Pyrolysis temperature affects phosphorus transformation in biochar: Chemical fractionation and P-31 NMR analysis

doi:10.1016/j.scitotenv.2016.06.081

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	Pyrolysis temperature affects phosphorus transformation in biochar: Chemical fractionation and P-31 NMR analysis
	Xu, G; Zhang, Y; Shao, HB; Sun, JN; Shao, HB (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. Email:[email protected]
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
	2016-11-01
卷号	569 页码:65-72
关键词	P-31 Nmr Biochar Hedley Fraction Phosphorus Pyrophosphate Salt-soil
DOI	10.1016/j.scitotenv.2016.06.081
产权排序	[Xu, Gang; Zhang, You; Shao, Hongbo; Sun, Junna] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Shao, Hongbo] Jiangsu Acad Agr Sci, Inst Agrobiotechnol, Nanjing, Jiangsu, Peoples R China; [Sun, Junna] Ludong Univ, Coll Life Sci, Yantai 264005, Peoples R China; [Zhang, You] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
作者部门	海岸带生物学与生物资源利用所重点实验室
英文摘要	Phosphorus (P) recycling or reuse by pyrolyzing crop residue has recently elicited increased research interest. However, the effects of feedstock and pyrolysis conditions on P species have not been fully understood. Such knowledge is important in identifying the agronomic and environmental uses of biochar. Residues of three main Chinese agricultural crops and the biochars (produced at 300 degrees C-600 degrees C) derived from these crops were used to determine P transformations during pyrolysis. Hedley sequential fractionation and P-31 NMR analyses were used in the investigation. Our results showed that P transformation in biochar was significantly affected by pyrolysis temperature regardless of feedstock (Wheat straw, maize straw and peanut husk). Pyrolysis treatment transformed water soluble P into a labile (NaHCO3-Pi) or semi-labile pool (NaOH-Pi) and into a stable pool (Dil. HCl P and residual-P). At the same time, organic P was transformed into inorganic P fractions which was identified by the rapid decomposition of organic P detected with solution 31P NMR. The P transformation during pyrolysis process suggested more stable P was formed at a higher pyrolysis temperature. This result was also evidenced by the presence of less soluble or stable P species, such as such as poly-P, crandallite (CaAl3(OH)(5)(PO4)(2)) and Wavellite (Al-3(OH)(3)(PO4)(2) . 5H(2)O), as detected by solid-state P-31 NMR in biochars formed at a higher pyrolysis temperature. Furthermore, a significant proportion of less soluble pyrophosphate was identified by solution (2%-35%) and solid-state (8%-53%) P-31 NMR, which was also responsible for the stable P forms at higher pyrolysis temperature although their solubility or stability requires further investigation. Results suggested that a relatively lower pyrolysis temperature retains P availability regardless of feedstock during pyrolysis process. (C) 2016 Elsevier B.V. All rights reserved.
文章类型	Article
资助机构	National Natural Science Foundation of China(41573120 ; National Basic Research Program of China(2013CB430403) ; Shuangchuang Talent Plan of Jiangsu Province ; JiangsuAgricultural Science and Technology Innovation Fund(CX(15)1005) ; 41001137)
收录类别	SCI
语种	英语
关键词[WOS]	NUCLEAR-MAGNETIC-RESONANCE ; SOIL-PHOSPHORUS ; ORGANIC-CARBON ; MANURE ; AVAILABILITY ; SPECIATION ; NITROGEN ; COMPOST ; RELEASE ; IMPACT
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:000382269000009
引用统计	被引频次：115[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/17226
专题	海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室中国科学院海岸带环境过程与生态修复重点实验室
通讯作者	Shao, HB (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. Email:[email protected]
推荐引用方式 GB/T 7714	Xu, G,Zhang, Y,Shao, HB,et al. Pyrolysis temperature affects phosphorus transformation in biochar: Chemical fractionation and P-31 NMR analysis[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,569:65-72.
APA	Xu, G,Zhang, Y,Shao, HB,Sun, JN,&Shao, HB .(2016).Pyrolysis temperature affects phosphorus transformation in biochar: Chemical fractionation and P-31 NMR analysis.SCIENCE OF THE TOTAL ENVIRONMENT,569,65-72.
MLA	Xu, G,et al."Pyrolysis temperature affects phosphorus transformation in biochar: Chemical fractionation and P-31 NMR analysis".SCIENCE OF THE TOTAL ENVIRONMENT 569(2016):65-72.

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