AI Article Synopsis
Article Abstract
Groundwater sulfate contamination in mining areas has attracted widespread attention. However, deciphering the source and evolution of sulfate in large-scale mining areas remains a challenge due to intense anthropogenic influences and complex hydrogeological conditions. In this study, 94 groundwater samples were analyzed by a combination of self-organizing maps, MixSiar model, multi-isotope analyses (δS, δO, δD and δO) and hydrogeochemical methods to investigate the regional characteristics of groundwater sulfate source and evolution in China's largest coalfield (the Shenfuyu Coalfield). The results showed that the source and evolution of groundwater sulfate were controlled by human activities (mining and agricultural activities) and hydrogeological conditions. The groundwater sulfate primarily originated from pyrite oxidation, gypsum dissolution and human inputs. For the mining districts with shallow mining depths, pyrite oxidation and fertilizer contributed to groundwater sulfate. In addition, the ground cracks and abandoned mines controlled the BSR and pyrite oxidation processes. In contrast, the gypsum dissolution and cation exchange dominated the sulfate evolution in the mining districts with deep mining depths due to slow groundwater circulation. This study provided new insights into the source and evolution of groundwater sulfate in large coalfields, as well as references for regional water resource utilization and protection.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jhazmat.2024.135866 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhanced efficiency fertilizers, potato production, and nitrate leaching in the Wisconsin Central Sands.
J Environ Qual
January 2025
Department of Soil Science, University of Wisconsin-Madison, Madison, Wisconsin, USA.
Maintaining yield goals while reducing nitrate-nitrogen (NO-N) leaching to groundwater is a challenge for potato (Solanum tuberosum) production in the Wisconsin Central Sands as well as across the United States. The objectives of this study were to quantify the effect of conventional and enhanced efficiency nitrogen (N) fertilizers on NO-N leaching, crop yield, and N uptake in potatoes. We compared five N treatments, which include a 0 N control and 280 kg ha as ammonium sulfate and ammonium nitrate (AS/AN), polymer-coated urea (PCU), urea with a urease inhibitor (Urea+UI), or urea with a UI and a nitrification inhibitor (Urea+UI+NI).
View Article and Find Full Text PDFDissolved beryllium (< 1 kDa) mobilized as a major element in groundwater in legacy mine waste.
Environ Pollut
January 2025
Applied Geochemistry, Department of Civil, Environmental and Natural Resource Engineering, Luleå University of Technology, Luleå, Sweden.
Article Synopsis
- Research on beryllium (Be) geochemistry in terrestrial environments is complicated due to its toxicity and low environmental concentrations, but high levels were found in groundwater at a Tailings Storage Facility in Sweden.
- A study from 2016-2024 analyzed groundwater samples and identified that over 90% of dissolved Be was truly dissolved in suboxic conditions, with significant concentrations correlated with sulfate complexes at pH levels of 6.0 to 6.4.
- The research indicated that as pH decreases, Be concentrations are likely to rise due to long-term sulfide oxidation, while secondary minerals on the tailings shore may act as temporary barriers that can limit Be mobility.
Multiple environmental tracers combined with a constrained Bayesian isotope mixing model to elucidate nitrate and sulfate contamination in a coastal groundwater system.
Sci Total Environ
January 2025
University of Natural Resources and Life Sciences, Institute of Soil Physics and Rural Water Management, Vienna 1190, Austria.
Several groundwater quality investigations have been conducted in coastal regions that are commonly exposed to multiple anthropogenic stressors. Nonetheless, such studies remain challenging because they require focused-diagnostic approaches for a comprehensive understanding of groundwater contamination. Therefore, this study integrates a multi-tracer approach to acquire comprehensive information allowing for an improved understanding of the origins of groundwater contamination, the relative contribution of contaminants, and their biogeochemical cycling within a coastal groundwater system.
View Article and Find Full Text PDFAssessing groundwater quality and suitability for Agricultural use in Punjab, India: A spatial and temporal analysis.
Environ Monit Assess
January 2025
Punjab Agricultural University, Ludhiana, 141004, Punjab, India.
Groundwater is a crucial global water resource; however, it faces the threat of depletion and quality degradation due to intensive agriculture and excessive fertilizer use. In India, groundwater assessments focus mainly on exploitation levels and often neglect quality. This study integrates groundwater quality with exploitation data to evaluate groundwater resources in Punjab, India.
View Article and Find Full Text PDFStudy of hydrophobic cemented paste backfill (H-CPB) to prevent sulphate attack.
Heliyon
November 2024
Department of Mining Engineering, Faculty of Engineering, Hadimkoy Campus, Istanbul University - Cerrahpasa, 34500, Istanbul, Turkiye.
One of the challenges encountered in mining is acid mine drainage (AMD) in sulphurous ores in response to rainfall and groundwater. CPB one of the most prevalent waste management systems addresses this issue today. Nevertheless, in the long term, the concretion in CPB may become ineffective because of external factors, such as groundwater and rainfall.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!