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Evaluation of the Efficacy of Organic Peroxyacids for Eradicating Dairy Biofilms Using an Approach Combining Static and Dynamic Methods
Published on: December 9, 2022
Microwave enhanced advanced oxidation process for treating dairy manure at low pH
Kwang V Lo1, Winnie W I Chan, Selina K Yawson
1Department of Civil Engineering, University of British Columbia, Vancouver, British Columbia, Canada. kvlo@civil.ubc.ca
Summary
Microwave-enhanced advanced oxidation process (MW-AOP) effectively treats dairy manure, optimizing sugar production and nutrient release. This method enhances nutrient solubilization and solids disintegration for efficient waste management.
Area of Science:
- Environmental Science
- Chemical Engineering
- Waste Management
Background:
- Dairy manure poses environmental challenges due to its high organic content and nutrient load.
- Effective treatment methods are crucial for nutrient recovery and pollution reduction.
Purpose of the Study:
- To investigate the efficacy of microwave-enhanced advanced oxidation process (MW-AOP) for dairy manure treatment.
- To optimize conditions for sugar production, nutrient release, and solids destruction.
Main Methods:
- Utilized response surface methodology for experimental design.
- Investigated the effects of temperature, hydrogen peroxide dosage, and heating time at pH 2.
- Analyzed sugar production, soluble chemical oxygen demand (SCOD), volatile fatty acids (VFA), orthophosphate, and ammonia release.
Main Results:
- Highest reducing sugar yield (7.4%) achieved at 160°C with no hydrogen peroxide addition.
- Temperature significantly increased SCOD and VFA production.
- Orthophosphate and ammonia release were maximized at 160°C, 0.5 mL H(2)O(2), and 15 min heating time, with increases of 96% and 196%, respectively.
Conclusions:
- MW-AOP is a viable method for dairy manure treatment.
- The process facilitates sugar production, nutrient solubilization, and solids disintegration.
- Optimized conditions can maximize desired outputs like sugar and nutrient recovery.
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