Biofouling potential and environmental factors of seawater at a desalination plant intake

Azis, P.K.A.; Al-Tisan, Ibrahim; Sasikumar, N.

doi:10.1016/s0011-9164(01)00140-0

Cited by 79 publications

(6 citation statements)

References 3 publications

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“…Therefore, we performed three cycles of fouling/cleaning experiments to evaluate the biofouling reversibility of the pristine polysulfone and GO-functionalized membranes. Each cycle comprised a biofouling step for 2 h followed by a physical cleaning step for 15 min at a crossflow velocity of 11.1 cm s –1 , which is in accordance with the typical operation of UF systems. The water flux decline during biofouling and the flux recovery after cleaning are shown in Figure . During the 2 h biofouling for each cycle, a moderate flux decline was observed for the GO-coated membrane, while the pristine and GO-blended membranes showed a rapid decrease in water flux.…”

Section: Resultsmentioning

confidence: 58%

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Graphene Oxide-Functionalized Membranes: The Importance of Nanosheet Surface Exposure for Biofouling Resistance

Cheng

Kaneda

et al. 2019

Environ. Sci. Technol.

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Surface functionalization using two-dimensional (2D) graphene oxide (GO) materials is a promising technique to enhance the biofouling resistance of membranes used in water purification and reuse. However, the role of GO exposure, which is crucial for the contact-mediated toxicity mechanism, has not been well evaluated or elucidated in previous studies. Herein, we employ bioinspired polydopamine chemistry to fabricate GO-functionalized membranes through two strategies: coating and blending. The two types of GO-functionalized membranes displayed comparable roughness, hydrophilicity, water permeability, and solute retention properties but different degrees of GO nanosheet exposure on the membrane surface. When in contact with the model bacterium, Escherichia coli, the GO-coated membrane exhibited enhanced biofouling resistance compared to that of the GO-blended membrane, as evidenced by lower viable cells in static adsorption experiments, and lower water flux decline and higher flux recovery in dynamic biofouling experiments. Moreover, the development of biofilm on the GO-coated membrane was also inhibited to a greater extent than on the GO-blended membrane. Taken together, our findings indicate the paramount importance of GO exposure on the membrane surface in conferring antibacterial activity and biofouling resistance, which should be considered in the future design of antibiofouling membranes using 2D nanomaterials.

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Section: Resultsmentioning

confidence: 58%

“…In addition, the high FRR of the GO-coated membrane suggests good mechanical stability of the grafted GO under the rinsing conditions employed. Compared to the suggested backwash interval of 20–60 min in real UF systems, our GO-coated membrane displayed high cleaning reversibility even in 2 h biofouling tests.…”

Section: Resultsmentioning

confidence: 83%

Graphene Oxide-Functionalized Membranes: The Importance of Nanosheet Surface Exposure for Biofouling Resistance

Cheng

Kaneda

et al. 2019

Environ. Sci. Technol.

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“…Each cycle included a 1.5 h precompaction with 10 mM PBS (pH 7.4), a 1.5 h filtration of 1 g/L BSA solution in PBS, and a 20 min backwashing with PBS, resembling typical UF operation systems. 36 During precompaction and filtration, the operating pressure was set at 30 psi by nitrogen gas, and the temperature was maintained at 25 °C. The initial and final permeate fluxes (J 0 and J BSA , respectively) were recorded at the beginning and end of the filtration step.…”

Section: ■ Introductionmentioning

confidence: 99%

Tailoring Thermoresponsive Polymer Architecture to Enhance Antifouling and Fouling Reversibility of Membranes

Jeon,

Lee,

Zhong

et al. 2023

Environ. Sci. Technol.

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Cleaning a fouled membrane using warm water, instead of commonly used fouling control chemicals, is an approach advocated in resource-limited settings, where smallscale membrane filtration is used to provide clean water. Thermoresponsive polymers coated onto membranes undergo a conformational change across their lower critical solution temperature (LCST), enabling foulant removal during such temperatureswing cleaning. However, their intrinsic hydrophobicity above the LCST poses a fundamental material challenge. In this study, we examine how thermoresponsive polymers can be optimally copolymerized with hydrophilic polymers by precisely manipulating monomer arrangement of thermoresponsive N-isopropylacrylamide and hydrophilic 2-[2-(2-methoxyethoxy)ethoxy]ethyl acrylate. We successfully grafted these copolymers with different monomer arrangements onto poly(ether sulfone) ultrafiltration membranes while maintaining other polymer characteristics, such as the degree of polymerization and grafting density, constant. We found that placing hydrophilic polymer blocks at the outermost surface above the thermoresponsive polymer blocks is critical to achieving high surface hydrophilicity while preserving the thermoresponsive functionality. We demonstrate enhanced fouling resistance and efficient temperature-swing cleaning with optimized copolymer design based on their interaction with bovine serum albumin during static adsorption, filtration, and cleaning processes. These findings emphasize the importance of accurately tailoring the polymer architecture to enable more efficient filtration with reduced fouling and the capability to effectively clean the fouled membrane by simply using warm water.

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“…Este proceso no es nuevo; existen registros desde la antigüedad (WHOI, 1952). Las pérdidas económicas globales debido a la bioincrustación marina fueron de quince mil millones de dólares en 2001 (Azis, et al, 2001). Esto incluye el costo de su prevención, el mantenimiento de la infraestructura (biocorrosión, aumento de peso y obstrucción), y el consumo de combustible (Schultz, et al, 2011).…”

Section: Introductionunclassified

Pinturas antiincrustantes derivadas de plantas terrestres una solución segura para el ambiente en el control de la bioincrustación

Agostini

Pinho

Muxagata

et al. 2021

INNOTEC

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Resumen: Los invertebrados (por ejemplo, cirripedios y mejillones) son los principales responsables de las pérdidas económicas a nivel industrial y naval de la bioincrustación, agravada por la colonización de especies invasoras (por ejemplo, el mejillón dorado, Limnoperna fortunei). Se han utilizado diversas estrategias para controlar la bioincrustación. Sin embargo, no son eficientes o causan una alta mortalidad de organismos acuáticos, incluso las tintas antiincrustantes. Actualmente, con la necesidad de preservar la salud humana y ambiental, se han enfocado en la investigación de nuevos agentes naturales para reemplazar las moléculas sintéticas tóxicas de estas pinturas. El estudio de productos naturales bioactivos a partir de plantas terrestres ha sido una opción prometedora en el campo clínico y puede tener el mismo potencial en el acuático. Así, la principal pregunta de este estudio es: ¿Cómo seleccionar los extractos y compuestos más prometedores? Este trabajo analizó artículos publicados sobre el tema con el objetivo de resaltar la información necesaria para centrar las investigaciones en antiincrustantes derivados de plantas terrestres. Se examinaron 29 artículos entre 1990 y 2020. Los productos naturales derivados de plantas terrestres tienen un gran potencial como antiincrustantes sostenibles, inhibiendo la colonización de micro y macrofouling. Los compuestos alcaloides y flavonoides de las familias Zingiberaceae, Myrtaceae y Fagaceae ya han mostrado resultados prometedores contra mejillones.

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Biofouling potential and environmental factors of seawater at a desalination plant intake

Cited by 79 publications

References 3 publications

Graphene Oxide-Functionalized Membranes: The Importance of Nanosheet Surface Exposure for Biofouling Resistance

Graphene Oxide-Functionalized Membranes: The Importance of Nanosheet Surface Exposure for Biofouling Resistance

Tailoring Thermoresponsive Polymer Architecture to Enhance Antifouling and Fouling Reversibility of Membranes

Pinturas antiincrustantes derivadas de plantas terrestres una solución segura para el ambiente en el control de la bioincrustación

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