Functionalization of Silver Nanoparticles on Membranes and its Influence on Biofouling

Sprick, Conor; Chede, Sneha; Escobar, Isabel C.; Craver, Vinka; Harris, Tequila A. L.

doi:10.13023/etd.2017.331

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Particulate/colloidal fouling is produced by a buildup of large macromolecules (aggregates), including biological, organic, and inorganic material on the membrane surface [129,131], creating a cake layer that blocks water from going through pores of the membrane resulting in pores clogging [132]. This affects energy consumption, where the pressure required for operation should increase to enforce the water passing through the membrane [133].…”

Section: Particulate/colloidal Foulingmentioning

confidence: 99%

“…Such foulants are present, grow, and multiply in warm nature with low flow rates and produce a protective material known as extracellular polymeric substance (EPS); thus, the microorganisms and EPS together create a layer called biofilm that resists the backwashing cleaning technique [118]. The EPS is mainly composed of polysaccharides and proteins as well as macromolecule sources, including heteropolysaccharides, lipoproteins, and glycoproteins, and it induces the micro-organism's growth as it creates the favorable conditions for bacteria to grow close to each other [131].…”

Section: Biological Fouling (Biofouling)mentioning

confidence: 99%

See 1 more Smart Citation

Cellulose Acetate Membranes: Fouling Types and Antifouling Strategies—A Brief Review

et al. 2023

View full text Add to dashboard Cite

Cellulose acetate (CA) is a semisynthetic, biodegradable polymer. Due to its characteristics, CA has several applications, including water membranes, filament-forming matrices, biomedical nanocomposites, household tools, and photographic films. This review deals with topics related to the CA membranes, which are prepared using different techniques, such as the phase inversion technique. CA membranes are considered very important since they can be used as microfiltration membranes (MF), ultrafiltration membranes (UF), nanofiltration membranes (NF), reverse osmosis (RO) membranes, and forward osmosis (FO) membranes. Membrane fouling results from the accumulation of materials that the membrane rejects on the surface or in the membrane’s pores, lowering the membrane’s flux and rejection rates. There are various forms of CA membrane fouling, for instance, organic, inorganic, particulate fouling, and biofouling. In this review, strategies used for CA membrane antifouling are discussed and summarized into four main techniques: feed solution pretreatment, cleaning of the membrane surface, membrane surface modification, which can be applied using either nanoparticles, polymer reactions, surface grafting, or surface topography, and surface coating.

show abstract