Related Experiment Video
Updated: Apr 20, 2026

A Protocol for Collecting and Constructing Soil Core Lysimeters
Published on: June 6, 2016
Recovery of phosphorus from dairy manure: a pilot-scale study
Hui Zhang1, Victor K Lo, James R Thompson
1a Department of Civil Engineering , University of British Columbia , 6250 Applied Science Lane, Vancouver , British Columbia , Canada.
This study recovers phosphorus from dairy manure using microwave-enhanced advanced oxidation (MW/H2O2-AOP) and struvite crystallization. The process significantly increases soluble phosphorus and recovers nearly 95% of it as struvite.
Area of Science:
- Environmental Science
- Chemical Engineering
- Agricultural Science
Background:
- Dairy manure presents a significant source of phosphorus, contributing to environmental pollution.
- Efficient phosphorus recovery from manure is crucial for sustainable agriculture and nutrient management.
Purpose of the Study:
- To develop and pilot-test a method for phosphorus recovery from dairy manure.
- To optimize the microwave-enhanced advanced oxidation process (MW/H2O2-AOP) and subsequent struvite crystallization.
Main Methods:
- Dairy manure underwent microwave-enhanced advanced oxidation with hydrogen peroxide.
- Supernatant was treated with oxalic acid to remove calcium.
- Struvite crystallization was performed on the treated supernatant.
Main Results:
- MW/H2O2-AOP increased soluble phosphorus by over 50% and improved solid-liquid separation.
- Optimal conditions for supernatant yield were 0.3% hydrogen peroxide and pH 3.5.
- Oxalic acid treatment removed ~90% of calcium while retaining magnesium.
- Nearly 95% of phosphorus was recovered as struvite from the treated supernatant.
Conclusions:
- The integrated MW/H2O2-AOP and struvite crystallization process is effective for phosphorus recovery from dairy manure.
- This method offers a promising solution for nutrient recycling and reducing environmental impact from livestock waste.
More Related Videos
06:42Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment
Published on: July 22, 2019
08:21Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method
Published on: May 18, 2018
Related Concept Videos
The Phosphorus Cycle
Production of Organic Acids
Factors Affecting Solubility