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Characterization of soluble microbial products and their fouling impacts in membrane bioreactors

(2010) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 44(17). p.6642-6648
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Abstract
Membrane bioreactor (MBR) fouling is not only influenced by the soluble microbial products (SMP) concentration but by their characteristics. Experiments of separate producing biomass associated products (BAP) and utilization associated products (UAP) allowed the separation of BAP and UAP effects from sludge water (SW). Thus, filtration of individual SMP components and further characterization becomes possible. Unstirred cell filtration was used to study fouling mechanisms and liquid chromatography-organic carbon detection (LC-OCD) and fluorescence excitation emission matrix (EEM) were used to characterize the foulant. Generally, the SMP exhibiting characteristics of higher molecular weight, greater hydrophilicity and a more reduced state showed a higher retention percentage. However, the higher retention does not always yield higher fouling effects. The UAP filtration showed the highest specific cake resistance and pore blocking resistance attributed to their higher percentage of low molecular weight molecules, although their retention percentage was lower than the SW and BAP filtration. The UAP produced in the cell proliferation phase appeared to have the highestfouling potential.
Keywords
ACTIVATED-SLUDGE MICROORGANISMS, MUNICIPAL WASTE-WATER, AQUATIC ENVIRONMENT, FILTRATION, POLYMERS, SMP

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Chicago
Jiang, Tao, Maria D Kennedy, Veerle De Schepper, Seong-Nam Nam, Ingmar Nopens, Peter A Vanrolleghem, and Gary Amy. 2010. “Characterization of Soluble Microbial Products and Their Fouling Impacts in Membrane Bioreactors.” Environmental Science & Technology 44 (17): 6642–6648.
APA
Jiang, Tao, Kennedy, M. D., De Schepper, V., Nam, S.-N., Nopens, I., Vanrolleghem, P. A., & Amy, G. (2010). Characterization of soluble microbial products and their fouling impacts in membrane bioreactors. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 44(17), 6642–6648.
Vancouver
1.
Jiang T, Kennedy MD, De Schepper V, Nam S-N, Nopens I, Vanrolleghem PA, et al. Characterization of soluble microbial products and their fouling impacts in membrane bioreactors. ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2010;44(17):6642–8.
MLA
Jiang, Tao, Maria D Kennedy, Veerle De Schepper, et al. “Characterization of Soluble Microbial Products and Their Fouling Impacts in Membrane Bioreactors.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 44.17 (2010): 6642–6648. Print.
@article{1086579,
  abstract     = {Membrane bioreactor (MBR) fouling is not only influenced by the soluble microbial products (SMP) concentration but by their characteristics. Experiments of separate producing biomass associated products (BAP) and utilization associated products (UAP) allowed the separation of BAP and UAP effects from sludge water (SW). Thus, filtration of individual SMP components and further characterization becomes possible. Unstirred cell filtration was used to study fouling mechanisms and liquid chromatography-organic carbon detection (LC-OCD) and fluorescence excitation emission matrix (EEM) were used to characterize the foulant. Generally, the SMP exhibiting characteristics of higher molecular weight, greater hydrophilicity and a more reduced state showed a higher retention percentage. However, the higher retention does not always yield higher fouling effects. The UAP filtration showed the highest specific cake resistance and pore blocking resistance attributed to their higher percentage of low molecular weight molecules, although their retention percentage was lower than the SW and BAP filtration. The UAP produced in the cell proliferation phase appeared to have the highestfouling potential.},
  author       = {Jiang, Tao and Kennedy, Maria D and De Schepper, Veerle and Nam, Seong-Nam and Nopens, Ingmar and Vanrolleghem, Peter A and Amy, Gary},
  issn         = {0013-936X},
  journal      = {ENVIRONMENTAL SCIENCE \& TECHNOLOGY},
  keyword      = {ACTIVATED-SLUDGE MICROORGANISMS,MUNICIPAL WASTE-WATER,AQUATIC ENVIRONMENT,FILTRATION,POLYMERS,SMP},
  language     = {eng},
  number       = {17},
  pages        = {6642--6648},
  title        = {Characterization of soluble microbial products and their fouling impacts in membrane bioreactors},
  url          = {http://dx.doi.org/10.1021/es100442g},
  volume       = {44},
  year         = {2010},
}

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