Hi all, I'm looking for some advice and was wondering if you can help me? I'm working on the anaerobic fermentation of MSW using a dry batch system. I'm having a problem with falling biogas levels. The pH of the system is stable (around 7.1-7.4) and so it's not the 'usual' build up of acids. I believe that it may possibly be due either: 1. A build up of NH3 in the system or 2. Salt toxicity due to low moisture levels With this in mind I am looking for some laboratory methods (tried and tested) to test for both of these parameters (and TKN). The samples are very 'thick' so I guess some type of extraction is called for. Has anyone had experience of such systems or know a suitable procedure/s. I look forward to your replies, Tina :0) - Bioenergy List Archives: http://www.crest.org/discussion/bioenergy/200202/ Bioenergy List Moderator: Tom Miles, tmiles@trmiles.com List-Post: <mailto:bioenergy@crest.org> List-Help: <mailto:bioenergy-help@crest.org> List-Unsubscribe: <mailto:bioenergy-unsubscribe@crest.org> List-Subscribe: <mailto:bioenergy-subscribe@crest.org> Sponsor the Bioenergy List: http://www.crest.org/discuss3.html - Other Bioenergy Events and Information: http://www.bioenergy2002.org http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy http://www.crest.org/articles/static/1/1011975339_7.html Gasification http://www.crest.org/articles/static/1/1011975672_7.html Carbon
