Characterization of compost produced from separated pig manure and a variety of bulking agents at low initial C/N ratios

Tereza Nolan; Shane M. Troy; Mark G. Healy; Witold Kwapinski; James J. Leahy; Peadar G. Lawlor

doi:10.1016/j.biortech.2011.04.066

Characterization of compost produced from separated pig manure and a variety of bulking agents at low initial C/N ratios

Tereza Nolan, Shane M. Troy, Mark G. Healy, Witold Kwapinski, James J. Leahy, Peadar G. Lawlor

Research output: Contribution to journal › Article › peer-review

Abstract

The aim of this study was to investigate the composting of separated pig manure solids with or without a variety of bulking agents at a low initial C/N ratio (12.5-23.3). Compost stability was investigated using an oxygen uptake rate (OUR) test and compost maturity was investigated using a germination index test. All treatments showed typical patterns of compost temperature. Temperatures above 60°C were achieved by Day 2, followed by a thermophilic phase (50-60°C), which lasted for 1 to 2weeks followed by a cooling phase. The stability of one of treatments which did not contain any bulking agent - OUR of 25mmol O₂kg^-1OMhour^-1 - was negatively affected by its initial high water content (69%). The addition of a bulking agent and initial water content below 60% were necessary to compost the separated solid fraction of pig manure at a low initial C/N ratio.

Original language	English
Pages (from-to)	7131-7138
Number of pages	8
Journal	Bioresource Technology
Volume	102
Issue number	14
DOIs	https://doi.org/10.1016/j.biortech.2011.04.066
Publication status	Published - Jul 2011

Keywords

Decanter centrifuge
Germination
Oxitop system
Oxygen uptake rate
Swine

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2011.04.066

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title = "Characterization of compost produced from separated pig manure and a variety of bulking agents at low initial C/N ratios",

abstract = "The aim of this study was to investigate the composting of separated pig manure solids with or without a variety of bulking agents at a low initial C/N ratio (12.5-23.3). Compost stability was investigated using an oxygen uptake rate (OUR) test and compost maturity was investigated using a germination index test. All treatments showed typical patterns of compost temperature. Temperatures above 60°C were achieved by Day 2, followed by a thermophilic phase (50-60°C), which lasted for 1 to 2weeks followed by a cooling phase. The stability of one of treatments which did not contain any bulking agent - OUR of 25mmol O2kg-1OMhour-1 - was negatively affected by its initial high water content (69%). The addition of a bulking agent and initial water content below 60% were necessary to compost the separated solid fraction of pig manure at a low initial C/N ratio.",

keywords = "Decanter centrifuge, Germination, Oxitop system, Oxygen uptake rate, Swine",

author = "Tereza Nolan and Troy, {Shane M.} and Healy, {Mark G.} and Witold Kwapinski and Leahy, {James J.} and Lawlor, {Peadar G.}",

year = "2011",

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AU - Troy, Shane M.

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AU - Kwapinski, Witold

AU - Leahy, James J.

AU - Lawlor, Peadar G.

PY - 2011/7

Y1 - 2011/7

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KW - Decanter centrifuge

KW - Germination

KW - Oxitop system

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ER -

Characterization of compost produced from separated pig manure and a variety of bulking agents at low initial C/N ratios

Abstract

Keywords

UN SDGs

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