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Mostrando ítems 31-38 de 38
Artículo
The BRISA process as a path for efficient copper recovery from waste PCBs
(Elsevier, 2021)
In the present work, a two-stage biohydrometallurgical process for copper extraction from waste PCBs is developed. The main goal of this study is to check whether to separate the chemical leaching of copper with ferric ...
Artículo
Oxygen transfer in ferric iron biological production in a packed-bed reactor
(Elsevier, 2002-07)
In this paper, oxygen transfer in the ferrous iron biooxidation process in a packed-bed reactor is studied. The reactor consists of a polymethyl methacrylate column randomly packed with siliceous stone particles with inlets ...
Artículo
Copper recovery from unground printed circuit board by biogenic ferric at high solid/liquid ratio
(Elsevier, 2022)
In this work, the recovery of Cu from large waste printed circuit board (PCB) pieces by biogenic ferric sulphate at high solid to liquid ratio was studied. PCB parts were packed in a column and biogenic ferric was constantly ...
Tesis Doctoral
Artículo
Influence of zinc on ferrous iron bio-oxidation: Biological or physical nature?
(Elsevier, 2010-07-15)
Ferrous iron bio-oxidation is negatively affected by the presence of heavy metals. Although the available information relates this phenomenon to purely biological aspects, it is contradictory with respect to tolerance ...
Tesis Doctoral
La oxidación biológica en continuo del ion ferroso en reactores de película bacteriana soportada
(1992-10-06)
Los drenajes ácidos de las minas de carbón y de sulfuros metálicos, constituyen un importante foco de contaminación, donde el principal agente contaminante es el ion ferroso disuelto. A lo largo del tiempo este Fe(II) es ...
Artículo
Biorecovery of copper from converter slags: Slags characterization and exploratory ferric leaching tests
(HYDRD, 2009-06)
This paper studies the ferric sulphate leaching of converter slag (9% Cu) in order to recover Cu through a process in which bacteria regenerate the leaching agent. For this purpose, the effect of variables such as pulp ...
Artículo
A new thiosalt depuration bioprocess for water- recycling in metallic sulphide mineral processing
(Elsevier, 2019-11)
Economic and environmental imperatives force the metallic sulphide processing industry to re-use liquors that normally contain thiosalts; this processing entails difficulties in operation control and losses in metal-extraction ...