Bacteria of different Gram-types have inherently different outer cell structures, influencing cell surface properties and bacterial attachment. Dynamic biofouling experiments were conducted over four days in a bench-scale forward osmosis (FO) system with Gram-negative Pseudomonas aeruginosa or Gram-positive Anoxybacillus sp. Biofouling resulted in ∼10% decline in FO permeate water flux and was found to be significant for Anoxybacillus sp. but not for P. aeruginosa. Additionally, a stronger permeate water flux decline for P. aeruginosa in experiments with a superhydrophilic feed spacer demonstrated that mitigation methods require testing with different bacterial Gram-types. It was found that although permeate water flux decline can be affected by bacterial Gram-type the stable performance under enhanced biofouling conditions highlights the potential of FO for wastewater reclamation.
|Original language||English (US)|
|Number of pages||13|
|State||Published - Jan 2 2019|
- Forward osmosis
- bacteria Gram-type
- spacer modification
ASJC Scopus subject areas
- Aquatic Science
- Applied Microbiology and Biotechnology
- Water Science and Technology
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Comparing membrane and spacer biofouling by Gram-negative Pseudomonas aeruginosa and Gram-positive Anoxybacillus sp. in forward osmosis
Bogler, A. (Contributor), Rice, D. (Contributor), Perreault, F. (Contributor) & Bar-Zeev, E. (Contributor), figshare Academic Research System, Jan 2 2019
DOI: 10.6084/m9.figshare.7751234.v1, https://doi.org/10.6084%2Fm9.figshare.7751234.v1