Guild Associates

Guild Associates Introduces BSR-050 Hydrogen Sulfide Removal Media


Now landfill, WWTP and digester operators have a new choice in solving their H2S removal problems.  Guild Associates, Inc. introduces BSR-050 – a high capacity, fast acting mixed metal oxide.

Like Iron Sponge media, BSR-050 media has integral catalytic sites to enable a sequence of reactions to convert the H2S to elemental sulfur.  In Iron Sponge media, these reactions only occur on the surface of the pellet, however the BSR-050 media has a pore structure that enables this reaction to occur not only on the external surface, but thoughout the internal volume of the pellet. Utilizing the entire volume instead of just the pellet surface enables the BSR-050 media to achieve industry-leading H2S removal on a pound-for-pound basis.  As a consequence, BSR-50 offers unprecedented benefits to the operator:

  • The highest lb per lb capacity of any media
  • Single pass operation reduces H2S from 1000 PPM to < 5PPM
  • Operates without danger of bricking
  • Fast media replacement with vacuum truck
BSR-050 Removal Capacity Far Exceeds Iron Sponge and Activated Carbon Technologies


Note the comparison to the left of BSR-050 Removal Capacity to Iron Sponge and Activated Carbon. BSR-050 is compatible with most existing process vessels, so the media can likely be utilized with existing equipment.  For new installations, the high capacity and long life characteristics of the media can  enable smaller vessels, thus reducing initial capital expenditure.  Operational costs are lowered by the less-frequent media changes and less electrical load resulting from varying pressure drop in the bed.  


BSR-050 Color Change to Black
Indicates Spent Media

A useful feature of BSR-050 is the color change of spent media, as illustrated in the picture to the left. 

Pilot-scale tests at a landfill site have proved the media's performance under real-world conditions.  BSR-050 media was subjected to landfill gas containing 600-900 PPM H2S over a 43-day period.  The vessel was sized so that 3.8 lbs of BSR-50 treated per SCFM of feed gas, compared with the landfill's existing system which utilized 20 lbs of carbon media per each SCFM.  The affluent flow was measured at undetectable levels of H2S until day 40, and the test was stopped at day 43 when affluent flow reached 90 PPM.  

Analysis of spent media verified that the H2S removal capacity exceeded 1.0 lb/lb.  Further, the spent media was analyzed by an independent laboratory for hazardous material using “Test Methods for Evaluating Solid Waste,” USEPA Document SW 846 (February, 2007)" and found to be classified as non-hazardous waste.

BSR-050 media is fully validated and is being manufactured at high volume in a new Guild Associates, Inc. facility. Contact Guild Associates for a quotation on a system or replacement media.  We will evaluate your application and design a process that maximizes the performance of BSR-050 media for your application.

Do you have a project in mind?  Download our CUSTOMER QUESTIONNAIRE and send the completed form to Guild Associates.  If you have questions or want to discuss your specific application, contact Paul Baker at 614-760-8013 or email to at Information Requests.