Evaluation of biofouling behavior of zwitterionic silane coated reverse osmosis membranes fouled by marine bacteria

Saffarimiandoab, Farzin; Gül, Bahar Yavuztürk; Erkoc-Ilter, Selda; Güçlü, Serkan; Ünal, Serkan; Tunaboylu, Bahadır; Menceloǵlu, Yusuf́ Z.; Koyuncu, İsmail

doi:10.1016/j.porgcoat.2019.05.027

Cited by 30 publications

(11 citation statements)

References 30 publications

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“…To replace each Si 4+ ion with an Al 3+ ion, the ionic bar must be equalized. This equalization occurs by taking other positive ions like iron, magnesium, and other cations (22). This is completely consistent with the results obtained through the visual evaluation, indicating the presence of aluminum silica and metal oxidations on the membranes surface.…”

Section: Xrf Test Analysissupporting

confidence: 90%

Seawater reverse osmosis membrane fouling causes in a full scale desalination plant; through the analysis of environmental issues: raw water quality

Rezaei

Dehghani

Hassani

et al. 2020

Environ Health Eng Manag

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Background: Membrane clogging is one of the most important problem for desalination plant operators in Iran, therefore, this study was conducted to investigate the main causes of this problem using field analysis. Methods: In this study, six continuous membranes in a reverse osmosis (RO) pressure vessel under the 33-month service period (April 2017 to November 2019) were selected. The membranes were analyzed through visual evaluation of the outer and inner membrane surface, analyzing the damages and physical harms, oxidative stress tests, iron spot test, fouling chemical analysis using loss on ignition (LOI) tests, X-ray fluorescence (XRF), and Fourier-transform infrared (FTIR) spectroscopy. Results: Particle size distribution in raw seawater (EC = 55 000 µs/cm, turbidity = 11 NTU) was 66.4% smaller than 1 µ and 28.3% between 1 to 1.9 µm. Physical damages were not seen on the membranes but telescopic damages were observed which was due to membrane fouling. Removal efficiencies of turbidity and silt density index (SDI) were 84% and 18%, respectively. Membrane oxidation was also seen. Most of the sediments compositions on the membranes were SiO2 , Al2 O3 , MgO, and Fe2 O3 . Biological fouling was detected on the membranes surface. Conclusion: Inaccurate use of chlorine neutralizer caused the residual chlorine to be present in the membrane entering water, which damaged the membrane. Accumulation of clogging agents on membrane surface showed malfunction of pretreatment function, therefore, revision of design and operation of units is necessary. Biological fouling is due to non-effective pre-chlorination of drinking water. Metallic compounds sedimentation on the membrane is due to improper use of anti-fouling chemicals. High SDI in the influent shows the need to change the cartridge filters.

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Section: Xrf Test Analysissupporting

confidence: 90%

Seawater reverse osmosis membrane fouling causes in a full scale desalination plant; through the analysis of environmental issues: raw water quality

Rezaei

Dehghani

Hassani

et al. 2020

Environ Health Eng Manag

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“…Various materials have been studied for RO including cellulose [ 54 ], aquaporin [ 55 ], bentonite [ 56 ], carbon-based materials (graphene [ 57 , 58 ], carbon nanotubes (CNT) [ 59 ], and carbon quantum dot [ 60 ]), bromoacetic groups [ 46 ], zeolites [ 61 ], metal organic frameworks (MOFs) [ 62 ], and metal-based NPs (metals [ 63 , 64 ], metal oxides [ 65 ], and metal alkoxides [ 66 ]). Grafting hydrophilic groups, e.g., polydopamine [ 67 ], polyethylene glycol groups [ 68 , 69 ], and zwitterion groups [ 70 , 71 ], have been reported to improve membrane antifouling properties. Smooth, hydrophilic, and charged surfaces improve antifouling properties and reinforce chlorine resistance [ 48 , 72 ].…”

Section: Reverse Osmosismentioning

confidence: 99%

Frontiers of Membrane Desalination Processes for Brackish Water Treatment: A Review

et al. 2021

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Climate change, population growth, and increased industrial activities are exacerbating freshwater scarcity and leading to increased interest in desalination of saline water. Brackish water is an attractive alternative to freshwater due to its low salinity and widespread availability in many water-scarce areas. However, partial or total desalination of brackish water is essential to reach the water quality requirements for a variety of applications. Selection of appropriate technology requires knowledge and understanding of the operational principles, capabilities, and limitations of the available desalination processes. Proper combination of feedwater technology improves the energy efficiency of desalination. In this article, we focus on pressure-driven and electro-driven membrane desalination processes. We review the principles, as well as challenges and recent improvements for reverse osmosis (RO), nanofiltration (NF), electrodialysis (ED), and membrane capacitive deionization (MCDI). RO is the dominant membrane process for large-scale desalination of brackish water with higher salinity, while ED and MCDI are energy-efficient for lower salinity ranges. Selective removal of multivalent components makes NF an excellent option for water softening. Brackish water desalination with membrane processes faces a series of challenges. Membrane fouling and scaling are the common issues associated with these processes, resulting in a reduction in their water recovery and energy efficiency. To overcome such adverse effects, many efforts have been dedicated toward development of pre-treatment steps, surface modification of membranes, use of anti-scalant, and modification of operational conditions. However, the effectiveness of these approaches depends on the fouling propensity of the feed water. In addition to the fouling and scaling, each process may face other challenges depending on their state of development and maturity. This review provides recent advances in the material, architecture, and operation of these processes that can assist in the selection and design of technologies for particular applications. The active research directions to improve the performance of these processes are also identified. The review shows that technologies that are tunable and particularly efficient for partial desalination such as ED and MCDI are increasingly competitive with traditional RO processes. Development of cost-effective ion exchange membranes with high chemical and mechanical stability can further improve the economy of desalination with electro-membrane processes and advance their future applications.

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“…It can be attributed to the hydration layer around the zwitterionic moiety [ 102 ]. According to Saffarimiandoa et al, zwitterionic sulfobetaine silane coatings showed a strong antibacterial effect against the isolated marine biofouling bacteria and significant biofilm adhesion resistance [ 108 ]. Bodkhea et al showed that the amphiphilic and zwitterionic groups on the surface of fouling-release coatings could improve the coatings’ antifouling performance.…”

Section: Antifouling and Foul-release Coatings For Marine Applicationsmentioning

confidence: 99%

Development of Antibacterial and Antifouling Innovative and Eco-Sustainable Sol–Gel Based Materials: From Marine Areas Protection to Healthcare Applications

Ielo

Giacobello

Castellano

et al. 2021

Gels

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Bacterial colonization of surfaces is the leading cause of deterioration and contaminations. Fouling and bacterial settlement led to damaged coatings, allowing microorganisms to fracture and reach the inner section. Therefore, effective treatment of surface damaged material is helpful to detach bio-settlement from the surface and prevent deterioration. Moreover, surface coatings can withdraw biofouling and bacterial colonization due to inherent biomaterial characteristics, such as superhydrophobicity, avoiding bacterial resistance. Fouling was a past problem, yet its untargeted toxicity led to critical environmental concerns, and its use became forbidden. As a response, research shifted focus approaching a biocompatible alternative such as exciting developments in antifouling and antibacterial solutions and assessing their antifouling and antibacterial performance and practical feasibility. This review introduces state-of-the-art antifouling and antibacterial materials and solutions for several applications. In particular, this paper focuses on antibacterial and antifouling agents for concrete and cultural heritage conservation, antifouling sol–gel-based coatings for filtration membrane technology, and marine protection and textile materials for biomedicine. In addition, this review discusses the innovative synthesis technologies of antibacterial and antifouling solutions and the consequent socio-economic implications. The synthesis and the related physico-chemical characteristics of each solution are discussed. In addition, several characterization techniques and different parameters that influence the surface finishing coatings deposition were also described.

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Evaluation of biofouling behavior of zwitterionic silane coated reverse osmosis membranes fouled by marine bacteria

Cited by 30 publications

References 30 publications

Seawater reverse osmosis membrane fouling causes in a full scale desalination plant; through the analysis of environmental issues: raw water quality

Seawater reverse osmosis membrane fouling causes in a full scale desalination plant; through the analysis of environmental issues: raw water quality

Frontiers of Membrane Desalination Processes for Brackish Water Treatment: A Review

Development of Antibacterial and Antifouling Innovative and Eco-Sustainable Sol–Gel Based Materials: From Marine Areas Protection to Healthcare Applications

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