https://www.biorxiv.org/content/10.1101/2021.01.12.426282v1 Skip to main content bioRxiv * Home * About * Submit * ALERTS / RSS Search for this keyword [ ] [Search] Advanced Search New Results Establishment of a closed artificial ecosystem to ensure human long-term survival on the moon Yuming Fu, Zhihao Yi, Yao Du, Hui Liu, Beizhen Xie, Hong Liu doi: https://doi.org/10.1101/2021.01.12.426282 Yuming Fu Beihang University * Find this author on Google Scholar * Find this author on PubMed * Search for this author on this site Zhihao Yi Beihang University * Find this author on Google Scholar * Find this author on PubMed * Search for this author on this site Yao Du Beihang University * Find this author on Google Scholar * Find this author on PubMed * Search for this author on this site Hui Liu Beihang University * Find this author on Google Scholar * Find this author on PubMed * Search for this author on this site Beizhen Xie Beihang University * Find this author on Google Scholar * Find this author on PubMed * Search for this author on this site Hong Liu Beihang University * Find this author on Google Scholar * Find this author on PubMed * Search for this author on this site * For correspondence: lh64@buaa.edu.cn * Abstract * Info/History * Metrics * Supplementary material * Preview PDF Loading Abstract Bioregenerative life support system (BLSS) is a critical technology maintaining long-term human survival on the Moon or other extraterrestrial bodies. In the current study, we carried out a 370-day integrated high-closure experiment ("Lunar Palace 365" experiment) on the Earth in an upgraded ground-based BLSS experimental facility called "Lunar Palace 1". This experiment was designed to develop techniques to run and adjust system stability under long-term operation and crew shift change conditions. Eight volunteering crew members were divided into two groups with three time phases: Group I stayed in the cabin for the initial 60-day phase; Group II inhabited the cabin instead for a record-breaking duration of 200 days as the second phase; Group I re-entered the cabin,replaced Group II and stayed for the last 105 days. Our results demonstrated the BLSS had excellent stability with a material closure degree of 98.2%. Levels of O2,CO2 and trace harmful gases were well controlled within ranges optimal for crew health and plant production. The system exhibited a strong robustness and could quickly minimize effects of disturbances through self-feedback adjustments. The efficiency of plant production completely met the crew's need of plant-based food. The purification efficiency of domestic and sanitary wastewater was up to irrigation standards,and the recovery rate of urine and solid waste achieved 99.7% and 67%,respectively. These results are valuable for further optimization of the BLSS in a lunar base and computer simulations of similar systems. Competing Interest Statement The authors have declared no competing interest. Copyright The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license. View the discussion thread. Back to top PreviousNext Posted January 14, 2021. Download PDF Supplementary Material Email Thank you for your interest in spreading the word about bioRxiv. 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[Send Message] Share Establishment of a closed artificial ecosystem to ensure human long-term survival on the moon Yuming Fu, Zhihao Yi, Yao Du, Hui Liu, Beizhen Xie, Hong Liu bioRxiv 2021.01.12.426282; doi: https://doi.org/10.1101/ 2021.01.12.426282 Share This Article: [https://www.biorxiv.org/content/10.1101/2021.01.12] Copy Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo Citation Tools Establishment of a closed artificial ecosystem to ensure human long-term survival on the moon Yuming Fu, Zhihao Yi, Yao Du, Hui Liu, Beizhen Xie, Hong Liu bioRxiv 2021.01.12.426282; doi: https://doi.org/10.1101/ 2021.01.12.426282 Citation Manager Formats * BibTeX * Bookends * EasyBib * EndNote (tagged) * EndNote 8 (xml) * Medlars * Mendeley * Papers * RefWorks Tagged * Ref Manager * RIS * Zotero * Tweet Widget * Facebook Like * Google Plus One Subject Area * Ecology Subject Areas All Articles * Animal Behavior and Cognition (2408) * Biochemistry (4756) * Bioengineering (3294) * Bioinformatics (14573) * Biophysics (6586) * Cancer Biology (5125) * Cell Biology (7366) * Clinical Trials (138) * Developmental Biology (4308) * Ecology (6817) * Epidemiology (2057) * Evolutionary Biology (9836) * Genetics (7305) * Genomics (9463) * Immunology (4504) * Microbiology (12581) * Molecular Biology (4898) * Neuroscience (28076) * Paleontology (198) * Pathology (798) * Pharmacology and Toxicology (1372) * Physiology (1993) * Plant Biology (4447) * Scientific Communication and Education (965) * Synthetic Biology (1293) * Systems Biology (3889) * Zoology (716)