TY - JOUR
T1 - Fluid bed porosity mathematical model for an inverse fluidized bed bioreactor with particles growing biofilm
AU - Campos-Díaz, K. E.
AU - Bandala-González, E. R.
AU - Limas-Ballesteros, R.
PY - 2012/8/15
Y1 - 2012/8/15
N2 - A new mathematic model to estimate bed porosity as a function of Reynolds and Archimedes numbers was developed based in experimental data. Experiments were performed using an inverse fluidized bed bioreactor filled with polypropylene particles, Lactobacillus acidophillus as the immobilized strain and fluidized with a Man-Rogosa-Sharpe culture medium under controlled temperature and pH conditions. Bed porosity was measured at different flow rates, starting from 0.95 to 9.5 LPM. The new model has several advantages when compared with previously reported. Among them, advantages such as standard deviation values ≤1% between experimental and calculated bed porosity, its applicability in traditional and inverse fluidization, wall effects do not take account, it gives excellent agreement with spherical particles with or without biofilm, and inertial drag coefficient allow extend the new model a non-spherical particles.
AB - A new mathematic model to estimate bed porosity as a function of Reynolds and Archimedes numbers was developed based in experimental data. Experiments were performed using an inverse fluidized bed bioreactor filled with polypropylene particles, Lactobacillus acidophillus as the immobilized strain and fluidized with a Man-Rogosa-Sharpe culture medium under controlled temperature and pH conditions. Bed porosity was measured at different flow rates, starting from 0.95 to 9.5 LPM. The new model has several advantages when compared with previously reported. Among them, advantages such as standard deviation values ≤1% between experimental and calculated bed porosity, its applicability in traditional and inverse fluidization, wall effects do not take account, it gives excellent agreement with spherical particles with or without biofilm, and inertial drag coefficient allow extend the new model a non-spherical particles.
KW - Biofilm
KW - Fluid bed porosity mathematical model
KW - Fluidized bed bioreactor
KW - Inverse fluidization
KW - Lactobacillus acidophilus
UR - http://www.scopus.com/inward/record.url?scp=84860617490&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2012.03.019
DO - 10.1016/j.jenvman.2012.03.019
M3 - Artículo
C2 - 22484706
AN - SCOPUS:84860617490
SN - 0301-4797
VL - 104
SP - 62
EP - 66
JO - Journal of Environmental Management
JF - Journal of Environmental Management
ER -