Grasas y Aceites, Vol 42, No 3 (1991)

Kinetics of the anaerobic purification of aerobically prebiotreated olive mill wastewater


https://doi.org/10.3989/gya.1991.v42.i3.1244

R. Borja Padilla
Instituto de la Grasa y sus Derivados (CSIC), Spain

J. A. Martín
Departamento de Ingeniería Química. Facultad de Ciencias. Universidad de Córdoba, Spain

R. Maestro Durán
Instituto de la Grasa y sus Derivados (CSIC), Spain

J. Alba Mendoza
Instituto de la Grasa y sus Derivados (CSIC), Spain

J. A. Fiestas de Ursinos
Instituto de la Grasa y sus Derivados (CSIC), Spain

Abstract


A kinetic study has been carried out on the process of anaerobic purification of an olive mill wastewater pre-treated aerobically to eliminate the greater part of the phenolic compounds responsible for inhibition.
Two anaerobic digesters were used, one with Pansil support, and the other a Reference without filling. The aim was to study the influence of the immobilization support both on the biokinetic constants and on the efficiency of the anaerobic digestion process or biomethanization of this pre-treated olive mill wastewater.
In contrast to what takes place with natural olive mill wastewater, only a very small decrease in the apparent rate constants of the anaerobic process was observed on increasing load density. At the same time, no inhibition was found in the biomethanization of this aerobically pre-treated wastewater.

Keywords


Aerobically pretreated; Anaerobic depuration; Kinetics; Olive mill wastewater

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