The company’s biomass-fueled process transforms shredded garbage into carbon and hydrogen char for long-term soil carbon storage, while generating energy that reduces cement factory carbon footprints.
Pull To Refresh, a Techstars 2025 company co-founded and led by CEO Arin Crumley, uses hard tech to turn municipal waste into durable carbon removal. The company aims to help corporations reach their net-zero goals through this approach.
Pull To Refresh designs autonomous, solar-powered vessels intended to remove CO2 by sinking seaweed. The startup uses Onshape for collaborative design and is competing in the XPRIZE Carbon Removal competition.
Companies are exploring abyssal sinking of carbon-filled kelp as a method of carbon sequestration. British Columbia’s coastline has abundant kelp, a seaweed that sequesters carbon.
Companies pursuing kelp-based carbon removal may be moving ahead of the science. Researchers are still investigating whether sinking seaweed can sequester substantial amounts of carbon reliably and at scale, and what risks the approach may pose.
