TY - JOUR
T1 - Growth and interaction mechanism of multi-strain biofouling under different nutrient levels
AU - Yang, Qianpeng
AU - Chen, Xiaodong
AU - Tian, Lei
AU - Shi, Lin
PY - 2013/3
Y1 - 2013/3
N2 - Heat pump system is an effective method for heat recovery of a treated sewage source, but biofouling on heat exchanger is still a problem to be solved, and may affect seriously efficiency and security of the system. By long term monitoring and 16S rRNA identification, two major bacteria genus, Bacillus sp. and Aeromonas sp., were selected for multi-strain biofouling experiment of a model fluid in laboratory. By the experiment of foul growth performed on a purpose made channel at various bacteria ratios and nutrient levels, the regular patterns of single and mixed microbe growth of Bacillus sp. and Aeromonas sp. were revealed, their synergy and inhibition interaction summarized, and the effect of nutrient levels on their growth mechanism and interaction also investigated. The results indicated that the Bacillus sp. has strong ability in biofouling, in high multiple rates, and high tolerance to poor nutrient level. The biofouling of Aeromonas sp. is weak relatively, but high secretion rate that may help for the synergy growth with Bacillus sp. Their synergy and inhibition interactions co-exist and dominate in turn under different growth stage and condition.
AB - Heat pump system is an effective method for heat recovery of a treated sewage source, but biofouling on heat exchanger is still a problem to be solved, and may affect seriously efficiency and security of the system. By long term monitoring and 16S rRNA identification, two major bacteria genus, Bacillus sp. and Aeromonas sp., were selected for multi-strain biofouling experiment of a model fluid in laboratory. By the experiment of foul growth performed on a purpose made channel at various bacteria ratios and nutrient levels, the regular patterns of single and mixed microbe growth of Bacillus sp. and Aeromonas sp. were revealed, their synergy and inhibition interaction summarized, and the effect of nutrient levels on their growth mechanism and interaction also investigated. The results indicated that the Bacillus sp. has strong ability in biofouling, in high multiple rates, and high tolerance to poor nutrient level. The biofouling of Aeromonas sp. is weak relatively, but high secretion rate that may help for the synergy growth with Bacillus sp. Their synergy and inhibition interactions co-exist and dominate in turn under different growth stage and condition.
KW - Biofouling
KW - Growth mechanism
KW - Multi-strain
KW - Synergy and inhibition interactions
UR - http://www.scopus.com/inward/record.url?scp=84875623450&partnerID=8YFLogxK
U2 - 10.3969/j.issn.0438-1157.2013.03.035
DO - 10.3969/j.issn.0438-1157.2013.03.035
M3 - Article
AN - SCOPUS:84875623450
VL - 64
SP - 1036
EP - 1041
JO - Huagong Xuebao/Journal of Chemical Industry and Engineering (China)
JF - Huagong Xuebao/Journal of Chemical Industry and Engineering (China)
SN - 0438-1157
IS - 3
ER -