## 3 Results and Discussion
### Effect of the Bio-Augmentation on the Composting Process  
#### 3.2.1 Evolution of Bacterial Growth  
Bacterial growth evolution is depicted in Figure 1. From the beginning, the three isolated strains (S1, S2, and S3) and their consortium experienced considerable growth. All of the isolates grew swiftly with a maximum value at a time corresponding to the 8 th week (Figure 1a-d). Nevertheless, the bacterial growth was significantly higher with the consortium relative to the pure culture (\(p\)-value < 0.05). Equally, the bacterial growth was considerably higher using these selected strains, with maximum growth reached in 8 weeks compared to the basic composting without inoculation, with a maximum of growth in 28 weeks [6], which could be assigned to the antibiosis phenomenon between the different microbial strains existing during the classical composting, and consequently prevent the growth of the strains which allows organic matter degradation, including those isolated. No growth of bacteria was noticed with a negative test (T) without bacteria, thus proving that organic matter decaying has been accomplished by the strains isolated. Moreover, the increase in microbial activity using these strains could be explained on the one hand by the fact that these isolates have already been adapted to the compost environment and have the ability to resist toxic molecules of textile waste. On the other hand, it could be explained by the abundance of organic matter with nutrients such as carbon and nitrogen, which are indispensable for microorganism's growth and therefore stimulates their proliferation. The decrease in microbial growth towards the end of the test could be linked to the depletion of medium [19]. 2.2 Evaluation of Temperature, Total Organic Carbon, (TOC) Total Kjeldahl Nitrogen (TKN), and C/N Ratio  
The effects of inoculum doses on some physical-chemical parameters (Temperature, TOC, TKN, and C/N ratio) are depicted during this investigation. Measurement of temperature using different inoculum doses is presented in Figure 2. A noteworthy increase in temperature was noticed with the three strains and their consortium, depending on different inoculum concentrations (4%, 6%, and 8%). The highest temperature was recorded with strain S3 whatever the inoculum dose, and for strain S3 (42 \({}^{\circ}\)C) and the consortium (54.17 \({}^{\circ}\)C) at the inoculum dose of 8% (Figure 1). The increase in temperature could be mainly ascribed according to several authors to microbial metabolisms resulting from the decomposition of organic matter, particularly carbohydrates, thus releasing energy during their degradation [6; 15; 20]. [PERSON] et al. [21] have shown the presence of carbohydrates in composted waste like cellulose through FTIR analysis, thus confirming that this increase of the temperature could be explained by the break of these carbohydrates by the isolated strains used. Figure 1: Evolution of bacterial growth of the three strains isolated and their consortium as function of the time at different inoculum doses (4% (**a**), 6% (**b**), and 8% (**c**)). S1: Strain 1; S2: Strain 2; S3: Strain 3; (**d**) C: Consortium. Figure 2: Evolution of temperature (\({}^{\circ}\)C) of the three strains isolated and their consortium as function of the time at different inoculum doses (4% (**a**), 6% (**b**), and 8% (**c**)), T; negative test. S1: Strain 1; S2: Strain 2; S3: Strain 3; (**d**) C: Consortium. Table 2 depicts the total organic carbon (TOC%) evolution using isolated strains and their consortium. In fact, a significant decrease in TOC was recorded (\(p<0.05\)) towards the end for the three strains and their consortium depending on different inoculum doses (4%, 6%, and 8%). The decrease in TOC was together with the increase in bacterial growth, which confirms the capacity of these strains to degrade carbonaceous compounds during their growth [20; 22].