Chitosan-based Biocides for Water Disinfection

Date

2020-07-31

Authors

Martinelli, Larry
Vig, Komal

Journal Title

Journal ISSN

Volume Title

Publisher

2020 International Conference on Environmental Systems

Abstract

NASA’s current efforts are focused on long-duration flights to the Moon, Mars and beyond. Potable water is a fundamental requirement for crew consumption, specific hardware applications and more recently for plant growth in space. It is imperative to the success of the space missions that potable water be protected from microbial proliferation, especially in the case of stored water for extended periods of time. Iodine and ionic silver are used in the water on the International space station (ISS) and on space shuttle missions. These chemicals are able to prevent microbial growth but should be used in low concentrations to avoid human toxicity and need to be filtered before human consumption. Therefore, alternative, non-toxic biocides are needed for spacecraft potable water systems. In this paper studies on the use of chitosan-based disinfectants to protect water in crewed space missions will be presented.

Description

Larry Martinelli, CertainTech Inc., USA
Krishnaswamy Rangan, Materials Modification Inc., USA
Komal Vig, Alabama State University, USA
ICES303: Physio-Chemical Life Support- Water Recovery & Management Systems- Technology and Process Development
The proceedings for the 2020 International Conference on Environmental Systems were published from July 31, 2020. The technical papers were not presented in person due to the inability to hold the event as scheduled in Lisbon, Portugal because of the COVID-19 global pandemic.

Keywords

Biocides, Disinfectant, Drinking Water, Microbial, Antimicrobial, Silver, Iodine

Citation