2020
DOI: 10.1021/acs.iecr.0c01825
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New Antifouling and Antibacterial Membrane Material for Highly Selective Removal of Nitrate and Phosphate

Abstract: To remove nitrate and phosphate from sewage efficiently, current membranes need improved permselectivity, antifouling, and antibacterial properties. Herein, a new hybrid membrane modified with quaternary ammonium and silanol groups was fabricated by doping siloxane quaternary ammonium loaded activated carbon (SiQA) onto poly­(vinylidene fluoride) (PVDF). The hybrid membranes had surface morphology, porosity, membrane pore sizes, and water fluxes typical of ultrafiltration membranes. At a secondary sewage efflu… Show more

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Cited by 15 publications
(8 citation statements)
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“…An antibacterial film is another antibacterial surface in addition to the antibacterial coating, which has attracted considerable attention in water treatment because of its porous structure and ease of manufacture. 123,124 A common way to prepare antibacterial membranes is to inactivate bacteria by adding an antibacterial active substance, such as Ag + , to a polymer matrix, 125 and common matrices include polyurethane, 126 chitosan, 127 and chitin. 128 QASs can be also introduced into the polymer as an antibacterial active substance through physical blending 129 or chemical covalent bonding 130 to improve the antibacterial effect and mechanical properties of the membrane.…”
Section: Qass Antibacterialmentioning
confidence: 99%
See 1 more Smart Citation
“…An antibacterial film is another antibacterial surface in addition to the antibacterial coating, which has attracted considerable attention in water treatment because of its porous structure and ease of manufacture. 123,124 A common way to prepare antibacterial membranes is to inactivate bacteria by adding an antibacterial active substance, such as Ag + , to a polymer matrix, 125 and common matrices include polyurethane, 126 chitosan, 127 and chitin. 128 QASs can be also introduced into the polymer as an antibacterial active substance through physical blending 129 or chemical covalent bonding 130 to improve the antibacterial effect and mechanical properties of the membrane.…”
Section: Qass Antibacterialmentioning
confidence: 99%
“…An antibacterial film is another antibacterial surface in addition to the antibacterial coating, which has attracted considerable attention in water treatment because of its porous structure and ease of manufacture. , A common way to prepare antibacterial membranes is to inactivate bacteria by adding an antibacterial active substance, such as Ag + , to a polymer matrix, and common matrices include polyurethane, chitosan, and chitin . QASs can be also introduced into the polymer as an antibacterial active substance through physical blending or chemical covalent bonding to improve the antibacterial effect and mechanical properties of the membrane. , The main role of QASs in the antibacterial membrane includes two aspects: (1) as a hydrophilic substance, QASs enhances the hydrophilicity of the membrane and reduces the adhesion of bacteria; and (2) as a broad-spectrum antibacterial agent, they kill bacteria on the surface of the membrane by contact to remove biofilm .…”
Section: Application Of Qassmentioning
confidence: 99%
“…111 Embora as membranas incorporadas com nanopartículas inorgânicas sejam as mais difundidas, partículas orgânicas, biomateriais e híbridas podem ser inseridas a matriz polimérica com resultados satisfatórios de eficiência, além das vantagens de se utilizar biomateriais, que são biodegradáveis. [112][113][114] Mohammadi e colaboradores 115 incorporaram biochar das folhas de Rosmarinus officinalis (BRM) em membrana de cloreto de polivinila (PVC). O adsorvente apresentou alta capacidade de adsorção (16,5 mg P g -1 ), sendo que os autores sugeriram que a capacidade de adsorção foi melhorada devido à presença de metais com afinidade ao P na composição do BRM, como Mg 2+ e Ca 2+ .…”
Section: Adsorçãounclassified
“…Thus, QAC-PEI can be cross-linked covalently on BC. Many QACs that can be used directly have appeared in the market. …”
Section: How Antibacterial Functionalization For Water Purification P...mentioning
confidence: 99%
“…The quaternary ammonium groups on QACs are thought to adsorb phosphates and nitrates. Liu et al 112 used dimethyldodecyl [3-(trimethoxysilyl)propyl]ammonium chloride (DTAC) to modify activated carbon. Hydrophobic long chains on DTAC can associate with a nonpolar activated carbon surface through hydrophobic interaction.…”
Section: Membrane Technologymentioning
confidence: 99%