Treatment of olive mill wastewater by chemical processes: effect of acid cracking pretreatment

2014 ◽  
Vol 69 (7) ◽  
pp. 1453-1461 ◽  
Author(s):  
B. Hande Gursoy-Haksevenler ◽  
Idil Arslan-Alaton
Keyword(s):  
Acute Toxicity ◽  
Chemical Treatment ◽  
Suspended Solids ◽  
Olive Mill Wastewater ◽  
Wastewater Sample ◽  
Fenton’S Reagent ◽  
Total Phenols ◽  
Fenton's Reagent ◽  
Treatment Processes ◽  
Olive Mill

The effect of acid cracking (pH 2.0; T 70 °C) and filtration as a pretreatment step on the chemical treatability of olive mill wastewater (chemical oxygen demand (COD) 150,000 m/L; total organic carbon (TOC) 36,000 mg/L; oil–grease 8,200 mg/L; total phenols 3,800 mg/L) was investigated. FeCl3 coagulation, Ca(OH)2 precipitation, electrocoagulation using stainless steel electrodes and the Fenton's reagent were applied as chemical treatment methods. Removal performances were examined in terms of COD, TOC, oil–grease, total phenols, colour, suspended solids and acute toxicity with the photobacterium Vibrio fischeri. Significant oil–grease (95%) and suspended solids (96%) accompanied with 58% COD, 43% TOC, 39% total phenols and 80% colour removals were obtained by acid cracking-filtration pretreatment. Among the investigated chemical treatment processes, electrocoagulation and the Fenton's reagent were found more effective after pretreatment, especially in terms of total phenols removal. Total phenols removal increased from 39 to 72% when pretreatment was applied, while no significant additional (≈10–15%) COD and TOC removals were obtained when acid cracking was coupled with chemical treatment. The acute toxicity of the original olive mill wastewater sample increased considerably after pretreatment from 75 to 89% (measured for the 10-fold diluted wastewater sample). An operating cost analysis was also performed for the selected chemical treatment processes.

Chemical Treatment and Enhancement of Bioavailability of Olive Mill Wastewater

2009 ◽  
Vol 44 (3) ◽  
pp. 307-312
Author(s):  
Bassim Eid Abbassi
Keyword(s):  
Chemical Treatment ◽  
Contact Time ◽  
Effective Means ◽  
Organic Content ◽  
Olive Mill Wastewater ◽  
Cod Removal ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Short Contact Time ◽  
Olive Mill

Abstract In this research, the potential of chemical treatment of olive mill wastewater (OMW) using different compounds such as lime, potassium permanganate, hypochlorite, and Fenton's reagent has been investigated. The capability of these compounds to breakdown the carbonaceous content of OMW was tested at different concentration ratios and contact times using a batch system. Chemical oxygen demand (COD) was used as an indicator for the organic content of the OMW. The results showed that chemical treatment is an effective means of treating highly concentrated wastewater such as OMW. A COD removal of about 90% was obtained at permanganate:COD ratio of 1:25 and contact time of 25 minutes. Using Fenton's reaction, more than 93% COD removal was observed at COD:Fe ratio of 50:1, H2O2:Fe ratio of 10:1, and contact time of 10 minutes. The lowest COD removal was observed using sodium hypochlorite. It was possible to reduce the bioavailability indicator, COD/BOD5 ratio, by 40 and 50% by treating the OMW with permanganate and Fenton's reagent, respectively. These results along with the short contact time required indicate that chemical treatment is an effective alternative to conventional biological treatment of highly concentrated OMW.

Combined treatment of olive mill wastewater by Fenton's reagent and anaerobic biological process

2015 ◽  
Vol 50 (2) ◽  
pp. 161-168 ◽  
Author(s):  
Carlos Amor ◽  
Marco S. Lucas ◽  
Juan García ◽  
Joaquín R. Dominguez ◽  
J. Beltrán De Heredia ◽  
...  
Keyword(s):  
Biological Process ◽  
Combined Treatment ◽  
Olive Mill Wastewater ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Olive Mill

Treatment of high strength olive mill wastewater by Fenton's reagent and aerobic biological process

2013 ◽  
Vol 48 (8) ◽  
pp. 954-962 ◽  
Author(s):  
Marco S. Lucas ◽  
J. Beltrán-Heredia ◽  
J. Sanchez-Martin ◽  
Juan Garcia ◽  
José A. Peres
Keyword(s):  
Biological Process ◽  
High Strength ◽  
Olive Mill Wastewater ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Olive Mill

Degradation of olive mill wastewater by the combination of Fenton's reagent and ozonation processes with an aerobic biological treatment

2001 ◽  
Vol 44 (5) ◽  
pp. 103-108 ◽  
Author(s):  
J. Beltrán-Heredia ◽  
J. Torregrosa ◽  
J. García ◽  
J.R. Dominguez ◽  
J.C. Tierno
Keyword(s):  
Biological Treatment ◽  
Chemical Oxidation ◽  
Polyphenolic Compounds ◽  
Olive Mill Wastewater ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Oxidation Processes ◽  
Moderate Reduction ◽  
Reagent Treatment ◽  
Olive Mill

Degradation of olive mill wastewater (OMW) by means of two chemical oxidation processes (Fenton's reagent and ozonation) and their consecutive treatments with aerobic microorganisms have been studied. Fenton's reagent treatment moderately reduces COD and to a greater extent the polyphenolic compounds. Ozonation contributed to low conversion of COD and moderate reduction of polyphenols. The aerobic biological treatments degrade to values higher than 70% and 90% for COD and polyphenolic compounds, respectively. A kinetic study has been carried out in each process, determining the representative kinetic parameters of each model.

Cleaning of olive mill wastewaters by visible light activated carbon doped titanium dioxide

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85586-85591 ◽  
Author(s):  
Francesca Cuomo ◽  
Francesco Venditti ◽  
Andrea Ceglie ◽  
Antonella De Leonardis ◽  
Vincenzo Macciola ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Activated Carbon ◽  
Visible Light ◽  
Olive Mill Wastewater ◽  
Total Phenols ◽  
Carbon Doped ◽  
Olive Mill Wastewaters ◽  
Doped Titanium Dioxide ◽  
Olive Mill

Visible light activated carbon doped titanium dioxide fully works in the removal of total phenols from olive mill wastewater.

Photo-Fenton Treatment of Olive Mill Wastewater Applying a Combined Fenton/Flocculation Pretreatment

2005 ◽  
Vol 129 (1) ◽  
pp. 53-59 ◽  
Author(s):  
W. Gernjak ◽  
T. Krutzler ◽  
R. Bauer
Keyword(s):  
Hordeum Vulgare ◽  
Reaction Rate ◽  
Suspended Solids ◽  
Olive Mill Wastewater ◽  
Solar Irradiation ◽  
Initial Value ◽  
Hordeum Vulgare L ◽  
Phenolic Substances ◽  
Parabolic Collector ◽  
Olive Mill

In this work, a pretreatment involving a combination of acidification, the Fenton method, and flocculation with polyelectrolytes was successfully applied to remove the suspended solids of Olive mill wastewater (OMW). This pretreatment strongly augmented the reaction rate in the following photo-Fenton treatment under solar irradiation in a Compound Parabolic Collector pilot-plant at Plataforma Solar de Almería. The content in phenolic substances could be degraded down to zero, while DOC was degraded down to about 25% of the initial value. In the work we describe different aspects concerning the process parameters of the pretreatment and the photo-Fenton treatment. Furthermore, decrease in phytotoxicity in the course of the treatment was monitored by germination tests with barley (hordeum vulgare L.). The results indicate that acute phytotoxicity can be substantially reduced by the application of the above mentioned pretreatment, enabling OMW to be used for ferti-irrigation in agriculture.

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