Biosorption is a significant mechanism of MT tailings treatment by algae. Literature reported dead cells of algae to be more efficient for metal removal compared to the living cells in cases where the carboxyl group significantly influences metal binding on the surface of the cell and intracellular ligands (Srinath et al., 2002; Velásquez and ...

Mine tailings are the byproduct of mining activities, which need to be disposed of once the minerals in the ore are extracted. They can be disposed of in either dry or wet forms. The latter is most common, with the tailings being disposed of in the form of slurry inside retention structures. The retention structure may be a natural or …

Development of mineral resources and the increasing mining waste emissions have created a series of environmental and health-related issues. Nowadays, …

Therefore, management and treatment of mine tailings is a global issue requiring urgent solutions. However, conventional technologies for treatment of tailings, such as physical and chemical stabilization, are limited by their high costs (approximately US$1.50–450 m −3) (Mendez and Maier, 2008).

Over the last two decades, much effort has been devoted to development of technologies for oil sand tailings treatment including composite tailings, flocculation by polymers, fine tailings centrifuge and freeze/thaw method (Jeremy Boswell, 2012, Xu et al., 2008).Flocculation by polymers has been extensively explored and implemented by the …

Pyrrhotite, as an iron sulfide with a lower sulfur content over pyrite, can also be produced during the thermal treatment of sulfidic mine tailings. Pyrrhotite is a …

Load-and-haul mining will be used to extract resources from the smaller North Sands and South Sands tailings dumps. The re-mined tailings will be processed in a CIL plant of similar design to the Elikhulu operation, with an additional water treatment plant that will help limit corrosion and potentially improve gold recoveries.

However, many are the treatment methods that can be used to valorize, activate, and prepare mine tailings. Such treatment approaches can be generally classified as chemical, mechanical, and thermal while a combination of which is also possible. The aim of treatment(s) is to change the chemical, physical, and mineralogical …

PDF | On Jan 1, 1998, M. J. Dry and others published Copper cobalt tailings treatment project, Democratic Republic of Congo | Find, read and cite all the research you need on ResearchGate

For example, typical coal preparation plants discharge 75–120 kg of dry tailings per tonne of coal processed.These tailings are in the slurry form, with total solid contents ranging between 20% and 35% (w/w) (Ryu et al., 2008, Beier and Sego, 2009, Murphy et al., 2012).In 2002, the U.S. National Research Council estimated that 70–90 …

Current state of fine mineral tailings treatment: A critical review on theory and practice. Author links open overlay panel Chen Wang, David Harbottle, Qingxia Liu, Zhenghe Xu. Show more. Add to Mendeley ... These tailings are in the slurry form, with total solid contents ranging between 20% and 35% (w/w) (Ryu et al., 2008, Beier and …

Notes on contributors. Sabereh Rezaei is a Postdoctoral researcher in the Sustainable Materials Processing Research Group at the University of Toronto. Her research interests include development of integrated energy-efficient, cost-effective and environmentally friendly processes to treat industrial wastes, as well as novel materials …

Deng Hongyun (Deng et al., 2022) made a comprehensive review of the treatment processes of montebrasite. He mentioned multiple problems that may be encountered in industrialization and gave reasonable suggestions. Similar to Paulo's study, he proposed treating montebrasite with sulfuric acid at 800 °C and achieved an Li …

Mine Tailings Water Treatment. The composition of tailing water can vary significantly depending on the ore being mined and the processing methods used. Here's a breakdown of some key contaminants and their potential environmental threats: Suspended Solids: These fine particles (think silt or clay) range in size from 1 micrometer (µm) to 1 ...

The physical-chemical strategies of conventional technologies, such as constructed barriers were implemented to prevent the further spreading of tailings, but are limited by their high costs (approximately 100–500 $/ton) (Cristaldi et al., 2017).Phytoremediation are also limited because the acidification conditions of tailings …

Mine tailings are the waste materials generated during the mining process, which often contain a mixture of crushed rocks, chemicals, and potentially hazardous materials such as heavy metals, asbestos, …

Pyrite is widely distributed in the Earth's crust and oceanic systems, and it generally occurs as pentagonal dodecahedra, cubic, octahedral, idiomorphic crystals, or dense, massive, granular, and …

Having acquired the Mintails assets, Pan African's ongoing strategy to re-process historical tailings dams is expected to make the area safer and greener, while generating economic benefits for the communities and generating significant profits at current gold price levels.

ATA® provides a safe and low-cost mine tailings treatment process which rapidly separates water and solids to produce stackable tailings and recycled water. The technology uses smart chemistry to rapidly agglomerate the solids in ore slurries. The resulting materials can be compressed and stacked, with the extracted water being …

The failure of tailings dams is not unusual; experts estimate that a tailings dam failure occurs roughly every eight months. Even a well-managed tailings facility can pose risks in the way of contaminated dust (in the …

Microalgae appear to be a promising and ecologically safe way for nutrients removal from rare earth tailings (REEs) wastewater with CO 2 fixation and added benefits of resource recovery and recycling. In this study, a pilot scale (50 L) co-flocculating microalgae photobioreactor (Ma-PBR) as constructed and operated for 140 days to treat …

It was concluded that acid leaching of base metals from old pyrite flotation tailings with pregnant leach solution for the ferric leaching of copper converter slag …

The "Understanding Oil Sands Tailings Treatment at Nano, Micro and Macro-Scales with Increased Water Recycling/Reuse" project was awarded $377.2K to develop a novel, low-cost and environmentally friendly polymer flocculants that are able to efficiently and significantly increase the settling rate of the fine solid particles in tailings, and ...

3.2 Mineralogical Characterization at the Bulk Scale. Solid phases were analyzed by X-ray diffraction ().In the Fe-diss experiment, precipitates formed after 1 week of incubation were mostly amorphous with only a tiny peak at 20° 2θ angle (Co Kα), characteristic of mackinawite (FeS). After 1 month, mackinawite increased in crystallinity, as illustrated …

The tailings sand used in this test was the new tailings sand of Xinqiao pyrite. MICP biocementation reduced the permeability coefficient of the tailings by …

Operators must submit a summary of fluid tailings management activities during the reporting period, including fluid tailings treatment and placement operations (showing alignment with the reclamation plan), technology development, and contingency or mitigation actions initiated in response to fluid tailings volume profile deviations or ...

DOI: 10.1016/J.MINENG.2014.01.018 Corpus ID: 96620110; Current state of fine mineral tailings treatment: A critical review on theory and practice @article{Wang2014CurrentSO, title={Current state of fine mineral tailings treatment: A critical review on theory and practice}, author={Chen Wang and David Harbottle and Qingxia Liu and Zhenghe Xu}, …

The electronegativity difference between Fe and S suggests predominantly covalent bonding which is defined by the overlap of the 3d valence electrons of Fe and the 3p valence electrons of S [7], [22].Pyrite has a relatively high rest potential of approximately 0.66 V [25] making it the most electrochemically inert of the common sulfide minerals …

Tailings treatment can include addition of organic polymers to produce thickened tailings (TT). TT may be further de-watered by deposition into geotechnical cells for evaporative drying to increase shear strength prior to reclamation. To examine the acid rock drainage (ARD) potential of TT, we performed predictive analyses and laboratory ...

A substantial amount of bauxite tailings (BTs) at abandoned mine sites have been stored in waste reservoirs for long periods, leading to significant land occupation and environmental degradation. Although many studies of the resource utilization of BTs were conducted to address this challenge, there is still a lack of efforts to systematically …