Lyophilization for water recovery

Eric Litwiller; Martin Reinhard; Michael Flynn; John Fisher

doi:10.4271/2001-01-2348

Lyophilization for water recovery

Eric Litwiller^*, Martin Reinhard, Michael Flynn, John Fisher

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

An energy-efficient lyophilization technique is being developed to recover water from highly contaminated spacecraft waste streams. In the lyophilization process, water in an aqueous waste is frozen and then sublimed, separating the waste into a dried solid material and liquid water. This technology is ideally suited to applications such as the Mars Reference Mission, where water recovery rates approaching 100% are desirable but production of CO₂ is not. Candidate wastes include feces, concentrated brines from water processors, and other solid wastes that contain water. To operate in microgravity, and to minimize power consumption, thermoelectric heat pumps can be used in place of traditional fluid cycle heat pumps. A mathematical model of a thermoelectric lyophilizer is described and used to generate energy use and processing rate estimates.

Original language	English (US)
Title of host publication	31st International Conference on Environmental Systems
DOIs	https://doi.org/10.4271/2001-01-2348
State	Published - 2001
Externally published	Yes
Event	31st International Conference on Environmental Systems - Orlando, FL, United States Duration: Jul 9 2001 → Jul 12 2001

Other

Other	31st International Conference on Environmental Systems
Country/Territory	United States
City	Orlando, FL
Period	07/9/01 → 07/12/01

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

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10.4271/2001-01-2348

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title = "Lyophilization for water recovery",

abstract = "An energy-efficient lyophilization technique is being developed to recover water from highly contaminated spacecraft waste streams. In the lyophilization process, water in an aqueous waste is frozen and then sublimed, separating the waste into a dried solid material and liquid water. This technology is ideally suited to applications such as the Mars Reference Mission, where water recovery rates approaching 100% are desirable but production of CO2 is not. Candidate wastes include feces, concentrated brines from water processors, and other solid wastes that contain water. To operate in microgravity, and to minimize power consumption, thermoelectric heat pumps can be used in place of traditional fluid cycle heat pumps. A mathematical model of a thermoelectric lyophilizer is described and used to generate energy use and processing rate estimates.",

author = "Eric Litwiller and Martin Reinhard and Michael Flynn and John Fisher",

year = "2001",

doi = "10.4271/2001-01-2348",

language = "English (US)",

booktitle = "31st International Conference on Environmental Systems",

note = "31st International Conference on Environmental Systems ; Conference date: 09-07-2001 Through 12-07-2001",

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TY - GEN

T1 - Lyophilization for water recovery

AU - Litwiller, Eric

AU - Reinhard, Martin

AU - Flynn, Michael

AU - Fisher, John

PY - 2001

Y1 - 2001

N2 - An energy-efficient lyophilization technique is being developed to recover water from highly contaminated spacecraft waste streams. In the lyophilization process, water in an aqueous waste is frozen and then sublimed, separating the waste into a dried solid material and liquid water. This technology is ideally suited to applications such as the Mars Reference Mission, where water recovery rates approaching 100% are desirable but production of CO2 is not. Candidate wastes include feces, concentrated brines from water processors, and other solid wastes that contain water. To operate in microgravity, and to minimize power consumption, thermoelectric heat pumps can be used in place of traditional fluid cycle heat pumps. A mathematical model of a thermoelectric lyophilizer is described and used to generate energy use and processing rate estimates.

AB - An energy-efficient lyophilization technique is being developed to recover water from highly contaminated spacecraft waste streams. In the lyophilization process, water in an aqueous waste is frozen and then sublimed, separating the waste into a dried solid material and liquid water. This technology is ideally suited to applications such as the Mars Reference Mission, where water recovery rates approaching 100% are desirable but production of CO2 is not. Candidate wastes include feces, concentrated brines from water processors, and other solid wastes that contain water. To operate in microgravity, and to minimize power consumption, thermoelectric heat pumps can be used in place of traditional fluid cycle heat pumps. A mathematical model of a thermoelectric lyophilizer is described and used to generate energy use and processing rate estimates.

UR - http://www.scopus.com/inward/record.url?scp=84877492849&partnerID=8YFLogxK

U2 - 10.4271/2001-01-2348

DO - 10.4271/2001-01-2348

M3 - Conference contribution

BT - 31st International Conference on Environmental Systems

T2 - 31st International Conference on Environmental Systems

Y2 - 9 July 2001 through 12 July 2001

ER -

Lyophilization for water recovery

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ASJC Scopus subject areas

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