Browsing by Author "Siekierka Anna"
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- ItemModified Nanofiber Membrane for Cleaning of Oily Wastewater(2021) Yalcinkaya Fatma; Siekierka Anna; Hrůza Jakub; Maryška Jiří; Bryjak Marek
- ItemModified PVDF Nanofibrous Membranes for the Separation of Oil-Water Emulsion(Technical University of Liberec, 2019) Yalcinkaya Fatma; Siekierka AnnaOily wastewater pollution has become one of the major concerns around the world due to the rapid growth of consumption related to population growth and industrialization in petrochemical, oil, gas and auto industries. For this reason, nanofibrous hybrid membranes have been prepared for the separation of an oil-water emulsion. Using surface modification, the membrane selectivity was changed successfully. Results indicated that nanofibrous membranes are a good candidate for wastewater treatment.
- ItemPreparation of Fouling-Resistant Nanofibrous Composite Membranes for Separation of Oily Wastewater(Multidisciplinary Digital Publishing Institute (MDPI), 2017) Yalcinkaya Fatma; Siekierka Anna; Bryjak MarekA facile and low-cost method has been developed for separation of oily wastewater. Polyvinylidene fluoride/polyacrylonitrile (PVDF/PAN) nanofibers laminated on a supporting layer were tested. In order to create highly permeable and fouling-resistant membranes, surface modifications of both fibers were conducted. The results of oily wastewater separation showed that, after low vacuum microwave plasma treatment with Argon (Ar) and chemical modification with sodium hydroxide (NaOH), the membranes had excellent hydrophilicity, due to the formation of active carboxylic groups. However, the membrane performance failed during the cleaning procedures. Titanium dioxide (TiO2) was grafted onto the surface of membranes to give them highly permeable and fouling-resistance properties. The results of the self-cleaning experiment indicated that grafting of TiO2 on the surface of the membranes after their pre-treatment with Ar plasma and NaOH increased the permeability and the anti-fouling properties. A new surface modification method using a combination of plasma and chemical treatment was introduced.
- ItemPreparation of various nanofibrous composite membranes using wire electrospinning for oil-water separation(Institute of Physics Publishing, 2017) Yalcinkaya Fatma; Siekierka Anna; Bryjak Marek; Maryška Jiří
- ItemSurface modification of electrospun nanofibrous membranes for oily wastewater separation(ROYAL SOC CHEMISTRY, 2017) Yalcinkaya Fatma; Siekierka Anna; Bryjak Marek