Results 21 to 30 of about 446 (170)

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

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

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

Spatial Variability of Abyssal Nitrifying Microbes in the North-Eastern Clarion-Clipperton Zone

Frontiers in Marine Science, 2021
Abyssal microbes drive biogeochemical cycles, regulate fluxes of energy and contribute to organic carbon production and remineralization. Therefore, characterizing the spatial variability of benthic microbes is important for understanding their roles in ...
Anita L. Hollingsworth, Anita L. Hollingsworth, Daniel O. B. Jones, C. Robert Young   +3 more
doaj   +1 more source

From the Surface to the Deep-Sea: Bacterial Distributions across Polymetallic Nodule Fields in the Clarion-Clipperton Zone of the Pacific Ocean

Frontiers in Microbiology, 2017
Marine bacteria regulate fluxes of matter and energy essential for pelagic and benthic organisms and may also be involved in the formation and maintenance of commercially valuable abyssal polymetallic nodules.
Markus V. Lindh, Brianne M. Maillot, Christine N. Shulse, Andrew J. Gooday, Diva J. Amon, Craig R. Smith, Matthew J. Church, Matthew J. Church   +7 more
doaj   +1 more source

Overview of Physical Characteristics of Deep-sea Polymetallic Nodules and the Effects on Mining and Transportation Processes

Haiyang Kaifa yu guanli, 2023
This study aimed at determining the physical characteristics of deep-sea polymetallic nodules and analyzing their influence on the mining and transportation process, so as to guide engineering applications.
Huakun WANG, Jing GAO, Yang YU, Zhenzhou SUN, Xiubo LI   +4 more
doaj  

Process Mineralogy of Mud Fraction in Deep Sea Rare Earth

Kuangchan zonghe liyong, 2023
This is an essay in the field of process mineralogy. Deep sea rare earths are the fourth deep-sea mineral resource after polymetallic nodules, cobalt rich crusts and polymetallic sulphides.
Xiaoyu Li, Wenliang Xiong, Lei Lu, Miao Yu, Fenlian Wang, Da Chen   +5 more
doaj   +1 more source

The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) [PDF]

Biogeosciences, 2020
Industrial-scale mining of deep-sea polymetallic nodules will remove nodules in large areas of the sea floor. The regrowth of the nodules by metal precipitation is estimated to take millions of years. Thus, for future mining impact studies, it is crucial
M. Molari, F. Janssen, F. Janssen, T. R. Vonnahme, T. R. Vonnahme, F. Wenzhöfer, F. Wenzhöfer, A. Boetius, A. Boetius   +8 more
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Biological responses to disturbance from simulated deep-sea polymetallic nodule mining. [PDF]

PLoS ONE, 2017
Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was
Daniel O B Jones, Stefanie Kaiser, Andrew K Sweetman, Craig R Smith, Lenaick Menot, Annemiek Vink, Dwight Trueblood, Jens Greinert, David S M Billett, Pedro Martinez Arbizu, Teresa Radziejewska, Ravail Singh, Baban Ingole, Tanja Stratmann, Erik Simon-Lledó, Jennifer M Durden, Malcolm R Clark   +16 more
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Potential Short-Term Effects of Mine Tailings on Phytoplankton Assemblages in the Open Ocean

Journal of Marine Science and Engineering, 2022
The disposal of mine tailings into the marine environment is considered an essential option to secure the economic efficiency of deep-sea mining, but it might adversely affects the ecosystem.
Dong Han Choi, Jangyeon Yoo, Wonseok Yang, Jae Hoon Noh, Yeonjung Lee, Kongtae Ra, Kiseong Hyeong, Chan Min Yoo, Jisoo Park   +8 more
doaj   +1 more source