User's Guide to PHREEQC

User's Guide to PHREEQC PDF Author: David L. Parkhurst
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 164

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Book Description

User's Guide to PHREEQC

User's Guide to PHREEQC PDF Author: David L. Parkhurst
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 164

Get Book Here

Book Description


User's Guide to PHREEQC

User's Guide to PHREEQC PDF Author: David L. Parkhurst
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 156

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Book Description


Description of Input and Examples for Phreeqc Version 3

Description of Input and Examples for Phreeqc Version 3 PDF Author: David L. Parkhurst
Publisher: Createspace Independent Publishing Platform
ISBN: 9781500563103
Category : Technology & Engineering
Languages : en
Pages : 518

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Book Description
PHREEQC version 3 is a computer program written in the C and C++ programming languages that is designed to perform a wide variety of aqueous geochemical calculations. PHREEQC implements several types of aqueous models: two ion-association aqueous models (the Lawrence Livermore National Laboratory model and WATEQ4F), a Pitzer specific-ion-interaction aqueous model, and the SIT (Specific ion Interaction Theory) aqueous model. Using any of these aqueous models, PHREEQC has capabilities for (1) speciation and saturation-index calculations; (2) batch-reaction and one-dimensional (1D) transport calculations with reversible and irreversible reactions, which include aqueous, mineral, gas, solid-solution, surface-complexation, and ion-exchange equilibria, and specified mole transfers of reactants, kinetically controlled reactions, mixing of solutions, and pressure and temperature changes; and (3) inverse modeling, which finds sets of mineral and gas mole transfers that account for differences in composition between waters within specified compositional uncertainty limits.

Water-resources Investigations Report

Water-resources Investigations Report PDF Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 44

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Book Description


Radionuclides in the Environment

Radionuclides in the Environment PDF Author: Clemens Walther
Publisher: Springer
ISBN: 331922171X
Category : Science
Languages : en
Pages : 277

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Book Description
This book provides extensive and comprehensive information to researchers and academicians who are interested in radionuclide contamination, its sources and environmental impact. It is also useful for graduate and undergraduate students specializing in radioactive-waste disposal and its impact on natural as well as manmade environments. A number of sites are affected by large legacies of waste from the mining and processing of radioactive minerals. Over recent decades, several hundred radioactive isotopes (radioisotopes) of natural elements have been produced artificially, including 90Sr, 137Cs and 131I. Several other anthropogenic radioactive elements have also been produced in large quantities, for example technetium, neptunium, plutonium and americium, although plutonium does occur naturally in trace amounts in uranium ores. The deposition of radionuclides on vegetation and soil, as well as the uptake from polluted aquifers (root uptake or irrigation) are the initial point for their transfer into the terrestrial environment and into food chains. There are two principal deposition processes for the removal of pollutants from the atmosphere: dry deposition is the direct transfer through absorption of gases and particles by natural surfaces, such as vegetation, whereas showery or wet deposition is the transport of a substance from the atmosphere to the ground by snow, hail or rain. Once deposited on any vegetation, radionuclides are removed from plants by the airstre am and rain, either through percolation or by cuticular scratch. The increase in biomass during plant growth does not cause a loss of activity, but it does lead to a decrease in activity concentration due to effective dilution. There is also systemic transport (translocation) of radionuclides within the plant subsequent to foliar uptake, leading the transfer of chemical components to other parts of the plant that have not been contaminated directly.

Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3

Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3 PDF Author: Liangtong Zhan
Publisher: Springer
ISBN: 9811322279
Category : Science
Languages : en
Pages : 592

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Book Description
This book gathers selected papers presented at the 8th International Congress on Environmental Geotechnics (ICEG), held on October 28 - November 1, 2018 in Hangzhou, China. The theme of the congress is “Towards a Sustainable Geoenvironment”, which means meeting the needs of the present generation without compromising the ability of future generations to meet their own needs. Under this theme, the congress covers a broad range of topics and provides an excellent opportunity for academics, engineers, scientists, government officials, regulators, and planners to present, discuss and exchange notes on the latest advances and developments in the research and application of environmental geotechnics.

Lake Issyk-Kul: Its Natural Environment

Lake Issyk-Kul: Its Natural Environment PDF Author: J. Klerx
Publisher: Springer Science & Business Media
ISBN: 9781402009006
Category : Science
Languages : en
Pages : 308

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Book Description
Lake Issyk-Kul is a closed lake located in the Tien Shan mountain belt of the Republic of Kyrgyzstan. It is the world's fifth deepest lake (668 m) and the second largest high altitude lake in the world (1607 m above sea level). The lake is affected by several environmental threats of both anthropogenic and natural origin: decline of the lake level resulting in progressively increasing salinity, incomplete vertical water exchange, and risk of contamination by past and present industrial activity. Although the lake has been intensively studied, the information is only available in unpublished reports or local scientific journals. This book presents for the first time to an international audience the main physical, chemical, biological and geological characteristics of the lake, the fruits of many years of observations, complemented by recent results of international projects. Case studies of similar problems in other parts of the world are presented, together with ethical aspects of the environmental protection of the lake.

Geochemical Treasures and Petrogenetic Processes

Geochemical Treasures and Petrogenetic Processes PDF Author: John S. Armstrong-Altrin
Publisher: Springer Nature
ISBN: 9811947821
Category : Science
Languages : en
Pages : 529

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Book Description
This book highlights various aspects of geochemical and geological processes. In brief, it facilitates to understand the geochemical behavior of major, trace and rare earth elements in rocks to identify the magmatic processes involved in present-day magma generation and their relation to global tectonic regimes as well as geothermal studies. Therefore, the book provides a comprehensive view of the generation of magma types (mafic to felsic in composition) and their role in the petrogenesis. The book also covers the development of new geosoftware to effectively process the geochemical data before its interpretation.

Groundwater

Groundwater PDF Author: M. Thangarajan
Publisher: Springer Science & Business Media
ISBN: 1402057296
Category : Science
Languages : en
Pages : 372

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Book Description
This book provides comprehensive coverage on the assessment and management of groundwater. It contains the work of international experts in the field of groundwater resource evaluation, characterization, augmentation, restoration, modeling and management.

Natural Groundwater Quality

Natural Groundwater Quality PDF Author: W. Mike Edmunds
Publisher: John Wiley & Sons
ISBN: 1444300350
Category : Science
Languages : en
Pages : 488

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Book Description
This text presents a series of thematic chapters together with chapters on representative groundwater systems in Europe which illustrate the main processes and evolution of water quality. Brings together the research of a consortium of leading European scientists who have conducted detailed studies of water quality in Europe Includes a synthesis of findings, highlighting the thematic and regional results, with recommendations regarding aquifer evaluation, indicators, monitoring, and drinking water standards Creates a key reference work on natural water quality of aquifers, at a time when the Groundwater Directive (GD) will shortly be brought in to supplement The European Water Framework Directive (WFD) to ensure good status of groundwater