opiso
- Geo-environmental Engineering Research Group, Civil Engineering Department, Central Mindanao University, Bukidnon, Philippines
| | - Toshifumi Igarashi
- Division of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - Shingo Tomiyama
- Division of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - Mayumi Ito
- Division of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - Naoki Hiroyoshi
- Division of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - Mylah Villacorte-Tabelin
- Developmental Biology Laboratory, PRISM, Mindanao State University-Iligan Institute of Technology, Iligan City, Philippines; Department of Biological Sciences, College of Science and Mathematics, Mindanao State University-Iligan Institute of Technology, Iligan City, Philippines.
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Ayoub GM, Kalinian H, Zayyat R. Efficient phosphate removal from contaminated water using functional raw dolomite powder. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0833-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Calugaru IL, Neculita CM, Genty T, Bussière B, Potvin R. Performance of thermally activated dolomite for the treatment of Ni and Zn in contaminated neutral drainage. JOURNAL OF HAZARDOUS MATERIALS 2016; 310:48-55. [PMID: 26897574 DOI: 10.1016/j.jhazmat.2016.01.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 12/30/2015] [Accepted: 01/26/2016] [Indexed: 06/05/2023]
Abstract
Intensive research is ongoing for developing low-cost and highly efficient materials in metal removal from contaminated effluents. The present study evaluated dolomite [CaMg(CO3)2], both raw and modified by thermal activation (charring), for Ni and Zn treatment in contaminated neutral drainage (CND). Batch adsorption testing (equilibrium and kinetics) were conducted at pH 6, to evaluate the performance of initial vs. modified dolomite, and to assess potential mechanisms of metal removal. Charring of dolomite led to a rigid and porous material, mainly consisting of CaCO3 and MgO, which showed a sorption capacity increased sevenfold for Zn and doubled for Ni, relative to the raw material. In addition, Freundlich model best described the sorption of the both metals by dolomite, whereas the Langmuir model best described their sorption on charred dolomite. Plausible mechanisms of metal removal include cation exchange, surface precipitation and sorption processes, with carbonate ions and magnesium oxides acting as active centers. Based on these results, charred dolomite seems a promising option for the efficient treatment of Ni and Zn in CND.
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Affiliation(s)
- Iuliana Laura Calugaru
- Technology Center for Industrial Waste (CTRI- Centre Technologique des Résidus Industriels), 425 Boul. du College, Rouyn-Noranda, QC J9X 5E5, Canada; Research Institute on Mines and Environment (RIME), University of Quebec in Abitibi-Temiscamingue (UQAT), 445 Boul. de l'Universite, Rouyn-Noranda, QC J9X 5E4, Canada; College of Abitibi-Temiscamingue, 425 Boul. du College, Rouyn-Noranda, QC J9X 5E5, Canada
| | - Carmen Mihaela Neculita
- Research Institute on Mines and Environment (RIME), University of Quebec in Abitibi-Temiscamingue (UQAT), 445 Boul. de l'Universite, Rouyn-Noranda, QC J9X 5E4, Canada.
| | - Thomas Genty
- Technology Center for Industrial Waste (CTRI- Centre Technologique des Résidus Industriels), 425 Boul. du College, Rouyn-Noranda, QC J9X 5E5, Canada; Research Institute on Mines and Environment (RIME), University of Quebec in Abitibi-Temiscamingue (UQAT), 445 Boul. de l'Universite, Rouyn-Noranda, QC J9X 5E4, Canada
| | - Bruno Bussière
- Research Institute on Mines and Environment (RIME), University of Quebec in Abitibi-Temiscamingue (UQAT), 445 Boul. de l'Universite, Rouyn-Noranda, QC J9X 5E4, Canada
| | - Robin Potvin
- Technology Center for Industrial Waste (CTRI- Centre Technologique des Résidus Industriels), 425 Boul. du College, Rouyn-Noranda, QC J9X 5E5, Canada; College of Abitibi-Temiscamingue, 425 Boul. du College, Rouyn-Noranda, QC J9X 5E5, Canada
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