Path: utzoo!utgpu!watmath!iuvax!bionet!ecs.umass.edu!IZA
From: IZA@ecs.umass.edu ("Jon Iza, Envir.Eng.Program UMASS")
Newsgroups: bionet.technology.conversion
Subject: RE: BIOGAS: online monitoring of gas composition
Message-ID: <8904111036.AA21645@net.bio.net>
Date: 8 Apr 89 19:05:00 GMT
References: <408828@QZCOM>
Sender: daemon@NET.BIO.NET
Reply-To: "Jon Iza, Envir.Eng.Program UMASS" <IZA@ecs.umass.edu>,
        "Anaerobic Digestion (MIRCEN) Technical" <C82@com.qz.se>
Lines: 11

Subject: On-line gas monitoring for AD

The monitored gases are  Hydrogen and Carbon Monoxide. Both are trace
gases, with typical levels in the order of ppm for H2 and ppb for CO.
Reactor upsets produce big increases in H2 concentration, but the
changes are rather fast and inconsistent. The simultaneous measurement
of CO concentration helps to screen the data and get a good feeling of
what is going on. We here (Prof. Switzenbaum, E. Giraldo and I) we are
trying to create a big database of information collected during
experiments with spikes of toxicants and/or organic and hydraulic
overloads, to get a better knowledge of the process.