Temat: column bioleaching - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Surface properties of neutral components in copper column bioleaching of black shale samples
Autorzy:: Sadowski, Z.
Baranska, J.
Pawlowska, A.
Powiązania:: https://bibliotekanauki.pl/articles/110261.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: adhesion
surface energy
glass beads
biohydrometallurgy
column bioleaching
bacteria cell
polyethylene pellets
Opis:: The behaviour of glass beads and polyethylene pellets as the extra bacteria support in the fine black shale ore in the column bed bioreactor was compared. Capillary rise experiments enabled the calculation of the contact angle and the surface free energy of glass beads and polyethylene pellets. The results showed that the support material made up of polyethylene pellets yielded a higher copper extraction, which could be explained by conditions favourable to cell adhesion on the polyethylene surface.
Źródło:: Physicochemical Problems of Mineral Processing; 2018, 54, 4; 1146-1151
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A comparison of uranium recovery from low-grade ore by bioleaching and acid leaching
Autorzy:: Szolucha, M. M.
Chmielewski, A. G.
Powiązania:: https://bibliotekanauki.pl/articles/109808.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: bioleaching
acid leaching
column leaching
low-grade ore
uranium
recovery
shrinking core model
Opis:: The objective of this work was to compare the bioleaching with the acid leaching of uranium under similar process conditions within 65 days. The low-grade uranium ore used in the experiments was collected from Radoniow’s ‘small’ dump, Poland. Bioleaching and acid leaching studies were carried out in identical columns. The isolated bacterial consortium from the Radoniow’s mine was used for the bioleaching process. A solution of sulphuric acid and H2O2 as oxidizing agent was used for the acid leaching. The extraction of uranium under acid leaching conditions reached maximum of 64±13 % w/w after 31 days. The bioleaching of uranium achieved a maximum extraction of 75±15 % w/w after 55 days. In this study an attempt was made to demonstrate the relationship between the shrinking-core model and the experimental data by plotting the fractional conversion of uranium against time.
Źródło:: Physicochemical Problems of Mineral Processing; 2017, 53, 1; 136-149
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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