Olive mill waste water: From a pollutant to green fuels, agricultural water source, and bio-fertilizer. Part 2: Water recovery

Patrick Dutournié, Mejdi Jeguirim*, Besma Khiari, Mary Lorène Goddard, Salah Jellali

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Water shortage is a very concerning issue in the Mediterranean region, menacing the viability of the agriculture sector and in some countries, population wellbeing. At the same time, liquid effluent volumes generated from agro-food industries in general and olive oil industry in particular, are quite huge. Thus, the main aim of this work is to suggest a sustainable solution for the management of olive mill wastewaters (OMWW) with possible reuse in irrigation. This work is a part of a series of papers valorizing all the outputs of a three-phase system of oil mills. It deals with recovery, by condensation, of water from bothOMWWandOMWW-impregnated biomasses (sawdust and wood chips), during a convective drying operation (air velocity: 1m/s and air temperature: 50 °C). The experimental results showed that the water yield recovery reaches about 95%. The condensate waters have low electrical conductivity and salinities but also acidic pH values and slightly high chemical oxygen demand (COD) values. However, they could be returned suitable for reuse in agriculture after additional low-cost treatment.

Original languageEnglish
Article number768
JournalWater (Switzerland)
Volume11
Issue number4
DOIs
Publication statusPublished - Apr 1 2019
Externally publishedYes

Keywords

  • Drying
  • OMWW
  • Sustainable development
  • Water characterization
  • Water recovery

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Biochemistry
  • Aquatic Science
  • Water Science and Technology

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