Copper Sorption and Transport in an Acidic Brown Soil

doi:10.1134/S106422932110015X

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 海岸带信息集成与综合管理实验室

	Copper Sorption and Transport in an Acidic Brown Soil
	Zhou, S. W.1; Song, Z. Z.1; Meng, L.2; Liu, X.1; Zhang, H. Y.1; Bi, X. L.2
刊名	EURASIAN SOIL SCIENCE
	2021-08-28
页码	10
关键词	Bordeaux mixture adsorption capacity of soils
ISSN号	1064-2293
DOI	10.1134/S106422932110015X
通讯作者	Bi, X. L.(xlbi@yic.ac.cn)
英文摘要	The sorption and transport of copper (Cu) in an acidic brown soil were studied using batch and column experiments. The results showed that Cu adsorption fitted better Langmuir isotherm at low pH (3.13) whereas Freundlich equation fitted better at high pH (5.87), and affinity (K and K-F) increased significantly from 0.00676 to 0.0121 L mg(-1), and from 33.05 to 135.98, respectively, with pH increase, resulting in a very great increase in adsorption capacity (Q(max)) from 970 to 2272 mg kg(-1). Its kinetics was found to be better described by a pseudo-second order model (R-2 > 0.997), where sorption rate (k(2) and h) was as low as 0.0237 and 0.0013 kg mg(-1) d(-1), and 23.89 and 106.12 mg kg(-1) d(-1), respectively, at pH 3.19, much lower (10-20 times) than those at pH 6.92. At pH 5.87, the breakthrough curve of Cu showed substantial retardation and low peak concentration (C/C-0 = 0.64); whereas at pH 3.17, full breakthrough (C/C-0 = 1) was observed, meaning great increase in mobility of Cu. Generally, two different mechanisms governed Cu sorption and transport: CuOH+ was precipitated on clay mineral surface and weaker complexation with DOM at higher pH (>5); whereas Cu2+ adsorbed to SOM surface and stronger complexation with DOM at lower pH (<4.2).
资助项目	National Natural Science Foundation of China[31670471] ; National Natural Science Foundation of China[41271254] ; high-level talent project of Ludong University
WOS关键词	DISSOLVED ORGANIC-MATTER ; HEAVY-METAL ; VINEYARD SOILS ; HUMIC-ACID ; ADSORPTION ; CU(II) ; CU ; IONS ; FRACTIONATION ; KINETICS
WOS研究方向	Agriculture
语种	英语
WOS记录号	WOS:000690707000005
资助机构	National Natural Science Foundation of China ; high-level talent project of Ludong University
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/29706]
专题	烟台海岸带研究所_海岸带信息集成与综合管理实验室烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者	Bi, X. L.
作者单位	1.Ludong Univ, Sch Agr, Yantai 264025, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Zhou, S. W.,Song, Z. Z.,Meng, L.,et al. Copper Sorption and Transport in an Acidic Brown Soil[J]. EURASIAN SOIL SCIENCE,2021:10.
APA	Zhou, S. W.,Song, Z. Z.,Meng, L.,Liu, X.,Zhang, H. Y.,&Bi, X. L..(2021).Copper Sorption and Transport in an Acidic Brown Soil.EURASIAN SOIL SCIENCE,10.
MLA	Zhou, S. W.,et al."Copper Sorption and Transport in an Acidic Brown Soil".EURASIAN SOIL SCIENCE (2021):10.