Temperature Effects on Acidogenic Anaerobic Digestion of Municipal Wastewater: Organic Carbon Kinetics and VFA Production

 

1. Introduction

Acidogenic anaerobic digestion is a fundamental stage in biological wastewater treatment, where complex organic matter is converted into volatile fatty acids through microbial metabolism. Temperature significantly influences microbial growth rates, enzyme activity, and organic carbon degradation kinetics. This research introduces temperature-controlled experimental studies to evaluate how mesophilic and thermophilic conditions affect VFA production and nutrient removal efficiency in municipal wastewater systems. Understanding these mechanisms is essential for optimizing process stability and improving resource recovery in sustainable wastewater treatment infrastructures.

2. Temperature Influence on Organic Carbon Degradation Kinetics

This topic explores how temperature variations alter reaction rate constants, substrate utilization efficiency, and microbial metabolic pathways in acidogenic digestion systems. Kinetic modeling approaches are applied to quantify degradation rates under different thermal regimes.

3. Volatile Fatty Acid Production and Process Optimization

The formation of VFAs such as acetate, propionate, and butyrate is analyzed under controlled temperature conditions. This research investigates yield optimization, process stability, and operational parameters that enhance biochemical production efficiency.

4. Microbial Community Dynamics in Acidogenic Systems

Temperature shifts significantly impact microbial population structures and enzymatic activity. This topic discusses microbial adaptation mechanisms and community analysis techniques used to evaluate system resilience and performance.

5. Nutrient Removal and Resource Recovery Implications

Enhanced acidogenic activity influences nitrogen and phosphorus transformation pathways. The research evaluates how optimized temperature conditions improve nutrient recovery while supporting downstream biological treatment stages.

6. Sustainable Wastewater Treatment and Future Technological Developments

The final topic examines the integration of acidogenic digestion into circular economy frameworks, including bioenergy production, carbon footprint reduction, and advanced bioreactor design for climate-adaptive wastewater treatment systems.


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