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Tum S, Matsumoto S, Nishikata M, Yasutaka T. Assessment of seasonal changes in groundwater quality of waste rock dump in temperate continental climate, northern Japan. CHEMOSPHERE 2023; 327:138482. [PMID: 36963590 DOI: 10.1016/j.chemosphere.2023.138482] [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: 11/21/2022] [Revised: 02/17/2023] [Accepted: 03/20/2023] [Indexed: 06/18/2023]
Abstract
Understanding seasonal groundwater quality changes in temperate continental climate waste rock dumps (WRDs) is necessary for sustainable environmental risk prevention and legacy mine contamination management. Therefore, we conducted a field investigation of a WRD to determine the mechanisms controlling its groundwater quality dynamics. The research aimed to understand the impact of seasonal changes on heavy metals released from the WRD. Three monitoring wells were installed in the WRD to investigate the pH, electrical conductivity (EC), and groundwater level (GL). The mineral composition of the waste rock was determined. Groundwater and river water samples from the monitoring wells and rivers surrounding the WRD were collected for chemical analysis. The sphalerite and galena concentrated in the WRD were assumed to be the main sources of Zn, Pb, and Cd contamination. Summer rainfall was the dominant recharge source of river water, which rapidly infiltrated to the WRD, altering the pH, EC, and GL of the groundwater. The pH, EC, and GL were stable in winter because snowpack covering the surface soil prevented groundwater recharge to the WRD. However, snow melting affected the pH, EC, and GL in the WRD. The sources of groundwater recharge (rainfall, river water, and snowmelt) altered the behaviour of the heavy metals in the WRD through two main mechanisms: the dissolution of sulphide minerals and efflorescent salts upon contact with the recharge water, and the dilution effect of the recharge water, which mixes with the groundwater in the WRD, reducing the heavy metal concentration. Sulphide mineral and efflorescent salt dissolution were significant in the deepest monitoring well and rainfall was the dominant recharge source which increased sulphide mineral and efflorescent salt dissolution in the WRD.
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Affiliation(s)
- Sereyroith Tum
- Institute for Geo-Resources and Environment, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8567, Japan
| | - Shinji Matsumoto
- Institute for Geo-Resources and Environment, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8567, Japan.
| | - Miu Nishikata
- Institute for Geo-Resources and Environment, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8567, Japan
| | - Tetsuo Yasutaka
- Institute for Geo-Resources and Environment, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8567, Japan
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Silva LFO, Bodah BW, Lozano LP, Oliveira MLS, Korcelski C, Maculan LS, Neckel A. Nanoparticles containing hazardous elements and the spatial optics of the Sentinel-3B OLCI satellite in Amazonian rivers: a potential tool to understand environmental impacts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27617-7. [PMID: 37193793 DOI: 10.1007/s11356-023-27617-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/09/2023] [Indexed: 05/18/2023]
Abstract
The Amazon River is the longest river in the world. The Tapajós River is a tributary to the Amazon. At their junction, a marked decrease in water quality is evident from negative impacts from the constant activity of clandestine gold mining in the Tapajós River watershed. The accumulation of hazardous elements (HEs), capable of compromising environmental quality across large regions is evident in the waters of the Tapajós. Sentinel-3B OLCI (Ocean Land Color Instrument) Level-2 satellite imagery with Water Full Resolution (WFR) of 300 m was utilized to detect the highest potential for the absorption coefficient of detritus and gelbstoff in 443 m-1 (ADG443_NN), chlorophyll-a (CHL_NN) and total suspended matter concentration (TSM_NN), at 25 points in the Amazon and Tapajós rivers (in 2019 and 2021). Physical samples of riverbed sediment collected in the field at the same locations were analyzed for NPs and ultra-fine particles to verify the geospatial findings. The riverbed sediment samples collected in the field were studied by Transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM), with selected area electron diffraction (SAED), following laboratory analytical procedures. The Sentinel-3B OLCI images, based on the Neural Network (NN) were calibrated by the European Space Agency (ESA), with a standard average normalization of 0.83 µg/mg, containing a maximum error of 6.62% applied to the sampled points. The analysis of the riverbed sediment samples revealed the presence of the following hazardous elements: As, Hg, La, Ce, Th, Pb, Pd, among several others. The Amazon River has significant potential to transport ADG443_NN (55.475 m-1) and TSM_NN (70.787 gm-3) in sediments, with the possibility of negatively impacting marine biodiversity, in addition to being harmful to human health over very large regions.
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Affiliation(s)
- Luis F O Silva
- CDLAC - Coleta de Dados Análises Laboratoriais E Científicas LTDA, Nova Santa Rita , 92480-000, Brazil
- Programa de Pós-Graduação Doutorado Em Sociedade Natureza E Desenvolvimento, Universidade Federal Do Oeste Do Pará, UFOPA, Paraná, 68040-255, Brazil
- Department of Civil and Environmental Engineering, Universidad de La Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia
| | - Brian William Bodah
- Thaines and Bodah Center for Education and Development, 840 South Meadowlark Lane, Othello, WA, 99344, USA
- Yakima Valley College, Workforce Education & Applied Baccalaureate Programs, South16th Avenue & Nob Hill Boulevard, Yakima, WA, 98902, USA
- ATITUS Educação, Passo Fundo, RS, 30499070-220, Brazil
| | - Liliana P Lozano
- Programa de Pós-Graduação Doutorado Em Sociedade Natureza E Desenvolvimento, Universidade Federal Do Oeste Do Pará, UFOPA, Paraná, 68040-255, Brazil
- Department of Civil and Environmental Engineering, Universidad de La Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia
| | - Marcos L S Oliveira
- CDLAC - Coleta de Dados Análises Laboratoriais E Científicas LTDA, Nova Santa Rita , 92480-000, Brazil
- Department of Civil and Environmental Engineering, Universidad de La Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia
- Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina-UFSC, Florianópolis, 88040-900, Brazil
| | - Cleiton Korcelski
- ATITUS Educação, Passo Fundo, RS, 30499070-220, Brazil
- Universidade Do Minho, UMINHO, 4710-057, Braga, Portugal
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