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GCSE Chemistry Notes: Extraction-purification of copper, phytomining & bioleaching
4. The extraction of copper from copper ores & purification by electrolysis Also, phytomining and bioleaching e.g. of low grade copper ores Doc Brown's GCSE/IGCSE O Level KS4 science CHEMISTRY Revision Notes on extracting and purifying copper Mining of Minerals and Methods of Extracting of Metals How do we extract copper from its copper carbonate or copper sulphide ores? What are the raw materials for extracting copper? How do we purify impure copper obtained from smelting copper mineral ores? The chemistry of carbon reduction of copper oxides, sulfides or carbonates are described. How can we purify copper by electrolysis? The electrolytic purification of the impure copper is described with the electrode equations. How copper can be extracted from ores by phytomining (phytoextraction) and bioleaching using 'rock eating' bacteria! Scroll down for revision notes on extraction procedures and theory which should prove useful for school/college assignments/projects on ways of extracting metals from their ores. Note: sulphide is now spelt sulfide, sulphate is now sulfate and sulphur is now sulfur Equation note: The equations are often written three times: (i) word equation, (ii) balanced symbol equation without state symbols, and, (iii) with the state symbols (g), (l), (s) or (aq) to give the complete balanced symbol equation. These revision notes on the extraction of copper and the electrolytic refining of copper, should prove useful for the new AQA, Edexcel and OCR GCSE (9–1) chemistry science courses.
Metal extraction index
For more on the reactivity series of metals and oxidation-reduction (redox) reaction see
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A summary diagram of important ideas to do with the reactivity series of metals!
4a. The extraction of copper from copper ores |
TOP OF PAGE and metal extraction index 4b. The future for copper mining and other sources of metals? How is copper extracted by phytomining and bioleaching?
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4C. Purification of Copper by Electrolysis (extraction from ore above) |
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Raw materials for the electrolysis process:
Electrolysis is using d.c. electrical energy to bring about chemical changes at the electrolyte connections called the anode and cathode electrodes. An electrolyte is a conducting melt or solution of ions which carry the electric charge as part of the circuit. Scrap copper can be recycled and purified this way too ,and is cheaper than starting from copper ore AND saves valuable mineral resources. |
The redox details of the electrode processes:
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Concept diagram for the purification of copper by electrolysis of copper salts solution with copper electrodes
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ELECTROCHEMISTRY INDEX: 1. INTRODUCTION to electrolysis – electrolytes, non–electrolytes, electrode equations 2. Electrolysis of acidified water (dilute sulfuric acid) 3. Electrolysis of sodium chloride solution (brine) 4. Electrolysis of copper(II) sulfate solution and electroplating 5. Electrolysis of molten lead(II) bromide (and other molten compounds) 6. Electrolysis of copper(II) chloride solution 7. Electrolysis of hydrochloric acid 8. Summary of electrode equations and products 9. Summary of electrolysis products from various electrolytes 10. Simple cells (batteries) 11. Fuel Cells 12. The extraction of aluminium from purified molten bauxite ore 13. Anodising aluminium to thicken and strengthen the protective oxide layer 14. The extraction of sodium from molten sodium chloride using the 'Down's Cell' 15. The purification of copper by electrolysis 16. The purification of zinc by electrolysis 17. Electroplating coating conducting surfaces with a metal layer 18. Electrolysis of brine (NaCl) for the production of chlorine, hydrogen & sodium hydroxide 19. Electrolysis calculations |
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4d. USES OF COPPER
See also
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TOP OF PAGE and metal extraction index WHERE NEXT? Other associated KS4 Science GCSE/IGCSE chemistry web pages on this site
keywords formula equations copper extraction purification: CuCO3 ==> CuO + CO2 2CuO + C ==> 2Cu + CO2 CuFeS2 2CuFeS2 + 4O2 ==> Cu2S + 3SO2 + 2FeO Cu2S + O2 ==> 2Cu + SO2 CuS + O2 ==> Cu + SO2 Fe + CuSO4 ==> FeSO4 + Cu displacement Cu ==> Cu2+ + 2e– Cu2+ + 2e– ==> Cu IGCSE revision notes on the extraction and purification of copper KS4 Science revision notes on notes on the extraction and purification of copper GCSE guide notes on notes on the extraction and purification of copper for schools colleges academies science course tutors images pictures diagrams for notes on the extraction and purification of copper science revision notes on notes on the extraction and purification of copper for revising module topics notes to help on understanding of notes on the extraction and purification of copper university courses in science careers in science jobs in the industry laboratory assistant apprenticeships technical internships USA US grade 8 grade 9 grade10 AQA science GCSE notes on notes on the extraction and purification of copper Edexcel science notes on notes on the extraction and purification of copper for OCR 21st century science OCR GCSE Gateway science notes WJEC gcse science CCEA/CEA gcse science explain how copper is extracted from its ores, from which ores do you get copper from?, how do you extract copper from sulfide ores? copper sulfide CuS Cu2S how do you extract copper from carbonate ores? copper carbonate CuCO3 CuO what is phytomining of copper?, what is the phytoextraction of copper? how do you phytomine copper?, how do you phytoextract copper? describe the electrolytic purification of copper cathode anode copper electrodes copper sulfate electrolyte, how is bacterial leaching used to extract copper? how do you extract copper with bacteria? what is bioleaching to extract copper? how is copper refined using electrolysis? how do you reduce copper ores to copper? old names copper sulphide copper sulphate how do you extract copper from chalcopyrite CuFeS2 gcse chemistry revision free detailed notes on extraction & purification of copper to help revise igcse chemistry igcse chemistry revision notes on extraction & purification of copper O level chemistry revision free detailed notes on extraction & purification of copper to help revise gcse chemistry free detailed notes on extraction & purification of copper to help revise O level chemistry free online website to help revise extraction & purification of copper for gcse chemistry free online website to help revise extraction & purification of copper for igcse chemistry free online website to help revise O level extraction & purification of copper chemistry how to succeed in questions on extraction & purification of copper for gcse chemistry how to succeed at igcse chemistry how to succeed at O level chemistry a good website for free questions on extraction & purification of copper to help to pass gcse chemistry questions on extraction & purification of copper a good website for free help to pass igcse chemistry with revision notes on extraction & purification of copper a good website for free help to pass O level chemistry TOP OF PAGE and metal extraction index |
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