Abstract
Effect of Acid Whey Addition for Sewage Sludge Co-Digestion on the Nitrogen and Phosphorus Release
Highlights
Anaerobic digestion (AD) is considered the most effective method of waste activated sludge management due to the environmental and economic benefits
The results show a slight increase in total nitrogen concentration in the feedstock when compared to the control samples (Fig. 1a)
It should be noticed that the sewage sludge (SS) characteristics varied throughout the experiments, as well as acid cheese whey (ACW) composition differed between the experiment 1 and 2
Summary
Anaerobic digestion (AD) is considered the most effective method of waste activated sludge management due to the environmental and economic benefits. It provides both safe and costeffective sludge stabilization and ensures clean energy production [Kim et al, 2013, Feki et al, 2020]. An effective way to improve the biogas production efficiency is the co-digestion of multiple substrates with complementary characteristics. Due to the high organic content and high biogas potential, cheese whey (CW) can be used as a substrate in the anaerobic digestion process
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