Leather has limited uses in smart or advanced applications because it doesn’t conduct electricity. Applying double in situ–polymerization of pyrrole gives leather conductive properties. The treated leather changes its natural color into black color going through this double in–situ polymerization method and show very good conductivity. The problem we faced was the losing in color while using it in different applications. Therefore, in this research, we have concluded an increasement of the color fastness resistance of the black leather, which was demonstrated by the electro conductive measurements and good resistance to rubbing.

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The development of low-cost adsorbent coal FA (Kosovo A) for pesticide removal is an important area of scientific research. With this study, we show the potential of adsorption of coal FA (Kosovo A) for the removal of benalaxyl and atrazine from water. We have found that the amount of adsorbed benalaxyl and atrazine increases with an increasing amount of coal FA (Kosovo A) in solution. The maximum capacity coal FA (Kosovo A) to adsorb benalaxyl and atrazine was found to be 0.46 and 0.45 mg/g according to the Freundlich equation and 3.48 and 3.33 mg/g according to the Langmuir equation. The Freundlich adsorption equation better explains the adsorption results of pesticides (benalaxyl and atrazine) in coal FA (Kosovo A), as the values of the recovery coefficient (R2) were higher in Freundlich equation than the Langmuir equation. The adsorption isotherms were of type L and show that the adsorption efficiency of the coal FA (Kosovo A) depends on the initial concentration of benalaxyl and atrazine in solution and the maximum removal of benalaxyl and atrazine was achieved at concentrations less than 10 µg/ml. This study’s results are expected to have implications for the use of coal FA (Kosovo A) for the removal of pesticides from water.

The aim of this research was to study the adsorption progress of Benalaxyl from natural and activated clays of Brari and Dardha, so that these clays can be used for practical purposes fof soil and water purification. The natural clay materials originated from the regions of Brari (Tirana) 41 ° 21′14.49 ″ N; 19 ° 50′17.74.E and Dardha (Korça) 40 ° 31′16.59 ″ N; 20 ° 49′33.69 ″ E. SEM images of Dardha clay show a finer dispersity than Brari clay. Powder XRD analysis of reveal remarkable differences in their composition. Dardha clay shows a higher content of SiO2, Al2O3 and CaO than Brari clay. The adsorption dependence of Benalaxyl on Brari and Dardha clays was studied at t = 20ºC and contact time: 12h; 24h; 48h; 72h, considering Benalaxyl concentrations of 0.1 g/l and 0.3 g/l. Based on the time of contact clay-aqueous solution of benalaxyl, 48h to 72h showed significant adsorption of Benalaxyl onto clays, therefore this time interval is presented and oriented further studies in this time interval. Time intervals longer than 72h showed no interest because the rate of hydrolysis increased. Most of Benalaxyl is desorbed from both clays within the first 2 hours. Dardha clay desorbs better than Brari clay.

Clay minerals are natural products with very high absorbent, ion-exchange and catalytic properties; chemical nature and pore structure have an important impact on these properties. In this paper, it is proposed to modify the Bentonite clay of Kosovo (Goshica region) by acid and alkali activation to be used for oil recycling. Acid and alkali activation was performed in ratios (10, 30 and 50%) in order to see the effect of acid and alkali treatment on the properties of Goshica Bentonite. The samples were characterized using X-ray powder diffraction (XRD), Fourier transform infrared (FTIR), structural and chemical analysis. Physio-chemical analysis was performed to find out the best activation treatment in order to increase the bentonite´s adsorption and ions exchange capacity. Significant changes were observed in the original pore structure. All the conclusions drawn correlate well with the amount of activator used. This study will provide valuable data on the effect of acid and alkali activated bentonite for the treatment and recyclability of UMO, which is essential for local industry.