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Evaluation of Granular Activated Carbon Process Focusing on Molar mass and size distribution of DOM  

Chae, Seon H. (한국수자원공사 수자원연구원)
Lee, Kyung H . (한국수자원공사 수자원연구원)
Publication Information
Journal of Korean Society of Water and Wastewater / v.22, no.1, 2008 , pp. 31-38 More about this Journal
Abstract
The primary objective of this study was to evaluate the variation of the molecular size distribution by granular activated carbon (GAC) adsorption. GAC adsorption was assessed by using the rapid small-scale column test (RSSCT) and high-performance size-exclusion chromatography (HPSEC) was used to analyze the molecular size distribution (MSD) in the effluent of GAC column. RSSCT study suggested that GAC adsorption exhibited excellent interrelationship between dissolved organic carbon (DOC) breakthrough and MSD as function of bed volumes passed. After GAC treatment, the nonadsorbable fraction which was about 25percents of influent DOC corresponded to the hydrophilic (HPI) natural organic carbon (NOM) of NOM fractions and was composed entirely of <300 molecular weight (MW) in the HPSEC at the initial stage of the RSSCT operation. The dominant MW fraction in the source water was 1,000~5,000daltons. At the bed volumes 2,500, MW <500 of GAC treated water was risen rather than it of source water. After the bed volumes 7,300 of operation, the MW 1,000~3,000 fraction was closed to about 80percents of DOC found in the GAC influent. The Number-average molecular weight (Mn) value determined using HPSEC for the effluent of GAC column was gently increased as DOC breakthrough progress. The quotient p(Mw/Mn) can be used to estimate the degree of polydispersity was shown greatest value for the GAC effluent at the initial stage of the RSSCT operation.
Keywords
Granular activated carbon (GAC); Molecular weight; Dissolved organic matter(DOM);
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  • Reference
1 Sonthmeir H., Crittenden J. C. and Summers R. S. (1988) Activated Carbon for Water Treatment, second edition, DVGW-Forschungsstelle, Germany
2 Karanfil T. and Kilduff J. E. (1999) Role of Granular Activated Carbon Surface Chemistry on the Adsorption of Organic Compounds, 1. Priority pollutants, Environmental Science and Technology, 33(18), pp. 3217-3224   DOI   ScienceOn
3 Kitis M. (2001) Probing Cholrine Reactivity of Dissolved Organic Matter for Disinfection by-products (DBP) Formation; Relations with Specific Ultraviolet Absorbance(SUVA) and Development of the DBP Reactivity Profile, Ph.D. Dissertation, Clemson University, Clemson, SC
4 Karanfil T., Kitis M., Kilduff J. E. and Wigton A. (1999) Role of Granular Activated Carbon Surface Chemistry on the Adsorption of Organic Compounds, 2. Natural Organic Matter, Environmental Science and Technology, 33(18), pp. 3225-3233   DOI   ScienceOn
5 Weber W. J. Jr., Voice T. C., and Jodelah A. (1983) Adsorption of Humic Substances: The Effects of Heterogeneity and System Characteristics, J. of AWWA, 75(12), pp. 612-619   DOI
6 Summers R. S. and Roberts P. V. (1988) Activated carbon adsorption of humic substance, I. heterodisperse mixtures and desorption, Journal of Colloid and Interface Science, 122, pp. 367-381   DOI   ScienceOn
7 Karanfil T. K., Kilduff J. E., Schlautman M. A. and Weber W. J. (1996) Adsorption of organic macromolecules by granular activated carbon: 1. Influence of molecular properties under anoxic solution conditions, Environmental Science and Technology, 30(7), pp. 2187-2194   DOI   ScienceOn
8 Kilduff J. E. and Wigton A. (1999) Sorption of TCE by Humic-preloaded Activated Carbon: Incorporating Sizeexclusion and Pore Blockage Phenomena in a Competitive Adsorption Model, Environmental Science and Technology, 33(2), pp. 250-256   DOI   ScienceOn
9 Summers R. S., S. Hopper and S. Hong (1996) GAC Precursor Removal Studies, ICR Manual for Bench- and Pilot-Scale Treatment Studies. EPA 814-B-96-003, USEPA, Office of Water
10 Knappe D. R. U., Snoeyink V. L., Roche P., Prados M. J. and Bourbigot M. M. (1997) The Effect of Preloading on Rapid Small-scale Column Test Predictions of Atrazine Removal by GAC Adsorbers, Water research, 31(11), pp. 2899-2909   DOI   ScienceOn
11 Thurman, E. M. and Malcomn, R. L. (1981) Preparative Isolation of Aquatic Humic Substance, Environmental Science and Technology, 15(4), pp. 463-466   DOI   ScienceOn
12 Semmens, M.J., and Staples (1986) The Nature of Organics Removed During Treatment of Mississippi River Water, J. of AWWA, 78(2), pp. 76-81