Download or read book Geochemical Modeling of Processes Affecting Water and Sediment Chemistry and Their Relationship to Biological Recovery in an Acid Mine Drainage Remediated Stream written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relationship Between Aqueous and Sediment Chemistry and Its Impact on Biological Recovery in Acid Mine Drainage impaired Streams written by Saruul Damdinbal and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acid Mine Drainage Rock Drainage and Acid Sulfate Soils written by James A. Jacobs and published by John Wiley & Sons. This book was released on 2014-04-28 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the tools needed to analyze and solve acid drainage problems Featuring contributions from leading experts in science and engineering, this book explores the complex biogeochemistry of acid mine drainage, rock drainage, and acid sulfate soils. It describes how to predict, prevent, and remediate the environmental impact of acid drainage and the oxidation of sulfides, offering the latest sampling and analytical methods. Moreover, readers will discover new approaches for recovering valuable resources from acid mine drainage, including bioleaching. Acid Mine Drainage, Rock Drainage, and Acid Sulfate Soils reviews the most current findings in the field, offering new insights into the underlying causes as well as new tools to minimize the harm of acid drainage: Part I: Causes of Acid Mine Drainage, Rock Drainage and Sulfate Soils focuses on the biogeochemistry of acid drainage in different environments. Part II: Assessment of Acid Mine Drainage, Rock Drainage and Sulfate Soils covers stream characterization, aquatic and biological sampling, evaluation of aquatic resources, and some unusual aspects of sulfide oxidation. Part III: Prediction and Prevention of Acid Drainage discusses acid-base accounting, kinetic testing, block modeling, petrology, and mineralogy studies. It also explains relevant policy and regulations. Part IV: Remediation of Acid Drainage, Rock Drainage and Sulfate Soils examines both passive and active cleanup methods to remediate acid drainage. Case studies from a variety of geologic settings highlight various approaches to analyzing and solving acid drainage problems. Replete with helpful appendices and an extensive list of web resources, Acid Mine Drainage, Rock Drainage, and Acid Sulfate Soils is recommended for mining engineers and scientists, regulatory officials, environmental scientists, land developers, and students.

Download or read book Geochemical Modeling for Mine Site Characterization and Remediation written by D. Kirk Nordstrom and published by Society for Mining, Metallurgy & Exploration. This book was released on 2017-10-01 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The single most important factor for the successful application of a geochemical model is the knowledge and experience of the individual(s) conducting the modeling. Geochemical Modeling for Mine Site Characterization and Remediation is the fourth of six volumes in the Management Technologies for Metal Mining Influenced Water series about technologies for management of metal mine and metallurgical process drainage. This handbook describes the important components of hydrogeochemical modeling for mine environments, primarily those mines where sulfide minerals are present—metal mines and coal mines. It provides general guidelines on the strengths and limitations of geochemical modeling and an overview of its application to the hydrogeochemistry of both unmined mineralized sites and those contaminated from mineral extraction and mineral processing. The handbook includes an overview of the models behind the codes, explains vital geochemical computations, describes several modeling processes, provides a compilation of codes, and gives examples of their application, including both successes and failures. Hydrologic modeling is also included because mining contaminants most often migrate by surface water and groundwater transport, and contaminant concentrations are a function of water residence time as well as pathways. This is an indispensable resource for mine planners and engineers, environmental managers, land managers, consultants, researchers, government regulators, nongovernmental organizations, students, stakeholders, and anyone with an interest in mining influenced water. The other handbooks in the series are Basics of Metal Mining Influenced Water; Mitigation of Metal Mining Influenced Water; Mine Pit Lakes: Characteristics, Predictive Modeling, and Sustainability; Techniques for Predicting Metal Mining Influenced Water; and Sampling and Monitoring for the Mine Life Cycle.

Download or read book Development and Application of Field Methods for Determination of the Extent of Acid Mine Drainage Contamination and Geochemical Characteristics of Stream Sediment Recovery written by Jacob Lee Williamson and published by . This book was released on 2016 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geochemical Assessment of Temporal and Spatial Variations in a Stream Impacted by Acid Mine Drainage Tuscaloosa County Alabama written by Patrick Dustin Hawkins and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Harris (LH), a 220-acre reservoir constructed in 1929, is a primary source of water for industry and the tertiary source for drinking water. Between 1969 and 1976, shallow coal seams hosted by the Pottsville Formation were strip mined and left abandoned without reclamation until 1986. For over a decade, sediment erosion and acid mine drainage (AMD) damaged the aquatic ecosystem of LH stream. Despite reclamation in 1986, LH Stream still shows visible signs of AMD impacts. This research used geochemical analysis to evaluate the impact of legacy mining on the processes and controls affecting LH Stream. LH Stream water data indicated that AMD impacts resulted in elevated levels of dissolved sulfate, chloride, Al, Ba, Ca, Co, Cr, Fe, K, Mg, Mn, Ni and Sr when compared to the CCW Stream and Lake Harris Lake Water (LHLW) samples. Additionally, the presence of iron-rich precipitates observed on the stream bed was confirmed by XRD and MWD analyses of the stream sediments, further supporting the presence of the AMD generation processes in the watershed. Principal Component Analysis (PCA) identified two principal components that make up a combined 73.2 percent of the total variance in the dataset. Principal Component 1 (PC-1) being strongly associated with AMD impacts and PC-2 being identified as a function of temperature and meteoric influences. Relationships between LH Stream water and GW samples with respect to PC-1 provides evidence that LH Stream receives GW during the wetter months. With respect to PC-2, the chemistry of CCW Stream and LHLW samples was strongly correlated with that ofivmeteoric water, indicating that CCW Stream is predominantly fed by precipitation and surface runoff.Data confirms that AMD still impact LH Stream due to oxidation of sulfide-bearing minerals within the poorly reclaimed Pottsville Formation mine spoil. Acidic conditions have resulted in the mobility of elements within the stream water discharging into Lake Harris. Upon reaching Lake Harris, the stream water mixes with lake water to further dilute trace element concentrations to levels at which acute impacts are minimized. However, chronic risks such as bioaccumulation were not assessed as a part of this study.

Download or read book U S Geological Survey Professional Paper written by S. E. Church and published by . This book was released on 1984 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1989 with total page 1296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geochemical Modelling of Acid Mine Drainage AMD and Processes Controlling the Fate and Transport of AMD Pollutants in Groundwater Around Kansanshi Mine Site in Solwezi Town Zambia written by Kenny Nyirenda and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complex geochemical reaction processes that occur within the tailings impoundments control the chemistry of resulting seepage or drainage water. In this dissertation, the second chapter focuses on simulating seepage water chemistry from the main sulphide tailings storage facility (TSF) around Kansanshi mine site in Zambia and its geochemical evolution in the underlying unconfined schist aquifer. The result of this study indicates that seepage water chemistry from the main sulphide TSF is likely to be within near neutral range (6.3 to 6.6) with elevated concentrations of sulphate and low concentration of Fe and Mn. The presence of calcite, dolomite and aluminosilicate minerals in the tailings helps to buffer the pH of the simulated seepage water within near neutral range favorable for the removal of metals from the solution through precipitation. Elevated sulphate levels in simulated seepage water results from the dissolution of both gypsum and pyrite. As the tailings water seeps into the shallow unconfined schist aquifer, geochemical simulations suggests that the presence of pyrite in the aquifer can moderately contribute to elevated concentrations of sulphate along the groundwater flow path with decreasing thickness of the capillary fringe or depth to water due to oxidation promoted by the increased rate of oxygen diffusion. The third chapter investigated the influence of fracture zones on solute (SO42-, Fe and Mn) transport from the main TSF using Equivalent Porous Media (EPM) approach, focusing on sulphate since it is the least reactive and can migrate far from the source. Two solute transport models were developed; one involving an EPM-only representation of the mapped fracture zones, and one including hypothetical fractures as high hydraulic conductivity zones to explore how unmapped fractures could impact solute transport. Results of the simulations revealed that only the model which incorporated hypothetical fractures to intersect wells that consistently show elevated sulphate concentrations show some degree of a match between the simulated and observed sulphate concentrations especially with boreholes KE03 and KE04 situated downstream of the main TSF, with the sulphate plume (>100mg/L) elongated along all fracture zones cutting across the dam. This demonstrates that fractures have a greater effect on solute transport than unfractured representation of the porous matrix, suggesting a simple EPM-based conceptual model may not be able to realistically represent transport behaviors in this system. However, in both cases, results from both solute transport models show that both Fe and Mn are restricted to the main TSF footprint and thus are not likely to be of concern from the facility.

Download or read book Integrated Investigations of Environmental Effects of Historical Mining in the Animas River Watershed San Juan County Colorado written by S. E. Church and published by . This book was released on 2007 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geochemistry of Ground Water in Mine Drainage Problems written by Ivan Barnes and published by . This book was released on 1964 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Critical Review of Geochemical Processes and Geochemical Models Adaptable for Prediction of Acidic Drainage from Waste Rock written by and published by . This book was released on 1995 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic and Geochemical Factors Affecting the Chemistry of Small Headwater Streams in Response to Acidic Deposition on Catoctin Mountain North Central Maryland written by Karen C. Rice and published by . This book was released on 1996 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rehabilitation of Streams Receiving Acid Mine Drainage written by Edwin E. Herricks and published by . This book was released on 1974 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Recovery of Stream Macrobenthic Communities from the Effects of Acid Mine Drainage written by Edwin Eugene Herricks and published by . This book was released on 1973 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Precipitation on the Acid Mine Drainage Impacted Hewett Fork Watershed written by Zebulon Martin and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Limited biological recovery in acid mine drainage (AMD) impacted streams may be due in part to a flushing response caused by rainfall events. While there is very little water required to react with sulfide minerals to form AMD, more is required to dissolve and transport the chemical products. Increased discharge allows for the transport of accumulated reaction products from mineral surfaces and mobilization of sediments from streambeds. The objective of this study was to investigate this flushing behavior in the heavily AMD impaired Hewett Fork Watershed by tracking the changes in water chemistry over the course of multiple rain events and seasonal flow regimes.

Download or read book Effects of Precipitation Patterns on Sediment Nutrient and Biofilm Dynamics in an Acid Mine Drainage Stream written by Jennie Brancho and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although acid mine drainage (AMD) in the Appalachian Coal Basin has been studied for decades, the effects of climate change on these streams are not well documented. Climate change predictions for this area include increased storm frequency and intensity, which may alter AMD generation, iron hydroxide precipitation, and fate and transport of contaminants and sediments. These processes substantially affect nutrient availability and the biological communities inhabiting these streams. This study investigates the potential effects of climate change on a treated AMD stream, Hewett Fork, by quantifying changes in nutrient concentrations, sediment transport, and algal biofilm biomass during normal and storm conditions.