Results 111 to 120 of about 446 (170)

Complex deep-sea expeditions try to size up seabed mining impacts. [PDF]

Proc Natl Acad Sci U S A
Gilbert N.
europepmc   +1 more source

The false promise of deep-sea mining. [PDF]

NPJ Ocean Sustain
Alger J, Green JF, Neville KJ, Park S, VanDeveer SD, Webster DG.   +5 more
europepmc   +1 more source

The Mediterranean Offshore Wind Turn: Lessons, Risks, and Regional Reflections. [PDF]

Open Res Eur
Avesani M.
europepmc   +1 more source

Deep-sea mining: Superficial riches, deep hidden costs

Sumaila UR, Alam L, Pradhoshini K, Flint R, Singh P, Billon PL, Mosnier F, Amon D, Abdallah P, Aheto D, Alger J, Anna Z, Barnes C, Fritsch D, Giron A, Gjerde K, Hilmi N, Karuaihe S, Levin L, Mohammed, Sukhdev P, Tudhope A, Thiele T, Villasante S, Wilson M.   +24 more
europepmc   +1 more source

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

Minerals (Basel, Switzerland), 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.
Kurt Aasly, Przemyslaw B Kowalczuk, Rolf Arne Kleiv   +2 more
exaly   +3 more sources

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Electrobioleaching of polymetallic ocean nodules

Hydrometallurgy, 2001
Abstract In this paper, a novel electrobioleaching process for recovering valuable non-ferrous metals from ocean nodules is described. The key for successful and efficient dissolution of copper, nickel and cobalt from ocean nodules depends on prior reduction of the manganese and ferric oxides with which the above valuable non-ferrous metals are ...
Kumari, Abha, Natarajan, KA
openaire   +1 more source

India's Programme on Polymetallic Nodules

Offshore Technology Conference, 1990
Abstract This article is a review of India's programme aimed at developing deep sea manganese nodules on a commercial basis. A brief history of the programme is followed by an outline of current work in the areas of survey and exploration, deep-sea mining technologies, extractive metallurgy and environmental studies.
J. Yates, K.R. Gupta
openaire   +1 more source

Mössbauer and ESR Studies of Polymetallic Nodules

physica status solidi (a), 1990
Ces spectres Mossbauer, enregistres a la temperature de l'azote liquide et a temperature ambiante, sont constitues de larges doublets symetriques bien resolus. On montre que deux doublets se chevauchent. Le doublet interieur correspond a Fe 3+ au site tetrahedrique, le doublet exterieur a Fe 3+ au site ...
S. Swami, V. K. Agarwal, S. S. Sharma, J. Varma   +3 more
openaire   +1 more source

Exploration for polymetallic nodules in the Indian ocean

Ocean Development & International Law, 1988
Abstract A study of polymetallic nodules in the Indian Ocean taken up as an R & D Project has been extended into an exploratory programme for nodule resources. Recognition of India as a Pioneer Investor by the UNCLOS led to the acceleration of the programme to meet time targets. Planning and coordination ensured accuracy and success of the programme by
H.N. Siddiquie, P.S. Rao
openaire   +1 more source

Tubotomaculum: a bacterially-mediated polymetallic nodule

2019
Since the 50s of the last century, several authors have investigated the nature of Tubotomaculum: enigmatic Mn-Fe mineralizations occurring in the latest Oligocene – Early Miocene varicoloured clays of the western Mediterranean area. Some authors regarded these structures as fossil traces[1], as fossil corals covered by Fe-oxides and manganite[2], or ...
S. Bernardini, A. Abbassi, F. Bellatreccia, P. Cipollari, D. Cosentino, M. del Gallo, E. Mugnaioli, A. Sodo, M. N. Zaghloul   +8 more
openaire   +7 more sources