PMID- 21520820
OWN - NLM
STAT- MEDLINE
DCOM- 20110524
LR  - 20220318
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 23
IP  - 3
DP  - 2011
TI  - Microbial population dynamics and changes in main nutrients during the 
      acidification process of pig manures.
PG  - 497-505
AB  - This study evaluated the impact of pig manure acidification on anaerobic 
      treatment and composition of the fecal microbial community. According to the 
      different chemical oxygen demand (COD) in the anaerobic treatment processes, pig 
      manure was diluted 4 times (x4), 16 times (x16), or 64 times (x64) and subjected 
      to acidification. During the acidification process, pH, soluble chemical oxygen 
      demand (SCOD), volatile fatty acids (VFAs), nitrogen (N), phosphorus (P) and 
      potassium (K) were determined along with microbial population dynamics. The pH of 
      the three dilutions first declined, and then slowly increased. The total VFAs of 
      x4 and x16 dilutions peaked on day 15 and 20, respectively. The content of acetic 
      acid, propanoic acid, butanoic acid and valeric acid of the x4 dilution were 
      23.6, 11.4, 8.8 and 0.6 g/L respectively, and that of the x16 dilution was 5.6, 
      2.3, 0.9 and 0.2 g/L respectively. Only acetic acid was detected in the x64 
      dilution, and its level peaked on day 10. The results showed that the liquid pig 
      manure was more suitable to enter the anaerobic methanogenic bioreactors after 
      two weeks of acidification. During the acidification process, total P 
      concentration increased during the first ten days, then dropped sharply, and rose 
      again to a relatively high final concentration, while total N concentration rose 
      initially and then declined. Based on the analysis of denaturing gradient gel 
      electrophoresis (DGGE) and 16S rRNA gene clone library, we concluded that the 
      acidification process reduced the number of pathogenic bacteria species in pig 
      manure.
FAU - Zhang, Dongdong
AU  - Zhang D
AD  - College of Agronomy and Biotechnology/Center of Biomass Engineering, China 
      Agricultural University, Beijing 100193, China. zhangdonglucky@163.com
FAU - Yuan, Xufeng
AU  - Yuan X
FAU - Guo, Peng
AU  - Guo P
FAU - Suo, Yali
AU  - Suo Y
FAU - Wang, Xiaofen
AU  - Wang X
FAU - Wang, Weidong
AU  - Wang W
FAU - Cui, Zongjun
AU  - Cui Z
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 0 (Fatty Acids, Volatile)
RN  - 0 (Manure)
RN  - 0 (RNA, Ribosomal, 16S)
SB  - IM
MH  - Animals
MH  - Bacteria, Anaerobic/classification/genetics/*metabolism/pathogenicity
MH  - Fatty Acids, Volatile/chemistry/metabolism
MH  - *Hydrogen-Ion Concentration
MH  - Manure/*analysis/*microbiology
MH  - Phylogeny
MH  - *Population Dynamics
MH  - RNA, Ribosomal, 16S/analysis
MH  - Swine
MH  - Volatilization
EDAT- 2011/04/28 06:00
MHDA- 2011/05/25 06:00
CRDT- 2011/04/28 06:00
PHST- 2011/04/28 06:00 [entrez]
PHST- 2011/04/28 06:00 [pubmed]
PHST- 2011/05/25 06:00 [medline]
AID - 10.1016/s1001-0742(10)60434-2 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2011;23(3):497-505. doi: 10.1016/s1001-0742(10)60434-2.