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Multifunctional System for Treatment of Wastewaters from Adhesive‐Producing Industries: Separation of Solids and Oxidation of Dissolved Pollutants Using Doted Microfiltration Membranes

Multifunctional System for Treatment of Wastewaters from Adhesive‐Producing Industries:... Chemie Ingenieur Technik (73) 6 I 2001 764 I S M R 2 Figure. Fused chemical reaction systems to control the temperature profile in tubular reactors. Multifunctional System for Treatment of Wastewaters from Adhesive-Pro- ducing Industries: Separation of Solids and Oxidation of Dissolved Pollutants Using Doted Microfiltration Membranes J . K l e i n e K . - V . P e i n e m a n n C . S c h u s t e r H . - J . W a r n e c k e 1 2 University of Paderborn, GKSS Research Centre Geesthacht A two-step process has been developed for the clarification of the polymeric coating, the inlet concentrations of the reactants and highly polluted waste waters from adhesive producing plants. First the suspended solids which reach up to 10 % of the mass stream are the encapsulated acid-catalyst, and the reactive slug length. precipitated, flocculated and separated by means of a decanting centrifuge and flotation. To eliminate the remaining dissolved or- ganic compounds the semiconductor catalyst titanium dioxide is immobilized in organic microfiltration membranes and activated by UV-A light. The organic pollutants are oxidized by in situ pro- An Investigation of Catalytic Plate duced hydroxyl radicals or directly by the catalyst. The membrane Reactors by Means of Parametric causes a convective flow of the pollutant towards the catalyst. The separation properties of the membrane can be used in a multifunc- Sensitivity Analysis tional way to extract remaining solid particles from the first process M . Z a n f i r step. A module containing membranes and a UV light source is A . G a v r i i l i d i s developed and applied on the waste waters. University College London, Great Britain A Catalytic Plate Reactor (CPR) consisting of closely spaced cata- lytically coated plates, where endothermic and exothermic reac- tions take place in alternate channels is studied. The influence of several design parameters on its thermal behaviour and perfor- mance is investigated by parametric sensitivity analysis. Para- Phenol Wastewater Treatment by a meters considered are: channel and wall size, wall thermal conduc- Two-Step Adsorption-Oxidation tivity; inlet temperature, composition and velocities; and kinetic Process on Activated Carbon parameters. It is demonstrated that different catalysts can show similar thermal behaviour and performance but exhibit different I . P O L A E R T sensitivity behaviour. For the system investigated the strongest in- A . M . W I L H E L M fluence on reactor sensitivity comes from the activation energies of H . D E L M A S * both exothermic and endothermic reactions. LGC- Laboratoire de Genie Chimique, UMR-CNRS 5503, 18 chemin de la loge, 31078 Toulouse Cedex, France. *Author to whom correspondence should be addressed. (Henri.Delmas@ensigct.fr) The industrial potential of a two-step adsorption-oxidation process for treatment of aqueous phenolic effluents has been investigated. This process is based on the use of activated carbon as adsorbent in the first step and as oxidation catalyst in the second step, in a single bi-functional reactor. Calculations and design were performed based on the experimental results obtained separately for the ad- sorption and the oxidation steps. This two-step adsorption-oxida- tion process appears to be particularly attractive for treating dilute phenolic effluents even though its industrial interest is still demon- strated for highly concentrated wastewater. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemie-Ingenieur-Technik (Cit) Wiley

Multifunctional System for Treatment of Wastewaters from Adhesive‐Producing Industries: Separation of Solids and Oxidation of Dissolved Pollutants Using Doted Microfiltration Membranes

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References (9)

Publisher
Wiley
Copyright
Copyright © 2001 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0009-286X
eISSN
1522-2640
DOI
10.1002/1522-2640(200106)73:6<764::AID-CITE7642222>3.0.CO;2-8
Publisher site
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Abstract

Chemie Ingenieur Technik (73) 6 I 2001 764 I S M R 2 Figure. Fused chemical reaction systems to control the temperature profile in tubular reactors. Multifunctional System for Treatment of Wastewaters from Adhesive-Pro- ducing Industries: Separation of Solids and Oxidation of Dissolved Pollutants Using Doted Microfiltration Membranes J . K l e i n e K . - V . P e i n e m a n n C . S c h u s t e r H . - J . W a r n e c k e 1 2 University of Paderborn, GKSS Research Centre Geesthacht A two-step process has been developed for the clarification of the polymeric coating, the inlet concentrations of the reactants and highly polluted waste waters from adhesive producing plants. First the suspended solids which reach up to 10 % of the mass stream are the encapsulated acid-catalyst, and the reactive slug length. precipitated, flocculated and separated by means of a decanting centrifuge and flotation. To eliminate the remaining dissolved or- ganic compounds the semiconductor catalyst titanium dioxide is immobilized in organic microfiltration membranes and activated by UV-A light. The organic pollutants are oxidized by in situ pro- An Investigation of Catalytic Plate duced hydroxyl radicals or directly by the catalyst. The membrane Reactors by Means of Parametric causes a convective flow of the pollutant towards the catalyst. The separation properties of the membrane can be used in a multifunc- Sensitivity Analysis tional way to extract remaining solid particles from the first process M . Z a n f i r step. A module containing membranes and a UV light source is A . G a v r i i l i d i s developed and applied on the waste waters. University College London, Great Britain A Catalytic Plate Reactor (CPR) consisting of closely spaced cata- lytically coated plates, where endothermic and exothermic reac- tions take place in alternate channels is studied. The influence of several design parameters on its thermal behaviour and perfor- mance is investigated by parametric sensitivity analysis. Para- Phenol Wastewater Treatment by a meters considered are: channel and wall size, wall thermal conduc- Two-Step Adsorption-Oxidation tivity; inlet temperature, composition and velocities; and kinetic Process on Activated Carbon parameters. It is demonstrated that different catalysts can show similar thermal behaviour and performance but exhibit different I . P O L A E R T sensitivity behaviour. For the system investigated the strongest in- A . M . W I L H E L M fluence on reactor sensitivity comes from the activation energies of H . D E L M A S * both exothermic and endothermic reactions. LGC- Laboratoire de Genie Chimique, UMR-CNRS 5503, 18 chemin de la loge, 31078 Toulouse Cedex, France. *Author to whom correspondence should be addressed. (Henri.Delmas@ensigct.fr) The industrial potential of a two-step adsorption-oxidation process for treatment of aqueous phenolic effluents has been investigated. This process is based on the use of activated carbon as adsorbent in the first step and as oxidation catalyst in the second step, in a single bi-functional reactor. Calculations and design were performed based on the experimental results obtained separately for the ad- sorption and the oxidation steps. This two-step adsorption-oxida- tion process appears to be particularly attractive for treating dilute phenolic effluents even though its industrial interest is still demon- strated for highly concentrated wastewater.

Journal

Chemie-Ingenieur-Technik (Cit) – Wiley

Published: Jun 1, 2001

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