## 3 Results and Discussion
### Molecular Identification of Isolated Strains
These findings could explain the results obtained by _A. xylosoxidants_ regarding the decrease in TOC, and therefore, C/N ratio. The ability of _Achromobacter_ to degrade the lignocellulosic compounds in solid waste is identified by several authors that worked on household waste discharged in landfills as well as in paper waste [28; 30]. Indeed, [PERSON] et al. [31] identified _S. liquefaciens_ as a ligninolytic strain, which is due to their ability to degrade lignin from solid waste and based on its detoxification and reduction of pollutants activity, as well as the azo dyes containing in paper waste, which is the case for the present study. In fact, the abundance of textile waste, paper and cardboard waste, and green waste in ligno-cellulosic compounds and azo dyes, which is confirmed beforehand [14; 21], allows to induce lignin peroxidase enzymes (LiP) in _S. liquefaciens_. [PERSON] et al. [14] depicted using FTIR and XRD analysis, which the intensities of pics attributed to lignin, carbohydrates, hemicelluloses, and/or cellulosic in compost samples appeared, thus proving the decaying of polysaccharides, aliphatic, and carbohydrates from the compost samples, which could be a good indication of compost stability and maturity. These findings could explain the high effectiveness of _S. liquefaciens_ in the degradation of the organic matter represented by TOC, TKN, and C/N compared to the other strains tested, equally to their effect on the time of composting, which is significantly much less than that during classical composting. It can be noted that the use of _S. liquefaciens_ allows the dyes present in textile waste to decay. Nevertheless, when a consortium of isolates was used, the organic matter degradation was considerably more intense, relative, and swift compared to the use of these isolates separately, which could be due to their ability to coexist with each other. The results recorded during this investigation could be explained by the fact that different metabolism pathways of the bacteria within this consortium are involved to degrade organic matter [10]. Several studies indicate that there might be a synergistic cooperation between bio-augmented bacterial species into consortia, which has strengthening their ability to accelerate the conversion of organic matter, especially recalcitrant substances [10; 20]. These findings are consistent with the results obtained in this investigation. Other studies deduced that recalcitrant compounds, such as lingo-cellulosic, are degraded by microbial consortia in which each strain has specialized roles: some of them attack the complex substrate, others provide essential nutrients [32; 33]. [PERSON] et al. and [PERSON] et al. [28; 34] have demonstrated that _S. liquefaciens_ and _A. xylosoxidants_ could fulfill the role of a degrading agent for lignocellulosic compounds owing to their enzyme system. Indeed, [35] investigated that _Streptomyces cellulose_ have the ability to use cellulose and other lignin byproducts as a source of carbon and energy. Ultimately, as demonstrated during this study, the bioaugmentation could be a useful tool to improve the performance of composting process and the quality of final compost either with industrials wastes, which is the case in the present study or even with other kind of wastes, which has been confirmed previously by several authors [5; 7; 11]. For this reason, the choice of microorganisms is crucial, and should be based on the nature of waste used, particularly their composition.