Title: Life Support Systems - an overview | ScienceDirect Topics
Headings: Life Support Systems
Life Support Systems
Extraterrestrial Facilities Engineering
VIII Controlled Ecological Life-Support Systems
VIII.A Issues for Controlled Ecological Life-Support System Design
VIII.B Supercritical Water Oxidation System
Ethics
A Crucial Shift
Speaking Truth to Power: Scientists as Advocates and Ways to Engage
Abstract
Social Resilience in the Anthropocene Ocean
Introduction
Foreword
Chemical fertilizers and pesticides: role in groundwater contamination
Abstract
Environmental Ethics
A. Health and Wealth
Ecological Economics 1
Basic Worldview and Goals
Ecological Economics 1☆
Basic Worldview and Goals

Content: Longer missions dictate the need for a CELSS that involves bioregenerative aspects. In the CELSS, water, food, and oxygen are supplied to residents of the extraterrestrial facility by organisms that consume carbon dioxide and water. Energy must be supplied to these organisms, which may be plants or algae or a combination. Key issues for the CELSS designer are weight, volume, and cost of operation. TABLE XI. Three Options for Resident Life Support at Extraterrestrial Facilities
Life-support option
O2
CO2
H2O
Food
Waste
Resupply
Stored
Adsorbed by LiOH
Stored
Stored
Stored
Physical/chemical systems
Reclaimed from CO 2
Amine adsorbed conc./reduced
Distillation membrane/evap. Stored
Stored
Bioregenerative systems
From plants
To plants
Plant transpiration
Produced
Recycled
VIII.A Issues for Controlled Ecological Life-Support System Design
There are three main issues pertaining to CELSS design: 1. Solid and liquid wastes may require processing before use by photosynthetic organisms. 2.