Impact of spreading olive mill wastewater on soil characteristics: laboratory experiments

Issue		Agron. Sustain. Dev. Volume 21, Number 8, December 2001


Page(s)		749 - 755
DOI		10.1051/agro:2001163

DOI: 10.1051/agro:2001163

Agronomie 21 (2001) 749-755

Impact of spreading olive mill wastewater on soil characteristics: laboratory experiments

B. Zenjari and Ahmed Nejmeddine

Université Cadi Ayyad, Faculté des Sciences Semlalia, Département de Biologie, BP/ 2390, Marrakech, Morocco

(Received 21 May 2001; revised 20 July 2001; accepted 20 September 2001)

Abstract
A dynamic of soil pollution with olive mill wastewater (OMW) was investigated in the laboratory. Organic and inorganic components of OMW were removed at the first infiltration by the upper layer of the soil, whose chemical properties changed. Besides organic carbon, Kjeldahl N, total phosphorus and potassium concentration increase, electrical conductivity, phenol concentration and salinization level increased, which could compromise soil fertility. At the second infiltration carried out 2 months later, the properties of the soil samples appeared to be neatly altered.

Résumé
Impact du rejet des effluents d'huileries sur le sol. L'impact de l'épandage d'effluents d'huileries (margines) sur un échantillon de sol au laboratoire a fait l'objet de cette étude. La majorité des micro-polluants organiques et inorganiques des margines ont été éliminés après la première infiltration ; ceci entraîne le changement des caractéristiques physico-chimiques du sol. La concentration en carbone organique, en azote Kjeldahl, en phosphore total et en potassium augmente. L'augmentation de la conductivité électrique, des phénols et de la concentration du sodium, surtout au niveau de la couche supérieure (0-20 cm), jusqu'aux limites de salinisation du sol peut entraîner la diminution de la fertilité de celui-ci. Une deuxième application de ces effluents sur les mêmes colonnes, après deux mois de repos, a montré une diminution des capacités épuratrices du sol.

Key words: OMW / soil / impact / phenols / organic matter / salinity

Mots clés : margines / sol / impact / phénols / matière organique / salinité

Correspondence and reprints: Ahmed Nejmeddine
e-mail: nejmeddine@ucam.ac.ma

Communicated by Gérard Guyot (Avignon, France)

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.