Wednesday, June 5, 2013

Kevin why doesnt the catlitter become clogged by the bacteria’s polymeric adhesive over time?

               Originally Posted by reefmonkey  on KKU

Kevin why doesnt the catlitter become clogged by the bacteria’s polymeric adhesive over time?

The polymeric adhesive from bacteria that often will adhere to most aquatic surfaces form very complex and heterogeneous microbial communities called “biofilms”. Sometimes these biofilms are beneficial to a system, like that; that you see in pipes and in other circumstances they are undesirable and will clog filter elements to the point of hindering, channeling and even stopping altogether water flow. The truth be told, the direct prevention of bacterial adhesion and the formation of undesirable biofilms in our filter would lessen the likelihood of clogging of micro-particles on those substrates or mediums. For the hobbyist understanding the subsequent formation of friendly biofilm formation and their development are crucial in that they will inhibit the formation of undesirable biofilms and promoting the establishment of useful biofilms.
         However, undesirable biofilms are indistinguishable from good mature biofilms that are localized groups of bacterial cells on filter medium that produce extracellular polymeric substances to form good mature biofilm. There is a link between the initially adhering bacteria and the biofilms that subsequently form. Understanding the physiological chemical properties of the medium e.g. surface area potential, its roughness, pore structure and hydrophobicity will affect the rate of initial bacterial adhesion and subsequently the formation of biofilm if it’s needed or not for cell reproduction utilization. The mechanism of initial biofilm formation is useful in the understanding the inhibiting or the promotion of the formation of biofilms. By the modification of a specialized surfaces (like that of cat litter) and /or chemical grafting have been used to inhibit the promoting of bacterial adhesion of mature biofilm formation. This relationship between bacterial cells and surfaces change with positively or negatively charged substrates modifies the fictionalization and improves important properties such as the ability to attract bacterial cells. Most bacterial adhesion is for the prevention of water-shear from fluid dynamics, which is limited in the Biocenosis Baskets because fluids move very slowly.
           So now you understand, the electrical charge of the substrate and the movement of fluids through that substrate, and the substrate itself, influences the strategies for controlling biofilms. 

Dr. Lio Fornellino the best friend I never knew that did
 extensive testing on the Anoxic Filtration System in Italy.

Anoxic Filtration Book... Still free on Apple's iBook store

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