Results 21 to 30 of about 391 (168)

Different Ferromanganese Concretion Morphologies Host Distinct Microbial Communities and Metal Accumulation Patterns in the Baltic Sea. [PDF]

Environ Microbiol
We investigated how microbes influence the metal accumulation and release in Fe‐Mn concretions from the Gulf of Finland using microcosm incubation experiments. We studied three main concretion morphotypes: crust, discoidal, and spheroidal. Microbes enhanced metal accumulation in discoidal and spheroidal morphotypes.
Majamäki R, Wasiljeff J, Purkamo L, Hultman J, Kohl L, Asmala E, Yli-Hemminki P, Jørgensen KS, Muurinen J, Virtasalo JJ.   +9 more
europepmc   +2 more sources

Degradation of Polymetallic Nodules in Deep-Sea Multi-Stage Lifting Motor Pump [PDF]

Minerals, 2021
The polymetallic nodules in the deep-sea multi-stage lifting motor pump will undergo repeated impeller blade impact and fragmentation, which will change the particle size, thereby affecting the number of ores that can be recovered on the surface and the design parameters of the processing equipment.
Yan Li, Kesen Liang, Huan Dai, Chi Zhang
openaire   +1 more source

Complete mitochondrial genome of the abyssal coral Abyssoprimnoa gemina Cairns, 2015 (Octocorallia, Primnoidae) from the Clarion-Clipperton Zone, Pacific Ocean [PDF]

ZooKeys, 2023
The Clarion-Clipperton Zone (CCZ) in the tropical East Pacific is a region of interest for deep-sea mining due to its underwater deposits of polymetallic nodules containing economically important metals such as nickel, copper, and cobalt.
Romain Gastineau, Przemysław Dąbek, Kamila Mianowicz, Valcana Stoyanova, Artur Krawcewicz, Tomasz Abramowski   +5 more
doaj   +3 more sources

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

Key Seabed Collection Technologies for Commercial Exploitation of Deep-Sea Polymetallic Nodules: Advances and Prospects [PDF]

中国工程科学
Driven by the carbon peaking and carbon neutrality goals as well as the accelerated development of new quality productive forces, the supply-demand tension of critical metals has become increasingly pronounced. As a strategic successor resource, deep-sea
Lubao Luan, Xixi Liu, Xiaodong Niu, Yipeng Xie, Xuelin Liu, Xuguang Chen, Huajun Li   +6 more
doaj   +1 more source

Does the International Community Have Efforts to Protect the Marine Environment from Seabed Mining?

Sriwijaya Law Review, 2021
Through the United Nations, the international community is seriously paying attention to the use of seabed areas as regulated by the Law of the Sea Convention 1982, which states that the area and its resources are the common heritage of humankind.
Idris Idris, Taufik Rachmat Nugraha
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  

Multi-Omic Assessment of Microbial Communities and Their Polyketide Biosynthetic Potential Across Abyssal Sediments. [PDF]

Environ Microbiol
Abyssal sediments were assessed for taxonomic diversity and polyketide biosynthetic potential and compared to metagenomic and metabolomic assessments of the same sediments. Biodiversity differences were documented across biogeochemical regimes with the results providing baseline awareness of what might be lost should deep‐sea microbiomes be disrupted ...
Singh HW, Gutleben J, Bogdanov A, Chase AB, Demko A, Podell S, Haley B, Jensen PR.   +7 more
europepmc   +2 more sources

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

Deep-sea polymetallic nodules as opportunity for future supply with critical raw materials

Review of the Bulgarian Geological Society, 2021
The renewed importance of polymetallic nodules in the context of forecasted increasing demands for metals are discussed. Based on the Interoceanmetal Joint Organization’s (IOM) site-specific data obtained during the exploration activity in the Clarion-Clipperton Fracture Zone, a total of 272.5 Mt of nodules were estimated as economically reasonable for
Valcana Stoyanova, Atanas Hikov, Elitsa Stefanova, Zlatka Milakovska, Tomasz Abramowski, Irena Peytcheva, Silvia Chavdarova, Milen Stavrev   +7 more
openaire   +1 more source