Integration of traditional systems and advanced oxidation process technologies for the industrial treatment of olive mill wastewaters

Amaral‐Silva, Nuno; Martins, Rui C.; Castro‐Silva, Sérgio; Quinta‐Ferreira, Rosa M.

doi:10.1080/09593330.2016.1153158

Cited by 24 publications

(11 citation statements)

References 28 publications

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“…However, high contents of dissolved organic components are still present and must be further removed. Processes such as nanofiltration [39] or advanced oxidation processes [2,7,49] may be good options to reduce it and to guarantee the production of high quality water.…”

Section: Discussionmentioning

confidence: 99%

Assessment of a New Silicon Carbide Tubular Honeycomb Membrane for Treatment of Olive Mill Wastewaters

et al. 2017

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Extremely high removals of total suspended solids and oil and grease were obtained when olive mill wastewaters were filtered using new silicon carbide tubular membranes. These new membranes were used at constant permeate flux to treat real olive mill wastewaters at pilot scale. The filtration conditions were evaluated and optimized in terms of the selection of the permeate flux and flux maintenance strategies employed—backpulsing and backwashing—in order to reduce fouling formation. The results obtained reveal that the combination of backpulses and backwashes helps to maintain the permeate flux, avoids transmembrane pressure increase and decreases the cake resistance. Moreover, membrane cleaning procedures were compared and the main agents responsible for fouling formation identified. Results also show that, under total recirculation, despite an increased concentration of pollutants in the feed stream, the quality of the permeate is maintained. Membrane filtration using silicon carbide membranes is an effective alternative to dissolved air flotation and can be applied efficiently to remove total suspended solids and oil and grease from olive mill wastewaters.

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Section: Discussionmentioning

confidence: 99%

Assessment of a New Silicon Carbide Tubular Honeycomb Membrane for Treatment of Olive Mill Wastewaters

et al. 2017

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“…In this context, many research studies have proved that the real treatment of OMW by coagulation cannot been achieved without combinations of existing technologies such as, advanced oxidation processes (Ginos et al, 2006;Rizzo et al, 2008;Amaral-Silva et al, 2016), aerobic biological treatment (Jaouani et al, 2005;Pelendridou et al, 2014;Chiavola et al, 2010), Fenton processes (Rizzo et al, 2008;Lucas and Peres, 2009;Yazdanbakhsh et al, 2015;Madani et al, 2015;Gursoy-Haksevenler, Arslan-Alaton, 2014;Michael et al, 2014;Alver et al, 2015;Ioannou-Ttofa et al, 2017), catalytic ozonation (Eren et al, 2015) and membrane processes (Stoller and Chianese, 2006b;2007;Stoller, 2009).…”

Section: Removal Of Phenolic Compounds From Omw By Coagulation-floccumentioning

confidence: 99%

Chemical Coagulation/Flocculation Processes for Removal of Phenolic Compounds from Olive Mill Wastewater: A Comprehensive Review

Achak¹,

Elayadi²,

Boumya³

2019

American Journal of Applied Sciences

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Olive oil extraction processes generate three phases: Olive oil, solid residue (pomace) and aqueous liquor Olive Mill Wastewater (OMW). OMW causes serious environmental deteriorations such as coloring of natural waters, alteration of soil quality, phytotoxicity and odor nuisance. The direct discharge of this effluent into the soil bring various negative effects on the environment, due to its high load of organic matter and phenolic compounds. Coagulation, flocculation and their combination processes are among the most applied processes for wastewater treatment. The application of coagulation technique using mineral and inorganic polymeric coagulants and acid cracking is not always effective to reduce COD and phenolic compounds from OMW except lime. Although direct flocculation is a low treatment cost, use less chemical and produce less sludge, the efficiency of COD and phenolic compounds removal remain very low. Coagulationflocculation process is developed in order to enhance the removal efficiency of organic matter from OMW by optimizing the operating conditions. However, many studies showed that the combination of various cationic organic coagulant and flocculant agents did not show any significant decrease of COD and phenolic compounds except for lime combination. In the present review, recent research studies dealing with the application of coagulation/flocculation for removal of phenolic compounds and COD from OMW are presented and compared. Furthermore, the main factors that influence the selection between coagulation, direct flocculation and coagulation-flocculation are presented and the principal removal mechanisms are discussed.

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“…In this ambit, advanced oxidation processes are promising technologies to reduce the environmental impact of these effluents [5,10] and to promote water recovery from effluents [11,12]. Among them, ozonation [13] and Fenton´s process [14] show interesting potential for the treatment of OMW.…”

Section: Of 17mentioning

confidence: 99%

Detoxification of Olive Mill Wastewaters by Fenton’s Process

et al. 2018

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Olive mill wastewaters (OMW) constitute an environmental problem affecting mainly Mediterranean Sea area countries where the olive mill industry is a very important economic sector. The strong impact and management issues of these effluents are mainly due to their seasonality, localized production, and high organic load with high toxic features and low biodegradability. As the olive oil industry is highly water demanding, the search for suitable water recovery strategies requires the development and optimization of advanced treatment technologies. The classical Fenton’s process is an interesting alternative, as it operates at room conditions of pressure and temperature. However, it shows some drawbacks, such as the generation of iron sludges, which require further management. Nevertheless, because of its features that make it industrially desirable, overcoming these limitations has been the focus of researchers in the last years. Bearing this in mind, this paper focuses on the recent research regarding OMW treatment using Fenton’s process. The use of Fenton’s peroxidation treatment at homogenous, heterogeneous, and photo-aided conditions is analysed. The use of solid catalysts may be an interesting way to avoid sludge formation. Light-driven Fenton can also reduce the amount of iron needed for effective degradation. Moreover, Fenton’s process integration in combined treatment schemes is discussed. Finally, remarks regarding its application at full scale are given.

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Integration of traditional systems and advanced oxidation process technologies for the industrial treatment of olive mill wastewaters

Cited by 24 publications

References 28 publications

Assessment of a New Silicon Carbide Tubular Honeycomb Membrane for Treatment of Olive Mill Wastewaters

Assessment of a New Silicon Carbide Tubular Honeycomb Membrane for Treatment of Olive Mill Wastewaters

Chemical Coagulation/Flocculation Processes for Removal of Phenolic Compounds from Olive Mill Wastewater: A Comprehensive Review

Detoxification of Olive Mill Wastewaters by Fenton’s Process

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