SULFIX PPA-resistant scavenger mitigated H 2 S regeneration in treated asphalt Challenges ? Experienced H 2 S regeneration after adding PPA to asphalt ? Increased hazardous exposure to H 2 S and safety code violations ? Continued desire to use PPA modifiers Results ? Mitigated H 2 S to 0 ppm after initial application to asphalt ? Reduced H 2 S regeneration beyond target rates after PPA was added to asphalt ? Avoided additional HSE risks and safety violations An asphalt terminal in the United States was experiencing issues with hydrogen sulfide (H2S) regeneration when a polyphosphoric acid (PPA) modifier was added to their asphalt product. Though the terminal had a scavenger program in place for H2S abatement, it was not controlling the H2S regeneratio

Join for free to read