Development of polyester filters with polymer nanocomposite active layer for effective dye filtration

Abstract

Organic dyes such as methyl orange (MO) and methylene blue (MB) are widely used in different industries and have become one of the leading emerging water contaminants. The purpose of the current research is to develop new polymer nanocomposite filters for the effective elimination of the dyes, which are non-biodegradable and not efficiently removed by traditional treatment methods. New padded and covered filters were produced applying polystyrene-acrylic/ZnO nanocomposite on the polyester surface by blade coating and one-bath pad methods. Principal results determined by SEM analysis confirm that functionalised layer can create unprecedented function of filter textile material depending on the way of treatment. Due to the modification, the surface area increased from 5.9 for untreated polyester to 85.2 (padded), 44.6 (covered) m2/g. The measured pore size of produced filters is around 3.4 nm, which corresponds to the mesoporous structure. Our study reported effective filters with the rate of MB and MO removal efficiencies up to 60%. Moreover, a colourless reduced form of MB—leuco-methylene blue (LMB) could be created. The functionalised layer of the developed filters through hydrogen bonding between the –OH groups of styrene-acrylic molecules and the –N(CH3)2 groups on LMB can stabilise LMB.

Thermodynamics, kinetics and isothermal studies of tartrazine adsorption onto microcline/MWCNTs nanocomposite and the regeneration potentials

“…In a bid to sequester water contaminants from the aquatic ecosystem, different types of physicochemical/biological methods have been employed. Some of these treatment techniques include electrochemical techniques 6 , biological treatments 7 , extraction 8 , ion exchange 9 , filtration 10 , photodegradation 11 – 14 , chemical precipitation 15 , membrane bioreactor 16 and reverse osmosis 17 . On the other hand, the application of these methods for pollutant removal is limited and this is due to the possible generation of a toxic secondary pollutant, elevated operational cost and inefficiency at low pollutant concentration 18 , 19 .…”

Effect of self–assembled iron–tannic nanoparticles on the fastness and antibacterial properties of natural indigo dyed polyester cotton blended fabrics from Strobilanthes cusia (Nees) Kuntze

“…The surface chemical modifications of fabrics were further investigated using ATR-FTIR as shown in figure 4(b). The characteristic band of polyester appeared at 1715 cm -1 , 1235 cm , and 1017 cm -1 are assigned to the C=O symmetric stretching, C-O bond stretching from acid and ester, respectively [7]. In addition, the peaks at 2904, 1425, 1105, 1054, and 897 cm -1 are from cotton cellulose, assigned to C-H stretching vibration, CH2 symmetric bending, C-O-C glycosidic ether bond, C-O stretching vibration, and C-H rocking vibration, respectively [8,9].…”

Novel Synthesis Strategy for the Use of Silica‐Based Composites Modified With Styrene‐Acrylic Copolymer as High‐Performance Adsorbents for Cationic Dyes Removal From Aqueous Environment

“…[47] The static sorption capacity calculations shown in Table 3, in mmol/g, suggest that the sorption capacity of the first two samples is greater than the number of carboxyl groups. This suggests that the dye molecules may be adsorbed on the carboxylic acid groups and physisorbed on the styrol groups, [48] as well as in polylayers with dye-dye interactions.…”