|
|||||
|
|
Treatment of olive mill wastewater by the combination of ultrafiltration and bipolar electrochemical reactor processes |
|
| Authors: | O YahiaouiN Abdi N Drouiche N GhaffourA Pauss N Mameri |
| Affiliation: | a Ecole Nationale Polytechnique Alger, Biotechnology Laboratory BIOGEP, 10 Avenue Pasteur, El Harrach, Algiers, Algeria b Silicon Technology Development Unit (UDTS), 2, Bd Frantz Fanon, BP140 Algiers-7-merveilles, Algiers 16200, Algeria c Water Desalination & Reuse Centre, King Abdullah University of Science and Technology, (KAUST), Saudi Arabia d University of Technology of Compiègne, Chemical Engineering Departement, B.P. 20.509, 60205 Compiègne cedex, France |
| Abstract: | The main purpose of this study was to investigate the removal of the chemical oxygen demand (COD) from olive mill wastewater (OMW) by the combination of ultrafiltration with electrocoagulation process. Ultrafiltration process equipped with CERAVER membrane was used as pre-treatment for electrochemical process. The obtained permeate from the ultrafiltration process allowed COD removal efficiency of about 96% from OMW. Obtained permeate with an average COD of about 1.1 g dm−3 was treated by electrochemical reactor equipped with a reactor with bipolar iron plate electrodes. The effect of the experimental parameters such as current density, pH, surface electrode/reactor volume ratio and NaCl concentration on COD removal was assessed. The results showed that the optimum COD removal rate was obtained at a current density of 93.3 A m−2 and pH ranging from 4.5 to 6.5. At the optimum operational parameters for the experiments, electrocoagulation process could reduce COD from 1.1 g dm−3 to 78 mg dm−3, allowing direct discharge of the treated OMW as that meets the Algerian wastewater discharge standards (<125 mg dm−3). |
| Keywords: | Electrocoagulation Iron bipolar electrodes Olive mill wastewater Mineral membrane Ultrafiltration |
| 本文献已被 ScienceDirect 等数据库收录！ | |