Abstract
The effect of graphite surface roughness on the immobilization of Acidithiobacillus ferrooxidans was studied. It was found that the most appropriate surface roughness was obtained by polishing graphite discs with 1500 grit polishing paper. After 24 h of inoculation this roughness had coverage of 25 × 10 3 cells/mm 2. The effects of different types of activated carbon fibers (felt versus fabric; both silicated and non-silicated) on the immobilization of A. ferrooxidans were also experimentally studied. In non-silicated samples the activated carbon fiber support with the greatest surface area per gram (felt) lead to the greatest number of immobilized microorganisms over a 12 h period (29 × 10 3 cells/mm 2). The addition of SiO 2 particles to the activated carbon fiber supports considerably enhanced cell adhesion on both activated carbon felt and fabric. Furthermore, the silicated felt exhibited the greatest number of immobilized A. ferrooxidans cells of all activated carbon fiber preparations studied (36 × 10 3 cells/mm 2).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
