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Effects of Colloidal Materials and Polyelectrolytes on Carbon Adsorption in Aqueous Solution JU-CHANG HUANG, Associate Professor JACK T. GARRETT, JR., Graduate Student Department of Civil Engineering University of Missouri-Rolla Rolla, Missouri 65401 INTRODUCTION During the last two decades the public's concern over pollution has increased tremendously. Various federal, state and local regulations have been established to govern the degree of treatment required for water and wastewater by industries and municipalities. Stringent quality standards recently advocated for both water supply and treated waste effluent have greatly increased the potential of using activated carbon as a treatment step for water and wastewater. This is because activated carbon has proven to be very effective in adsorbing various organic pollutants that have escaped conventional treatment processes. However, in order to optimize the use of activated carbon, additional research still has to be done in many areas so that a better understanding of the carbon adsorption phenomenon can be obtained. Also, some important factors that may affect the carbon adsorption process must also be evaluated. This study was designed to seek answers to the following two questions concerning activated carbon adsorption: First, what effects do colloidal materials have on the carbon adsorption capacity? Second, what effect does the base material of an activated carbon have on adsorption efficiency while colloidal materials are present? The answer to the first question is important both in determining the suitability of using the carbon adsorption technique as a treatment method, and also in determining the degree of pretreatment, i.e. removal of solids, required prior to the carbon adsorption operation. The answer to the second question is important in selecting a proper type of carbon for each specific application. In this country, activated carbons are generally manufactured from either coal-based or wood-based (lignite-based) materials. There has been some indications that in the presence of large adsorbate molecules the adsorption by wood- or lignite-based activated carbons is more efficient than by coal-based carbons. This difference is probably due to the variations in pore size distributions between the two different carbons (1). From the literature made available by manufacturers and researchers, it is known that the coal-based carbons have most of their adsorption area available in the small micropore capillaries having a diameter range between 6 and 100 A. while the wood- or lignite-base carbons have a substantial fraction of adsorption area available in the relatively large transitional capillaries having a diameter range from 100 to 2,000 A (1. 2, 3). 1111
Object Description
Purdue Identification Number | ETRIWC1975095 |
Title | Effects of colloidal materials and polyelectrolytes on carbon adsorption in aqueous solution |
Author |
Huang, Ju-Chang Garrett, Jack T. |
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. 1111-1121 |
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 | 2009-06-30 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page1111 |
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 | Effects of Colloidal Materials and Polyelectrolytes on Carbon Adsorption in Aqueous Solution JU-CHANG HUANG, Associate Professor JACK T. GARRETT, JR., Graduate Student Department of Civil Engineering University of Missouri-Rolla Rolla, Missouri 65401 INTRODUCTION During the last two decades the public's concern over pollution has increased tremendously. Various federal, state and local regulations have been established to govern the degree of treatment required for water and wastewater by industries and municipalities. Stringent quality standards recently advocated for both water supply and treated waste effluent have greatly increased the potential of using activated carbon as a treatment step for water and wastewater. This is because activated carbon has proven to be very effective in adsorbing various organic pollutants that have escaped conventional treatment processes. However, in order to optimize the use of activated carbon, additional research still has to be done in many areas so that a better understanding of the carbon adsorption phenomenon can be obtained. Also, some important factors that may affect the carbon adsorption process must also be evaluated. This study was designed to seek answers to the following two questions concerning activated carbon adsorption: First, what effects do colloidal materials have on the carbon adsorption capacity? Second, what effect does the base material of an activated carbon have on adsorption efficiency while colloidal materials are present? The answer to the first question is important both in determining the suitability of using the carbon adsorption technique as a treatment method, and also in determining the degree of pretreatment, i.e. removal of solids, required prior to the carbon adsorption operation. The answer to the second question is important in selecting a proper type of carbon for each specific application. In this country, activated carbons are generally manufactured from either coal-based or wood-based (lignite-based) materials. There has been some indications that in the presence of large adsorbate molecules the adsorption by wood- or lignite-based activated carbons is more efficient than by coal-based carbons. This difference is probably due to the variations in pore size distributions between the two different carbons (1). From the literature made available by manufacturers and researchers, it is known that the coal-based carbons have most of their adsorption area available in the small micropore capillaries having a diameter range between 6 and 100 A. while the wood- or lignite-base carbons have a substantial fraction of adsorption area available in the relatively large transitional capillaries having a diameter range from 100 to 2,000 A (1. 2, 3). 1111 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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