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Citation
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HERO ID
2708656
Reference Type
Journal Article
Title
High concentrations of polycyclic aromatic hydrocarbons (naphthalene, phenanthrene and pyrene) failed to explain biochar's capacity to reduce soil nitrous oxide emissions
Author(s)
Alburquerque, JA; Sánchez-Monedero, MA; Roig, A; Cayuela, ML
Year
2015
Is Peer Reviewed?
Yes
Journal
Environmental Pollution
ISSN:
0269-7491
EISSN:
1873-6424
Publisher
Elsevier Ltd
Location
OXFORD
Volume
196
Page Numbers
72-77
Language
English
PMID
25305467
DOI
10.1016/j.envpol.2014.09.014
Web of Science Id
WOS:000347583900008
URL
http://
://WOS:000347583900008
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Abstract
The presence of polycyclic aromatic hydrocarbons (PAHs) has been postulated as a mechanism by which biochar might mitigate N2O emissions. We studied whether and to what extent N2O emissions were influenced by the three most abundant PAHs in biochar: naphthalene, phenanthrene and pyrene. We hypothesised that biochars contaminated with PAHs would show a larger N2O mitigation capacity and that increasing PAH concentrations in biochar would lead to higher mitigation potentials. Our results demonstrate that the high-temperature biochar (550 °C) had a higher capacity to mitigate soil N2O emissions than the low-temperature biochar (350 °C). At low PAH concentrations, PAHs do not significantly contribute to the reductions in soil N2O emissions; while biochar stimulated soil N2O emissions when it was spiked with high concentrations of PAHs. This study suggests that the impact of biochar on soil N2O emissions is due to other compositional and/or structural properties of biochar rather than to PAH concentration.
Keywords
Pyrolysis; Organic pollutants; N2O mitigation; PAH; Agricultural soil
Tags
IRIS
•
Ammonia, Oral - Problem Formulation
•
Naphthalene
Database Searches - Nov 2015 (private)
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Data set for title/abstract screening
Excluded - PECO criteria not met (TIAB)
Other
•
Naphthalene (2021 Evidence mapping publication)
Database Searches - Nov 2015 (private)
Previous HERO references
Database Searches
PubMed
Combined data set
Data set for title/abstract screening
Excluded – PECO criteria not met
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