Biohydrogen from Wastewater: Hybrid Fermentation-MEC-UASB Approach
Executive Summary Biohydrogen from wastewater: Wastewater contains energy in its organic matter, measured as COD. Most treatment plants...
Normalised Biogas Yield
Raw biogas production volume is the most commonly monitored gas-phase parameter in operating digester, and the least sensitive...
VFA/Alkalinity Ratio and Biogas Composition Monitoring
The VFA/alkalinity (FOS/TAC) ratio is the most sensitive daily early warning parameter for anaerobic process stability. Online biogas...
Recovering a Sour Anaerobic Digester
Recovery from a sour anaerobic digester is governed by the growth kinetics of the slowest organisms in the...
Diagnosing a Sour Anaerobic Digester
When an anaerobic digester sours, the first and most important task is not to begin recovery; it is...
Two-Stage Reactor Design
The most effective engineering response to the kinetic asymmetry between anaerobic digestion stages is a design that physically...
The Four Stages of Anaerobic Digestion
Anaerobic digestion is a four-stage biochemical cascade, each stage carried out by a distinct microbial community with its...
Biological Treatment — Aerobic & Anoxic
Why your DO setpoint may be costing you more than you think — and how to fix it...