title: Investigation on thermal and trace element characteristics during co-combustion biomass with coal gangue.
abstract: The thermochemical behaviors during co-combustion of coal gangue (CG), soybean stalk (SS), sawdust (SD) and their blends prepared at different ratios have been determined via thermogravimetric analysis. The simulate experiments in a fixed bed reactor were performed to investigate the partition behaviors of trace elements during co-combustion. The combustion profiles of biomass was more complicated than that of coal gangue. Ignition property and thermal reactivity of coal gangue could be enhanced by the addition of biomass. No interactions were observed between coal gangue and biomass during co-combustion. The volatilization ratios of trace elements decrease with the increasing proportions of biomass in the blends during co-combustion. Based on the results of heating value, activation energy, base/acid ratio and gaseous pollutant emissions, the blending ratio of 20-30% biomass content is regarded as optimum composition for blending and could be applied directly at current combustion application with few modifications.
authors.affiliation: CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China; State Key Laboratory in Marine Pollution and Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
authors.forename: Chuncai
authors.initials: C
authors.lastname: Zhou
authors.affiliation: CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China. Electronic address: lgj@ustc.edu.cn.
authors.forename: Guijian
authors.initials: G
authors.lastname: Liu
authors.affiliation: CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; State Key Laboratory in Marine Pollution and Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Fang
authors.affiliation: State Key Laboratory in Marine Pollution and Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
authors.forename: Paul Kwan Sing
authors.initials: PK
authors.lastname: Lam
mesh_terms: D056804:Biofuels; D018533:Biomass; D003031:Coal / Q000032:analysis; D060729:Coal Ash / Q000032:analysis; D028223:Pinus / Q000737:chemistry*; D018520:Plant Shoots; D013025:Glycine max / Q000737:chemistry*; D013818:Thermogravimetry; D014131:Trace Elements / Q000032:analysis; D014835:Volatilization; D014934:Wood / Q000737:chemistry
chemical_list: D056804:Biofuels; D003031:Coal; D060729:Coal Ash; D014131:Trace Elements
keywords: Biomass; Co-firing; Coal gangue; Thermochemical behavior; Trace element