title: Rheological characteristics of microbial suspensions of Pseudomonas aeruginosa and Bacillus cereus.
abstract: The rheological properties of the bacteria Pseudomonas aeruginosa and Bacillus cereus have been investigated. The apparent viscosity of the bacterial suspensions has been measured at different conditions. The results showed that the bacterial suspensions' apparent viscosity increased with increasing biomass concentration of each of these strains. The P. aeruginosa suspension followed shear thinning behavior while B. cereus suspension followed shear thickening behavior. The shear stress versus shear rate experimental data were best represented by the Herschel-Bulkley model. The apparent viscosity of the P. aeruginosa and B. cereus suspensions decreased with increasing temperature. The relationship between the apparent viscosity and the shearing time highlighted the rheopectic behavior of the suspensions used in this work.
authors.affiliation: Department of Chemical Engineering, Jordan University of Science and Technology, Irbid, Jordan. alasheh@just.edu.jo
authors.forename: Sameer
authors.initials: S
authors.lastname: Al-Asheh
authors.forename: Basim
authors.initials: B
authors.lastname: Abu-Jdayil
authors.forename: Nadia
authors.initials: N
authors.lastname: Abunasser
authors.forename: Afaf
authors.initials: A
authors.lastname: Barakat
mesh_terms: D001409:Bacillus cereus / Q000254:growth & development / Q000502:physiology*; D018533:Biomass; D011550:Pseudomonas aeruginosa / Q000254:growth & development / Q000502:physiology*; D012212:Rheology; D013696:Temperature; D013997:Time Factors