Antimicrobial PVK:SWNT nanocomposite coated membrane for water purification: Performance and toxicity testing
| dc.contributor.author | Ahmed, Farid | |
| dc.contributor.author | Santos, Catherine M. | |
| dc.contributor.author | Mangadlao, Joey D. | |
| dc.contributor.author | Advincula, Rigoberto C. | |
| dc.contributor.author | Rodrigues, Debora F. | |
| dc.date.accessioned | 2020-03-10T18:19:22Z | |
| dc.date.available | 2020-03-10T18:19:22Z | |
| dc.date.issued | 8/1/2013 | |
| dc.description.abstract | This study demonstrated that coated nitrocellulose membranes with a nanocomposite containing 97% (wt%) of polyvinyl-N-carbazole (PVK) and 3% (wt%) of single-walled carbon nanotubes (SWNTs) (97:3 wt% ratio PVK:SWNT) achieve similar or improved removal of bacteria when compared with 100% SWNTs coated membranes. Membranes coated with the nanocomposite exhibited significant antimicrobial activity toward Gram-positive and Gram-negative bacteria (?80–90%); and presented a virus removal efficiency of ?2.5 logs. Bacterial cell membrane damage was considered a possible mechanism of cellular inactivation since higher efflux of intracellular material (Deoxyribonucleic acid, DNA) was quantified in the filtrate of PVK-SWNT and SWNT membranes than in the filtrate of control membranes. To evaluate possible application of these membrane filters for drinking water treatment, toxicity of PVK-SWNT was tested against fibroblast cells. The results demonstrated that PVK-SWNT was non toxic to fibroblast cells as opposed to pure SWNT (100%). These results suggest that it is possible to synthesize antimicrobial nitrocellulose membranes coated with SWNT based nanocomposites for drinking water treatment. Furthermore, membrane filters coated with the nanocomposite PVK-SWNT (97:3 wt% ratio PVK:SWNT) will produce more suitable coated membranes for drinking water than pure SWNTs coated membranes (100%), since the reduced load of SWNT in the nanocomposite will reduce the use of costly and toxic SWNT nanomaterial on the membranes. | |
| dc.identifier.uri | https://hdl.handle.net/10657/6017 | |
| dc.language.iso | en_US | |
| dc.publisher | Water Research | |
| dc.subject | Nitrocellulose membrane | |
| dc.subject | Single-walled carbon nanotubes | |
| dc.subject | Nanocomposite | |
| dc.subject | Bacteria | |
| dc.subject | DNA | |
| dc.subject | Cytotoxicty | |
| dc.title | Antimicrobial PVK:SWNT nanocomposite coated membrane for water purification: Performance and toxicity testing | |
| dc.type | Article |