How to measure pH in anaerobic digester?

10 February 2021 1 2K Report

I'm planning on doing research by using anaerobic digester with liquid substrate and want to see its pH changes periodically. Any suggestion on measuring the pH with maintaining its anaerobic condition? Thanks.

Kien Vu

There are two ways to measure pH in the anaerobic digester:

1. Measure carbonate/bicarbonate, and use the graph of carbonate-pH to determine the corresponding pH. You can see this graph in many articles.

See the paper below for more details:

Article Sensors for Anaerobic Digestion: An overview

2. Use a pH electrode. See the paper below:

Article Continuous pH measurement for anaerobic digestion

Regards,

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