[Digestion] BioFilms

Andrew James Ward andrew.ward at adelaide.edu.au
Wed Apr 9 18:12:59 MDT 2014

I think thinking about the material used in a digester is going to far. I understand that you may want to add material to the  digesters as substrate or scaffold allowing bacterial to attach to this. these type of digesters are referred to as packed bed reactors and you may find more info searching for these in literature. these types of setups are ideal for wastes that have a very low solids contents. if you were looking at a material to attract a specific bacteria then you would need to know the charge associated with the bacteria and find a material with an opposite charge so as to attract the bacteria, however due to the nature of anaerobic digestion bacteria and the diversity found within this bacterial community matching a coating with a specific charge is not ideal as it will more than likely only attract a specific bacteria and you are actually after a diverse population within a digester. I would actually go for a high matrix substrate that had a high surface area this will allow more bacteria to attach to the surfaces. have a look at some of the media that goes into a standard trickle filter for example bio-balls as these have been designed to have a high surface area compared to there volume. hope this helps a little

    cheers andrew

Andrew Ward

School of Chemical Engineering
The University of Adelaide, Australia 5005
Room NM10 Engineering north
laboratory NG15(Biochemical and Fermentation Lab)

Phone: +61 8 83133150
Fax:   +61 8 8313 4373
Mobile: 0410 389 528
E-mail: andrew.ward at adelaide.edu.au<mailto:andrew.ward at adelaide.edu.au>

From: Digestion [digestion-bounces at lists.bioenergylists.org] on behalf of Prabhu Govindarajan [prabhu.govvindarajan at gmail.com]
Sent: Wednesday, 9 April 2014 11:20 PM
To: digestion at lists.bioenergylists.org
Subject: [Digestion] BioFilms

   Is there any material coating which can enhance BioFilms inside the digester ?


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