干旱区生态环境知识资源中心(Arid): 裂解温度对新疆棉秆生物炭物理化学性质的影响

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	裂解温度对新疆棉秆生物炭物理化学性质的影响
其他题名	Effect of Pyrolysis Temperature on Physicochemical Properties of Xinjiang Cotton-straw Biochar
	何云勇; 李心清; 杨放; 程红光; 张立科; 王倩; 黄一敏; 李阳
来源期刊	地球与环境
ISSN	1672-9250
出版年	2016
卷号	44 期号:1 页码:19-24
中文摘要	生物质的裂解温度影响其所生产的生物炭炭的物理和化学性质,进而影响其田间应用效果。棉花秸秆是干旱区特别是新疆地区的主要农业生物质资源,其生物炭利用途径有望克服现有秸秆利用途径的不足,但对棉秆生物炭理化性质及其变化的认识还很缺乏。本文在不同的裂解温度下对新疆棉秆生物炭物理和化学性质进行研究,发现随着裂解温度的升高,生物炭的产率、阳离子交换量、O/C和H/C值降低,pH、电导和持水性能提高,Na~+、K~+趋势不明显,Cl~-和SO_4~2等盐碱化离子以及Ca~(2+)、Mg~(2+)营养元素含量随温度的升高降低;C、N、S、C/N和灰分等均提高,NH_4~+-N在550 ℃碳化条件下含量最高。因此在田间应用中,应针对土壤特点和解决的问题,调控碳化温度,从而达到趋利避害的目的。
英文摘要	Pyrolysis temperature exerts great influence on physicochemical properties of biochar pyrolysic products, further on their field applications. Generally, cotton stalks are main agricultural biomass resources in arid areas, especially in the Xinjiang Autonomous Region, China and the application of biochar can overcome the drawbacks of the current utilization of straw. However, knowledge on cotton biochar physicochemical properties and their variation were seldom reported. In this study, effects of various pyrolysis temperatures on physicochemical properties of Xinjiang cotton straw biochar were investigated. Results show that, with increasing pyrolysis temperature, all of the yield, cation exchange capacity(CEC),H/C, and O/C ratios of biochar decrease, whereas the pH, electrical conductivity and water holding capacity increase; there were neither significant positive nor negative correlations of Na~+ and K~+ contents with temperature, respectively, meanwhile, contents of saline ions such as Cl~- and SO_4~2, and nutritional elements such as Ca~(2+) and Mg~(2+) decrease with increasing pyrolysis temperature; while contents of carbon, nitrogen, sulfur, C/N ratio and ash increase with increasing pyrolysis temperature; the highest content of NH~4+-N was detected at B_(550). All of these results indicate that biochar pyrolysis temperature should be properly adjusted considering the characteristics of the soil.
中文关键词	生物炭 ; 裂解温度 ; 物理化学性质 ; 固碳
英文关键词	biochar pyrolysis temperature physicochemical property carbon sequestration
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5636489
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234108
作者单位	中国科学院地球化学研究所, 环境国家重点实验室, 贵阳, 贵州 550002, 中国
推荐引用方式 GB/T 7714	何云勇,李心清,杨放,等. 裂解温度对新疆棉秆生物炭物理化学性质的影响[J],2016,44(1):19-24.
APA	何云勇.,李心清.,杨放.,程红光.,张立科.,...&李阳.(2016).裂解温度对新疆棉秆生物炭物理化学性质的影响.地球与环境,44(1),19-24.
MLA	何云勇,et al."裂解温度对新疆棉秆生物炭物理化学性质的影响".地球与环境 44.1(2016):19-24.