title: Accelerated carbonation using municipal solid waste incinerator bottom ash and cold-rolling wastewater: Performance evaluation and reaction kinetics.
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 (CO2) fixation under different operating conditions, i.e., reaction time, CO2 concentration, liquid-to-solid ratio, particle size, and CO2 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 CO2 fixation capacity of 102g perkg 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 CO2 reduction and energy consumption for operating the proposed process in refuse incinerator were estimated. Capsule abstract: CO2 fixation process by alkaline wastes including bottom ash and cold-rolling wastewater was developed, which should be a viable method due to high conversion.
authors.affiliation: Department of Biochemistry, Taipei Medical University, 250 Wu-Hsing Street, Taipei City, Taiwan 110, Taiwan, ROC.
authors.forename: E-E
authors.initials: EE
authors.lastname: Chang
authors.affiliation: Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei City, Taiwan 10673, Taiwan, ROC.
authors.forename: Shu-Yuan
authors.initials: SY
authors.lastname: Pan
authors.affiliation: School of Environment, Tsinghua University, Haidin District, Beijing 100084, China.
authors.forename: Liuhanzi
authors.initials: L
authors.lastname: Yang
authors.affiliation: Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei City, Taiwan 10608, Taiwan, ROC.
authors.forename: Yi-Hung
authors.initials: YH
authors.lastname: Chen
authors.affiliation: Department of Energy and Environmental System Engineering, University of Seoul, Republic of Korea.
authors.forename: Hyunook
authors.initials: H
authors.lastname: Kim
authors.affiliation: Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei City, Taiwan 10673, Taiwan, ROC. Electronic address: pcchiang@ntu.edu.tw.
authors.forename: Pen-Chi
authors.initials: PC
authors.lastname: Chiang
mesh_terms: D002244:Carbon / Q000737:chemistry; D002245:Carbon Dioxide / Q000737:chemistry*; D002254:Carbonates / Q000737:chemistry; D060729:Coal Ash / Q000737:chemistry*; D017745:Incineration / Q000191:economics / Q000295:instrumentation / Q000379:methods*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D013818:Thermogravimetry; D062065:Wastewater / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002244:Carbon; D002245:Carbon Dioxide; D002254:Carbonates; D060729:Coal Ash; D062065:Wastewater
keywords: Alkaline wastes; CO(2); Energy consumption; Mineralization; Operating cost; Shrinking core model