A compact process for the treatment of olive mill wastewater by combining wet hydrogen peroxide catalytic oxidation and biological techniques

被引：47
|
作者：
Azabou, Samia [1 ]
Najjar, Wahiba [2 ]
Bouaziz, Mohamed [1 ]
Ghorbel, Abdelhamid [2 ]
Sayadi, Sami [1 ]
机构：
[1] Ctr Biotechnol Sfax, Lab BioProcedes, Sfax 3018, Tunisia
[2] Fac Sci Tunis, Lab Chim Mat & Catalyse, Tunis 2092, Tunisia
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 183卷 / 1-3期
关键词：
Olive mill wastewater; Wet hydrogen peroxide catalytic oxidation; Aluminium-iron-pillared inter layer clay (Al-Fe)PILC; Biomethanisation; PILLARED CLAY CATALYSTS; ANAEROBIC-DIGESTION; PHENOLIC-COMPOUNDS; INTEGRATED TREATMENT; FENTON OXIDATION; IRON; EFFLUENT; OMW; FE; METHANOGENESIS;
D O I：
10.1016/j.jhazmat.2010.06.104
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A system based on combined actions of catalytic wet oxidation and microbial technologies for the treatment of highly polluted OMW containing polyphenols was studied. The wet hydrogen peroxide catalytic oxidation (WHPCO) process has been investigated in the semi-batch mode at atmospheric pressure. using aluminium-iron-pillared inter layer clay ((Al-Fe)PILC), under two different catalytic processes: ((Al-Fe)PILC/H2O2/ultraviolet radiations) at 25 degrees C and ((Al-Fe)PILC/H2O2) at 50 degrees C. The results show that raw OMW was resistant to the photocatalytic process. However ((Al-Fe)PILC/H2O2), system operating at 50 degrees C reduced considerably the COD, colour and total phenolic contents, and thus decreased the inhibition of the marine photobacteria Vibrio fischeri luminescence by 70%. This study also examined the feasibility of coupling WHPCO and anaerobic digestion treatment. Biomethanisation experiments performed with raw OMW or pre-treated OMW proved that pre-treatments with ((Al-Fe)PILC/H2O2) system, for more than 2 h, resulted in higher methane production. Both untreated OMW as well as 2-h pre-treated OMW revealed as toxic to anaerobic bacteria. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：62 / 69
页数：8
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