Removal of mercury from flue gases from mine industry?

Although this is a water research and consultancy group. I have recently been referred for this problem. Can anyone help me on suggestions to remove trace level mercury from mining flue gas?

Thank you!

Taxonomy

• Mining Development
• Industrial Gas
• Noble Gases
• Compound Gases

7 Answers

1. Due to its adverse impact on health, as well as its global distribution, long atmospheric lifetime and propensity for deposition in the aquatic environment and in living tissue, the US Environmental Protection Agency (US EPA) has classified mercury and its compounds as a severe air quality threat. Such widespread presence of mercury in the environment originates from both natural and anthropogenic sources.

2. Dear Mahesh,

   The choice of flue gas cleaning method depends on the volume of  gases per hour, the content of mercury and other compounds in gases, the temperature of gases and other.
   Use of pretreated activated carbon can be effective in removing traces of mercury.

   Regards,

   Chemist-ecologist Vitalijus Gediminas.

3. Hello Mahesh Gadekar 

   You can consider putting up a mercury removal plant which will remove the mercury as mercurous chloride (calomel) which can be sold as mercury sludge. If tonnage is sufficient you can put up a electrolysis plant to convert calomel to mercury.

   All the Best!

4. Mr. Mahesh, please contact us on info@aeolusbioenergy.com with your issues. we have solutions for your mercury treatment. 

5. I wonder if a locally-produced biochar product would work as well as commercially available activated carbon.

6. we have product can remove HG from flue gas. Activated carbon can be used in either fixed bed configuration or injecting activated carbon powder 

    

7. Dear Mahesh.

   All the sorbents adsorb elemental mercury through three mechanisms:

   1. Physic sorption,
   2. Chemisorption and
   3. Amalgamation.

   1. Graphene Oxide used for absorption.
   2. Activated Carbon used but it is expensive. Sorbent(zeolite, bentonite) can be used OR Nano-structured zinc sulfide (Nano-ZnS)
   3. S-Zeolite sorbent efficiency  comparable with a commercial ACs for Hg capture

   The most general used sorbents include activated carbon (ACs)/treated ACs, calcium based sorbents, petroleum coke and zeolites. All of these sorbents capture elemental mercury or catalyse mercury oxidization by means of active surface chemicals.

   Regards,

   Prem Baboo