Technical optimization of an integrated UF/NF pilot plant for conjoint batch treatment of two-phase olives and olive oil washing wastewaters

Ochando-Pulido, J.M.; Verardo, Vito; Segura‐Carretero, Antonio; Martinez-Ferez, A.

doi:10.1016/j.desal.2014.10.040

Cited by 19 publications

(12 citation statements)

References 23 publications

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“…Except for the antifouling strategies introduced above, it is also helpful to apply pretreatment (e.g., flocculation, pre-filtering, etc.) to the oily wastewater before filtration, [38,51,111] or combine different treatment techniques to mitigate membrane fouling. [138,139] In the following we present the outlooks on the treatment of oily wastewater using membranes.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Antifouling membranes for oily wastewater treatment: Interplay between wetting and membrane fouling

Huang

Ras

Tian

2018

Current Opinion in Colloid & Interface Science

267

106

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Oily wastewater is an extensive source of pollution to soil and water, and its harmless treatment is of great importance for the protection of our aquatic ecosystems. Membrane filtration is highly desirable for removing oil from oily water because it has the advantages of energy efficiency, easy processing and low maintenance cost. However, membrane fouling during filtration leads to severe flux decline and impedes long-term operation of membranes in practical wastewater treatment. Membrane fouling includes reversible fouling and irreversible fouling. The fouling mechanisms have been explored based on classical fouling models, and on oil droplet behaviors (such as droplet deposition, accumulation, coalescence and wetting) on the membranes. Membrane fouling is dominated by droplet-membrane interaction, which is influenced by the properties of the membrane (e.g., surface chemistry, structure and charge) and the wastewater (e.g., compositions and concentrations) as well as the operation conditions. Typical membrane antifouling strategies, such as surface hydrophilization, zwitterionic polymer coating, photocatalytic decomposition and electrically enhanced antifouling are reviewed, and their cons and pros for practical applications are discussed.

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Section: Discussionmentioning

confidence: 99%

“…[34] Since more concentrated oily wastewater is more prone to foul the membrane, [51] it is helpful to perform pretreatments (e.g., using flocculation or pre-filtering to decrease oil concentration) before filtration. [1,38,51]…”

Section: Controlling Factors Of Membrane Fouling In Oily Wastewater Tmentioning

confidence: 99%

Antifouling membranes for oily wastewater treatment: Interplay between wetting and membrane fouling

Huang

Ras

Tian

2018

Current Opinion in Colloid & Interface Science

267

106

View full text Add to dashboard Cite

show abstract

“…Another study by Ochando-Pulido and co-workers [41][42][43] presented a batch membrane-inseries processes, UF followed by NF, both polymeric in spiral-wound configuration, for the reclamation of OMW-2. Previously, flocculation (pH-T) and UV photocatalysis with ferromagnetic titanium dioxide nanoparticles were performed.…”

Section: Membrane Processes For Olive Mill Wastewater Purificationmentioning

confidence: 99%

The Use and Performance of Nanofiltration Membranes for Agro-Industrial Effluents Purification

Macedo¹,

Ochando-Pulido²,

Fragoso³

et al. 2018

Nanofiltration

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Nanofiltration (NF) technology offers several advantages over classic separation processes. NF membranes have been increasingly implemented in water treatment processes (e.g., desalination of brackish water and seawater) and for wastewater (e.g., textile, pulp and paper, pharmaceutical, and agro-industrial). The specific selectivity toward small solutes and the lower energy consumption of NF membranes have enhanced their use. However, some drawbacks need to be faced when NF is applied on an industrial scale. The main drawback is fouling that reduces the production capacity of the plant and shortens the membrane service lifetime if of irreversible nature, thus increasing the operating and capital costs. Moreover, fouling alters the selectivity of the membrane and thus the rejection efficiency. This chapter focuses the use of NF for the treatment of different agro-industrial effluents (such as dairy, tomato, and olive oil) and addresses membrane fouling as the main drawback against NF competitiveness.

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“…On another hand, Ochando-Pulido et al [28,29] tested a polymeric UF membrane for the reclamation of both OWW and OMW-2, separately or mixed. As pretreatments, three diferent processes were examined: (i) irst, gridding (cut size equal to 300 μm) of the raw eluent was carried out in order to remove the coarse particles; (ii) then, pH-temperature (T) locculation (pH-T F) was performed by adding HNO 3 (70% w/w) under continuous stirring (320 rpm); and (iii) the supernatant phase of the pH-T F process after the separation of the mud was either directly conducted to the UF unit and thereby referred to as OMWW-F or further pretreated by photocatalysis (PhC) under ultraviolet irradiation (UV) with lab-made ferromagnetic-core TiO 2 nanoparticles (UV/TiO 2 PhC), thus named OMWW-F/PhC.…”

Section: Microiltration and Ultrailtration Membranesmentioning

confidence: 99%

“…On another hand, Ochando-Pulido et al [28,29] tested polymeric NF and RO membranes for the reclamation of OWW and OMW-2. The NF membrane was downstream of an UF one, and the eluent was initially pretreated by locculation and/or heterogeneous photocatalysis (pH-T F and/or UV/TiO 2 PhC).…”

Section: Nanoiltration and Reverse Osmosis Membranesmentioning

confidence: 99%

On the Purification of Agro-Industrial Wastewater by Membrane Technologies: The Case of Olive Mill Effluents

Ochando-Pulido¹,

Martínez-Férez²

2017

Desalination

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Technical optimization of an integrated UF/NF pilot plant for conjoint batch treatment of two-phase olives and olive oil washing wastewaters

Cited by 19 publications

References 23 publications

Antifouling membranes for oily wastewater treatment: Interplay between wetting and membrane fouling

Antifouling membranes for oily wastewater treatment: Interplay between wetting and membrane fouling

The Use and Performance of Nanofiltration Membranes for Agro-Industrial Effluents Purification

On the Purification of Agro-Industrial Wastewater by Membrane Technologies: The Case of Olive Mill Effluents

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