Photochemical UV/TiO2 treatment of olive mill wastewater (OMW)

Hajjouji, Houda El; Barje, Farid; Pinelli, Éric; Bailly, Jean-René; Richard, Claire; Winterton, Peter; Revel, Jean-Claude; Hafidi, Mohamed

doi:10.1016/j.biortech.2007.12.054

Cited by 73 publications

(34 citation statements)

References 23 publications

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“…Real wastewaters on the other hand have a multitude of pollutants and take longer to treat (typically a few hours) [10][11][12][13][14]. The photooxidation of surfactants, the main components of shower water, was extensively studied by Hidaka and coworkers [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Treatment of Shower Water Using a Pilot Scale Reactor

Boyjoo

Ang

Pareek

2012

International Journal of Photoenergy

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Treatment of shower water deserves special consideration for reuse not only because of its low pollutant loading but also because it is produced in large quantities. In this study, a pilot scale study of photocatalytic degradation of impurities in real shower water was performed in a 31 L volume reactor using titanium dioxide as the photocatalyst. The reactor was operated in a continuous slurry recirculation mode. Several operational parameters were studied including the slurry initial pH, catalyst concentration, air flow rate, and slurry recirculation rate. Up to 57% of total organic carbon (TOC) elimination was obtained after 6 hours of treatment (for 3.0 slurry initial pH, 0.07 gL −1 catalyst concentration, 1.8 Lmin −1 air flow rate, and 4.4 Lmin −1 slurry recirculation rate). This study showed that photocatalysis could be successfully transposed from bench scale to pilot scale. Furthermore, the ease of operation and the potential to use solar energy make photocatalysis an attractive prospect with respect to treatment of grey water.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic Treatment of Shower Water Using a Pilot Scale Reactor

Boyjoo

Ang

Pareek

2012

International Journal of Photoenergy

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“…It can be seen that there are no significant differences between the removal percentages for the different parameters registered. In this sense, Hajjouji et al [26] have obtained a COD removal percentage value slightly higher (%COD removal = 22%) than determined in this work when OMW was treated by photocatalysis using TiO 2 under UV-light during 24 h.…”

Section: Direct Uv-light Effect In Wastewatersmentioning

confidence: 75%

Treatment of Olive Oil Mill Wastewater by UV-Light and UV/H2O2 System

Hodaifa¹

2018

Int. J. Green Technol.

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Olive oil mills generates large volumes of wastewaters (OMW). The absence of legislation, which manages and obligates the treatment of OMW has led to the creation of large build-evaporation ponds as a solution for this environmental problem. The function of these ponds is the evaporation of wastewater during summer months. However, evaporation isn't enough to eliminate all wastewater in the rafts and this fact allows the generation of a great volume of concentrate wastewater with high organic load (COD = 0.5-38 g O2/L). The environmental impact produced by the accumulation of polluted wastewater demands the design of processes for OMW treatment. In this sense, the influence of ultraviolet light (UV) and the combined system of UV/H2O2, in the degradation of organic matter of OMW, were studied. UV-light application at a short time (<30 min) implies a removal values in COD = 15-22%, total carbon (TC), total organic carbon (TOC) and total nitrogen (TN) in the range 34% to 43%. The turbidity elimination was registered in the range 68% to 70%. In the case of combined UV/H2O2 system the removal percentages were 40-48% for COD, 39.4-51.9% for TC, 33.0-48.0% for TOC, 37.0-53.1% for TN, and 66.8-93.4% for turbidity.

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“…The following protocol results from a previous study realized on olive mill wastewater photocatalytic successful treatment [20]. For this experiment, sludge was diluted to 1/100 and filtered through a 0.45-m glass fiber filter to avoid the presence of a particular phase and crystalline forms of the studied products.…”

Section: Tio 2 /Uv Treatmentmentioning

confidence: 99%