Effect of biochar amendment on compost organic matter composition following aerobic compositing of manure

Nikolas Hagemann, Edisson Subdiaga, Silvia Orsetti, José María de la Rosa, Heike Knicker, Hans Peter Schmidt, Andreas Kappler, Sebastian Behrens

Research output: Contribution to journalArticle

  • 4 Citations

Abstract

Biochar, a material defined as charred organic matter applied in agriculture, is suggested as a beneficial additive and bulking agent in composting. Biochar addition to the composting feedstock was shown to reduce greenhouse gas emissions and nutrient leaching during the composting process, and to result in a fertilizer and plant growth medium that is superior to non-amended composts. However, the impact of biochar on the quality and carbon speciation of the organic matter in bulk compost has so far not been the focus of systematic analyses, although these parameters are key to determine the long-term stability and carbon sequestration potential of biochar-amended composts in soil. In this study, we used different spectroscopic techniques to compare the organic carbon speciation of manure compost amended with three different biochars. A non-biochar-amended compost served as control. Based on Fourier-transformed infrared (FTIR) and 13C nuclear magnetic resonance (NMR) spectroscopy we did not observe any differences in carbon speciation of the bulk compost independent of biochar type, despite a change in the FTIR absorbance ratio 2925 cm− 1/1034 cm− 1, that is suggested as an indicator for compost maturity. Specific UV absorbance (SUVA) and emission-excitation matrixes (EEM) revealed minor differences in the extractable carbon fractions, which only accounted for ~ 2–3% of total organic carbon. Increased total organic carbon content of biochar-amended composts was only due to the addition of biochar-C and not enhanced preservation of compost feedstock-C. Our results suggest that biochars do not alter the carbon speciation in compost organic matter under conditions optimized for aerobic decomposition of compost feedstock. Considering the effects of biochar on compost nutrient retention, mitigation of greenhouse gas emissions and carbon sequestration, biochar addition during aerobic composting of manure might be an attractive strategy to produce a sustainable, slow release fertilizer.

LanguageEnglish (US)
Pages20-29
Number of pages10
JournalScience of the Total Environment
Volume613-614
DOIs
StatePublished - Feb 1 2018

Fingerprint

Manures
Biological materials
compost
manure
Composting
organic matter
Carbon
Organic carbon
Chemical analysis
Feedstocks
Fertilizers
Gas emissions
composting
Greenhouse gases
Nutrients
Infrared radiation
carbon
absorbance
carbon sequestration
Agriculture

Keywords

  • Amazonian Dark Earth
  • EEM
  • Electron exchange capacity
  • FTIR
  • Farmyard manure
  • Humic substances
  • NMR
  • Pyrogenic organic carbon
  • Sewages sludge char

Cite this

Effect of biochar amendment on compost organic matter composition following aerobic compositing of manure. / Hagemann, Nikolas; Subdiaga, Edisson; Orsetti, Silvia; de la Rosa, José María; Knicker, Heike; Schmidt, Hans Peter; Kappler, Andreas; Behrens, Sebastian.

In: Science of the Total Environment, Vol. 613-614, 01.02.2018, p. 20-29.

Research output: Contribution to journalArticle

Hagemann, Nikolas ; Subdiaga, Edisson ; Orsetti, Silvia ; de la Rosa, José María ; Knicker, Heike ; Schmidt, Hans Peter ; Kappler, Andreas ; Behrens, Sebastian. / Effect of biochar amendment on compost organic matter composition following aerobic compositing of manure. In: Science of the Total Environment. 2018 ; Vol. 613-614. pp. 20-29.
@article{dc3b83b90ea8477489461b29815b8d31,
title = "Effect of biochar amendment on compost organic matter composition following aerobic compositing of manure",
abstract = "Biochar, a material defined as charred organic matter applied in agriculture, is suggested as a beneficial additive and bulking agent in composting. Biochar addition to the composting feedstock was shown to reduce greenhouse gas emissions and nutrient leaching during the composting process, and to result in a fertilizer and plant growth medium that is superior to non-amended composts. However, the impact of biochar on the quality and carbon speciation of the organic matter in bulk compost has so far not been the focus of systematic analyses, although these parameters are key to determine the long-term stability and carbon sequestration potential of biochar-amended composts in soil. In this study, we used different spectroscopic techniques to compare the organic carbon speciation of manure compost amended with three different biochars. A non-biochar-amended compost served as control. Based on Fourier-transformed infrared (FTIR) and 13C nuclear magnetic resonance (NMR) spectroscopy we did not observe any differences in carbon speciation of the bulk compost independent of biochar type, despite a change in the FTIR absorbance ratio 2925 cm− 1/1034 cm− 1, that is suggested as an indicator for compost maturity. Specific UV absorbance (SUVA) and emission-excitation matrixes (EEM) revealed minor differences in the extractable carbon fractions, which only accounted for ~ 2–3{\%} of total organic carbon. Increased total organic carbon content of biochar-amended composts was only due to the addition of biochar-C and not enhanced preservation of compost feedstock-C. Our results suggest that biochars do not alter the carbon speciation in compost organic matter under conditions optimized for aerobic decomposition of compost feedstock. Considering the effects of biochar on compost nutrient retention, mitigation of greenhouse gas emissions and carbon sequestration, biochar addition during aerobic composting of manure might be an attractive strategy to produce a sustainable, slow release fertilizer.",
keywords = "Amazonian Dark Earth, EEM, Electron exchange capacity, FTIR, Farmyard manure, Humic substances, NMR, Pyrogenic organic carbon, Sewages sludge char",
author = "Nikolas Hagemann and Edisson Subdiaga and Silvia Orsetti and {de la Rosa}, {Jos{\'e} Mar{\'i}a} and Heike Knicker and Schmidt, {Hans Peter} and Andreas Kappler and Sebastian Behrens",
year = "2018",
month = "2",
day = "1",
doi = "10.1016/j.scitotenv.2017.08.161",
language = "English (US)",
volume = "613-614",
pages = "20--29",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

TY - JOUR

T1 - Effect of biochar amendment on compost organic matter composition following aerobic compositing of manure

AU - Hagemann, Nikolas

AU - Subdiaga, Edisson

AU - Orsetti, Silvia

AU - de la Rosa, José María

AU - Knicker, Heike

AU - Schmidt, Hans Peter

AU - Kappler, Andreas

AU - Behrens, Sebastian

PY - 2018/2/1

Y1 - 2018/2/1

N2 - Biochar, a material defined as charred organic matter applied in agriculture, is suggested as a beneficial additive and bulking agent in composting. Biochar addition to the composting feedstock was shown to reduce greenhouse gas emissions and nutrient leaching during the composting process, and to result in a fertilizer and plant growth medium that is superior to non-amended composts. However, the impact of biochar on the quality and carbon speciation of the organic matter in bulk compost has so far not been the focus of systematic analyses, although these parameters are key to determine the long-term stability and carbon sequestration potential of biochar-amended composts in soil. In this study, we used different spectroscopic techniques to compare the organic carbon speciation of manure compost amended with three different biochars. A non-biochar-amended compost served as control. Based on Fourier-transformed infrared (FTIR) and 13C nuclear magnetic resonance (NMR) spectroscopy we did not observe any differences in carbon speciation of the bulk compost independent of biochar type, despite a change in the FTIR absorbance ratio 2925 cm− 1/1034 cm− 1, that is suggested as an indicator for compost maturity. Specific UV absorbance (SUVA) and emission-excitation matrixes (EEM) revealed minor differences in the extractable carbon fractions, which only accounted for ~ 2–3% of total organic carbon. Increased total organic carbon content of biochar-amended composts was only due to the addition of biochar-C and not enhanced preservation of compost feedstock-C. Our results suggest that biochars do not alter the carbon speciation in compost organic matter under conditions optimized for aerobic decomposition of compost feedstock. Considering the effects of biochar on compost nutrient retention, mitigation of greenhouse gas emissions and carbon sequestration, biochar addition during aerobic composting of manure might be an attractive strategy to produce a sustainable, slow release fertilizer.

AB - Biochar, a material defined as charred organic matter applied in agriculture, is suggested as a beneficial additive and bulking agent in composting. Biochar addition to the composting feedstock was shown to reduce greenhouse gas emissions and nutrient leaching during the composting process, and to result in a fertilizer and plant growth medium that is superior to non-amended composts. However, the impact of biochar on the quality and carbon speciation of the organic matter in bulk compost has so far not been the focus of systematic analyses, although these parameters are key to determine the long-term stability and carbon sequestration potential of biochar-amended composts in soil. In this study, we used different spectroscopic techniques to compare the organic carbon speciation of manure compost amended with three different biochars. A non-biochar-amended compost served as control. Based on Fourier-transformed infrared (FTIR) and 13C nuclear magnetic resonance (NMR) spectroscopy we did not observe any differences in carbon speciation of the bulk compost independent of biochar type, despite a change in the FTIR absorbance ratio 2925 cm− 1/1034 cm− 1, that is suggested as an indicator for compost maturity. Specific UV absorbance (SUVA) and emission-excitation matrixes (EEM) revealed minor differences in the extractable carbon fractions, which only accounted for ~ 2–3% of total organic carbon. Increased total organic carbon content of biochar-amended composts was only due to the addition of biochar-C and not enhanced preservation of compost feedstock-C. Our results suggest that biochars do not alter the carbon speciation in compost organic matter under conditions optimized for aerobic decomposition of compost feedstock. Considering the effects of biochar on compost nutrient retention, mitigation of greenhouse gas emissions and carbon sequestration, biochar addition during aerobic composting of manure might be an attractive strategy to produce a sustainable, slow release fertilizer.

KW - Amazonian Dark Earth

KW - EEM

KW - Electron exchange capacity

KW - FTIR

KW - Farmyard manure

KW - Humic substances

KW - NMR

KW - Pyrogenic organic carbon

KW - Sewages sludge char

UR - http://www.scopus.com/inward/record.url?scp=85028988021&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85028988021&partnerID=8YFLogxK

U2 - 10.1016/j.scitotenv.2017.08.161

DO - 10.1016/j.scitotenv.2017.08.161

M3 - Article

VL - 613-614

SP - 20

EP - 29

JO - Science of the Total Environment

T2 - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -