3 years ago

Recycling oxygen from spaceflight solid waste for life support system: Potential of pyrolysis process

Recycling oxygen from spaceflight solid waste for life support system: Potential of pyrolysis process
Recycling of solid waste for oxygen recovery in manned spacecraft is extremely important during long-term space missions. In the current study, pyrolysis process was evaluated to investigate the recovery potential of oxygen from spaceflight solid waste (SSW). A low fidelity waste surrogate (LFWS) was employed to simulate the solid waste produced during long-term space missions, and the oxygen distribution and oxygen-containing species in various pyrolysis products were investigated. In comparison with terrestrial municipal solid waste, SSW has higher content of oxygen, nitrogen and sulfur, but the content of carbon is much lower. The amount of oxygen recovered from SSW was higher than from terrestrial solid waste by pyrolysis treatment. Moreover, much more oxygen in SSW could be easily converted into the gaseous phase for oxygen recovery by adjusting treatment temperature. Nearly 50% of oxygen in SSW was recovered in the form of the gaseous product, and the optimal oxygen recovery efficiency was 29.54% at 700 °C. Recycling oxygen from SSW is a desirable approach to improve the closure level of oxygen cycle in the life support system. This work provides fundamental information for oxygen recycling from SSW during long-term space missions.

Publisher URL: www.sciencedirect.com/science

DOI: S1385894717317308

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.