An necessary innovation for eradicating hydrogen sulphide (H2S) from biogas streams has picked up an trade award, certainly one of two main awards for CPL/Puragen in November (the opposite one within the area of PFAS destruction).
On the Nationwide Recycling Awards, run by MRW, CPL/Puragen’s submission for “Excessive-Sulphur Spent Carbon Reactivation” was topped the winner within the Vitality Innovation class.
The breakthrough addresses a significant problem within the biogas trade. Hydrogen sulphide (H2S), a poisonous and corrosive fuel, has been a major contaminant in biogas. It could possibly severely injury downstream mixed warmth and energy (CHP) engines or forestall the fuel from assembly grid-injection high quality requirements.
Activated carbon is presently one of the best out there know-how for eradicating H2S from biogas streams, however the course of leaves elemental sulphur trapped throughout the carbon. The excessive ranges of sulphur current have disqualified a longtime strategy, thermal reactivation, a way used to get well spent carbon, on the grounds of feasibility. In consequence, these spent carbons are sometimes discarded by means of landfilling or incineration.
CPL/Puragen has developed a seemingly distinctive course of that efficiently removes sulphur. This implies high-sulphur spent carbon can now be reprocessed on the group’s thermal reactivation facility within the UK. The reactivated carbon is prepared to be used in future purification purposes, stopping hundreds of tons of waste annually.
“We’re proud to be the primary to market with this cutting-edge know-how, operational since late 2023. No different activated carbon firm within the UK or mainland Europe has this functionality,” stated an announcement from the group.
“This Vitality Innovation award will proudly sit alongside our Gold Award from this yr’s Inexperienced Apple Surroundings Awards, which acknowledges and rewards excellent environmental practices globally. Final yr, we earned a Bronze Award for our REACT-Sys® thermal reactivation course of.
In November the agency was additionally lauded for its “PFAS-busting know-how”, often known as “Search, Seize and Destroy” which picked up a Gold Award on this yr’s Worldwide Inexperienced Apple Surroundings Awards. The award is run by The Inexperienced Organisation, an unbiased, worldwide, non-political, non-profit, environmental group.
The PFAS-busting know-how contains three steps:
- Elimination of PFAS compounds utilizing optimised granular activated carbons (GAC) from our FiltraCarb® CH vary, typically making use of our AquaSorber® cellular carbon filters;
- Recycling of the spent carbon through our REACT-Sys® thermal reactivation course of;
- Destruction of the desorbed PFAS molecules through refined downstream thermal oxidisers and chemical scrubbers.
Mentioned the group: “Impartial testing has proved that our superior reactivation course of, provisionally referred to as REACT-Sys+, reduces the emissions of PFAS right down to background ranges, within the fuel section. Our liquid section emissions have zero detectable PFAS in any respect. Therefore our daring declare that we ‘Search, Seize & Destroy’ these dangerous compounds, that are unhelpfully referred to in some circles as ‘ceaselessly chemical compounds’. They’re definitely not ‘ceaselessly’ once they come face-to-face with our know-how!”
Final yr CPL/Puragen acquired a Bronze Award for its REACT-Sys® thermal reactivation course of, whereby spent activated carbons are recycled on the group’s UK facility, able to be re-used by prospects of their environmental purification purposes.
