1 / 14

Student: Marlene Barrera Ventura Supervisor: Dolors Salvatierra

Univers itat Rovira i Virgili. Kinetic study of organic wastes degradation in supercritical water. Student: Marlene Barrera Ventura Supervisor: Dolors Salvatierra. Kinetic study of organic wastes de gradation in supercritical water. Contents. Problem description

masao
Download Presentation

Student: Marlene Barrera Ventura Supervisor: Dolors Salvatierra

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Universitat Rovira i Virgili Kinetic study of organic wastesdegradation in supercritical water Student: Marlene Barrera Ventura Supervisor: Dolors Salvatierra

  2. Kinetic study of organic wastes degradation in supercritical water Contents • Problem description • Theory aboutSupercritical Water Oxidation (SCWO) • Objective and Workplan • Test assembly • Research perspectives

  3. Kinetic study of organic wastes degradation in supercritical water Problem Plastic containers of phytosanitary products Agricultural activities Wastewaters Recycling process Plastics It is necessary... Optimize the wastewater treatment processes

  4. Kinetic study of organic wastes degradation in supercritical water Theory • Activated carbon treatments • Incineration • Wet oxidation • Supercritical water oxidation (SCWO) Some wastewater treatment processes: • The reactivity of the supercritical water • system is consequence of: • Its low viscosity • Its high diffusivity • The water has the behavior of • a polar dissolvent, then is able of • dissolve the oxygen and organic • compounds (single phase) Critical point: T=374C P=221 atm Water

  5. Kinetic study of organic wastes degradation in supercritical water Supercritical Water Oxidation CO2 Wastewaters + REACTOR + H2O + Oxidant Others at supercritical conditions short reaction times Destruction efficiences > 99.99%

  6. Kinetic study of organic wastes degradation in supercritical water Objective and workplan General Objective: Kinetic study for the oxidation of organic model molecules in water under supercritical conditions in a batch system

  7. DEA Kinetic study of organic wastes degradation in supercritical water Workplan Bibliographic search about Supercritical Water Oxidation To define kinetic models To prepare the test assembly To establish the detection method of the gas chromatograph To analyse results To do experiments with each model molecule

  8. Kinetic study of organic wastes degradation in supercritical water Things to do in order to reach the general objective: • To do experiments at • different temperatures • and reaction times • To analyse results • To define kinetic models

  9. T Temperature control Security purge REACTOR Exit of reaction products Tank Pump Cold bath Six way valve Kinetic study of organic wastes degradation in supercritical water Test assembly N2

  10. Kinetic study of organic wastes degradation in supercritical water Test assembly Reaction System: REACTOR SIX WAY VALVE LOAD INJECTION ENTRANCE 10 cm Tank Exit of reaction products

  11. Kinetic study of organic wastes degradation in supercritical water Test assembly Gas chromatograph:

  12. . . . . . . . . . . . . . . . . . . . . Kinetic study of organic wastes degradation in supercritical water Kinetic Study if reaction is first order at constant T . . -ln CA/CA0 ln k slope = k slope = -E/R . k=A*exp(-E/RT) t 1/T

  13. Kinetic study of organic wastes degradation in supercritical water Research perspectives Supercritical Water Oxidation: BibliographicSearch To design and to construct the continuous system To do experiments in the continuous system with the model molecules To prepare the test assembly DEA To establish the detection method of the gas chromatograph To define kinetic models Comparison between batch process - continuous process To do experiments with each model molecules To do experiments and to define models with mixtures To analyse results Economic Evaluation

  14. Kinetic study of organic wastes degradation in supercritical water Thank you for your attention!!!

More Related