Phytomining and bioleaching

• What should you be able to describe by the end of the video?

  How vital mining and bio leaching extract copper
• Why are most metals found in the Earth's crust already reacted with other elements?

  They are chemically stable and not pure
• What is a significant metal mentioned in the material?

  Copper
• What is copper primarily used for?

  In electronic equipment such as phones
• What is the definition of a metal ore?

  A rock containing enough metal to extract
• What does the term 'economical' mean in this context?

  Cost-effective
• What is the problem with copper ores mentioned in the material?

  Copper ores are becoming scarce
• What are low-grade ores?

  Ores containing only a small amount of copper
• Why is it harder to extract copper from low-grade ores?

  They contain a small amount of copper
• What is the first method of extracting copper mentioned?

  Phyto mining
• How does phyto mining work?

  Plants absorb metal compounds and concentrate them
• What happens to the plants after they absorb metal compounds in phyto mining?

  They are harvested and burned
• What does the ash from burned plants contain?

  A high concentration of the metal compound
• What is the second method of extracting metals mentioned?


  Bio leaching
• How do bacteria contribute to bio leaching?

  They carry out chemical reactions to produce leachate
• What is leachate?

  A solution containing the desired metal compound
• What must be done after extracting the metal compound from low-grade ore?

  The metal must be extracted from the compound
• How can copper be extracted from copper compounds?

  By displacing it using iron
• Why is scrap iron used for displacing copper?

  It is cheap
• What is another method to extract copper besides displacement?

  Electrolysis
• What are the key points about phyto mining and bio leaching?

  • Economically extract metals from low-grade ores
  • Earth’s resources of metal ores are limited
  • Do not involve large-scale mining processes
• What type of questions can be expected on phyto mining and bio leaching?

  Plenty of questions in motivation work