干旱区生态环境知识资源中心(Arid): Flue gas desulfurization (FGD) steel slag ameliorates salinity, sodicity, and adverse physical properties of saline-sodic soil of middle Yellow River, China

Arid

DOI	10.1007/s11356-021-13338-2
	Flue gas desulfurization (FGD) steel slag ameliorates salinity, sodicity, and adverse physical properties of saline-sodic soil of middle Yellow River, China
	Ying, Yuqian; Lu, Shenggao; Shi, Hanxiang; Shi, Yuezhan; Shi, Yuenu; Rao, Wenjun; Liu, Changsheng; Liu, Yurong
通讯作者	Lu, SG (corresponding author), Zhejiang Univ, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China. ; Lu, SG (corresponding author), Zhejiang Univ, Key Lab Environm Remediat & Ecosyst Hlth, Minist Educ, Hangzhou 310058, Peoples R China. ; Lu, SG (corresponding author), Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China.
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2021
英文摘要	Saline-sodic soil is considered the most important low-yield soil in arid and semi-arid regions. Flue gas desulfurization (FGD) steel slag is a kind of by-product from wet FGD process, in which steel slag powder replaces lime as sorbent of SO2 emitted from coal-fired power plants. It could potentially be used to ameliorate saline-sodic soil. In this study, a large-scale field experiment of applying FGD steel slag as a new amendment of saline-sodic soils was conducted in the middle Yellow River, Inner Mongolia, China. The FGD steel slag was applied at a rate of 180 t/ha in 2015, 2016, and 2018, respectively. After FGD steel slag application for 1, 3, and 4 years, the soil samples were collected. The saline-sodic field without FGD steel slag amendment was used as the control treatment (CK). Compared with control, the application of FGD steel slag significantly (p < 0.05) decreased soil pH, electric conductivity (EC), salt content, sodium adsorption ratio (SAR), and exchangeable sodium percentage (ESP) of surface soil in saline-sodic soil. However, FGD steel slag increased the EC and salt content at the lower depth of soil profile because of the salt accumulation leached from surface soil. The FGD steel slag significantly increased the concentration of Ca2+ and reduced the concentrations of Na+, Cl-, CO32-, and HCO3- ions. FGD steel slag was beneficial for improving adverse physical properties of saline-sodic soil. The application of FGD steel slag significantly reduced the plastic index, tensile strength, and the formation of cracking in saline-sodic soil. The FGD steel slag reduced surface area density of crack (Dc) and average crack width (AW) by 49.1% and 58.7%, compared with the control. The reduction of soil cracking was contributed to the release of Ca2+ from FGD steel slag to exchange the Na+ on the soil cation exchange sites, which decrease the clay dispersion in soil. The findings of this study confirmed that FGD steel slag could effectively and rapidly remediate saline-sodic soils through decreasing soil sodicity and improving poor physical properties.
英文关键词	FGD steel slag Saline-sodic soil Exchangeable sodium percentage Soil pH Soil cracking Responsible editor Kitae Baek
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000628111000015
WOS关键词	GYPSUM ; RECLAMATION ; PRODUCT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352169
作者单位	[Ying, Yuqian; Lu, Shenggao] Zhejiang Univ, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China; [Ying, Yuqian; Lu, Shenggao] Zhejiang Univ, Key Lab Environm Remediat & Ecosyst Hlth, Minist Educ, Hangzhou 310058, Peoples R China; [Ying, Yuqian; Lu, Shenggao] Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China; [Shi, Hanxiang; Shi, Yuezhan; Shi, Yuenu; Rao, Wenjun; Liu, Changsheng; Liu, Yurong] Ningbo Taiji Environm Protect Equipment Co Ltd, Ningbo 315301, Peoples R China
推荐引用方式 GB/T 7714	Ying, Yuqian,Lu, Shenggao,Shi, Hanxiang,et al. Flue gas desulfurization (FGD) steel slag ameliorates salinity, sodicity, and adverse physical properties of saline-sodic soil of middle Yellow River, China[J],2021.
APA	Ying, Yuqian.,Lu, Shenggao.,Shi, Hanxiang.,Shi, Yuezhan.,Shi, Yuenu.,...&Liu, Yurong.(2021).Flue gas desulfurization (FGD) steel slag ameliorates salinity, sodicity, and adverse physical properties of saline-sodic soil of middle Yellow River, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.
MLA	Ying, Yuqian,et al."Flue gas desulfurization (FGD) steel slag ameliorates salinity, sodicity, and adverse physical properties of saline-sodic soil of middle Yellow River, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021).