Primena sorbenta na bazi pamučnog otpada iz odevne industrije u obradi obojenih voda

Abstract

The content of the doctoral dissertation includes several research activities that are interwoven and connected into a single whole. The first part of the research is related to the minimization of cotton textile waste from the clothing industry through the example of material optimization in the tailoring of women's t-shirts with the help of software and manual support. The generated waste, as an indispensable part of the tailoring of surface textiles, was used for the production of a cheap powder material with the function of a sorbent for the removal of textile dyes from an aqueous solution. The second part of the research deals with the application of the so-made sorbent from textile waste in the process of color removal on the example of model wastewater that imitates process water after dyeing wool with textile dye. Acidic metal complex dyes of darker shades (blue and red), frequently used for dyeing wool or polyamide, as well as two inexpensive sorbents obtained from the same raw material by different procedures, were used in the work. In general, with this research, two problems were solved: the amount of waste during cutting was reduced and at the same time the problem of disposal of the generated waste was solved through transformation into a new product, a useful and cheap sorbent for the treatment of liquid effluent. The results of the dissertation can be more precisely described by the following facts: a) optimized process of cutting out textile materials during the production of clothes in order to reduce solid textile waste; b) defined the most optimal procedure for the production-synthesis of a cheap sorbent, taking into account the costs and simplicity of the process; c) defined optimal adsorption model (linear and non-linear modelling); d) defined optimal kinetic reaction model of adsorption (linear and non-linear modeling); e) defined optimal kinetic diffusion model of adsorption (linear and non-linear modelling); f) defined mechanism of adsorption of paint and sorbent; g) defined thermodynamic parameters of adsorption; h) defined optimal ratios of the amount of sorbent to the amount of residual textile dye in the solution; i) defined optimal time for maximum equilibrium adsorption of paint on the sorbent; k) practical treatment of factory wastewater at the laboratory level.