RESULTS

  • In the first stage of the project a treatment technology was designed by using mathematical modeling of the statistical data from an experimental program generated by a central, rotatable second order compound program based on a matrix with 13 experiments and two independent variables. For each treatment variant, an experimental program of 13 experiments was run, to which 2 separate experiments (control sample and classical alkaline treatment) were added. This program was repeated once (for minor deviations), respectively 2 times when large deviations were recorded. The total number of experimental variants projected was 17. The total of experiments designed = 17 * 15 = 255. Total experiments performed = 255 * 2 = 510 to which 45 experiments were repeated 3 times.

 

  • An optimal enzyme treatment technology has been achieved by correlating all the properties of the materials treated with the physico-chemical characteristics of the waste water resulted from de processes.

 

  • In the second stage, the optimal enzyme treatment technology was applied on all the textile material supports, respecting the same experimental program applied at the laboratory scale.

 

  • The correlation between a laborious method of determining Ca2 + on fabric treated with a method accessible to the industrial environment was made.

 

  • The possibility of replacing the EDTA complexing agent (non-degradable) with sodium citrate (biodegradable) for this technology has been proven.

 

  • The efficiency of ultrasound utilization has been proven to accelerate industrial enzymatic processes.

 

  • It has been shown that the buffer solution used for enzymatic treatments for which the pH is slightly alkaline can be substituted with softened water without significant modifications in the properties of the obtained materials.

 

  • Many investigation techniques were used such as: X-ray diffraction, optical microscopy, SEM, UV-Vis, thermal analysis, FT-IR spectroscopy, atomic absorption spectrometry, etc.

 

  • The originality and innovation elements that have been proposed to demonstrate synergistic effects between ultrasound – enzymes and auxiliaries have been achieved.

 

  • The economic and environmental impacts have been demonstrated and the proposed new technology is environmentally friendly with industrial applicability.

 

  • The proposed objectives have been achieved.