The textile industry is the second most environmentally polluting industry in the world after the petroleum industry. Approximately 25% of global chemicals are used in textile production, around 10% of the world's CO2 emissions are generated by the textile industry, and it consumes more water than any other industry. Annually, about 92 million tons of textile waste are produced, with only an estimated 10-30% of the waste being recycled. Textile waste can be reused or recycled using various methods for thermal insulation materials. The aim of this study is to analyze and compare recycled thermal insulation materials with conventional thermal insulation materials based on economic and environmental criteria. By using the DEXi software tool, a multicriteria analysis was conducted between recycled textile and conventional thermal insulation materials based on economic and environmental criteria. In terms of economic and environmental criteria, conventional thermal insulation materials have an advantage over thermal insulation materials made from recycled textiles. In conclusion, the decision on which option is better depends on the specific requirements of the project. If sustainability is a key priority, based on all available information, thermal insulation made from recycled textiles is the better choice. However, if priorities are focused on heat insulation, moisture resistance, and durability, EPS is currently the better option. According to the planned scenario, there is a possibility that the efficiency of both thermal insulation materials can be balanced through additional research and improvement.

The objective of the practical part in this article was to explore the influence of different parameters on coagulation and flocculation processes as well as the influence of this stage on other stages in water purification. Analysis of the water samples was conducted in the chemical laboratory of Banja Luka Municipal Waterworks using standard methods for analyzing drinking water. The results are presented as diagrams that show the dependence of different parameters as a function of the residual turbidity and the content of natural organic matters in water. The following conclusions were drawn It is necessary to conduct the chemical treatment of raw water with the aim to satisfy chemical and bacteriological standards for drinking water. The best results were achieved with Al2(SO4)s as coagulant,. Counterrecoil sludge in an amount of 2-3% in relation with the total quantity of water has a positive impacts on coagulation-flocculation processes. 4. For effective purification, all the conditions for coagulation-flocculation must be adjusted for the filter to have a longer useful life. One of example is correction of the pH to pH=7, coagulant dose 20 mg/L Al2(SO4)s, flocculant dose 0.1 mg/L PE, counterrecoil sludge dose 90 L/h PM.