Microfluidic study of effects of flow velocity and nutrient concentration on biofilm accumulation and adhesive strength in the flowing and no-flowing microchannels.
Biofilm accumulation in porous media can cause pore plugging and change many of the physical properties of porous media. Engineering bioplugging may have significant applications for many industrial processes, while improved knowledge on biofilm accumulation in porous media at porescale in general has broad relevance for a range of industries as well as environmental and water research. The experimental results by means of microscopic imaging over a T-shape microchannel clearly show that increase in fluid velocity could facilitate biofilm growth, but that above a velocity threshold, biofilm detachment and inhibition of biofilm formation due to high shear stress were observed. High nutrient concentration prompts the biofilm growth; however, the generated biofilm displays a weak adhesive strength. This paper provides an overview of biofilm development in a hydrodynamic environment for better prediction and modelling of bioplugging processes associated with porous systems in petroleum industry, hydrogeology and water purification.
['Liu|Na|N|', 'Skauge|Tormod|T|', 'Landa-Marbán|David|D|', 'Hovland|Beate|B|', 'Thorbjørnsen|Bente|B|', 'Radu|Florin Adrian|FA|', 'Vik|Bartek Florczyk|BF|', 'Baumann|Thomas|T|', 'Bødtker|Gunhild|G|']
D001422:Bacterial Adhesion D001431:Bacteriological Techniques D018441:Biofilms D057446:Hydrodynamics D044085:Microfluidics D018613:Microscopy, Confocal D000078622:Nutrients D060888:Real-Time Polymerase Chain Reaction D013314:Stress, Mechanical D014872:Water Movements D018508:Water Purification
Microfluidics Flow velocity Nutrient concentration Biofilm accumulation Adhesive strength