HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOTECHNOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What process uses bacteria to eat away at minerals, leaving the silver, copper and gold behind?
A
Fermentation
B
Bioremediation
C
Biomining
D
Composting
Explanation: 

Detailed explanation-1: -Bioleaching (or biomining) is a process in mining and biohydrometallurgy (natural processes of interactions between microbes and minerals) that extracts valuable metals from a low-grade ore with the help of microorganisms such as bacteria or archaea.

Detailed explanation-2: -Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates. Metal recovery from sulfide minerals is based on the activity of chemolithotrophic bacteria, mainly Thiobacillus ferrooxidans and T.

Detailed explanation-3: -Some bacteria make a chemical that breaks bonds in copper sulfide minerals; other bacteria produce sulfuric acid, which draws the copper into a liquid solution. And microbes can help break down minerals embedded with gold with an assist from sodium cyanide, which dissolves the exposed precious metal.

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