×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

How to measure H2S in landfill gas > 30.000 ppm

How to measure H2S in landfill gas > 30.000 ppm

How to measure H2S in landfill gas > 30.000 ppm

(OP)
I am working on a project with a landfill gas having more than 30.000 ppm H2S as measured by GC. I would like to log concentrations continuously over some time (a couple of months).

Bearing in mind that the gas is ATEX zone 0 and installation will be in an ATEX zone 1 area;

Any suggestions on where to find sensors / sampling pumps or sampling systems?  

Cheers,
Knut
purenviro.com

RE: How to measure H2S in landfill gas > 30.000 ppm

If you have 3% H2S is the gas even worth looking at?    
Anyway how I would handle it if I need samples continuously was I would use a GC in a non haz area and pipe the gas over to it in a very small line.   You need good venilation and probably an H2S monitor in the area if you are going to have people around.

Regards
StoneCold

RE: How to measure H2S in landfill gas > 30.000 ppm

The cheap easy way is to do spot sampling http://www.buydraegertubes.com/hydrogensulfide02a-1.aspx

Or here is an expensive version

[PDF] Tail Gas Analyzer
www.a-a-inc.com/.../AAI_Product_Bulletin-TLG-837_Tail_Gas_Analyzer_ ...File Format: PDF/Adobe Acrobat
tions of H2S and SO2 in the Claus process stream, computing the control ... solid state diode array detector. • synchronous monitoring of H2S, SO2, COS, CS2 ... unit is used to absorb H2S from fossil fuels. The Claus process is the ...
 

RE: How to measure H2S in landfill gas > 30.000 ppm

I know it sounds hokey, but we've used big garbage bags to sample real low pressure gasses.  Collect and then either do a tedlar bag and onsite analysis or do onsite Draegers.  I've never had much luck with Draegers being accurate though.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources