Article (Scientific journals)
Soil Amendments with Lignocellulosic Residues of Biorefinery Processes Affect Soil Organic Matter Accumulation and Microbial Growth
Savy, Davide; Mercl, F.; Cozzolino, V. et al.
2020In ACS Sustainable Chemistry and Engineering, 8 (8), p. 3381-3391
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Keywords :
Lignin-rich biorefinery byproducts; Offline thermochemolysis GC-MS; Phospholipid fatty acids (PLFAs); Soil organic matter stabilization; Bioconversion; Biogeochemistry; Fatty acids; Hydrophobicity; Lignin; Microorganisms; Nuclear magnetic resonance spectroscopy; Phospholipids; Refining; Soils; Biorefineries; Chemical composition of soils; Lignocellulosic residues; Microbial communities; Molecular compositions; Phospholipid fatty acids; Soil organic matters; Thermochemolysis; Stabilization; Lipids; Water Repellence
Abstract :
[en] The development of soil microbiota and the chemical composition of soil organic matter (SOM) were studied in a 180 day incubation experiment upon addition of a characterized lignocellulosic biorefinery residue (BYP) at two different rates. The microbial growth was studied by PLFA analysis after 30, 60, and 180 days, while SOM molecular composition was assessed by thermochemolysis at the end of the trial. Soil amendments with BYP induced a well differentiated microbial community. However, the overall microbial development significantly decreased over the experimental time due to a lesser availability of decomposable C to microorganisms. The reduced C accessibility was related to the progressively higher SOM recalcitrance with increasing BYP rates and was attributed to selective accumulation into the stable SOM fraction of hydrophobic compounds which prevented further BYP mineralization by protecting BYP from microbial activity. Our findings indicate that amendments with lignin-rich residues from biorefinery processes may promote the stabilization of humified molecules in soils, thus leading to a net C accumulation in soils. © 2020 American Chemical Society.
Disciplines :
Agriculture & agronomy
Author, co-author :
Savy, Davide ;  Université de Liège - ULiège > Département GxABT > Plant Sciences
Mercl, F.;  Department of Agro Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6, Suchdol, 165 00, Czech Republic
Cozzolino, V.;  Interdepartmental Res. Ctr. of Nucl. Magnetic Reson. for the Environ., Agri-Food and New Materials, University of Naples Federico II, Via Università 100, Portici, 80055, Italy, Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, Portici, 80055, Italy
Spaccini, R.;  Interdepartmental Res. Ctr. of Nucl. Magnetic Reson. for the Environ., Agri-Food and New Materials, University of Naples Federico II, Via Università 100, Portici, 80055, Italy, Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, Portici, 80055, Italy
Cangemi, S.;  Interdepartmental Res. Ctr. of Nucl. Magnetic Reson. for the Environ., Agri-Food and New Materials, University of Naples Federico II, Via Università 100, Portici, 80055, Italy
Piccolo, A.;  Interdepartmental Res. Ctr. of Nucl. Magnetic Reson. for the Environ., Agri-Food and New Materials, University of Naples Federico II, Via Università 100, Portici, 80055, Italy, Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, Portici, 80055, Italy
Language :
English
Title :
Soil Amendments with Lignocellulosic Residues of Biorefinery Processes Affect Soil Organic Matter Accumulation and Microbial Growth
Publication date :
2020
Journal title :
ACS Sustainable Chemistry and Engineering
eISSN :
2168-0485
Publisher :
American Chemical Society
Volume :
8
Issue :
8
Pages :
3381-3391
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
PON03PE_00107_01
Funders :
MIUR - Ministero dell'Istruzione, dell'Università e della Ricerca [IT]
Available on ORBi :
since 23 June 2020

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