Browse > Article

An Energy Characteristics of Carbonization Residue produced from Sewage Sludge Cake  

Rhee, Seung-Whee (Department of Environmental Engineering, Kyonggi University)
Publication Information
Korean Chemical Engineering Research / v.47, no.2, 2009 , pp. 230-236 More about this Journal
Abstract
Sewage sludge cake(SSC) is seriously concerned because ocean dumping, which is the cheapest treatment method now, will be banned in 2012. On the basis of this reason, recycling of SSC is emphasized to convert the treatment method. One of the method to recycling SSC could be carbonization process which also can be reduced greenhouse gas effectively. And carbonization residue of SSC produced by carbonization process can become a renewable energy source. However, carbonization process has not been evaluated by considering basic operating data such as heating value, yield and fuel ratio. In this study, the basic characteristics of SSC such as proximate analysis, elementary analysis and heating value are analyzed. In carbonization process, the effect of carbonization temperature and time on the residue of SSC are estimated. And the analysis is carried out to obtain basic properties of the residue of SSC. From the result of chemical composition of SSC residue, there is 27% of phosphate in SSC. Phosphate will take a role of reductant to convert from hazardous substance to non-hazardous material. As increased carbonization temperature and time, heating value and yield are decreased but fuel ratio(fixed carbon/volatile combustible) of the residue is increased. In the carbonization process, the optimum temperature and time in carbonization test for SSC can be decided by $250^{\circ}C$ and 15 min, respectively. However, the carbonization residue of SSC can not be deserved to use one of renewable energy sources because the heating value at the optimum condition is relatively low. Hence, it is desirable that SSC can be mixed with other organic waste to carbonize.
Keywords
Carbonization; Sewage Sludge Cake; Heating Value; Fuel Ratio; Renewable Energy;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
연도 인용수 순위
1 Najla, G., Kamel, H., Andre, Z. and Foued, H., 'Experimental Study of Thermal Effect on Olive Wood Pore Structure During Carbonization,' Maderas Ciencia Tecnologia, 9(1), 15-28(2007)
2 Lee, H. Y. and Kim, Y. J., 'Characteristics and Utilization of Carbonization Residue Prodeced from Sewage Sludge,' 24(7), 581-590 (2007)
3 Ministry of Environment: A National Plan on Sewage Sludge Management(2007)
4 McMurry, John., Organic Chemistry, Thomson-Brooks/Cole(1992)
5 Rhee, S. W. and Cho, Y. H., 'A Study on Characteristics of Carbonization Residue Produced from Woody Biomass,' J. Korea Society of Waste Management, 25(6), 533-539(2008)
6 Lee, O. K., Jo, T. S. and Choi, J. W., 'Changes in Properties and Surface FT-IR Spectra of Wood Charcoal at Different Carbonization Temperatures,' Wood Science and Technology, 35(4), 21-28 (2007)
7 The Merck Index, 12th Ed., Merck & Co., Inc., Whitehouse Station(1996)
8 Park, S. W., 'Carbonization Technology for Recycling Wastes as Fuel,' J. Korea Society of Waste Management, 22(3), 226-235(2005)
9 Su, C. I. and Wang, C. L., "Optimum Manufacturing Conditions of Activated Carbon Fiber Absorbents. II. Effect of Carbonization and Activation Conditions," Fibers and Polymers, 8(5), 482-486(2007)   DOI   ScienceOn
10 Hwang, B. H., Woodbiomass, Sunjin, 45-50, 70-87(1998)
11 Ministry of Environment: A Current Status of National Waste Generation and Treatment 2006(2007)
12 Kazuhiro, M., Lloyd, S. P. and Michael, A. A. J., 'Flash Carbonization of Biomass,' AIChE Annual Meeting, Indianapolis, Nov., IN(2002)
13 Park, S. W., Jang, C. H. and Kim, S. S., 'Study on Adsorption Property of Sewage Sludge after Carbonization,' J. Korea Society of Waste Management, 19(4), 418-425(2002)
14 Ministry of Environment: A National Plan on Waste Management 2nd Edition(2002)
15 Lee, H. S., Lee, J. Y., Bae, S. K., Kang, S. H. and Yoon, O. S., 'Renewable Energy of Organic Wastes by Carbonization,' J. Korea Society of Waste Management, 11(1), 31-33(2006)
16 Mun, S. P., Ku, C. S. and Park, S. B., 'Physicochemical Characterization of Pyrolyzates Produced from Carbonization of Lignocellulosic Biomass in a Batch-type Mechanical Kiln,' Journal of Industrual and Engineering Chemistry, 13(1), 127-132(2007)
17 Park, N. S., "A Study on the Physico-Chemical and Adsorption Characteristic of Carbonized Sludge," Graduate School of Industy, University of Incheon(2007)
18 Jung, D. H., Song, J. S., Lee, J. H. and Chun, Y. N., 'The Study on the Optimum Carbonized Characteristics for Preparation of Absorbent with Sewage Sludge,' J. Korea Society of Waste Management, 24(5), 448-453(2007)