Fouling prevention, preparing for re-use and membrane recycling. Towards circular economy in RO desalination

Landaburu-Aguirre, Junkal; García-Pacheco, Raquel; Molina, Serena; Rodríguez-Sáez, Laura; Rabadán, Javier; García‐Calvo, Eloy

doi:10.1016/j.desal.2016.04.002

Cited by 130 publications

(52 citation statements)

References 116 publications

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“…Reverse osmosis (RO) is currently a major technology for seawater desalination due to its lower energy consumption than distillation-based technologies. However, one of the most serious challenges of RO is a loss of permeability decline and an increase in energy consumption due to membrane fouling [4,5]. Accordingly, the key to successful operation of RO is the selection of appropriate pretreatments for seawater to reduce fouling and maintain high permeability.…”

Section: Introductionmentioning

confidence: 99%

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Gwenaelle

Jung²,

Choi

et al. 2017

Desalination

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Section: Introductionmentioning

confidence: 99%

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Gwenaelle

Jung²,

Choi

et al. 2017

Desalination

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“…energy consumption and cost), and deterioration of the membranes (i.e. material cost) . Biofouling refers to the settlement and growth of microbiological constituents onto the surface of the membrane which is commonly found in seawater.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of anti‐fouling novel cellulose/graphene oxide (GO) nanosheets (NS) microfiltration membranes for seawater desalination applications

Ibrahim

Banat

Yousef

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND Reverse osmosis (RO) is becoming the predominant technology for the future of desalinated of seawater. Nonetheless, operational challenges such as membrane biofouling in RO desalination plants result in membrane deterioration and high energy costs. In this regard, pre‐treatment technologies, such as microfiltration (MF) membranes, are proven to reduce the impact of membrane biofouling in RO systems. Hence, surface modifications of commercial cellulose MF membranes with graphene oxide nanosheets (GONSs) at different concentrations were carried out in this research study. The new membranes were characterized by scanning electron microscopy (SEM) and Raman spectroscopy amongst other methods of analysis. A continuous cross‐flow MF system was used to investigate the performance of the new cellulose/GONS membranes with regards to total bacteria count (TBC) removal, water flux, and biofouling resistance. RESULTS TBC removal efficiency of 93.6 ± 2.4% and 27.4 ± 12.5% was achieved using the new cellulose/GONS membranes and control pristine cellulose membranes, respectively. This higher removal efficiency was achieved at a water flux of 334.7 ± 10.4 L/(m2 h). Furthermore, a dramatic 55% increase in the transmembrane pressure (TMP) of the pristine cellulose membrane was observed after 24 h operation compared to only a 6% increase in the newly fabricated cellulose/GONS membranes, reflecting their strong anti‐fouling properties. CONCLUSION Surface modification of MF membranes with anti‐fouling nanomaterials such as GONS has the potential to be implemented in the pretreatment of seawater to improve the RO performance and lower the energy consumption. © 2020 Society of Chemical Industry

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“…Moreover, reduced water qulaity, short lifetime of membranes, and high chemical injections and energy consumption are the consequences of presence of contaminants and membrane fouling (5)(6)(7). Types of contaminants are basically categorized as soluble minerals, suspended inorganics and organic and biological pollutants (6,8,9). Each of these pollutants results in serious damages to membranes of RO systems.…”

Section: Introductionmentioning

confidence: 99%

Control of Silt Density Index of Osmosis Membranes Through Chlorine Injection and its Effect on Cartridge Filter Replacement Period

Fayaz

Mafigholami

Razavian

et al. 2019

Jundishapur J Health Sci

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Background: Various suspended organic and inorganic contaminants including biological deposits, different types of algae and barnacles and causative factors of water turbidity result in irreparable damages to pretreatment systems and membranes in reverse osmosis systems. Objectives: In this study, the effect of injection of disinfectant materials such as calcium hypochlorite on the reduction of silt density index (SDI) value at the inlet of reverse osmosis system has been investigated. Methods: In this research, correlations between fundamental parameters in pretreatment system such as turbidity, chlorine injection, residual chlorine content and SDI values were thoroughly analyzed and evaluated at one of the desalination plants located in Persian Gulf. Results: The results indicated that there is a close link between the amount of chlorine injection and SDI inlet value. By adjusting the nephelometric turbidity unit values in specific ranges of 35-55, 55-80 and 80-150 and oxidation reduction potential in the ranges of 280-680, 315-680 and 420-680 mV, favorable SDI value of inlet water was obtained. Conclusions: SDI control via chlorine injection increased the lifetime of cartridge filters at reverse osmosis input units and reduced the operation costs significantly.

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Fouling prevention, preparing for re-use and membrane recycling. Towards circular economy in RO desalination

Cited by 130 publications

References 116 publications

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Surface modification of anti‐fouling novel cellulose/graphene oxide (GO) nanosheets (NS) microfiltration membranes for seawater desalination applications

Control of Silt Density Index of Osmosis Membranes Through Chlorine Injection and its Effect on Cartridge Filter Replacement Period

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