Results 1 to 10 of about 91,473 (196)

Size Reduction of CCZ Polymetallic Nodules Under Repeated Impact Fragmentation

Results in Engineering, 2020
Polymetallic nodules provide an alternative source of valuable metals. Nodules from the seabed of the Clarion Clipperton Zone (CCZ), a prospective mining area, are typically abundant at depths of around 5 ​km. Mining these nodules comprises excavation or
Edwin de Hoog
exaly   +4 more sources

Alpha radiation from polymetallic nodules and potential health risks from deep-sea mining [PDF]

Scientific Reports, 2023
In search for critical elements, polymetallic nodules at the deep abyssal seafloor are targeted for mining operations. Nodules efficiently scavenge and retain several naturally occurring uranium-series radioisotopes, which predominantly emit alpha ...
Jessica B. Volz, Walter Geibert, Dennis Köhler, Michiel M. Rutgers van der Loeff, Sabine Kasten   +4 more
doaj   +3 more sources

Bacterial Contributions to the Formation of Polymetallic Nodules in the Pacific Ocean [PDF]

Frontiers in Marine Science
Polymetallic nodules, widely distributed in the deep seafloor of the Pacific Ocean, are characterized by their abundance of diverse metal elements and considerable economic value. Previous studies have suggested a partial biogenic origin of these nodules.
Yanhui Dong, Zhenggang Li, Li Huaiming
exaly   +4 more sources

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

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   +2 more sources

Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules

European Journal of Taxonomy, 2021
A new species of abyssal Neanthes Kinberg, 1865, N. goodayi sp. nov., is described from the Clarion-Clipperton Zone in the central Pacific Ocean, a region targeted for seabed mineral exploration for polymetallic nodules.
Regan Drennan, Helena Wiklund, Muriel Rabone, Magdalena N. Georgieva, Thomas G. Dahlgren, Adrian G. Glover   +5 more
doaj   +2 more sources

Heterogeneous Marine Environments Diversify Microbial-Driven Polymetallic Nodule Formation in the South China Sea

Frontiers in Marine Science
Most studies on the genesis of polymetallic nodules suggested that nodules in the South China Sea (SCS) are hydrogenetic; however, the complexity and the heterogeneity in hydrology and geochemistry of the SCS might cause different processes of nodule ...
Chenghao Yang, Xiaogu Wang, Chun-Sheng Wang   +2 more
exaly   +3 more sources

Studies on Analysis Conditions of Specific Surface Area of Polymetallic Nodules

Yankuang ceshi, 2021
BACKGROUND Polymetallic nodules are predominant in deep sea sedimentary mineral resources due to the enrichment of many critical metals. Polymetallic nodules are loose and porous, which is the critical material feature that contributes the adsorption of ...
LI Hao-nan, REN Xiang-wen, SONG Zhao-jun, LI Huai-ming, WANG Wen-yu   +4 more
doaj   +1 more source

Simulation and Experimental Study of Degradation of Polymetallic Nodules in Deep-Sea Multi-Stage Lifting Motor Pump

Journal of Marine Science and Engineering, 2022
The impeller blades will continually strike the slurry mixture inside the pump, causing deterioration and a change in particle size. In this study, the degradation of mineral particles under various cycle times, rotational speeds, and flow rates is ...
Yan Li, Ziyuan Li, Kesen Liang
doaj   +1 more source

The seabed - an important mineral resource of Slovakia in the future [PDF]

Acta Montanistica Slovaca, 2015
In 1987, Slovakia bought part of the ocean bottom with the occurrence of mineral resources future - polymetallic nodules. The polymetallic nodule is a geological term for naming natural features consisting of more than 40 metals and other chemical ...
Peter Blišťan, Branislav Kršák, Monika Blišťanová, Vojtech Ferencz   +3 more
doaj   +1 more source

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