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Fabrication of polyamide thin-film nanocomposite membranes with enhanced surface charge for nitrate ion removal from water resources.
Environ Technol 2017; 38(6):772-781ET

Abstract

Exclusion due to membrane surface charge is considered as one of the main separation mechanisms occurring in charged membranes, which can be varied through various approaches to affect membrane rejection performance. In this study, thin-film composite (TFC) polyamide (PA) membranes were fabricated via interfacial polymerization of m-phenylenediamine (m-PDA) and 2,4-diaminobenzene sulfonic acid with trimesoyl chloride (TMC) on a polysulfone sub-layer. The ability of the prepared membrane to remove nitrate ions from water resources has been investigated. In order to improve membrane permeability, zeolite-PA thin film nanocomposite (TFN) membranes were fabricated by incorporating natural zeolite nanoparticles obtained through ball milling of an Iranian natural zeolite powder in the interfacial polymerization process. The size, morphology and specific surface area of the as-obtained nanozeolite were characterized using particle size analysis, FE-SEM and BET. The functional groups, morphology and surface charge of the membrane were characterized using ATR-FTIR, SEM and zeta potential analyses. Also, field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectroscopy (EDS) were used to determine the distribution of nanozeolite in TFN membranes. The influence of zeolite addition to surface roughness was accessed by atomic force microscopy. The performance of TFC and TFN membranes was evaluated in terms of pure water flux and nitrate rejection. The results showed that in case of sulfonated diamine, nitrate ions rejection was enhanced from 63% to 85% which could be attributed to surface charge enhancement. TFN permeability was almost doubled by the addition of nanozeolite.

Authors+Show Affiliations

a Department of Life Science Engineering, Faculty of New Sciences & Technologies , University of Tehran , Tehran , Iran.b Faculty of Advanced Technologies, Nano Chemical Engineering Department , Shiraz University , Shiraz , Iran.b Faculty of Advanced Technologies, Nano Chemical Engineering Department , Shiraz University , Shiraz , Iran.b Faculty of Advanced Technologies, Nano Chemical Engineering Department , Shiraz University , Shiraz , Iran.c Department of Biomaterials , Iran Polymer and Petrochemical Institute , Tehran , Iran.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28191867

Citation

Ghaee, A, et al. "Fabrication of Polyamide Thin-film Nanocomposite Membranes With Enhanced Surface Charge for Nitrate Ion Removal From Water Resources." Environmental Technology, vol. 38, no. 6, 2017, pp. 772-781.
Ghaee A, Zerafat MM, Askari P, et al. Fabrication of polyamide thin-film nanocomposite membranes with enhanced surface charge for nitrate ion removal from water resources. Environ Technol. 2017;38(6):772-781.
Ghaee, A., Zerafat, M. M., Askari, P., Sabbaghi, S., & Sadatnia, B. (2017). Fabrication of polyamide thin-film nanocomposite membranes with enhanced surface charge for nitrate ion removal from water resources. Environmental Technology, 38(6), pp. 772-781. doi:10.1080/09593330.2016.1231223.
Ghaee A, et al. Fabrication of Polyamide Thin-film Nanocomposite Membranes With Enhanced Surface Charge for Nitrate Ion Removal From Water Resources. Environ Technol. 2017;38(6):772-781. PubMed PMID: 28191867.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fabrication of polyamide thin-film nanocomposite membranes with enhanced surface charge for nitrate ion removal from water resources. AU - Ghaee,A, AU - Zerafat,M M, AU - Askari,P, AU - Sabbaghi,S, AU - Sadatnia,B, Y1 - 2016/09/26/ PY - 2017/2/14/entrez PY - 2017/2/14/pubmed PY - 2017/3/3/medline KW - Polyamide KW - enhanced negative charge KW - natural zeolite KW - nitrate ion KW - sulfonated diamine SP - 772 EP - 781 JF - Environmental technology JO - Environ Technol VL - 38 IS - 6 N2 - Exclusion due to membrane surface charge is considered as one of the main separation mechanisms occurring in charged membranes, which can be varied through various approaches to affect membrane rejection performance. In this study, thin-film composite (TFC) polyamide (PA) membranes were fabricated via interfacial polymerization of m-phenylenediamine (m-PDA) and 2,4-diaminobenzene sulfonic acid with trimesoyl chloride (TMC) on a polysulfone sub-layer. The ability of the prepared membrane to remove nitrate ions from water resources has been investigated. In order to improve membrane permeability, zeolite-PA thin film nanocomposite (TFN) membranes were fabricated by incorporating natural zeolite nanoparticles obtained through ball milling of an Iranian natural zeolite powder in the interfacial polymerization process. The size, morphology and specific surface area of the as-obtained nanozeolite were characterized using particle size analysis, FE-SEM and BET. The functional groups, morphology and surface charge of the membrane were characterized using ATR-FTIR, SEM and zeta potential analyses. Also, field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectroscopy (EDS) were used to determine the distribution of nanozeolite in TFN membranes. The influence of zeolite addition to surface roughness was accessed by atomic force microscopy. The performance of TFC and TFN membranes was evaluated in terms of pure water flux and nitrate rejection. The results showed that in case of sulfonated diamine, nitrate ions rejection was enhanced from 63% to 85% which could be attributed to surface charge enhancement. TFN permeability was almost doubled by the addition of nanozeolite. SN - 0959-3330 UR - https://www.unboundmedicine.com/medline/citation/28191867/Fabrication_of_polyamide_thin_film_nanocomposite_membranes_with_enhanced_surface_charge_for_nitrate_ion_removal_from_water_resources_ L2 - http://www.tandfonline.com/doi/full/10.1080/09593330.2016.1231223 DB - PRIME DP - Unbound Medicine ER -