Nutrients: A sparse resource. Toxicities (serpentine soils ...
/ Nutrients: A sparse resource. Toxicities (serpentine soils and mine tailings). Plants in Action: Adaptation in Nature, Performance in Cultivation. South Yarra, Victoria : …
Asbestos tailings become a resource - Canadian Consulting ...
The discarded serpentine tailings from decades of asbestos mining have created a “lunar landscape” that stretches for eight miles near the town named after the mineral north of Sherbrooke, Quebec. Now the tailings are being mined themselves for magnesium as part of an innovative and huge project under the direction of SNC-Lavalin.
Tailing Disposal - an overview | ScienceDirect Topics
2.4 Beaching behavior of mine tailings. The predominant method of tailings disposal is by pumping and sub-aerial deposition of an aqueous slurry (typically at 30–45% initial solids concentration by mass and an initial gravimetric moisture content, w, of 233–122%) to a surface TSF. The tailings may be discharged from a single pipe outlet or from a number of reduced diameter spigots off the main …
Geotechnical Properties of Mine Tailings
duced coarse iron and fine iron tailings from the Yuhezhai iron mine were about 65–70 and 70 wt%, respectively, and the concen-trations of the coarse copper and fine copper tailings from the Bahuerachi copper mine were about 72 and 60 wt%. Test Methods A series of conventional laboratory experiments were carried out to
(PDF) Serpentine Soil - ResearchGate
Serpentine soils are generally deficient in plant essential nutrients such as nitrogen, phosphorus, potassium, and sulfur; have a calcium-to-magnesium (Ca:Mg) molar ratio of less than 1; and have ...
CHARACTERIZATION AND EVALUATION OF MAGNESITE …
tailings were classified as well-graded sand with Cu ≥6 and 1≥ Cc ≤3. The physic al properties of the tailings were compared with those of the soils used as fill material in foundation and/or road construction and river-sand used for different engineering purposes.
Serpentine soil - Wikipedia
Serpentine barrens often consist of grassland or savannas in areas where the climate would normally lead to the growth of forests. Serpentine soils can be amended to support crops and pasture land for cattle grazing. This can be done by adding ample amounts of gypsum to the soil.
WHEN BACKGROUND RISKS ARE IMPORTANT: METALS IN SOIL
SOURCE OF METALS: Mining in the Sierra Nevada Mountains and dredging deposited silt. HISTORY: Hydraulic extraction of gold in the mountains with mine tailings deposited in river systems. Transport of metal-rich silt in major surface water systems over long distances. Deposits of metal-rich silt in bays.
Serpentine and Its Plant Life in California
(serpentinite) rock that contains serpentine minerals (chrysolite, antigorite, lizardite, etc.). The minerals are composed of iron magnesium silicate. Serpentinite rock is a metamorphic member of the ultramafic family of rocks, derived from the earths mantle, surfacing where oceanic and conti-nental plates collide. Although serpentine soils ...
Geotechnical Properties of Mine Tailings | Journal of ...
The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, laboratory experiments were performed to investigate the geotechnical properties of four different tailings, including two iron tailings (coarse and fine) and two copper tailings (coarse and fine).
Feasible biotechnological and bioremediation strategies ...
Environmental biotechnology feasible biotechnological and bioremediation strategies for serpentine soils and mine spoils tine plants for the revegetation of chrysotile asbestos tail- ings.
Effects of chelators on chromium and nickel uptake by ...
Study tailings were obtained from a spoiled site with histories of serpentine-mining activities in eastern Taiwan for 20 years (1960–1980). The mine was exploited for serpentine and talc. The mine tailings were spread over approximately 0.4 ha of land at the mine surface …
Tailings - Wikipedia
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.. The extraction of minerals from ore can be done two ways: placer mining, which uses water ...
Distribution and Phytoavailability of Potentially Toxic ...
Serpentine-type tailing soils (STS) and olivine-type tailing soils (OTS) showed abundant Mg, while magnetite-type tailing soils (MTS) showed abundant Fe. In accordance with the pH characteristics, the highest concentrations of Ca and Mg were found in OTS.
Effects of Soil Composition and Mineralogy on the ...
Bioaccessibility tests and mineralogical analyses were performed on arsenic-contaminated tailings and soils from gold mine districts of Nova Scotia, Canada, to examine the links between soil composition, mineralogy, and arsenic bioaccessibility. Arsenic bioaccessibility ranges from 0.1% to 49%. A weak correlation was observed between total and bioaccessible arsenic concentrations, and the ...
Soft soils and mine tailings: long lost cousins?, Glasgow ...
Feb 11, 2020 · Drawing on 20 years on exposure to different cases of tailings management and some recent collaborations in sediment management, the presenter discusses some learnings from tailings behaviour that can be applied to more general geotechnical practice concerning soft soils. Registration from 5.30pm for a 6.15pm start. Tea/coffee and biscuits ...
Canadian Journal of Soil Science - Canadian Science Publishing
Jan 01, 2012 · Can. J. Soil Sci. 92: 203–211. To test the potential for production of bioenergy crops, such as canola and corn, an organic cover was constructed over acid-producing mine tailings containing nickel and copper, belonging to Vale in Sudbury, Ontario, Canada. The 1 m deep cover was of organic residuals (biosolids) obtained from a regional stone ...
Phytoremediation of mine tailings in temperate and arid ...
Dec 01, 2007 · Phytoremediation is an emerging technology for the remediation of mine tailings, a global problem for which conventional remediation technologies are costly. There are two approaches to phytoremediation of mine tailings, phytoextraction and phytostabilization. Phytoextraction involves translocation of heavy metals from mine tailings to the plant shoot biomass followed by plant harvest, …