Abstract
This study produced a novel polysulfone (PSF) membrane for dye removal using lemon-derived carbon quantum dots-grafted silver nanoparticles (Ag/CQDs) as membrane nanofiller. The preparation of CQDs was completed by undergoing hydrothermal treatment to carbonize the pulp-free lemon juice into CQD solution. The CQD solution was then coupled with Ag nanoparticles to form Ag/CQDs nanohybrid. The synthesized powders were characterized in terms of morphologies, functional groups and surface charges. A set of membranes was fabricated with different loadings of Ag/CQDs powder using the nonsolvent-induced phase separation (NIPS) method. The modified membranes were studied in terms of morphology, elemental composition, hydrophilicity and pore size. In addition, pure water flux, rejection test and fouling analysis of the membranes were evaluated using tartrazine dye. From the results, 0.5 wt % of Ag/CQD was identified as the optimum loading to be incorporated with the pristine PSF membrane. The modified membrane exhibited an excellent pure water permeability and dye rejection with improvements of 169% and 92%, respectively. In addition, the composite membrane also experienced lower flux decline, higher reversible fouling and lower irreversible fouling. This study has proven that the addition of CQD additives into membrane greatly improves the polymeric membrane’s properties and filtration performance.
Funder
Universiti Tunku Abdul Rahman
Kementerian Sains, Teknologi dan Inovasi
Subject
Filtration and Separation,Chemical Engineering (miscellaneous),Process Chemistry and Technology
Reference56 articles.
1. Sustainable Development Goal 6 Synthesis Report 2018 on Water and Sanitationhttps://www.unwater.org/publication_categories/sdg-6-synthesis-report-2018-on-water-and-sanitation/
2. Textile dye wastewater characteristics and constituents of synthetic effluents: A critical review;Scholz;Int. J. Environ. Sci. Technol.,2019
3. The Textile Industry and Sustainable Development: A Holt–Winters Forecasting Investigation for the Eastern European Area
4. Photocatalytic removal of tartrazine dye from aqueous samples on LaFeO3/ZnO photocatalysts;Vaiano;Chem. Eng. Trans.,2016
5. Decolourization of tartrazine from aqueous solutions by coupling electrocoagulation with ZnO photocatalyst;Modirshahla;Environ. Prot. Eng.,2013
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