Path: utzoo!utgpu!watmath!iuvax!bionet!com.qz.se!P2269 From: P2269@com.qz.se ("ENG-LEONG FOO ", MIRCEN-STOCKHOLM) Newsgroups: bionet.technology.conversion Subject: BIOGAS: online monitoring of gas composition Message-ID: <8904041637.AA16724@net.bio.net> Date: 4 Apr 89 09:58:00 GMT References: <8903310315.AA21612@kth.se> Sender: daemon@NET.BIO.NET Reply-To: "Anaerobic Digestion (MIRCEN) Technical" Lines: 20 The composition of biogas which is generated during methane fermentation can vary and to certain extent also with the type of substrate used. Could you (Jon Iza, Environ Eng. Prog. Univ of Mass.) please elaborate further on the criteria for setting the limits for the different gases; are they different for the same substrate but different reactors; what triggers changes in the gas composition? To Other Readers: ---------------- Is there anyone who has knowledge in online warning systems for fermentation processes ? The indicator could be a gas, pH change, etc. I wonder if there are developed systems where action to a warning signal (relayed to the researcher's home) could be corrected by a terminal link-up from home to the host computer at the lab. ? This would certainly be welcomed by researchers as well as the industry. From: Eng-leong Foo, MIRCEN-Stockholm, Sweden