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Use of Continuously Stirred Flow Systems For Laboratory Investigation of Wastewater Treatability With Activated Carbon BRUCE A. BELL, Associate Flood & Associates, Inc. Jacksonville, Florida 32211 ALAN H. MOLOF, Associate Professor Polytechnic Institute of New York Brooklyn, New York 11201 INTRODUCTION Increases in economic, population and industrial growth have led to the need for greater quantities of clean water than are readily available in many areas. At the same time, the ability of receiving waters to tolerate the pollutional loads of wastewaters is limited. Thus, more and more stringent pretreatment and discharge standards are being imposed on industry. Activated carbon adsorption is coming into more general use in both industrial and municipal water and wastewater treatment to remove biorefractory or toxic materials. While general data exists as to the applicability of carbon adsorption to certain classes of wastewater, specific designs are generally carried out utilizing laboratory and pilot testing (I). While the value of pilot and laboratory testing is obvious in light of the expensive investment required in carbon systems, conventional laboratory testing is both expensive and time consuming. The necessity of running carbon columns a sufficient length of time to achieve carbon loadings equivalent to those expected in full scale plants makes such testing tedious. In addition, none of the conventional methods of testing address themselves to the kinetics of adsorption. To overcome these limitations, a laboratory technique was developed utilizing continuously stirred flow reactors to investigate the effect of various parameters on the kinetics of adsorption as well as capacity considerations. During the research a model of the kinetics of adsorption was developed. THEORETICAL CONSIDERATIONS The existing models of adsorption of material from solution onto porous adsorbents, such as activated carbon, have not been totally successful in describing the behavior of such systems. The existing models range from the most common three step model of external, or film, diffusion, intraparticle, or pore, diffusion, followed by adsorption, to multistep models. All of the models proposed to date consider physical adsorption to be a single 107
Object Description
Purdue Identification Number | ETRIWC1975009 |
Title | Use of continuously stirred flow systems for laboratory investigation of wastewater treatability with activated carbon |
Author |
Bell, Bruce A. Molof, Alan H. |
Date of Original | 1975 |
Conference Title | Proceedings of the 30th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,25691 |
Extent of Original | p. 107-113 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital object copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Date Digitized | 2009-06-25 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page107 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital object copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Transcript | Use of Continuously Stirred Flow Systems For Laboratory Investigation of Wastewater Treatability With Activated Carbon BRUCE A. BELL, Associate Flood & Associates, Inc. Jacksonville, Florida 32211 ALAN H. MOLOF, Associate Professor Polytechnic Institute of New York Brooklyn, New York 11201 INTRODUCTION Increases in economic, population and industrial growth have led to the need for greater quantities of clean water than are readily available in many areas. At the same time, the ability of receiving waters to tolerate the pollutional loads of wastewaters is limited. Thus, more and more stringent pretreatment and discharge standards are being imposed on industry. Activated carbon adsorption is coming into more general use in both industrial and municipal water and wastewater treatment to remove biorefractory or toxic materials. While general data exists as to the applicability of carbon adsorption to certain classes of wastewater, specific designs are generally carried out utilizing laboratory and pilot testing (I). While the value of pilot and laboratory testing is obvious in light of the expensive investment required in carbon systems, conventional laboratory testing is both expensive and time consuming. The necessity of running carbon columns a sufficient length of time to achieve carbon loadings equivalent to those expected in full scale plants makes such testing tedious. In addition, none of the conventional methods of testing address themselves to the kinetics of adsorption. To overcome these limitations, a laboratory technique was developed utilizing continuously stirred flow reactors to investigate the effect of various parameters on the kinetics of adsorption as well as capacity considerations. During the research a model of the kinetics of adsorption was developed. THEORETICAL CONSIDERATIONS The existing models of adsorption of material from solution onto porous adsorbents, such as activated carbon, have not been totally successful in describing the behavior of such systems. The existing models range from the most common three step model of external, or film, diffusion, intraparticle, or pore, diffusion, followed by adsorption, to multistep models. All of the models proposed to date consider physical adsorption to be a single 107 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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