4 edition of Acid generation and metal mobility of some metal-mining related wastes in Colorado found in the catalog.
Acid generation and metal mobility of some metal-mining related wastes in Colorado
by U.S. Dept. of the Interior, U.S. Geological Survey in [Reston, Va.?]
Written in English
|Statement||George Desborough ... [et al.]|
|Series||Open-file report -- 99-322, U.S. Geological Survey open-file report -- 99-322|
|Contributions||Desborough, George A, Geological Survey (U.S.)|
|The Physical Object|
|Number of Pages||18|
The EPA has calculated that 40 percent of river headwaters in the West are impaired by acid mine drainage. In Colorado, state health officials . This potential acid generation will depend mainly on the chemical and mineralogi cal composition of the waste. Material with a high sulfur con tent, especially pyritic ores, and low acid consumption, mainly related to a low calcium carbonate content, will present a high potential acid generation.
Uranium is a metal that releases harmful radiation. Radiation causes cancer, skin diseases, and other serious health problems. People are exposed to uranium through mining it, processing it, or living near uranium mines or waste dumps. Uranium is used to make 2 things: nuclear weapons and nuclear energy. Both are costly, dangerous, and not needed. Mining Industry Wastewater Treatment and Metals Recovery As mining sites continue to expand into remote locations, developers are faced with the challenge of minimizing the impact of large runoff streams and metals-laden wastewater on the local environment. To address these challenges, Ecologix provides a complete range of integrated water and wastewater treatment systems and services. .
Metal Mining Sector Notebook Project EPA/R EPA Office of Compliance Sector Notebook Project Profile of the Metal Mining Industry September Office of Compliance Office of Enforcement and Compliance Assurance U.S. Environmental Protection Agency M St., SW (MC A) Washington, DC For sale by the U.S. Government Printing Office Superintendent of . Bioavailability and the mobility of metals are also related to each other, then higher the concentration of mobile toxic metals (Cu, Pb, Cd, and Al) in the soil column which increases the potential for plant uptake, and animal/human consumption [3, 7, 8].
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Free 2-day shipping. Buy Acid Generation and Metal Mobility of Some Metal-Mining Related Wastes in Colorado: Open-File Report at Acid generation and metal mobility of some metal-mining related wastes in Colorado (OCoLC) Online version: Desborough, George A.
Acid generation and metal mobility of some metal-mining related wastes in Colorado (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.
Acid generation and metal mobility of some metal-mining related wastes in Colorado / George Desborough [and five others]. Format Online Resource Book Published Denver, Colorado: U.S.
Department of the Interior, U.S. Geological Survey, Description 1 online resource (18 pages): illustrations. URL. Acid generation and metal mobility of some metal-mining related wastes in Colorado (OCoLC) Microfiche version: Acid generation and metal mobility of some metal-mining related wastes in Colorado (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type.
metal mining segments "because of the extremely large quantities of waste and the relatively high proportion of total waste that is of potential concern, particularly in the dump leaching and milling operations."*2 Total costs for different metal sectors in Table 5. The EPA study also considered the effect of compliance costsCited by: 1.
It was found that some metal concentrations in the pre-monsoon water samples were high compared to those in the post-monsoon water samples. Experiments were performed to ascertain the acid producing potential (APP) of the mine wastes and their potential influence on metal leaching into the surface and groundwater of the area.
Field sampling and sample preparation. Mine wastes samples were collected in June from exposed weathering profiles in the tailings I and IV ().The sedimentological characteristics of these profiles are described in Nieva et al.
().Briefly, the depth profile in tailing I (Fig. 1a) consists of a ∼ cm depth succession of clayed silt and sandy layers, that have been divided into.
2 (Fe1-xS, acid production by mine wastes (Stumm and Morgan ). Equations 1 and 2 represent pyrite and pyrrhotite oxidation by oxygen (after Stumm and Morgan ; Nelson ). In addition to acid (H+), sulfate is also released to solution, and its presence in mine waste drainage is typically th e first indicator of sulf ide mineral oxidation.
short case studies of four sites on the NPL due, in part to acid drainage (U.S. EPA ). Wastes that have the potential to generate acid as a result of metal mining activity include mined material such as spent ore from heap leach operations, tailings, and waste rock units, including overburden material.
(radioactive wastes, marble slurry, etc.). Some of key wastes generated from the industry are discussed in detail in the following section. Waste rock Mining operations generate two types of waste rock - overburden10 and mine development rock.
Overburden results from the development of surface mines, while mine development rock is a by. Acid generation and metal mobility of some metal-mining related wastes in Colorado / by: Desborough, George A., Published: () Holding EPA accountable for polluting western waters: hearing before the Committee on Science, Space, and Technology, House of Representatives, One Hundred Fourteenth Congress, first session, September 9, David L.
Fey's 50 research works with citations and 3, reads, including: Mercury concentrations and distribution in soil, water, mine waste leachates, and air in and around mercury mines in. amount of heavy metals to the bio sphere. The primary sources of metal pollution are the burning of fossil fuels, smelting of metal like ores, municipal wastes, fertilizers, pesticides and sewage (Nriagu,; Pendias and Pendias, ; Rai, ).
Heavy metal contamination and acid mine drainage are very important concerns. Developed physical and chemical heavy metal remediation technologies are demanding costs which are not feasible, time-consuming, and release additional waste to the environment. This chapter summarises the problems related to heavy metal pollution and various remediation technologies.
A case study in South Africa mines were also used. Types of Wastes Generated at Metal Finishing Facilities(cont.) Spill residue (i.e., kitty litter, soils, liquids, etc.) Maintenance tools (i.e., mops, brooms, etc.) Used Oil Used Personal Protective Equipment Waste paint-related materials (includes solvents used for cleaning) Spent fluorescent lamps Spent batteries.
The low pH water that results from acid generation is capable of solubilizing heavy metals contained within the waste rock. Most harmful to the environment is the high metals loading in the water emanating from the waste material.
As AMD flows away from the acid-generating source and moves into the receiving environment where the pH is. containing wastes, 95 million tons per year of wastes with high acid formation potential, and million tons per year of copper leach dump wastes with potential for releasing toxic metals and acidic liquids.7 see Table 2.
Still unanswered is the question of the actual risk to human health and the environment posed by these hazardous wastes. Acid Mine Drainage: Chemistry Acid mine drainage impacts stream and river ecosystems through acidity, ferric ion (Fe 3+) precipitation, oxygen depletion, and release of heavy metals associated with coal and metal mining, such as aluminum (Al 3+), zinc (Zn 2+), and manganese (Mn 2+).
When mineral deposits that contain sulfides are mined, they have the potential to produce acid. 1. Introduction. Heavy metals are released into the environment by both natural and anthropogenic sources.
With the exception of soils derived from the physical and chemical weathering of parent materials containing elevated levels of trace elements (e.g. black shales and basic igneous rocks), the presence of elevated metal concentrations in the environment is related to man's activities .
Colorado was authorized by the U.S. Environmental Protection Agency (EPA) to implement the hazardous waste program in The Colorado legislature established the basic program in statute in Title 25 Arti while the Colorado Hazardous Waste Regulations laid out the detailed program framework in 6 CCR.
required using kinetic testing, which would help determine the mining waste potential for long term acid generation. Analytical procedures exist for determining AGP and ANP, and thereby determining the overall acid-base account, of a waste as shown in Table 3.
Table 3. Analysis Parameters and Methods for Acid Base Accounting of Solid Samples.Recycling historical metal mining waste-rock piles Old, inactive hardrock mines in the western US are a result of the California gold rush of the mids and the other mining booms that followed.The geochemistry of waste rock varies widely from mine to mine and may vary significantly at individual mines over time as different lithological units are exposed.
Generally, waste rock at metal mines always contain some concentration of the target mineral, along with other metals and often sulfidic materials.