Scopus İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12573/395
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Article Citation - Scopus: 3The Surface Charge of Unsupported Nano-Structured Titania Ceramic Membrane Top Layers With Varying Calcination Temperatures(University of Chemical Technology and Metallurgy journal@uctm.edu, 2019) Erdem, İlker; Çiftçiog̀lu, MuhsinTitania is one of the most preferable ceramic membrane materials of superior durability (as zirconia) when compared to that of other ceramics, e.g. alumina or silica. The surface charge of the membrane top layer is an important parameter of the separation performance of the multilayer ceramic membrane due to the Donnan exclusion mechanisms. In this study, the change of the surface charge of unsupported nano-structured titania top layer is investigated with calcination temperature variation. The effect observed indicates the possibility of preparation of tailor-made top layers for multilayer ceramic membranes. © 2019 Elsevier B.V., All rights reserved.Article Citation - Scopus: 2Eco-Friendly Fabrication of Cellulose-Derived Polyvinylidene Fluoride Membranes From Wastepaper for Efficient Fe(II) Removal From Mine Wastewater(Wiley, 2025-08-15) Gul, Ayse; Senol-Arslan, DilekThis study investigates the feasibility of utilizing cellulose membranes derived from wastepaper to remove Fe(II) ions from mine wastewater. In this context, the recycled material cellulose was employed in the membrane synthesis process to produce an environmentally friendly membrane that efficiently removes Fe(II) ions. Furthermore, the study proposes a cost-effective and sustainable solution for removing heavy metals, with comprehensive analysis and experimentation on the potential application of cellulose membranes in the treatment of mine wastewater. The membranes were fabricated from polyvinylidene fluoride (C2H2F2)n (PVDF) and cellulose nanoparticles (CNs) produced from wastepaper by a common phase inversion method. Water filtration and Fe(II) rejection tests were operated on a batch scale. The fabricated CNs were characterized by Fourier transform infrared (FTIR) and SEM-energy-dispersive X-ray (EDX) analyses. Water permeability, contact angle, SEM-EDX analysis and FTIR were used to analyze PVDF/CN membranes. The water flux for PVDF and PVDF + CN membranes increased from 164.5 to 2241 L m-2 h-1 on the addition of CNs from 1% to 3%. The experimental results demonstrate the best cellulose membrane containing 11% PVDF + 2% CN effectively removed approximately 58% of Fe(II). The findings of this research emphasize the importance of environmentally friendly approaches in addressing clean water challenges and highlight the reuse potential of waste materials for innovative applications. Consequently, this study provides an alternative to the development of sustainable and cost-effective solutions for wastewater treatment in accordance with the principles of circular economy and environmental sustainability. (c) 2025 Society of Chemical Industry.