Carbon
Dioxide and Hydrogen Sulfide Associations with
Regional Bacterial Diversity Patterns in Microbially Induced Concrete
Corrosion
Alison
L. Ling
Charles E. Robertson
J. Kirk Harris
Daniel N. Frank
Cassandra V. Kotter
Mark J. Stevens
Norman R. Pace
Mark T. Hernandez
10.1021/es500763e.s001
https://acs.figshare.com/articles/journal_contribution/Carbon_Dioxide_and_Hydrogen_Sulfide_Associations_with_Regional_Bacterial_Diversity_Patterns_in_Microbially_Induced_Concrete_Corrosion/2278978
The microbial communities associated
with deteriorating concrete
corrosion fronts were characterized in 35 samples taken from wastewater
collection and treatment systems in ten utilities. Bacterial communities
were described using Illumina MiSeq sequencing of the V1V2 region
of the small subunit ribosomal ribonucleic acid (SSU-rRNA) gene recovered
from fresh corrosion products. Headspace gas concentrations (hydrogen
sulfide, carbon dioxide, and methane), pore water pH, moisture content,
and select mineralogy were tested for correlation to community outcomes
and corrosion extent using pairwise linear regressions and canonical
correspondence analysis. Corroding concrete was most commonly characterized
by moisture contents greater than 10%, pore water pH below one, and
limited richness (<10 taxa). Bacterial community composition was
not correlated to geographic location when considered independently
from other environmental factors. Corrosion was most severe in sites
with high levels of hydrogen sulfide (>100 ppm) and carbon dioxide
(>1%) gases, conditions which also were associated with low diversity
biofilms dominated by members of the acidophilic sulfur-oxidizer genus <i>Acidithiobacillus</i>.
2014-07-01 00:00:00
treatment systems
V 1V region
Bacterial communities
moisture content
moisture contents
pore
carbon Dioxide
Headspace gas concentrations
Diversity Patterns
hydrogen sulfide
pH
carbon dioxide
Illumina MiSeq sequencing
diversity biofilms
corrosion fronts
community outcomes
Microbially Induced Concrete CorrosionThe
corrosion extent
corrosion products
canonical correspondence analysis
35 samples
wastewater collection
Hydrogen Sulfide Associations