Effects of freeze-thaw cycles on distribution and speciation of heavy metals in pig manure

doi:10.1007/s11356-019-07518-4

	Effects of freeze-thaw cycles on distribution and speciation of heavy metals in pig manure
	An, Siyu 1; Zhang, Fengsong 2; Chen, Xingcai 1; Gao, Min 1; Zhang, Xuelian 3; Hu, Baiyang 1; Li, Yanxia 1
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2020-01-02
页码	9
关键词	Freeze-thaw cycle Heavy metals Form transformation Pig manure DOM pH
ISSN号	0944-1344
DOI	10.1007/s11356-019-07518-4
通讯作者	Li, Yanxia(liyxbnu@bnu.edu.cn)
英文摘要	To understand the potential environmental influence of animal manure under freeze-thaw cycles, pig manure was used to conduct a simulation experiment to explore the effects of freeze-thaw cycles on heavy metal distribution and form transformation. Thirty cycles of freezing and thawing were performed alternately by freezing at - 18 +/- 2 degrees C for 24 h and thawing at 20 +/- 2 degrees C for 24 h. By a serial wet sieving procedure, manure samples were separated into different sizes of 1000, 250, 75, 38, and < 38 mu m. Solid samples were collected from the dry matter at each stage of sieve; then the washing waters were collected as liquid samples accordingly. The concentrations of heavy metals in solid/liquid samples and their five forms were analyzed. It showed that the concentrations of heavy metals in the solid and liquid samples gradually increased because of organic matter degradation during freezing and thawing cycles. The distribution of heavy metals on particles of different sizes was also affected by the degradation and breakup of pig manure; the metals showed a tendency to aggregate in small particles (< 38 mu m). Among them, the percentage of Cu and Zn on < 38 mu m particles increased by 162.3% and 554.1%, respectively. After several freeze-thaw cycles, the concentrations of EXCH-X (metals of exchangeable form) increased significantly, those of CARB-X (carbonate-bound form) and Fe/Mn-X (Fe/Mn oxide-bound form) decreased accordingly. These form transformations may be largely influenced by the enhancement of dissolved organic matter (DOM) and the reduction of pH value. Therefore, frequent freeze-thaw cycles may promote the mobility and bioavailability of heavy metals in pig manure. The results are significant for understanding the pollution risk of pig manure in the freeze-thaw regions.
资助项目	National Natural Science Foundation of China[21577007] ; National Natural Science Foundation of China[21976017] ; National Key Research and Development Program of China[2016YFD0800204] ; Open Project of Beijing Key Laboratory of Dairy Cow Nutrition (Beijing University of Agriculture)
WOS关键词	DISSOLVED ORGANIC-MATTER ; ANIMAL MANURE ; SOIL ; ZN ; COPPER ; SWINE ; ZINC ; CU ; SIZE ; BIOAVAILABILITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000505352200002
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Open Project of Beijing Key Laboratory of Dairy Cow Nutrition (Beijing University of Agriculture)
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/131031]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Yanxia
作者单位	1.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Beijing Soil & Fertilizer Extens Serv Stn, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	An, Siyu,Zhang, Fengsong,Chen, Xingcai,et al. Effects of freeze-thaw cycles on distribution and speciation of heavy metals in pig manure[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2020:9.
APA	An, Siyu.,Zhang, Fengsong.,Chen, Xingcai.,Gao, Min.,Zhang, Xuelian.,...&Li, Yanxia.(2020).Effects of freeze-thaw cycles on distribution and speciation of heavy metals in pig manure.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,9.
MLA	An, Siyu,et al."Effects of freeze-thaw cycles on distribution and speciation of heavy metals in pig manure".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2020):9.