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manganese nodule action

manganese nodule action

Bacteriology of Manganese Nodules: I. Bacterial Action on ...

Bacteriology of Manganese Nodules: I. Bacterial Action on Manganese in Nodule Enrichments Appl Microbiol. 1963 Jan;11(1):15-9. Author H L Ehrlich 1 Affiliation 1 Department of Biology, Rensselaer Polytechnic Institute, Troy, New York. PMID: 16349626 PMCID ...

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Bacteriology of Manganese Nodules: I. Bacterial Action on ...

1963-1-1  Abstract. Bacteria, found in manganese nodules from the Atlantic Ocean, enhance the adsorption of Mn ++ from sea water by crushed manganese nodules in the presence of peptone. When bacterial outgrowth from crushed manganese nodules was experimentally delayed, peptone did not enhance Mn ++ adsorption by nodular substance, but hindered it in some cases. A mechanism to

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Bacteriology of Manganese Nodules

Abstract. A cell-free extract from Arthrobacter 37, isolated from a manganese nodule from the Atlantic Ocean, exhibited enzymatic activity which accelerated manganese accretion to synthetic Mn-Fe oxide as well as to crushed manganese nodule. The reaction required oxygen and was inhibited by HgCl 2 and p-chloromercuribenzoate but not by Atebrine dihydrochloride.

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Composition, Formation, and Occurrence of Polymetallic

2017-3-29  Ehrlich HL (1963) Bacteriology of manganese nodules: I. Bacterial action on manganese in nodules enrichments. Appl Microbiol 11:15–19 Google Scholar Ehrlich HL (1972) Response of some activities of ferromanganese nodule bacteria to hydrostatic pressure.

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Minerals Free Full-Text Manganese Nodules in Chile, an ...

Manganese nodules—the known reserves within Chile are as follows: Robinson Crusoe Island, at 3820 m depth, with a nodule concentration of 4–5 kg/m 2, with a combined Ni + Co + Cu grade of 0.87%. At the mouth of the Rio Loa, 4332 m deep, there are fields with a Cu + Ni content of 1.38% (Site 7 of Table 2 ).

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Observations of bacterial microcolonies on the surface of ...

Bacterial action on manganese in nodule enrichments.Appl. Microbiol. 11: 15–19. Google Scholar 6. Ehrlich, H.L. 1972. The role of microbes in manganese nodule genesis and degradation.In: Ferromanganese Deposits on the Ocean Floor. D.R. Horn, editor, pp. 63–70. The Office of the Integational Decade of Ocean Exploration.

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(PDF) Ferromanganese nodules from the Devonian of the ...

A black "halo" is developed around the nodule, replacing the sediment, and illustrates the diagenetic mobility of iron and manganese. Lower Famennian. Combe D'Izarne, Montagne Noire, S. France.

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MARINE GEOCHEMISTRY 1. CHEMICAL

A chemical study of these nodules would present direct evidence of scaveng-ing action if the iron and manganese of these nodules originated from the sus-pended matter of sea water. Hence nod-ules collected from 11 locations in the eastern Pacific Ocean were subjected to chemical assay for the following ele-ments: manganese, nickel, cobalt, cop-

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东太平洋多金属结核区两个站位深海沉积物细菌多样性 - CNKI

action on manganese in nodule enrichments.Applied Microbiology,1963,11(1):15-19. [5]Xiao XQ,Guo SQ.Electron microscopic investigation on manganese minerals in the multi-metallic nodules from the Middle Pacific Ocean.Acta Geologica Sinica ...

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Manganese Transformations by Marine Bacillus Species ...

Abstract. A wide variety of micro-organisms promote the oxidation or reduction of manganese, through indirect or direct mechanisms. An example of the latter category is Bacillus SGI, a marine organism isolated from a near-shore manganese sediment.Its mature dormant spores catalyze the oxidation of Mn 2+ to Mn 4+.The process requires molecular oxygen and is catalyzed by a spore coat component.

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Bacteriology of Manganese Nodules: I. Bacterial Action on ...

Abstract. Bacteria, found in manganese nodules from the Atlantic Ocean, enhance the adsorption of Mn ++ from sea water by crushed manganese nodules in the presence of peptone. When bacterial outgrowth from crushed manganese nodules was experimentally delayed, peptone did not enhance Mn ++ adsorption by nodular substance, but hindered it in some cases. A mechanism to explain the role of ...

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(PDF) The Origin of Manganese Nodules: A Combined

Manganese accumulation by the Goldberg and Arrhenius theory would be a relatively slow and comparatively steady process, whereas Bonatti and Nayudu3 believe manganese nodule

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Bacteriology of Manganese Nodules

Abstract. A cell-free extract from Arthrobacter 37, isolated from a manganese nodule from the Atlantic Ocean, exhibited enzymatic activity which accelerated manganese accretion to synthetic Mn-Fe oxide as well as to crushed manganese nodule. The reaction required oxygen and was inhibited by HgCl 2 and p-chloromercuribenzoate but not by Atebrine dihydrochloride.

Read More
The Origin of Manganese Nodules: A Combined Theory

2012-8-14  volcanism, to form manganese nodules. The argument presented is a modification of one proposed by Goldberg and Arrhenius in 1958. Manganese is present in seawater in divalent form and is oxidized to tetravalent form under a catalytic action of iron hydroxides (Goldberg and Arrhenius, 1958) and ferromanganiferous complexes (Krauskopf, 1957). The ...

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Rates of Accumulation of Ferro-manganese Nodules Nature

Manganese accumulation by the Goldberg and Arrhenius theory would be a relatively slow and comparatively steady process, whereas Bonatti and Nayudu 3

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Distribution of manganese nodules and lebensspuren in ...

2018-6-29  manganese nodules in the two photographic stations 6254 and 6267 taken during the course of the 1967 R.R.S. Discovery Indian Ocean Expedition. Reference to the photographic data from stations 5127, 5128, 5132, and ... Although the principal feeding action of the holothurian is known to be the grinding down of sand particles in the gut (Moore ...

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MARINE GEOCHEMISTRY 1. CHEMICAL

A chemical study of these nodules would present direct evidence of scaveng-ing action if the iron and manganese of these nodules originated from the sus-pended matter of sea water. Hence nod-ules collected from 11 locations in the eastern Pacific Ocean were subjected to chemical assay for the following ele-ments: manganese, nickel, cobalt, cop-

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Manganese Ion - an overview ScienceDirect Topics

Removal efficiency of chloride, manganese, and ferric ions increase from 56% to 97%, 60% to 97%, and 62% to 97.6%, respectively, as the cross-flow rate varies from 300 to 750 L/hr. Cross-flow rate plays a significant role in reducing concentration polarization by virtue of its sweeping action on the surface of the membrane preventing fouling of ...

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manganese processing Britannica

2021-11-26  manganese processing, preparation of the ore for use in various products.. Manganese (Mn) is a hard, silvery white metal with a melting point of 1,244 °C (2,271 °F). Ordinarily too brittle to be of structural value itself, it is an essential agent in

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Manganese - Uses, Physical and Chemical Properties of ...

2021-11-22  Manganese is used to produce a variety of important alloys and to deoxidize steel and desulfurize. It is also used in dry cell batteries. Manganese is used as a black-brown pigment in paint. It is an essential trace element for living creatures. It is mainly

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(PDF) The Origin of Manganese Nodules: A Combined

Manganese accumulation by the Goldberg and Arrhenius theory would be a relatively slow and comparatively steady process, whereas Bonatti and Nayudu3 believe manganese nodule

Read More
The Origin of Manganese Nodules: A Combined Theory

2012-8-14  volcanism, to form manganese nodules. The argument presented is a modification of one proposed by Goldberg and Arrhenius in 1958. Manganese is present in seawater in divalent form and is oxidized to tetravalent form under a catalytic action of iron hydroxides (Goldberg and Arrhenius, 1958) and ferromanganiferous complexes (Krauskopf, 1957). The ...

Read More
Rates of Accumulation of Ferro-manganese Nodules Nature

Manganese accumulation by the Goldberg and Arrhenius theory would be a relatively slow and comparatively steady process, whereas Bonatti and Nayudu 3

Read More
Distribution of manganese nodules and lebensspuren in ...

2018-6-29  manganese nodules in the two photographic stations 6254 and 6267 taken during the course of the 1967 R.R.S. Discovery Indian Ocean Expedition. Reference to the photographic data from stations 5127, 5128, 5132, and ... Although the principal feeding action of the holothurian is known to be the grinding down of sand particles in the gut (Moore ...

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Riley and Sinhaseni: Composition of Manganese Nodules

2015-11-1  Three manganese nodules from the Pacific Ocean have been analysed for 35 elements by using mainly spectrophotometric and spectrographic methods. Cu, Co, Ni, Zn, and Pb were found in amounts approaching 1 °/0, which far exceeds ... by oxygen under the

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William Mary Law Review

2020-6-29  as with every action man undertakes, the mining of manganese nodules will have some effect on the oceans' environment. At present there is no formal regulatory process that must be satis- ... manganese nodule mining have determined that processing will occur. 11. Frank, supra note 10, at 815, 817-18. 12. OCEAN MANGANESE . NODULES, supra . note ...

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MARINE GEOCHEMISTRY 1. CHEMICAL

A chemical study of these nodules would present direct evidence of scaveng-ing action if the iron and manganese of these nodules originated from the sus-pended matter of sea water. Hence nod-ules collected from 11 locations in the eastern Pacific Ocean were subjected to chemical assay for the following ele-ments: manganese, nickel, cobalt, cop-

Read More
Nodules of Hydrothermal Birnessite in the Caldera of a ...

Manganese nodules made of radiating rods of well crystallized birnessite were sampled at 80 481.2'N, 1030 53.8'W, 1875 m below sea level by a dredge that also collected hyaloclastite and basaltic talus. The nodule field is on the floor of a caldera within a young tholeiitic seamount and was discovered and photo-graphed during a deep-two survey.

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Mechanochemical modification of electrolytic manganese ...

2021-11-16  1. Introduction. Electrolytic manganese residue (EMR) is the filter press residue discharged from rhodochrosite (MnCO 3) after leaching with concentrated sulfuric acid, neutralizing and removing impurities by ammonia water in the process of electrolytic manganese (Deng et al., 2021; Lan et al., 2021b).Of course, pyrolusite is also used as raw material to extract manganese in industry, and THIS ...

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manganese processing Britannica

2021-11-26  manganese processing, preparation of the ore for use in various products.. Manganese (Mn) is a hard, silvery white metal with a melting point of 1,244 °C (2,271 °F). Ordinarily too brittle to be of structural value itself, it is an essential agent in

Read More