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Elimination of polyphenols toxicity from olive mill wastewater sludge by its co-composting with sesame bark.
J Hazard Mater 2009; 161(2-3):1131-9JH

Abstract

Olive mill wastes represent a significant environmental problem in Mediterranean areas where they are generated in huge quantities in a short period of time. Their high phenol, lipid and organic acid concentrations turn them into phytotoxic materials, but these wastes also contain valuable resources such as a large proportion of organic matter and a wide range of nutrients that could be recycled. Composting is one of the technologies used for the valorization of this effluent, producing a fertilizer useful for poor soils.The present work deals with the changes that occur in the content of phenolic compounds and the biotoxicity of the oxidized substrate which result from the composting of olive mill wastewater (OMW) sludge with sesame bark. The total organic matter decreased 52.72% while water-soluble phenol degradation decreased 72% after 7 months of processing. Gas chromatography coupled with mass spectroscopy was used to confirm the elimination of polyphenols during composting. Initially, the analysis showed three abundant polyphenolic compounds, one of which was identified as the 4-hydroxyphenyl-ethanol (tyrosol), a well-known antioxidant in OMW. After 7 months of composting, all of the phenolic compounds disappeared. The phytotoxic effects of OMW sludge, assessed by the plant index germination, increased during the composting to reach 80% after 210 days. This trend was confirmed by the correlation between physico-chemical and toxicity parameters. The results obtained confirmed the stability of the compost prepared from OMW sludge with sesame bark and indicated a gradual detoxification as the compost matured.

Authors+Show Affiliations

UR Etude et Gestion des Environnements Urbains et Côtiers Ecole Nationale d'Ingénieurs de Sfax, LARSEN, B.P. 1173, 3038 Sfax, Tunisie.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18513861

Citation

Hachicha, Salma, et al. "Elimination of Polyphenols Toxicity From Olive Mill Wastewater Sludge By Its Co-composting With Sesame Bark." Journal of Hazardous Materials, vol. 161, no. 2-3, 2009, pp. 1131-9.
Hachicha S, Cegarra J, Sellami F, et al. Elimination of polyphenols toxicity from olive mill wastewater sludge by its co-composting with sesame bark. J Hazard Mater. 2009;161(2-3):1131-9.
Hachicha, S., Cegarra, J., Sellami, F., Hachicha, R., Drira, N., Medhioub, K., & Ammar, E. (2009). Elimination of polyphenols toxicity from olive mill wastewater sludge by its co-composting with sesame bark. Journal of Hazardous Materials, 161(2-3), pp. 1131-9. doi:10.1016/j.jhazmat.2008.04.066.
Hachicha S, et al. Elimination of Polyphenols Toxicity From Olive Mill Wastewater Sludge By Its Co-composting With Sesame Bark. J Hazard Mater. 2009 Jan 30;161(2-3):1131-9. PubMed PMID: 18513861.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Elimination of polyphenols toxicity from olive mill wastewater sludge by its co-composting with sesame bark. AU - Hachicha,Salma, AU - Cegarra,Juan, AU - Sellami,Fatma, AU - Hachicha,Ridha, AU - Drira,Noureddine, AU - Medhioub,Khaled, AU - Ammar,Emna, Y1 - 2008/04/24/ PY - 2007/06/23/received PY - 2008/04/16/revised PY - 2008/04/21/accepted PY - 2008/6/3/pubmed PY - 2009/3/4/medline PY - 2008/6/3/entrez SP - 1131 EP - 9 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 161 IS - 2-3 N2 - Olive mill wastes represent a significant environmental problem in Mediterranean areas where they are generated in huge quantities in a short period of time. Their high phenol, lipid and organic acid concentrations turn them into phytotoxic materials, but these wastes also contain valuable resources such as a large proportion of organic matter and a wide range of nutrients that could be recycled. Composting is one of the technologies used for the valorization of this effluent, producing a fertilizer useful for poor soils.The present work deals with the changes that occur in the content of phenolic compounds and the biotoxicity of the oxidized substrate which result from the composting of olive mill wastewater (OMW) sludge with sesame bark. The total organic matter decreased 52.72% while water-soluble phenol degradation decreased 72% after 7 months of processing. Gas chromatography coupled with mass spectroscopy was used to confirm the elimination of polyphenols during composting. Initially, the analysis showed three abundant polyphenolic compounds, one of which was identified as the 4-hydroxyphenyl-ethanol (tyrosol), a well-known antioxidant in OMW. After 7 months of composting, all of the phenolic compounds disappeared. The phytotoxic effects of OMW sludge, assessed by the plant index germination, increased during the composting to reach 80% after 210 days. This trend was confirmed by the correlation between physico-chemical and toxicity parameters. The results obtained confirmed the stability of the compost prepared from OMW sludge with sesame bark and indicated a gradual detoxification as the compost matured. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18513861/Elimination_of_polyphenols_toxicity_from_olive_mill_wastewater_sludge_by_its_co_composting_with_sesame_bark_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)00613-4 DB - PRIME DP - Unbound Medicine ER -