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Received April 14, 2013
Accepted December 13, 2013
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Characteristics of pellet-type adsorbents prepared from water treatment sludge and their effect on trimethylamine removal
Department of Chemical Engineering, Kongju National University, Cheonan 330-717, Korea 1School of Environmental Engineering, University of Seoul, Seoul 130-743, Korea
jkjeon@kongju.ac.kr
Korean Journal of Chemical Engineering, April 2014, 31(4), 624-629(6), 10.1007/s11814-013-0272-8
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Abstract
We optimized the preparation method of pellet-type adsorbents based on alum sludge with the aim of developing a high-performance material for the adsorption of gaseous trimethylamine. Effects of calcination temperature on physical and chemical properties of pellet-type adsorbents were investigated. The porous structure and surface characteristics of the adsorbents were studied using N2 adsorption and desorption isotherms, scanning electron microscope, X-ray diffraction, temperature-programmed desorption of ammonia, and infrared spectroscopy of adsorbed pyridine. The adsorbents obtained from the water treatment sludge are microporous materials with well-developed mesoporosity. The pellet-type adsorbent calcined at 500 ℃ had the highest percentage of micropore volume and the smallest average pore diameter. The highest adsorption capacity in trimethylamine removal attained over the pellet-type adsorbent calcined at 500 ℃ can be attributed to the highest number of acid sites as well as the well-developed microporosity.
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Yurdakoc M, Akcay M, Tonbul Y, Yurdakoc K, Turk. J. Chem., 23(3), 319 (1999)
