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Received April 20, 2013
Accepted May 27, 2013
Available online June 3, 2013
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정수장 슬러지로부터 제조한 입상흡착제의 염기성 가스 흡착 성능
Adsorption Performance of Basic Gas over Pellet-type Adsorbents Prepared from Water Treatment Sludge
공주대학교 화학공학부, 331-717 충남 천안시 서북구 부대동 275 1서울시립대학교 환경공학부, 130-743 서울 동대문구 전농동 90
Department of Chemical Engineering, Kongju National University, 275 Budae-dong, Seobuk-gu, Cheonan, Chungnam 331-717, Korea 1School of Environmental Engineering, Graduate School of Energy and Environmental System Engineering, University of Seoul, 90 Jheonnong-dong, Dongdaemun-gu, Seoul 130-743, Korea
jkjeon@kongju.ac.kr
Korean Chemical Engineering Research, June 2013, 51(3), 352-357(6)
https://doi.org/10.9713/kcer.2013.51.3.352
https://doi.org/10.9713/kcer.2013.51.3.352
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Abstract
본 연구에서는 정수장 슬러지를 사용하여 제조한 정수슬러지 가공 분말의 압출공정을 통해서 입상흡착제를 제조하였다. 바인더 첨가와 소성과정이 입상형 흡착제의 물리·화학적 특성에 미치는 영향을 질소흡착, 압축강도, 주사전자현미경, 엑스선회절, 피리딘흡착 적외선분광법 등으로 분석하였다. 바인더의 함량을 5 wt%까지 증가시키면 압축강도가 3배 이상으로 개선되었으나 트리메틸아민을 흡착할 수 있는 표면적이 30% 정도 감소하여 입상흡착제의 트리메틸아민 파과시간이 단축되었다. 성형된 입상흡착제의 소성과정을 통해서 표면에 브뢴스테드산점과 루이스산점으로 구성된 산점이 발현되어, 염기성 기체인 트리메틸아민의 파과 시간이 3배 이상으로 증가하였다.
In this study, the pellet-type adsorbents were prepared by extrusion using water treatment sludge. Effects of binder and calcination on physical and chemical properties of pellet-type adsorbents were investigated. The porous structure and surface characteristics of the adsorbents were studied using nitrogen adsorption, compression strength, scanning electron microscope, X-ray diffraction, and infrared spectroscopy of adsorbed pyridine. With increasing of binder content to 5 wt%, the compressive strength of pellet-type adsorbent could be improved more than three times, but the surface area reduced by 30%, and thus the breakthrough time of trimethylamine was shortened. The breakthrough time of the trimethylamine, a basic gas, could be increased more than three times through calcination, which seems to be due to generation of acid sites composed of Lewis acid and Bronsted acid sites on the adsorbent surface.
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Seredych M, Strydom C, Bandosz TJ, Waste Manage., 28, 1983 (2008)
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Pan ZH, Tian JY, Xu GR, Li JJ, Li GB, Water Res., 45, 819 (2011)
Yuan WX, Bandosz TJ, Fuel, 86(17-18), 2736 (2007)
Xu GR, Zhang WT, Li GB, Water Res., 39, 5175 (2005)
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Rouquerol J, Avnir D, Fairbridge CW,, Everet DH, Haynes JH, Pernicone N, Ramsay J, Sing KS, Unger KK, Pure Appl. Chem., 66, 1739 (1994)
Lim JW, Choi Y, Yoon HS, Park YK, Yim JH, Jeon JK, J. Ind. Eng. Chem., 16(1), 51 (2010)
Yurdakoc M, Akcay M, Tonbul Y, Yurdakoc K, Turk. J. Chem., 23(3), 319 (1999)
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Zaki MI, Hasan MA, Al-Sagheer FA, Pasupulety L, Colloids Surf. A: Physicochem. Eng. Aspects., 190, 261 (2001)
