Combined Process for Olive Oil Mill Wastewater Treatment Based in Flocculation, Photolysis, Microfiltration and Microalgae Culture

Hodaifa, Gassan; Romero, Ana Malvis; Halioui, Mansour; Sánchez, Sebastián

doi:10.1007/978-3-319-70548-4_326

Cited by 3 publications

(5 citation statements)

References 7 publications

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“…Exhibit 3 shows the values of Na + , Ca 2+ , K + and Cl – contents where potassium is the most predominant cationic metal. These results are in the same order of those indicated by other authors in the literature (El Moussaoui et al., 2018; Hodaifa et al., 2019; Khdair & Abu‐Rumman, 2020; Mekki et al., 2016). The high values registered of these inorganic salts allow the use of these wastewaters as a fertilizer for agricultural land.…”

Section: Resultssupporting

confidence: 91%

“…Distillation followed by neutralization with lime where chloride retention rate was 97% (Ouabou et al., 2014), electrolysis of OMWW using an electrochemical reactor where chlorides removal up to 82% (Sbai & Loukili, 2015), flocculation followed by green microalgae where TOC and turbidity removal were 75% and 99%, respectively (Hodaifa et al., 2019), a bio‐adsorbent based on chitin from shrimp shells with removal of phenolic compounds up to 69% (Elayadi et al., 2020), and a combined US/UV/TiO 2 system, which obtained a removal percentage up to 59% (Al‐Bsoul et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

“…The management of these discharges becomes an important issue for the preservation of the environment and the human health. These wastewaters are characterized as acidic, poorly biodegradable and toxicity due to the high organic and inorganic loads which cause a high oxygen consumption (Hodaifa et al., 2019). For these reasons, these wastewaters could not discharge directly without its treatment to natural water bodies.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, these wastewaters have high attention by the scientific community, which proposes many alternatives for its treatments. In this sense, it can be mentioned: chemical flocculation (Hodaifa et al., 2019), anaerobic digestion (González‐González & Cuadros, 2015), diafiltration (Gkoutsidis et al., 2011), coagulation, membrane technology, reverse osmosis and biofiltration (Stoller et al., 2016), coagulation‐flocculation (Achak et al., 2008; Elayadi et al., 2019; Majdy et al., 2015), treatments by adsorption onto wheat bran (Achak et al., 2014), aerobic treatment (El Moussaoui et al., 2018). Many studies conducted for the OMWW treatment have focused on adsorption, since it is considered as an effective retention technique, with many advantages such as: simplicity and reversibility.…”

Section: Introductionmentioning

confidence: 99%

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High adsorption capacity of thermally treated solid olive wastes to treat olive mill wastewater

Bekri

Taleb

et al. 2021

Environmental Quality Mgmt

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In this study, solid olive wastes were suggested as adsorbents for olive mill wastewater (OMWW) clean-up. These solid olive wastes underwent thermal treatment by twostep process: carbonization at 300 • C and 400 • C, then physical activation at 800 • C and 1000 • C. Characterizations were determined by FTIR, TGA/DTA, and N 2 Adsorption-Desorption techniques. The efficiency of these new bio-adsorbents was verified on OMWW. Adsorption kinetics experiments were realized at room temperature and diluted OMWW (1/100 v/v). Evaluation of obtained activated carbons (ash, iodine value, and moisture) shows a good activity and stability in weight according to the thermogravimetric analysis. Moreover, the textural results of BET surface area showed a high area for activated carbons prepared from olive stones at 300 • C/800 • C (S BET = 208 ± 0.3 m 2 /g) and olive flesh at 400 • C/1000 • C (S BET = 77 ± 0.8 m 2 /g). The adsorption rates of OMWW were 91% after 120 min and 95.3% after 60 min contact time at pH = 2.0, respectively. At the end, the pH increased to neutral value. Thus, these bio-adsorbents from solid waste of olive industry can be efficient adsorbents for their liquid effluent clean-up.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High adsorption capacity of thermally treated solid olive wastes to treat olive mill wastewater

Bekri

Taleb

et al. 2021

Environmental Quality Mgmt

Self Cite

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“…In recent years many combination treatments have been proposed for the treatment of OMW. High power ultrasound (HPU) treatment combined with the electro‐Fenton method (Mostafa et al, 2018), the combination between oxidation and coagulation/flocculation (Esteves et al, 2019) and the combination between flocculation, photolysis, microfiltration and microalgae culture (Hodaifa et al, 2017). All of these treatments were based on combined systems, with high energy demands, high operating and maintenance costs.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness assessment of olive mill wastewater treatment by combined process: Natural flotation and anaerobic‐aerobic biodegradation

Rifi

Aguelmous

Fels

et al. 2021

Water & Environment J

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The present work intends to study the treatment of olive oil mill wastewater (OMW) by natural flotation followed by anaerobic‐aerobic biodegradation, without dilution. After natural flotation, turbidity, chemical oxygen demand (COD) and polyphenol decreased by 37.7%, 3.7% and 3.3%, respectively. Whereas, anaerobic treatment removed 23.9% of nitrate, 29.1% of turbidity and 16.2% of polyphenol. However, intermittent aeration treatment showed the reduction of nitrate, turbidity and ammonium by 90%, 26.5% and 65.1%, respectively. In general, the combined natural flotation and anaerobic‐aerobic treatment of OMW, without dilution, have led to reduced turbidity, COD, polyphenol, nitrate, ammonium and phosphorus by 67.5%, 29.1%, 25.2%, 93.9%, 77.1% and 81.8%, respectively. The germination index of the treated OMW was 69% after 30% of dilution. Finally, the proposed treatment process could be used in small and medium‐sized industries as a simple, economical and effective method. Also, the produced water could be reused for irrigation.

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Potential of Microalgae in Bioremediation of Wastewater

Ahmad

Abdullah²,

Iwamoto

et al. 2021

Bull. Chem. React. Eng. Catal.

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The increase in global pollution, industrialization and fast economic progress are considered to inflict serious consequences to the quality and availability of water throughout the world. Wastewater is generated from three major sources, i.e. industrial, agricultural, and municipal which contain pollutants, such as: xenobiotics, microplastics, heavy metals and augmented by high amount of carbon, phosphorus, and nitrogen compounds. Wastewater treatment is one of the most pressing issues since it cannot be achieved by any specific technology because of the varying nature and concentrations of pollutants and efficiency of the treatment technologies. The degradation capacity of these conventional treatment technologies is limited, especially regarding heavy metals, nutrients, and xenobiotics, steering the researchers to bioremediation using microalgae (Phycoremediation). Bioremediation can be defined as use of microalgae for removal or biotransformation of pollutants and CO2 from wastewater with concomitant biomass production. However, the usage of wastewaters for the bulk cultivation of microalgae is advantageous for reducing carbon, nutrients cost, minimizing the consumption of freshwater, nitrogen, phosphorus recovery, and removal of other pollutants from wastewater and producing sufficient biomass for value addition for either biofuels or other value-added compounds. Several types of microalgae like Chlorella and Dunaliella have proved their applicability in the treatment of wastewaters. The bottlenecks concerning the microalgal wastewater bioremediation need to be identified and elucidated to proceed in bioremediation using microalgae. This objective of this paper is to provide an insight about the treatment of different wastewaters using microalgae and microalgal potential in the treatment of wastewaters containing heavy metals and emerging contaminants, with the specialized cultivation systems. This review also summarizes the end use applications of microalgal biomass which makes the bioremediation aspect more environmentally sustainable. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Combined Process for Olive Oil Mill Wastewater Treatment Based in Flocculation, Photolysis, Microfiltration and Microalgae Culture

Cited by 3 publications

References 7 publications

High adsorption capacity of thermally treated solid olive wastes to treat olive mill wastewater

High adsorption capacity of thermally treated solid olive wastes to treat olive mill wastewater

Effectiveness assessment of olive mill wastewater treatment by combined process: Natural flotation and anaerobic‐aerobic biodegradation

Potential of Microalgae in Bioremediation of Wastewater

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