## 3 Results
### Infrared Spectroscopy Analysis
Changes in Temperature, Moisture, pH, Electrical Conductivity, Heavy Metal Contents, and Microbial Concentration during the Composting Process  
The initial temperatures of the compost were 15 \({}^{\circ}\)C, 14.3 \({}^{\circ}\)C, and 10.5 \({}^{\circ}\)C, respectively, for mixes A, B, and C, which were close to the ambient temperature of 10 \({}^{\circ}\)C. As composting proceeded, these temperatures increased rapidly; the highest temperatures were observed after 28 weeks of treatment, with 53 \(\pm\) 3 \({}^{\circ}\)C, 46.5 \(\pm\) 1.2 \({}^{\circ}\)C, and 42 \(\pm\) 1 \({}^{\circ}\)C, respectively, for mixes A, B, and C (Figure 2A), which far exceeded the ambient temperature of 36\(\pm\)1 \({}^{\circ}\)C. Afterwards, the temperatures decreased until the end of the treatment, to 39 \(\pm\) 1 \({}^{\circ}\)C, 31 \(\pm\) 1.3 \({}^{\circ}\)C, and 23 \(\pm\) 2.7 \({}^{\circ}\)C, respectively, for mixes A, B, and C. Regarding the moisture content of the compost, initially it was 71.22 \(\pm\) 1.22%, 78.22 \(\pm\) 0.23%, and 69.97 \(\pm\) 0.01%, respectively, for mixes A, B, and C. Throughout the duration of the treatment, decreases in humidity until the end of the treatment, to 10.82 \(\pm\) 1.02%, 30.84 \(\pm\) 0.40%, and 37.24 \(\pm\) 2.30% (Figure 2B), were noted. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Time** & \multicolumn{3}{c}{**Total Organic Carbon (\%)**} & \multicolumn{3}{c}{**Total Nitrogen (\%)**} & \multicolumn{3}{c}{**C/N Ratio**} \\ \cline{2-10} **(Weeks)** & \multicolumn{1}{c}{**Mix A**} & \multicolumn{1}{c}{**Mix B**} & \multicolumn{1}{c}{**Mix C**} & \multicolumn{1}{c}{**Mix A**} & \multicolumn{1}{c}{**Mix B**} & \multicolumn{1}{c}{**Mix C**} & \multicolumn{1}{c}{**Mix A**} & \multicolumn{1}{c}{**Mix B**} & \multicolumn{1}{c}{**Mix C**} \\ \hline
1 & 43.96 \(\pm\) 0.90 & 40.72 \(\pm\) 0.62 & 32.64 \(\pm\) 1.50 & 1.35 \(\pm\) 0.09 & 1.04 \(\pm\) 0.06 & 0.56 \(\pm\) 0.10 & 32.56 & 39.15 &  
Several studies have indicated that pH is one of the most important indicators of the final quality of compost and the progress of composoting [29; 30]. The evolution of the pH during composoting is illustrated in Figure 3A. The initial pH values of the compost were \(7.62\pm 0.08\), \(7.9\pm 0.23\), and \(8.37\pm 0.34\), respectively, for mixes A, B, and C. At the middle of the composoting period, an increase in pH values to \(8.07\pm 0.08\), \(7.76\pm 0.20\), and \(8.59\pm 0.34\) was recorded, followed by a decrease until the end of the treatment, to \(6.41\pm 0.34\), \(6.12\pm 0.27\), and \(6.02\pm 0.18\), respectively, for mixes A, B, and C (Figure 3A). Regarding the electrical conductivity, throughout the duration of the treatment, a noteworthy increase in electrical conductivity was observed up to the end of the treatment, to values of \(1.79\pm 0.04\), \(1.74\pm 0.07\), and \(1.24\pm 0.09\) (Figure 3B). Figure 2: Changes in temperature (**A**) and moisture (**B**) during the composoting of different mixtures. In order to assess the contents of heavy metals, four elements--chromium (Cr), copper (Cu), zinc (Zn), and nickel (Ni)--were studied at different stages of textile waste composite. A significant decrease in the concentration of all the heavy metals studied was recorded towards the end of the process for the mixes A, B, and C, reaching respective values of \(68\pm 5.65\) mg/kg, \(65\pm 7.41\) mg/kg, and \(78\pm 4.24\) mg/kg for Cr; \(120\pm 1.24\) mg/kg, \(160\pm 6.36\) mg/kg, and \(100\pm 5.26\) mg/kg for Cu; \(320\pm 4.24\) mg/kg, \(210\pm 6.53\) mg/kg, and \(398\pm 2.24\) mg/kg for Zn; and \(60\pm 2.12\)mg/kg, \(51\pm 6.53\) mg/kg, and \(59\pm 1.40\) mg/kg for Ni (Figure 4a-c). Regarding the phytotoxicity of the final composts and their ability to germinate corn seeds, an analysis of the germination index was carried out.