Kinetics of sulfation of atlantic ocean manganese nodules

1973 ◽  
Vol 4 (4) ◽  
pp. 941-947 ◽  
Author(s):  
M. C. Hecke ◽  
R. W. Bartlett
Keyword(s):  
Atlantic Ocean ◽  
Manganese Nodules ◽  
Kinetics Of

scholarly journals Leaching of Pure Chalcocite with Reject Brine and MnO2 from Manganese Nodules

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1426
Author(s):  
David Torres ◽  
Emilio Trigueros ◽  
Pedro Robles ◽  
Williams H. Leiva ◽  
Ricardo I. Jeldres ◽  
...  
Keyword(s):  
Sea Water ◽  
Chloride Content ◽  
Manganese Nodules ◽  
H2so4 Concentration ◽  
High Concentrations ◽  
Kinetics Of Dissolution ◽  
Desalination Plants ◽  
Short Time ◽  
Kinetics Of ◽  
High Chloride

Chalcocite (Cu2S) has the fastest kinetics of dissolution of Cu in chlorinated media of all copper sulfide minerals. Chalcocite has been identified as having economic interest due to its abundance, although the water necessary for its dissolution is scarce in many regions. In this work, the replacement of fresh water by sea water or by reject brine with high chloride content from desalination plants is analyzed. Additionally, the effect of adding MnO2 from available manganese nodules in vast quantities at the bottom of the sea is studied. Reject brine shows better results than sea water, and the addition of MnO2 to the brine significantly increases the kinetics of chalcocite dissolution in a short time. H2SO4 concentration is found to be irrelevant when working at high concentrations of chloride and MnO2. The best results, 71% Cu extractions in 48 h, are obtained for reject brine, 100 mg of MnO2 per 200 g of mineral and H2SO4 0.5 mol/L. The results are expected to contribute to a sustainable process of dissolution of chalcocite by using the reject brine from desalination plants.

scholarly journals Kinetics of leaching of manganese nodules with sulfuric acid.

1990 ◽  
Vol 106 (10) ◽  
pp. 617-620 ◽  
Author(s):  
Masayasu KAWAHARA ◽  
Toshiharu MITSUO
Keyword(s):  
Sulfuric Acid ◽  
Manganese Nodules ◽  
Kinetics Of

scholarly journals Role of Glycerol Oxidation Pathways in the Reductive Acid Leaching Kinetics of Manganese Nodules Using Glycerol

ACS Omega ◽  
2021 ◽  
Author(s):  
Aishvarya Venkataseetharaman ◽  
Geetanjali Mishra ◽  
Malay Kumar Ghosh ◽  
Goutam Kumar Das
Keyword(s):  
Acid Leaching ◽  
Glycerol Oxidation ◽  
Leaching Kinetics ◽  
Manganese Nodules ◽  
Kinetics Of

Removal of SO2from the marine boundary layer over the Atlantic Ocean: A case study on the kinetics of the heterogeneous S(IV) oxidation on marine aerosols

2000 ◽  
Vol 105 (D11) ◽  
pp. 14413-14422 ◽  
Author(s):  
Udo Krischke ◽  
Regina Staubes ◽  
Theo Brauers ◽  
Michael Gautrois ◽  
Jan Burkert ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Atlantic Ocean ◽  
Marine Boundary Layer ◽  
Marine Aerosols ◽  
Kinetics Of
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