Journal
BIORESOURCE TECHNOLOGY
Volume 337, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125328
Keywords
Ammonia inhibition; Chicken manure; Biogas; Anaerobic digestion; Response surface methodology (RSM)
Funding
- Federal Ministry for Economic Affairs and Energy (BMWi) [03 KB137]
- Germany academic exchange center (DAAD) [201806350287]
- China scholarship council (CSC)
Ask authors/readers for more resources
The study demonstrates that TAN concentration, temperature, and pH have significant impacts on ammonia inhibition in anaerobic digestion, with interactions between these parameters playing a role in influencing performance.
Ammonia inhibition is the most challenging issue in the anaerobic digestion (AD) of nitrogen-rich substrates. Total ammonia nitrogen (TAN) concentration, temperature and pH are the main operational parameters affecting the chemical equilibrium between free ammonium nitrogen (NH3; FAN) and ammonium ions (NH4+). However, it is still unclear how these parameters together affect digestion performance by influencing this equilibrium. To determine the effect and linkages of these parameters, a Box-Behnken design-response surface methodology (RSM), correlation analysis and two kinetic models were carried out. The results revealed that the linear effect of TAN, the interaction effect between TAN and temperature, and temperature and pH were significant, however, the quadratic effect of TAN, temperature and pH were also significant. Furthermore, TAN and temperature were positively correlated with Mmax, k and Rmax. Findings from this study could provide a theoretical basis to develop the way of relieving ammonia inhibition.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available