Phospholipid fatty acid analysis to monitor the co-composting process of olive oil mill wastes and organic household refuse

JOURNAL OF HAZARDOUS MATERIALS

卷:154

Article

Barje, F.¹  Amir, S.²  Winterton, P.³  Pinelli, E.⁴  Merlina, G.⁴  Cegarra, J.⁵  Revel, J. -C.⁴  Hafidi, A.¹ 

[1] Fac Sci Semlalia, Dept Biol, Soil & Environm Lab, Marrakech, Morocco

[2] Polydisciplinary Fac, Dept Biol, Beni Mellal, Morocco

[3] Univ Toulouse 3, F-31062 Toulouse, France

[4] Ecole Natl Super Agron Toulouse, Eco Lab, CNRS, UPS INPT UMR 5245, Toulouse, France

[5] Ctr Edafol & Biol Aplicada Segura, Dept Soil & Water Conservat & Organ Waste Managem, Murcia, Spain

关键词: composting;    biodegradability;    microbial biomass;    PLFAs;   

DOI  :  10.1016/j.jhazmat.2007.10.089

来源: Elsevier

【 摘 要 】

The co-composting of olive oil mill wastes and household refuse was followed for 5 months. During the thermophilic phase of composting, the aerobic heterotrophic bacteria (AHB) count, showed a significant rise with a slight regression of fungal biomass. In the same way, phospholipid fatty acids PLFAs common in bacteria, showed a significant increase of hydroxyl and branched PLFAs. The evaluation of the ratio of octadecenoic PLFAs to stearic acid (C18:1 omega/C18:0) revealed a significant reduction while a significant rise in the length of aliphatic chains evaluated by the stearic acid to palmitic acid ratio (C18:0/C16:0) was noted during the stabilization phase. The follow-up of PLFAs, indicates the degree of biodegradation that occurs during composting, it can be regarded an indicator of the stability and maturity of the end product. (c) 2007 Published by Elsevier B.V.

【 授权许可】

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