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Evolution of the fulvic acid fractions during co-composting of olive oil mill wastewater sludge and tree cuttings.
Bioresour Technol. 2007 Jul; 98(10):1964-71.BT

Abstract

Fulvic acids (FAs) were isolated by a conventional procedure from two mixtures of the sludge residue obtained from olive oil mill wastewater (OMW) evaporated in open-air pond and tree cuttings (TC) at different stages of the co-composting process. The FAs were analyzed for elemental (C, H, N, S, O) and acidic functional group (carboxylic and phenolic) composition, and by ultraviolet/visible, Fourier transform infrared and fluorescence spectroscopies. At the initial stage of composting, FAs from the OMW sludge-TC mixtures were characterized by a prevalent aliphatic character, large contents of C, S-containing groups, proteinaceous materials and polysaccharide components, extended molecular heterogeneity, small O and acidic functional group contents, and small degrees of aromatic ring polycondensation, polymerization and humification. As composting proceeded, C, H and S contents, C/N ratio, and aliphaticity decreased, whereas N, O, COOH and phenolic OH contents, C/H and O/C ratios, and aromaticity increased. These results suggested that, with increasing the composting time, the chemical and structural properties of the FA components of the two OMW sludge-TC mixtures approached the characteristics typical of native soil FAs. Thus, co-composting of OMW sludge mixed with TC may represent a suitable treatment for enhancing the quality of organic matter in these materials when used as soil amendments.

Authors+Show Affiliations

Plaza C
Centro de Ciencias Medioambientales, Consejo Superior de Investigaciones Científicas, Serrano 115 dpdo., 28006 Madrid, Spain. c.plaza@ccma.csic.es
Senesi N
No affiliation info available
Brunetti G
No affiliation info available
Mondelli D
No affiliation info available

MeSH

BenzopyransChemical FractionationFood IndustryHumic SubstancesIndustrial WasteOlive OilPlant OilsRefuse DisposalSewageSoilSpectroscopy, Fourier Transform InfraredTreesWaste Disposal, Fluid

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17197175

Citation

Plaza, César, et al. "Evolution of the Fulvic Acid Fractions During Co-composting of Olive Oil Mill Wastewater Sludge and Tree Cuttings." Bioresource Technology, vol. 98, no. 10, 2007, pp. 1964-71.
Plaza C, Senesi N, Brunetti G, et al. Evolution of the fulvic acid fractions during co-composting of olive oil mill wastewater sludge and tree cuttings. Bioresour Technol. 2007;98(10):1964-71.
Plaza, C., Senesi, N., Brunetti, G., & Mondelli, D. (2007). Evolution of the fulvic acid fractions during co-composting of olive oil mill wastewater sludge and tree cuttings. Bioresource Technology, 98(10), 1964-71.
Plaza C, et al. Evolution of the Fulvic Acid Fractions During Co-composting of Olive Oil Mill Wastewater Sludge and Tree Cuttings. Bioresour Technol. 2007;98(10):1964-71. PubMed PMID: 17197175.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evolution of the fulvic acid fractions during co-composting of olive oil mill wastewater sludge and tree cuttings. AU - Plaza,César, AU - Senesi,Nicola, AU - Brunetti,Gennaro, AU - Mondelli,Donato, Y1 - 2007/01/02/ PY - 2006/05/31/received PY - 2006/07/28/revised PY - 2006/07/29/accepted PY - 2007/1/2/pubmed PY - 2007/7/21/medline PY - 2007/1/2/entrez SP - 1964 EP - 71 JF - Bioresource technology JO - Bioresour Technol VL - 98 IS - 10 N2 - Fulvic acids (FAs) were isolated by a conventional procedure from two mixtures of the sludge residue obtained from olive oil mill wastewater (OMW) evaporated in open-air pond and tree cuttings (TC) at different stages of the co-composting process. The FAs were analyzed for elemental (C, H, N, S, O) and acidic functional group (carboxylic and phenolic) composition, and by ultraviolet/visible, Fourier transform infrared and fluorescence spectroscopies. At the initial stage of composting, FAs from the OMW sludge-TC mixtures were characterized by a prevalent aliphatic character, large contents of C, S-containing groups, proteinaceous materials and polysaccharide components, extended molecular heterogeneity, small O and acidic functional group contents, and small degrees of aromatic ring polycondensation, polymerization and humification. As composting proceeded, C, H and S contents, C/N ratio, and aliphaticity decreased, whereas N, O, COOH and phenolic OH contents, C/H and O/C ratios, and aromaticity increased. These results suggested that, with increasing the composting time, the chemical and structural properties of the FA components of the two OMW sludge-TC mixtures approached the characteristics typical of native soil FAs. Thus, co-composting of OMW sludge mixed with TC may represent a suitable treatment for enhancing the quality of organic matter in these materials when used as soil amendments. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/17197175/Evolution_of_the_fulvic_acid_fractions_during_co_composting_of_olive_oil_mill_wastewater_sludge_and_tree_cuttings_ DB - PRIME DP - Unbound Medicine ER -