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Maturity assessment of composted olive mill wastes using UV spectra and humification parameters.
Bioresour Technol. 2008 Oct; 99(15):6900-7.BT

Abstract

In this study, two olive mill wastes - exhausted olive cake (EOC) and paste of olive mill wastewater naturally dehydrated (POMW) - were co-composted and mixed with 25% sesame bark (SB). The humification process was evidenced by quantifying the humic substances and the generally accepted humification indices: (i) the ratio of humic acid (HA) carbon to fulvic acid (FA) carbon (CHA/CFA), (ii) the ratio of water soluble organic carbon (CW) to total organic nitrogen (Cw/Norg), (iii) and the ratio of humic acid carbon to total organic carbon CHA/Corg and by determining the absorbance ratios: E2/E4, E2/E6 and E4/E6. The results showed that the time required to reach maturity was dependant on the chemical properties of the initial raw materials used. The compost including EOC had more nitrogen and synthesised more polymerised HA, the POMW compost also had acceptable degrees of stability and maturity at the end of the process. Maturation was confirmed by a decline in Cw below 1.7, an increase in nitrogen, in HA, in CHA/CFA and an elimination of phytotoxicity. Composts produced with olive mill wastes, experimented on potato culture in the field, can be considered beneficial to soils because of their humification indexes and no toxicity.

Authors+Show Affiliations

Ecole Nationale d'Ingénieurs de Sfax, B.P. "W", 3038 Sfax - Tunisie, UR Etude et Gestion des Environnements Urbains et Côtiers, Larsen, Tunisia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

18328696

Citation

Sellami, Fatma, et al. "Maturity Assessment of Composted Olive Mill Wastes Using UV Spectra and Humification Parameters." Bioresource Technology, vol. 99, no. 15, 2008, pp. 6900-7.
Sellami F, Hachicha S, Chtourou M, et al. Maturity assessment of composted olive mill wastes using UV spectra and humification parameters. Bioresour Technol. 2008;99(15):6900-7.
Sellami, F., Hachicha, S., Chtourou, M., Medhioub, K., & Ammar, E. (2008). Maturity assessment of composted olive mill wastes using UV spectra and humification parameters. Bioresource Technology, 99(15), 6900-7. https://doi.org/10.1016/j.biortech.2008.01.055
Sellami F, et al. Maturity Assessment of Composted Olive Mill Wastes Using UV Spectra and Humification Parameters. Bioresour Technol. 2008;99(15):6900-7. PubMed PMID: 18328696.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Maturity assessment of composted olive mill wastes using UV spectra and humification parameters. AU - Sellami,Fatma, AU - Hachicha,Salma, AU - Chtourou,Mohamed, AU - Medhioub,Khaled, AU - Ammar,Emna, Y1 - 2008/03/06/ PY - 2007/08/28/received PY - 2008/01/16/revised PY - 2008/01/20/accepted PY - 2008/3/11/pubmed PY - 2008/9/4/medline PY - 2008/3/11/entrez SP - 6900 EP - 7 JF - Bioresource technology JO - Bioresour. Technol. VL - 99 IS - 15 N2 - In this study, two olive mill wastes - exhausted olive cake (EOC) and paste of olive mill wastewater naturally dehydrated (POMW) - were co-composted and mixed with 25% sesame bark (SB). The humification process was evidenced by quantifying the humic substances and the generally accepted humification indices: (i) the ratio of humic acid (HA) carbon to fulvic acid (FA) carbon (CHA/CFA), (ii) the ratio of water soluble organic carbon (CW) to total organic nitrogen (Cw/Norg), (iii) and the ratio of humic acid carbon to total organic carbon CHA/Corg and by determining the absorbance ratios: E2/E4, E2/E6 and E4/E6. The results showed that the time required to reach maturity was dependant on the chemical properties of the initial raw materials used. The compost including EOC had more nitrogen and synthesised more polymerised HA, the POMW compost also had acceptable degrees of stability and maturity at the end of the process. Maturation was confirmed by a decline in Cw below 1.7, an increase in nitrogen, in HA, in CHA/CFA and an elimination of phytotoxicity. Composts produced with olive mill wastes, experimented on potato culture in the field, can be considered beneficial to soils because of their humification indexes and no toxicity. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/18328696/Maturity_assessment_of_composted_olive_mill_wastes_using_UV_spectra_and_humification_parameters_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(08)00093-X DB - PRIME DP - Unbound Medicine ER -