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Research Results on Renewable Uses for Pig Manure

Increasing the amount of energy produced from renewable sources is a stated objective of the EU. Anaerobic Digestion, as investigated in this project, can extract energy from animal and plant biomass, while still retaining the nutritive value of the material as fertiliser.

This project looked at reducing the greenhouse gas emissions from stored pig manure, by capturing methane during anaerobic digestion which would otherwise be produced naturally in storage under anaerobic conditions.

In addition, production of renewable energy from pig manure is carbon neutral and offsets carbon dioxide that would otherwise be produced by fossil fuels, thus helping to meet Ireland’s targets to reduce CO2 emissions. Anaerobic digestion can also help reduce pathogen levels in pig manure.

However, it is important to be aware that anaerobic digestion does not reduce the P and N content of manure. Moreover, as the manure will most likely be co digested with other biomass the N and P content of the digested material will likely be even higher than that of the raw manure.

Table of Contents

Authors and Affiliations

Introduction

Research Papers
Methane Production from Anaerobic Co-Digestion of the Separated Solid Fraction of Pig Manure with Dried Grass Silage

Solid-Liquid Separation of Pig Manure

Composting Separated Solids of Pig Manure

Pyrolysis of Separated Solids of Pig Manure

Treatment of Piggery Wastewaters Using Constructed Wetlands

Treatment of Piggery Wastewaters Using Woodchip Biofilters

Composting as a Treatment Strategy for Pathogen Removal from the Solid Fraction of Pig Manure

Integrated Constructed Wetlands as a Treatment Strategy for Pathogen Removal from the Liquid Fraction of Pig Manure and Agricultural Wastewater

Cost Analyses of the Manure Treatment Options Investigated

Summary papers

List of Publications to Date

Further Reading

- You can view the full report by clicking here.

December 2011

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