Results 21 to 30 of about 398 (170)

Revealing Heavy Metal-Resistant Mechanisms and Bioremediation Potential in a Novel Croceicoccus Species Using Microbial-Induced Carbonate Precipitation

Journal of Marine Science and Engineering, 2023
Polymetallic nodules and polymetallic sulfides are currently the major mineral resources found on the seabed. The motivation behind deep-sea mining arises from the pursuit of valuable metals, driven by both economic and geopolitical considerations ...
Xuya Lv, Yingwen Zhong, Geyi Fu, Yuehong Wu, Xuewei Xu   +4 more
doaj   +1 more source

Nano-mineralogy and growth environment of Fe-Mn polymetallic crusts and nodules from the South China Sea

Frontiers in Marine Science, 2023
Fe-Mn polymetallic crusts and nodules from the South China Sea (SCS) consist of submarine ferromanganese (Fe-Mn) oxide precipitates, and represent important marine mineral resource with substantial economic and scientific research value. Previous studies
Yingzhi Ren, Yingzhi Ren, Yao Guan, Yao Guan, Xiaoming Sun, Li Xu, Zhenglian Xiao, Yuqi Deng, Wentao He   +8 more
doaj   +1 more source

Simultaneous Leaching of Seafloor Massive Sulfides and Polymetallic Nodules [PDF]

Minerals, 2019
Simultaneous leaching of seafloor massive sulfides (SMS) from Loki’s Castle on the Arctic Mid-Ocean Ridge (AMOR) and polymetallic nodules (PN) from Clarion Clipperton Zone (CCZ) of the Central Pacific Ocean was studied. Leaching tests were conducted using sulfuric acid and sodium chloride, at a temperature of 80 °C for 48 h under reflux.
Przemyslaw Kowalczuk, Hassan Bouzahzah, Rolf Kleiv, Kurt Aasly   +3 more
openaire   +2 more sources

Polymetallic Nodule Resource Assessment of Seabed Photography Based on Denoising Diffusion Probabilistic Models

Journal of Marine Science and Engineering, 2023
Polymetallic nodules, found abundantly in deep-ocean deposits, possess significant economic value and represent a valuable resource due to their high metal enrichment, crucial for the high-tech industry.
Mingyue Shao, Wei Song, Xiaobing Zhao
doaj   +1 more source

Near-Field Analysis of Turbidity Flows Generated by Polymetallic Nodule Mining Tools

Mining, 2021
The interest in polymetallic nodule mining has considerably increased in the last few decades. This has been largely driven by population growth and the need to move towards a green future, which requires strategic raw materials. Deep-Sea Mining (DSM) is
Mohamed Elerian, Said Alhaddad, Rudy Helmons, Cees van Rhee   +3 more
doaj   +1 more source

Are seamounts refuge areas for fauna from polymetallic nodule fields? [PDF]

Biogeosciences, 2020
Seamounts are abundant and prominent features on the deep-sea floor and intersperse with the nodule fields of the Clarion-Clipperton Fracture Zone (CCZ).
D. Cuvelier, P. A. Ribeiro, P. A. Ribeiro, S. P. Ramalho, S. P. Ramalho, D. Kersken, D. Kersken, P. Martinez Arbizu, A. Colaço   +8 more
doaj   +1 more source

Slurry electrolysis of ocean polymetallic nodule

Transactions of Nonferrous Metals Society of China, 2010
Abstract The ocean poly-metallic nodule was leached by using slurry electrolysis process in HCl-NaCl medium. The leaching rates of Mn, Co, Cu and Ni in the ocean poly-metallic nodule are all above 97%. Meanwhile, the high purity of electrolytic MnO 2 is also obtained as an anode product.
Cheng-yan WANG, Ding-fan QIU, Fei YIN, Han-yuan WANG, Yong-qiang CHEN   +4 more
openaire   +1 more source

Meiofauna in a Potential Deep-Sea Mining Area—Influence of Temporal and Spatial Variability on Small-Scale Abundance Models

Diversity, 2020
In large areas of the Clarion Clipperton Fracture Zone (northeast Pacific), exploration of deep-sea polymetallic nodules as a potential source of high-technology metals is ongoing. Deep-sea mining may have a severe impact on the benthic communities. Here,
Katja Uhlenkott, Annemiek Vink, Thomas Kuhn, Benjamin Gillard, Pedro Martínez Arbizu   +4 more
doaj   +1 more source

Larval assemblages over the abyssal plain in the Pacific are highly diverse and spatially patchy [PDF]

PeerJ, 2019
Abyssal plains are among the most biodiverse yet least explored marine ecosystems on our planet, and they are increasingly threatened by human impacts, including future deep seafloor mining.
Oliver Kersten, Eric W. Vetter, Michelle J. Jungbluth, Craig R. Smith, Erica Goetze   +4 more
doaj   +2 more sources

Anomalous oxygen concentration increases in benthic experiments from the Clarion Clipperton Zone are not related to polymetallic nodules [version 1; peer review: 2 approved, 1 not approved]

F1000Research
* Background Polymetallic nodules in the deep sea of the Clarion Clipperton zone (CCZ) have been implicated in the abiotic production of oxygen during benthic chamber respirometer experiments.
Alexander P. Webber, Patrick Downes, Joaquim Bento, Leigh Marsh, Felipe S. Freitas, Michael Clarke   +5 more
doaj   +1 more source