李犇1,
徐樑1,
郑仙荣1,
乔晓磊1,
樊保国1
1.太原理工大学电气与动力工程学院,太原 030024
基金项目: 国家自然科学基金资助项目(U1510135)
Effects of different preparation conditions on kinetics and adsorption of mercury by biomass char
JIA Li1,,LI Ben1,
XU Liang1,
ZHENG Xianrong1,
QIAO Xiaolei1,
FAN Baoguo1
1.College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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摘要:为获得生物焦对汞的吸附特性,对不同制备条件下的生物焦进行研究。通过分析生物质种类、制备粒径、制备温度以及制备氧浓度对生物焦吸附汞的影响,并结合其吸附动力学过程,进一步探究吸附机理。结果表明:不同制备条件下生物焦汞吸附特性存在差异；生物焦对汞的物理吸附中,孔隙结构对其具有影响,累积孔体积越大,单位汞吸附量越高,利于生物焦对汞的吸附；与比表面积相比,比孔容积在汞吸附过程中发挥更为重要的作用；化学吸附与物理吸附均在生物焦汞吸附过程中起到重要影响,且化学吸附是其主要的控速步骤。
关键词: 生物焦/
制备条件/
汞/
吸附特性/
吸附动力学
Abstract:In order to obtain the characteristic of biomass char on mercury adsorption, the biomass char prepared with various conditions was studied. The influence of preparation condition of biomass char on mercury adsorption was obtained. These preparation parameters include biomass species, particle size, temperature and oxygen concentration. The adsorption kinetic characteristics of biomass char was investigated, which can provide theoretical foundation for further research on the mechanism of biomass char on mercury adsorption. The results show that there are differences in mercury adsorption by biomass char with various preparation conditions. The pore structure influenced greatly in physical adsorption. The more cumulative pore volume of biomass char and thus the more mercury adsorbed. The specific pore volume plays a more significant role than specific surface area in the mercury adsorption process. The adsorption process was effected by both chemical adsorption and physical absorption, and the former is an important rate-limiting process.
Key words:biomass char/
preparation condition/
mercury/
adsorption characteristics/
adsorption kinetics.
| [1] | KARATZA D, LANCIA A, MUSMARRA D, et al.Study of mercury adsorption and desorptionon sulpur impregnated carbon[J].Experimental Thermal & Fluid Science,2000,1:150-155 |
| [2] | 李珊,李洋,梁汉东,等.北京城郊燃煤汞排放及其对当地空气环境的影响[J].环境科学研究,2014,27(12):1420-1425 |
| [3] | SYVERSEN T,KAUR P.The toxicology of mercury and its compounds[J].Journal of Trace Elements in Medicine & Biology,2012,26(4):215-226 |
| [4] | CUCULI＇ V,CUKROV N,KWOKAL ,et al.Natural and anthropogenic sources of Hg,Cd,Pb,Cu and Zn in seawater and sediment of Mljet National Park,Croatia[J].Estuarine Coastal & Shelf Science,2009,81(3):311-320 |
| [5] | CHEN C X, ZHENG B H, JIANG X, et al.Spatial distribution and pollution assessment of mercury in sediments of Lake Taihu, China[J].Journal of Environmental Sciences,2013,5(2):316-325 |
| [6] | 修光利,张艳艳,蔡姬,等.大气颗粒物中汞的赋存形态及其依存条件[J].环境科学研究,2013,26(8):807-813 |
| [7] | 王亚杰,朱云,王龙.中国区大气汞污染模型模拟初探[J].环境科学研究,2010,23(10):1250-1256 |
| [8] | 杨建平, 赵永椿, 张军营, 等.燃煤电站飞灰对汞的氧化和捕获的研究进展[J].动力工程学报,2014,4(5):337-345 |
| [9] | 张成,杨永奎,王定勇.重庆大气汞人为排放及其预测[J].环境科学研究,2011,24(8):904-908 |
| [10] | 菅小东,沈英娃,姚薇,等.我国汞供需现状分析及削减对策[J].环境科学研究,2009,2(7):788-792 |
| [11] | PUDASAINEE D,KIM J H,SEO Y C.Mercury emission trend influenced by stringent air pollutants regulation for coal-fired power plants in Korea[J].Atmospheric Environment,2009,43(39):6254-6259 |
| [12] | DABROWSKI J M, ASHTON P J, MURRAY K, et al.Anthropogenic mercury emissions in South Africa: Coal combustion in power plants[J].Atmospheric Environment,2008,2(27):6620-6626 |
| [13] | 支国瑞,薛志钢,李洋,等.基于国内实测燃煤电厂烟气汞排放估算的不确定度[J].环境科学研究,2013,26(8):814-821 |
| [14] | 高炜,支国瑞,薛志钢,等.1980—2007年我国燃煤大气汞、铅、砷排放趋势分析[J].环境科学研究,2013,26(8):822-828 |
| [15] | LIBERTI L, NOTARNICOLA M, AMICARELLI V, et al.Mercury removal with powdered activated carbon from flue gases at the Coriano municipal solid waste incineration plant[J].Waste Management & Research,1998,6(2):183-189 |
| [16] | GRAYDON J W, ZHANG X, KIRK D W, et al.Sorption and stability of mercury on activated carbon for emission control[J].Journal of Hazardous Materials,2009,8(2/3):978-982 |
| [17] | GUO X,ZHENG C G,XU M.Characterization of mercury emissions from a coal-fired power plant[J].Energy & Fuels,2007,21(2):898-902 |
| [18] | CHEN C,ZHENG B,JIANG X,et al.Spatial distribution and pollution assessment of mercury in sediments of Lake Taihu,China[J].Journal of Environmental Sciences,2013,25(2):316-325 |
| [19] | 代学伟,吴江,齐雪梅,等.Fe掺杂TiO2催化剂制备及其光催化脱汞机理[J].环境科学研究,2014,4(8):827-834 |
| [20] | 董长青, 胡笑颖, 杨勇平,等.生物质气再燃减少流化床N2O排放的实验研究[J].燃料化学学报,2010,8(2):236-241 |
| [21] | 张军, 林晓芬, 印佳敏,等.生物质焦脱硫性能实验研究[J].工程热物理学报,2005,6(3):537-539 |
| [22] | 佘敏, 段钰锋, 朱纯,等.改性生物质活性焦碳管吸附剂汞吸附性能实验研究[J].工程热物理学报, 2014,6(9):2060-2064 |
| [23] | 尹建军, 段钰锋, 王运军,等.生物质焦的表征及其吸附烟气中汞的研究[J].燃料化学学报,2012,0(4):390-396 |
| [24] | 张海茹, 吴昊, 刘浩,等.活性焦汞吸附特性及动力学机理分析[J].化工学报,2013,4(3):1076-1083 |
| [25] | 张郃, 赵建涛, 房倚天,等.活性炭孔隙结构对催化氧化脱除单质汞的影响[J].燃料化学学报, 2015,3(3):360-366 |
| [26] | SKODRAS G, DIAMANTOPOULOU I, ZABANIOTOU A, et al.Enhanced mercury adsorption in activated carbons from biomass materials and waste tires[J].Fuel Processing Technology,2007,8(8):749-758 |
| [27] | 任建莉, 陈俊杰, 罗誉娅,等.活性炭纤维脱除烟气中气态汞的试验研究[J].中国电机工程学报, 2010,0(5):28-34 |
| [28] | 刘荣厚, 袁海荣, 徐璐.玉米秸秆热解反应动力学的研究[J].太阳能学报,2007,8(5):527-531 |
| [29] | ANDRZEJ B J, JAROSAW L, YURI I A, et al.Porous texture characteristics of a homologous series of base-catalyzed silica aerogels[J].Journal of Non-Crystalline Solids,1995,0(3):198-205 |
| [30] | PFEIFER P.Fractals in Surface Science: Scattering and Thermodynamics of Adsorbed Films[M].Berlin,Heidelberg:Springer,1988:283-305 |
| [31] | 付鹏, 胡松, 向军,等.生物质颗粒孔隙结构在热解过程中的变化[J].化工学报,2009,0(7):1793-1799 |
| [32] | LJUBIA R R, PHILIP L W J, ROBERT G J.Importance of carbon active sites in the gasification of coal chars[J].Fuel,1983,2(7):849-856 |
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不同制备条件对生物焦汞吸附特性及吸附动力学的影响
贾里1,,李犇1,
徐樑1,
郑仙荣1,
乔晓磊1,
樊保国1
1.太原理工大学电气与动力工程学院,太原 030024
基金项目: 国家自然科学基金资助项目(U1510135)
关键词: 生物焦/
制备条件/
汞/
吸附特性/
吸附动力学
摘要:为获得生物焦对汞的吸附特性,对不同制备条件下的生物焦进行研究。通过分析生物质种类、制备粒径、制备温度以及制备氧浓度对生物焦吸附汞的影响,并结合其吸附动力学过程,进一步探究吸附机理。结果表明:不同制备条件下生物焦汞吸附特性存在差异；生物焦对汞的物理吸附中,孔隙结构对其具有影响,累积孔体积越大,单位汞吸附量越高,利于生物焦对汞的吸附；与比表面积相比,比孔容积在汞吸附过程中发挥更为重要的作用；化学吸附与物理吸附均在生物焦汞吸附过程中起到重要影响,且化学吸附是其主要的控速步骤。
English Abstract
Effects of different preparation conditions on kinetics and adsorption of mercury by biomass char
JIA Li1,,LI Ben1,
XU Liang1,
ZHENG Xianrong1,
QIAO Xiaolei1,
FAN Baoguo1
1.College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Keywords: biomass char/
preparation condition/
mercury/
adsorption characteristics/
adsorption kinetics
Abstract:In order to obtain the characteristic of biomass char on mercury adsorption, the biomass char prepared with various conditions was studied. The influence of preparation condition of biomass char on mercury adsorption was obtained. These preparation parameters include biomass species, particle size, temperature and oxygen concentration. The adsorption kinetic characteristics of biomass char was investigated, which can provide theoretical foundation for further research on the mechanism of biomass char on mercury adsorption. The results show that there are differences in mercury adsorption by biomass char with various preparation conditions. The pore structure influenced greatly in physical adsorption. The more cumulative pore volume of biomass char and thus the more mercury adsorbed. The specific pore volume plays a more significant role than specific surface area in the mercury adsorption process. The adsorption process was effected by both chemical adsorption and physical absorption, and the former is an important rate-limiting process.
