Performances of some NF and RO membranes for desalination of MBR treated wastewater

Sert, Gökhan; Bunani, Samuel; Yörükoğlu, Eren; Kabay, Nalan; Egemen, Özdemir; Arda, Müşerref; Yüksel, Mithat

doi:10.1016/j.jwpe.2016.11.009

Cited by 30 publications

(11 citation statements)

References 19 publications

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“…Practically, α i depend majorly on the molecular weight and they varied proportionately to one another [81]. Also, Sert et al [103] reported that wastewater with multivalent as well as monovalent co-ions are usually retained as a result of their surface electrical charges, particularly when RO membrane is used for the treatment. However, some of the monovalent could navigate through to balance up the disparity in the charges on the both surface of the membrane [103][104][105].…”

Section: Membrane Performance Indicesmentioning

confidence: 99%

“…Also, Sert et al [103] reported that wastewater with multivalent as well as monovalent co-ions are usually retained as a result of their surface electrical charges, particularly when RO membrane is used for the treatment. However, some of the monovalent could navigate through to balance up the disparity in the charges on the both surface of the membrane [103][104][105]. Vaughn et al [106] used Equation 4to measure α i , and they considered the specie concentration before membrane filtration as C ib and specie concentration contained in the permeate flux as C ip…”

Section: Membrane Performance Indicesmentioning

confidence: 99%

“…The effect of different processes conditions such as aerobic, anaerobic, anaerobic-aerobic, or combinations (hybrid), sonication and thermal application on the performance of MBR have been investigated and reported in the previous studies. In the MBR system, aeration may be required not just for biomass degradation but also for fouling control [62,103]. Particularly, at the initial stage of the treatment, deposition of colloids on membrane surface is less at higher aeration intensity but it may increase the fouling rate after a certain period of operation [129].…”

Section: Treatments Process Using Mbrmentioning

confidence: 99%

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Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Abdulsalam

Man

Idris

et al. 2018

Water

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Over the years, different types of alternative technologies have been developed and used for palm oil mill effluent (POME) treatment. Specifically, membrane bioreactor (MBR) has been employed to relegate pollutants contained in POME under different operating conditions, and the technology was found to be promising. The major challenge impeding the wider application of this technology is membrane fouling, which usually attracts high operating energy and running cost. In this regard, novel methods of mitigating membrane fouling through the treatment processes have been developed. Therefore, this review article specifically focuses on the recent treatment processes of POME using MBR, with particular emphasis on innovative processes conditions such as aerobic, anaerobic, and hybrid processing as well as their performance in relation to fouling minimization. Furthermore, the effects of sonication and thermophilic and mesophilic conditions on membrane blockage were critically reviewed. The types of foulants and fouling mechanism as influenced by different operating conditions were also analyzed censoriously.

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Section: Membrane Performance Indicesmentioning

confidence: 99%

Section: Membrane Performance Indicesmentioning

confidence: 99%

Section: Treatments Process Using Mbrmentioning

confidence: 99%

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Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Abdulsalam

Man

Idris

et al. 2018

Water

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“…The ESPA-2540 membrane showed rejections towards Ca 2+ and Mg 2+ higher than 86.5%; on the other hand, the observed rejection towards Na + was of 80%. Considering that divalent ions are larger than monovalent ions, the main mechanism of ion rejection by RO membranes is size exclusion [27]. However, the charges of ions and membranes employed cannot be neglected since they also interact each other electrostatically.…”

Section: Pre-treatment Processesmentioning

confidence: 99%

Performance of Reverse Osmosis Membranes in the Treatment of Flue-Gas Desulfurization (FGD) Wastewaters

et al. 2018

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Reverse osmosis (RO) was studied to reduce salinity of flue gas desulfurization (FGD) wastewaters after softening with Na 2 CO 3 •H 2 O and ultrafiltration (UF). Two commercial thin film composite polyamide RO membranes (SWC-2540 and ESPA-2540, from Hydranautics) in spiral-wound configuration were tested and their performance in terms of salinity reduction as well as permeate flux, fouling index and water recovery was evaluated. Experimental runs were performed according to the feed and bleed configuration in selected operating conditions. For the SWC-2540 membrane experiments were also performed in total recycle configuration in order to evaluate the effect of operating pressure on permeate flux and quality. Experimental results indicated that the SWC-2540 membrane showed a better performance in the rejection of ions: Mg 2+ ions were completely rejected, while the rejection towards monovalent ions such as Na + was of about 95.5%. The ESPA-2540 membrane showed rejections towards Ca 2+ and Mg 2+ higher than 86.5% whilst the observed rejection towards Na + was of 80%. For the SWC-2540 membrane an increased rejection for Ca 2+ and Na + ions was observed by increasing the operating pressure in the range 16-50 bar. Mg 2+ ions were totally rejected independently by the operating pressure.

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“…It has proven to be an effective method for the removal of a wide variety of contaminants from wastewater. Some studies concluded that an integrated system of MBR-NF/RO could be considered as a good alternative for the recovery and reuse of treated wastewater for irrigation [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Exclusion of Estrogenic and Androgenic Steroid Hormones from Municipal Membrane Bioreactor Wastewater Using UF/NF/RO Membranes for Water Reuse Application

Aziz

Ojumu

2020

Membranes

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In the context of water scarcity, domestic secondary effluent reuse may be an option as a reliable source for alleviating acute water shortage. The increasing risks linked with the presence of natural steroid hormones and many emerging anthropogenic micropollutants (MPs) passing through municipal wastewater treatment works (MWWTWs) are of concern for their endocrine-disrupting activities. In this study, domestic wastewater treated by a full-scale membrane bioreactor (MBR) at an MWWTW in the Western Cape Province, South Africa, was used directly as the influent to a reverse osmosis (RO) pilot plant for the removal of selected natural steroid hormones 17β-estradiol (E2) and testosterone (T) as a potential indirect water recycling application. Estrogenicity and androgenicity were assessed using the enzyme-linked immunosorbent assays (ELISA) and the recombinant yeast estrogen receptor binding assays (YES). The influent pH and flux did not influence the rejection of E2 and T, which was most likely due to adsorption, size exclusion, and diffusion simultaneously. RO and nanofiltration (NF) exhibited excellent removal rates (>95%) for E2 and T. All the E2 effluent samples with MBR/ultrafiltration (UF), MBR/NF, and MBR/RO were lower than the US EPA and WHO trigger value of 0.7 ng/L, as well as the predicted no-effect concentration (PNEC) values for fish (1 ng E2/L).

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Performances of some NF and RO membranes for desalination of MBR treated wastewater

Cited by 30 publications

References 19 publications

Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Performance of Reverse Osmosis Membranes in the Treatment of Flue-Gas Desulfurization (FGD) Wastewaters

Exclusion of Estrogenic and Androgenic Steroid Hormones from Municipal Membrane Bioreactor Wastewater Using UF/NF/RO Membranes for Water Reuse Application

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