1. 1 M iss Souhaila Trabelsi Souissi Plasma chemical oxidation of phthalic anhydride: Application to the treatment of Tunisian landfill leachate L C E A C L C Directed by: Nihal Oturan (UPEMLV) Nizar Bellakhal (INSAT) Mehmet.A Oturan (UPEMLV)

2. 2 Advanced Oxydation Process Phtalates Plan Introduction 1 2 3 Gliding arc plasma 4 Experimental study 5 6 Conclusion

3. 3 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion The increase of industrial and agricultural activities in developing countries The use of high varieties of synthetic chemicals 80% of the diseases are directly associated with polluted water. Synthtic chemicals are considered toxic when they are present in aquatic environment

4. 4 1,2-dicarboxylic benzene acids + Alcohol ↔ Phtalates + water They are essentially used as plasticizers to increase the flexibility and durability of polyvinyl chloride Several industrial plants produce large amounts of wastewater containing high concentration of phthalates (COT = 6400,88 mg L -1 ). Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion The need to develop an effective, ecological and economical treatment processes becomes obvious

5. 5 Removal of PhthalatesBiological Process Insuffisent Advanced Oxidation Process (AOP) In situ generation of hydroxyl radical :. OH (E° OH. /H 2 O =2,8 V/ENH) Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion

6. 6 Advanced Oxidtion Process Chemical Photochemical Electrochimical. OH + Pollutants CO 2 + H 2 O + mineral ions Minéralization Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion

7. 7 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion Gliding arc discharge « Glidarc » (ions, photons, electrons, molecules, radicals)

8. 8 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion Chemical properties of Glidarc

9. 9 The Gliding arc plasma depends on several factors Phthalic anhydride The catalyst initial concentration The nature of catalyst Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion

10. 10 Effect of the Fe 2+ initial concentration [Fe 3+ ] 0 : 0 mM (♦); 0,1 mM (◊); 0,2 mM (▲), 0.5 mM ( □ ), 1 mM (■) [ phthalic anhydride]0 = 0,05 mM, V = 200 mL, Ф = 650 L h -1, d = 2,5 cm. Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion Fe 2+ +. OH → Fe 3+ + OH -

11. 11 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion Effect of the Fe 3+ initial concentration [Fe 3+ ] 0 : 0 mM (♦); 0,1 mM (◊); 0,2 mM (▲), 0.5 mM ( □ ), 1 mM (■) [ phthalic anhydride] 0 = 0,05 mM, V = 200 mL, Ф = 650 L h -1, d = 2,5 cm. Fe 3+ + H 2 O 2 ↔ Fe–OOH 2+ + H + Fe–OOH 2+ → HO 2. + Fe 2+

12. 12 Plasmachemical treatment with TiO 2 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion [TiO 2 ] 0 en g.L -1 : 0 (♦); 1 (◊); 2 ( □ ); 3 ( ■ ); 4 ( ▲ ) [phthalic anhydride] 0 = 0,05 mM, V = 200 mL,Ф = 650 L h -1, d = 2,5 cm.

13. 13 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion [Fe2+] = 0,5 mM (x); [Fe3+] = 0,5 Mm (Δ); [TiO2] = 2 g.L-1 (●) [phthalic anhydride] 0 = 0,05 mM, V = 200 mL,Ф = 650 L h -1, d = 2,5 cm. Study of the efficiency of catalysts

14. 14 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion parametersvalue COD 0 (mg/L)10200 pH8.15 Conductivity (mS.cm -2 ) 39.7 à 22.8°C [Fe] (mmol/L)0.135 Characteristics of Tunisian landfill leachate

15. 15 Plasmacatalysis depollution of landfill leachate with TiO 2 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion [TiO 2 ] en g L -1 : 0 (●); 10 ( Δ ); 15 (■); 25 (□) and 35 (♦). [phthalic anhydride] 0 = 0,05 mM, V = 200 mL, Ф = 650 L.h -1, d = 2,5 cm.

16. 16 Plasmacatalysis depollution of landfill leachate under optimum conditions Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion [phthalic anhydride]0 = 0,05 mM, [TiO 2 ] 0 = 15 g.L -1, V = 200 mL, Ф = 650 L.h -1, d = 2,5 cm. Oxidation rate: 51 %

17. 17 Gliding arc dischargeOxidation rate = 75 % Effeciency of this method in removing phthalates from Tunisian landfill leachate: Oxidation rate = 51%. The disadvantage of this technique is the electrical energy consumed. Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion

18. 18 Phtalates Introduction AOP Experimental study Gliding arc plasma Conclusion Thanks for your attention