Surface reflectance degradation by microbial communities

Cheng, Meng -Dawn; Allman, Steve L.; Graham, David E.; Cheng, Karen R.; Pfiffner, Susan Marie; Vishnivetskaya, Tatiana A.; Desjarlais, Andre Omer

doi:10.1177/1744259115611866

Title: Surface reflectance degradation by microbial communities

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Abstract

Building envelope, such as a roof, is the interface between a building structure and the environment. Understanding of the physics of microbial interactions with the building envelope is limited. In addition to the natural weathering, microorganisms and airborne particulate matter that attach to a cool roof tend to reduce the roof reflectance over time, compromising the energy efficiency advantages of the reflective coating designs. We applied microbial ecology analysis to identify the natural communities present on the exposed coatings and investigated the reduction kinetics of the surface reflectance upon the introduction of a defined mixture of both photoautotrophic and heterotrophic microorganisms representing the natural communities. The result are (1) reflectance degradation by microbial communities follows a first-order kinetic relationship and (2) more than 50% of degradation from the initial reflectance value can be caused by microbial species alone in much less time than 3 years required by the current standard ENERGY STAR® test methods.

Authors:

Cheng, Meng -Dawn ^[1]; Allman, Steve L. ^[1]; Graham, David E. ^[1]; Cheng, Karen R. ^[2]; Pfiffner, Susan Marie ^[3]; Vishnivetskaya, Tatiana A. ^[3]; Desjarlais, Andre Omer ^[4]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
L&N STEM Academy, Knoxville, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Thu Nov 05 00:00:00 EST 2015

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Building Technologies Research and Integration Center (BTRIC)

Sponsoring Org.:: Work for Others (WFO)

OSTI Identifier:: 1244182

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Building Physics

Additional Journal Information:: Journal Volume: 47; Journal Issue: 2; Journal ID: ISSN 1744-2591

Publisher:: SAGE

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; building envelope; microbial degradation; coating; biokinetics

Citation Formats


                    Cheng, Meng -Dawn, Allman, Steve L., Graham, David E., Cheng, Karen R., Pfiffner, Susan Marie, Vishnivetskaya, Tatiana A., and Desjarlais, Andre Omer. Surface reflectance degradation by microbial communities.  United States: N. p., 2015. 
Web.  doi:10.1177/1744259115611866.

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                    Cheng, Meng -Dawn, Allman, Steve L., Graham, David E., Cheng, Karen R., Pfiffner, Susan Marie, Vishnivetskaya, Tatiana A., & Desjarlais, Andre Omer. Surface reflectance degradation by microbial communities.  United States.  https://doi.org/10.1177/1744259115611866

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                    Cheng, Meng -Dawn, Allman, Steve L., Graham, David E., Cheng, Karen R., Pfiffner, Susan Marie, Vishnivetskaya, Tatiana A., and Desjarlais, Andre Omer. Thu .  
"Surface reflectance degradation by microbial communities".  United States.  https://doi.org/10.1177/1744259115611866.  https://www.osti.gov/servlets/purl/1244182.

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@article{osti_1244182,

  title        = {Surface reflectance degradation by microbial communities},

  author       = {Cheng, Meng -Dawn and Allman, Steve L. and Graham, David E. and Cheng, Karen R. and Pfiffner, Susan Marie and Vishnivetskaya, Tatiana A. and Desjarlais, Andre Omer},

  abstractNote = {Building envelope, such as a roof, is the interface between a building structure and the environment. Understanding of the physics of microbial interactions with the building envelope is limited. In addition to the natural weathering, microorganisms and airborne particulate matter that attach to a cool roof tend to reduce the roof reflectance over time, compromising the energy efficiency advantages of the reflective coating designs. We applied microbial ecology analysis to identify the natural communities present on the exposed coatings and investigated the reduction kinetics of the surface reflectance upon the introduction of a defined mixture of both photoautotrophic and heterotrophic microorganisms representing the natural communities. The result are (1) reflectance degradation by microbial communities follows a first-order kinetic relationship and (2) more than 50% of degradation from the initial reflectance value can be caused by microbial species alone in much less time than 3 years required by the current standard ENERGY STAR® test methods.},

  doi          = {10.1177/1744259115611866},

  journal      = {Journal of Building Physics},

  number       = 2,

  volume       = 47,

  place        = {United States},

  year         = {Thu Nov 05 00:00:00 EST 2015},

  month        = {Thu Nov 05 00:00:00 EST 2015}

}

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