Abstract
To assess Escherichia coli (E. coli) persistence in dairy manure, bench scale experiments were conducted under aerobic and anaerobic environments. The changes in E. coli levels in dairy manure were assessed at moderate (25 °C), mesophilic (37 °C), and thermophilic (52.5 °C) temperatures. The inactivation of E. coli at moderate, mesophilic, and thermophilic temperatures were described by linear regression equations. Subsequently, double-exponential kinetic models were developed to describe the E. coli decay curves under aerobic and anaerobic environments. The kinetics models were used to estimate E. coli log reductions at various temperatures. Results showed that the double-exponential kinetic models performed well while calculating E. coli reductions in dairy manure over the incubation period. In addition, we evaluated digestate to compare the changes in total solids and volatile solids, total organic carbon, total nitrogen, pH, and oxygen reduction potential levels in aerobic and anaerobic conditions under various temperatures. We anticipate that the results presented here will be useful for enhancing the understanding of pathogen reduction in anaerobic and aerobic processes during dairy manure treatment.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 457-467 |
| Number of pages | 11 |
| Journal | Bioprocess and Biosystems Engineering |
| Volume | 38 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 26 2015 |
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Keywords
- Aerobic
- Anaerobic
- Dairy manure
- E. coli
- Inactivation
ASJC Scopus subject areas
- Biotechnology
- Bioengineering
Cite this
Escherichia coli persistence kinetics in dairy manure at moderate, mesophilic, and thermophilic temperatures under aerobic and anaerobic environments. / Pandey, Pramod; Biswas, Sagor; Vaddella, Venkata K.; Soupir, Michelle L.
In: Bioprocess and Biosystems Engineering, Vol. 38, No. 3, 26.02.2015, p. 457-467.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Escherichia coli persistence kinetics in dairy manure at moderate, mesophilic, and thermophilic temperatures under aerobic and anaerobic environments
AU - Pandey, Pramod
AU - Biswas, Sagor
AU - Vaddella, Venkata K.
AU - Soupir, Michelle L.
PY - 2015/2/26
Y1 - 2015/2/26
N2 - To assess Escherichia coli (E. coli) persistence in dairy manure, bench scale experiments were conducted under aerobic and anaerobic environments. The changes in E. coli levels in dairy manure were assessed at moderate (25 °C), mesophilic (37 °C), and thermophilic (52.5 °C) temperatures. The inactivation of E. coli at moderate, mesophilic, and thermophilic temperatures were described by linear regression equations. Subsequently, double-exponential kinetic models were developed to describe the E. coli decay curves under aerobic and anaerobic environments. The kinetics models were used to estimate E. coli log reductions at various temperatures. Results showed that the double-exponential kinetic models performed well while calculating E. coli reductions in dairy manure over the incubation period. In addition, we evaluated digestate to compare the changes in total solids and volatile solids, total organic carbon, total nitrogen, pH, and oxygen reduction potential levels in aerobic and anaerobic conditions under various temperatures. We anticipate that the results presented here will be useful for enhancing the understanding of pathogen reduction in anaerobic and aerobic processes during dairy manure treatment.
AB - To assess Escherichia coli (E. coli) persistence in dairy manure, bench scale experiments were conducted under aerobic and anaerobic environments. The changes in E. coli levels in dairy manure were assessed at moderate (25 °C), mesophilic (37 °C), and thermophilic (52.5 °C) temperatures. The inactivation of E. coli at moderate, mesophilic, and thermophilic temperatures were described by linear regression equations. Subsequently, double-exponential kinetic models were developed to describe the E. coli decay curves under aerobic and anaerobic environments. The kinetics models were used to estimate E. coli log reductions at various temperatures. Results showed that the double-exponential kinetic models performed well while calculating E. coli reductions in dairy manure over the incubation period. In addition, we evaluated digestate to compare the changes in total solids and volatile solids, total organic carbon, total nitrogen, pH, and oxygen reduction potential levels in aerobic and anaerobic conditions under various temperatures. We anticipate that the results presented here will be useful for enhancing the understanding of pathogen reduction in anaerobic and aerobic processes during dairy manure treatment.
KW - Aerobic
KW - Anaerobic
KW - Dairy manure
KW - E. coli
KW - Inactivation
UR - http://www.scopus.com/inward/record.url?scp=84938060332&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84938060332&partnerID=8YFLogxK
U2 - 10.1007/s00449-014-1285-3
DO - 10.1007/s00449-014-1285-3
M3 - Article
C2 - 25248871
AN - SCOPUS:84938060332
VL - 38
SP - 457
EP - 467
JO - Bioprocess and Biosystems Engineering
JF - Bioprocess and Biosystems Engineering
SN - 1615-7591
IS - 3
ER -