Liquid Flow in Biofilm Systems

Applied and Environmental Microbiology, Journal Year: 1994, Volume and Issue: 60(8), P. 2711 - 2716

Published: Aug. 1, 1994

A model biofilm consisting of Pseudomonas aeruginosa, fluorescens , and Klebsiella pneumoniae was developed to study the relationships between structural heterogeneity hydrodynamics. Local fluid velocity in system measured by a noninvasive method particle image velocimetry, using confocal scanning laser microscopy. Velocity profiles were conduit porous medium reactors presence absence biofilm. Liquid flow observed within channels; simultaneous imaging allowed liquid be related physical structure

Language: Английский

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Biofiltration of toluene vapor under steady-state and transient conditions: Theory and experimental results

Chemical Engineering Science, Journal Year: 1994, Volume and Issue: 49(24), P. 4347 - 4360

Published: Jan. 1, 1994

Language: Английский

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Analysis of cell growth kinetics and substrate diffusion in a polymer scaffold

Biotechnology and Bioengineering, Journal Year: 1999, Volume and Issue: 65(2), P. 121 - 132

Published: Oct. 20, 1999

The cultivation of cartilage cells (chondrocytes) in polymer scaffolds leads to implants that may potentially be used repair damaged joint or for reconstructive surgery. For this technique medically applicable, the physical parameters govern cell growth a scaffold must understood. This understanding behavior under vitro conditions, where diffusion is primary mode transport nutrients, aid scale-up generation process. A mathematical model chondrocyte and nutrient consumption developed here analyze biodegradable matrix series different thickness polymers. Recent literature has implied nutrients major factor limits (Freed et al., 1994). In present paper, directly relate effects increasing mass on nutrients. Reaction cell–polymer system are described using fundamental species continuity equations volume averaging method. method utilized derive single averaged equation includes effective properties. approach allows derivation rate coefficients as functions fraction. fraction function time determined by solution material balance mass. Growth including Moser, modified Contois, an nth-order heterogeneous kinetic evaluated through parameter analysis, results compared experimental data found literature. indicate cellular conjunction with transfer processes can account partially general trends various Contois appeared describe more accurately terms lag period at early times long limits. However, all required variations fully thickness. result implies restricted not sole limiting when changed. Therefore, further improvements needed © 1999 John Wiley & Sons, Inc. Biotechnol Bioeng 65: 121–132, 1999.

Language: Английский

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Mass transfer kinetics of Cd(II) ions adsorption by titania polyvinylalcohol-alginate beads from aqueous solution

Chemical Engineering Journal, Journal Year: 2016, Volume and Issue: 308, P. 700 - 709

Published: Sept. 23, 2016

Language: Английский

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Bioavailability of Hydrophobic Organic Contaminants: Effects and Implications of Sorption‐Related Mass Transfer on Bioremediation

Groundwater Monitoring & Remediation, Journal Year: 1998, Volume and Issue: 18(1), P. 126 - 138

Published: Feb. 1, 1998

Abstract The low bioavailability of hydrophobic organic compounds (HOCs) is one the key sources uncertainty in implementation situ bioremediation. Bioavailability HOCs subsurface affected by sorption/desorption processes two important ways. First, sorption causes high concentrations microporous regions and impermeable zones to which bacterial access obstructed. Second, because desorption immobile zone diffusion must occur before biodegradation can proceed, overall rate bioremediation be limited or even controlled these mass transfer processes, not activity degrading microorganisms. Rate models that couple sorption/desorption—related have been successfully applied laboratory results are beginning offer some insight into problem. Specifically, influence on quantified here defining a factor, B f . However, many questions remain predictive modeling elusive, especially context complicated heterogeneous natural systems. Challenges facing environmental engineers develop better understanding at both field scales ultimately use such toward development more effective economical remediation technologies.

Language: Английский

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Nitrification by immobilized cells

Enzyme and Microbial Technology, Journal Year: 1995, Volume and Issue: 17(6), P. 482 - 492

Published: June 1, 1995

Language: Английский

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A plug flow-through reactor for studying biogeochemical reactions in undisturbed aquatic sediments

Applied Geochemistry, Journal Year: 1998, Volume and Issue: 13(2), P. 269 - 280

Published: March 1, 1998

Language: Английский

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Kinetics and mass transfer studies on the biosorption of organic matter from palm oil mill effluent by aerobic granules before and after the addition of Serratia marcescens SA30 in a sequencing batch reactor

Process Safety and Environmental Protection, Journal Year: 2017, Volume and Issue: 107, P. 259 - 268

Published: Feb. 28, 2017

Language: Английский

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Mass transfer kinetics of phosphorus biosorption by aerobic granules

Journal of Water Process Engineering, Journal Year: 2019, Volume and Issue: 31, P. 100889 - 100889

Published: July 10, 2019

Language: Английский

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Fundamentals of mass transfer and kinetics for biosorption of oil and grease from agro-food industrial effluent by Serratia marcescens SA30

RSC Advances, Journal Year: 2015, Volume and Issue: 5(127), P. 104666 - 104673

Published: Jan. 1, 2015

Biosorption mechanisms of oil and grease removal bySerratia marcescensSA30 from agro-food industrial effluent, attached on the palm frond.

Language: Английский

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