Accelerated carbonation using municipal solid waste incinerator bottom ash and cold-rolling wastewater: Performance evaluation and reaction kinetics

Journal Article · Tue Sep 15 00:00:00 EDT 2015 · Waste Management

DOI:https://doi.org/10.1016/J.WASMAN.2015.05.001· OSTI ID:22472546

Chang, E-E ^[1]; Pan, Shu-Yuan ^[2]; Yang, Liuhanzi ^[3]; Chen, Yi-Hung ^[4]; Kim, Hyunook ^[5]; Chiang, Pen-Chi ^[2]

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1. Department of Biochemistry, Taipei Medical University, 250 Wu-Hsing Street, Taipei City, Taiwan 110, Taiwan, ROC (China)
2. Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei City, Taiwan 10673, Taiwan, ROC (China)
3. School of Environment, Tsinghua University, Haidin District, Beijing 100084 (China)
4. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei City, Taiwan 10608, Taiwan, ROC (China)
5. Department of Energy and Environmental System Engineering, University of Seoul (Korea, Republic of)

Highlights: • Carbonation was performed using CO{sub 2}, wastewater and bottom ash in a slurry reactor. • A maximum capture capacity of 102 g CO{sub 2} per kg BA was achieved at mild conditions. • A maximum carbonation conversion of MSWI-BA was predicted to be 95% by RSM. • The CO{sub 2} emission from Bali incinerator could be expected to reduce by 6480 ton/y. • The process energy consumption per ton CO{sub 2} captured was estimated to be 180 kW h. - Abstract: Accelerated carbonation of alkaline wastes including municipal solid waste incinerator bottom ash (MSWI-BA) and the cold-rolling wastewater (CRW) was investigated for carbon dioxide (CO{sub 2}) fixation under different operating conditions, i.e., reaction time, CO{sub 2} concentration, liquid-to-solid ratio, particle size, and CO{sub 2} flow rate. The MSWI-BA before and after carbonation process were analyzed by the thermogravimetry and differential scanning calorimetry, X-ray diffraction, and scanning electron microscopy equipped with energy dispersive X-ray spectroscopy. The MSWI-BA exhibits a high carbonation conversion of 90.7%, corresponding to a CO{sub 2} fixation capacity of 102 g per kg of ash. Meanwhile, the carbonation kinetics was evaluated by the shrinking core model. In addition, the effect of different operating parameters on carbonation conversion of MSWI-BA was statistically evaluated by response surface methodology (RSM) using experimental data to predict the maximum carbonation conversion. Furthermore, the amount of CO{sub 2} reduction and energy consumption for operating the proposed process in refuse incinerator were estimated. Capsule abstract: CO{sub 2} fixation process by alkaline wastes including bottom ash and cold-rolling wastewater was developed, which should be a viable method due to high conversion.

• OSTI ID: 22472546
• Journal Information: Waste Management, Vol. 43; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ASHES
CALORIMETRY
CARBON DIOXIDE
CARBON FOOTPRINT
CARBONIZATION
ENERGY CONSUMPTION
EXPERIMENTAL DATA
FLOW RATE
PARTICLE SIZE
PERFORMANCE
REACTION KINETICS
SCANNING ELECTRON MICROSCOPY
SLURRY REACTORS
SOLID WASTES
THERMAL GRAVIMETRIC ANALYSIS
WASTE WATER
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY