Title:
A Feasibility Demonstration on Upcycling Steel Residuals for Hydrogen Sulfide Removal from Anaerobic Digester Biogas
Author(s):
Laroco, N.P., Caicedo-Ramirez, A., Grubb, D.G., Hernandez, M.T.
Document(s):
Paper
Abstract:
As a sustainable alternative to current biogas scrubbing practices, the (re)use of steel-making residuals commonly referred to as “slags”, can be engineered to reliably remove hydrogen sulfide from biogas. Proof-of-concept studies confirmed the potential of this byproduct to serve as a potent biogas scrubbing media in a pilot-scale demonstration at the Boulder Wastewater Resource Recovery Facility, Colorado, USA. The significant findings from this preliminary study manifested in the immobilization of 98% of influent H2S—treating more than 13 m3 of biogas containing 1,000 ppmg H2S by retaining 0.02 kg H2S per kg of slag media (2% by dry mass). This approach may have immediate impact in the biogas recovery industry, such that it can be easily scaled in a “plug and play” scenario with current gas treatment infrastructure, in a sustainable environmental paradigm.
Keywords:
anaerobic digestion, biogas, demonstration, adsorbent, natural gas
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Anaerobic digestion for biogas and biomethane production
Event:
27th European Biomass Conference and Exhibition
Session:
2DO.4.5
Pages:
605 - 607
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-2DO.4.5
Price:
FREE
