In addition, this amount of tailings discharged to the deep oceans is unlikely to exceed the natural deep-sea mineral deposits associated with hydrothermal vein systems in mid-ocean ridges. These ridges are highly enriched in metals.
Submarine tailings placement in Buyat Bay was the preferred tailings disposal method as approved by the Government of Indonesia for the Mesel Mine, located in North Sulawesi, Indonesia. In-situ tailings porewater assessment studies were conducted to evaluate the post-depositional behaviour of mercury and arsenic …
This finding supported the hypothesis that M. sinensis grown in tailings may recruit some diazotrophs as keystone taxa and also confirmed the DNA-SIP results that Pseudomonas and Stenotrophomonas were enriched in the heavy 15 N DNA fractions.
Nickel-mining companies in Indonesia have pitched the government to allow them to dump their waste, or tailings, into the sea. The country is the world's biggest producer of nickel, one of the ...
Many toxic and harmful substances from mine tailings produced in the process of metal mining and smelting migrate and diffuse to the surrounding environment through various channels during the long open storage process. After long-term rainwater leaching and soaking, residual heavy metal elements are repeatedly soaked by …
This study aims to present the characters and composition of detrital sediment on Senunu seabed. It illustrates the influence of land sediment sources on sediment …
In many countries, such as Brazil, Colombia, Ecuador, Indonesia, Venezuela and Zimbabwe, amalgamated tailings are leached with cyanide to recover remaining gold.
Ethylthionocarbamates (ETC), which is the most widely used as collectors in the flotation of sulfide, is known to cause serious pollution to soil and groundwater. The potential biodegradation of ETC was evaluated by applying a mixed culture of iron-reducing bacteria (IRB) enriched from tailings dam sediments. The results showed that ETC can be …
This work aimed to evaluate the effects of nutrient solution application on ecophysiological characteristics of Handroanthus serratifolius and Handroanthus impetiginosus cultivated in iron mine tailings. Sixty-day-old seedlings of both species were transplanted into mine tailings maintained at maximum water-holding capacity. …
At nearly every metal mine site, some form of mineral processing occurs, and tailings are being produced. In metal mining, the extracted ore mineral s represent only a small fraction of the whole ore mass; the vast majority …
Indonesia already has a copper and gold mine that practices deep-sea tailings disposal, or DSTD, with devastating impacts on the local ecosystem, activists say.
The Eocene kaolin mine tailings (MT-BNO6) and Cretaceous kaolin mine tailings (MT-BNO7-IP, MT-BNO7-IP H-P) were enriched in TiO 2 relative to UCC …
The new risk framework was then tested using a case study of the Batu Hijau copper mine in Indonesia, the largest DSTP operation globally. ... Tailings solids settle according to size and density, with coarser deposits settling first. ... Lead and manganese were particularly enriched close to the outfall, presumably as these metals were ...
The first use of a 2-m-deep permafrost cover for tailings in the Canadian Arctic (Kyhn and Elberling 2001) allowed tailings acid to be suppressed in cold winter temperatures, and the combination of low temperature and high water content inhibited oxygen migration and reactions, while the same effect was hardly guaranteed in …
This work aimed to evaluate the effects of nutrient solution application on ecophysiological characteristics of Handroanthus serratifolius and Handroanthus impetiginosus cultivated in iron mine tailings. Sixty-day-old seedlings of both species were transplanted into mine tailings maintained at maximum water-holding capacity. …
The analytical results clearly show that the mine tailings are, in relation to the natural materials lying under and on top of the tailings, enriched in the elements Ba, Bi, Cu, Hf and Zr. Elements such as As, Cr, Re, Th show a slight increase in concentration in the depths that are affected by tailings.
Tailings can contain both natural materials such as waste rock and chemically modified matter enriched in organic and inorganic phases . Its composition can be a helpful indicator of possible valuable metals left in parts of the unexploited deposit owing to either a big depth of occurrence, lack of adequate technology, lack of …
Known as deep-sea tailings disposal (DSTD), this type of dumping is already practiced by copper and gold miners in Indonesia — with devastating impacts on local ecosystems, activists say.
This study proved that the bacteria isolated from ASGM tailings have a great potential to be used as Hg bioaccumulation agents. The activity of small scale gold mining (ASGM) in Indonesia has expanded to Lombok Island, West Nusa Tenggara. The use of mercury (Hg) and the traditional mining process cause that the ASGM tailings waste …
The outlawing of DSTP was a ruling which also meant that the HPAL projects were delayed somewhat while alternatives were found. The requirement for land-based tailings disposal also added to the capital costs. On land options include the dry stacking of tailings, using tailings as backfill in mines and building conventional tailings dams.
REEs are not recovered and therefore the Sn mine tailings contain REEs largely as monazite and xenotime, which in turn are weathered, leading to the …
For the last several years in Indonesia, a team of Polish geologists have been evidencing and examining dumping sites and tailings generated by ongoing …
A mine tailings dam planned for a seismically unstable area of Sumatra's rainforest would be at high risk of failure, experts warn. The dam's collapse would be a disaster, they say, releasing a wall of slurry that would engulf and bury Indigenous …
Zircon tailings containing rare earth metals are one of the alternative raw materials from secondary sources in Indonesia. The objective is to determine the effects of several operating conditions ...
Tailings management is typically easier, at least physically, in dry climates, where advantage can be taken of desiccation (that is, drying by exposure to the wind and sun) to naturally dewater, increase the density of the tailings and strengthen the tailings.
When it comes to the near-term supply of nickel for the fast-growing EV battery demand side, all eyes are on Indonesia. This commentary takes a closer look at Indonesia's nickel strategy.
Outotec has been awarded a major contract for the delivery of sustainable tailings filtration technology to PT Huafei Nickel Cobalt's greenfield laterite …
In this study, the Fe-containing tailings (Fe-TO) ore was reutilized and enriched with FeCl3 as a heterogeneous catalyst for the Fenton process to degrade the organic dyes from aqueous solution. The determinants of the heterogeneous catalytic Fenton system which included iron modification ratio, solution pH, cataly
Mining generates 13 billion tonnes per year of potentially toxic wet slurry waste, called tailings, commonly deposited in tailings storage facilities (TSF).
This study investigated the recovery of nickel from tailings (0.2% Ni) obtained in a chromite beneficiation plant using H2SO4 leaching followed by oxalic acid precipitation. The tailings were characterized using mineral liberation analysis. Ni was found as Fe-Ni, Fe-Ni-Co sulfide minerals, which were encapsulated in serpentine, …