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An experimental study about the effects of phosphorus loading in river sediment on the transport of lead and cadmium at sediment-water interface
Tingting Shen1,2; Yuanyuan Tang1; Yong Jie Li2; Yunsong Liu1; Hongwei Hu1
2020-06-10
Source PublicationScience of the Total Environment
ISSN0048-9697
Volume720Pages:137535
Abstract

Phosphorus (P) in the river sediment plays an important role in the fate and transport of heavy metals at sediment-water interface of the aquatic eutrophication environment. To explicate the effect of P loading, the sediments with different P contents were employed in this study to experimentally investigate the adsorption/desorption of Pb and Cd and the releasing behavior of P during the adsorption/desorption processes. Results illustrated a strong affinity between Pb ions and the P-containing sediments in both single Pb and binary Pb + Cd systems. In single-metal systems, the Pb adsorption capacities of all types of sediments (15.04–19.44 mg g) were higher than those for Cd (4.68–5.56 mg g). While in binary-metal systems, the Pb adsorption was slightly influenced by the coexisting Cd, but the Cd adsorption capacities were decreased by over 5 times. Moreover, the adsorption amount and retention ability of Pb on sediment were enhanced by increasing content of P in the sediment. Meanwhile, the releasing of P was also closely depended and significantly inhibited by the Pb attached on the sediment. The P release amounts during the desorption processes of Pb- and Pb + Cd-loaded sediments were over 50 times lower than those from the raw sediments (sediments without heavy metals adsorbed), but the values decreased by a factor of two for the single Cd-loaded sediments. Furthermore, the results of X-ray photoelectron spectroscopy indicated the crucial role of P loading in Pb transport in the sediment and overlaying water. The findings in this study showed important implications for the transport of heavy metals and P at the sediment-water interface and offered new insights for further explicating the mechanisms of secondary pollution caused by heavy metals and P in aquatic eutrophication environment.

KeywordCadmium Fate And Transport Lead Phosphorus River Sediment Sediment-water Interface
DOI10.1016/j.scitotenv.2020.137535
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000525736600007
PublisherELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
Scopus ID2-s2.0-85080134019
Fulltext Access
FWCI1.1357731
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorYuanyuan Tang; Hongwei Hu
Affiliation1.School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, China
2.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Tingting Shen,Yuanyuan Tang,Yong Jie Li,et al. An experimental study about the effects of phosphorus loading in river sediment on the transport of lead and cadmium at sediment-water interface[J]. Science of the Total Environment,2020,720:137535.
APA Tingting Shen,Yuanyuan Tang,Yong Jie Li,Yunsong Liu,&Hongwei Hu.(2020).An experimental study about the effects of phosphorus loading in river sediment on the transport of lead and cadmium at sediment-water interface.Science of the Total Environment,720,137535.
MLA Tingting Shen,et al."An experimental study about the effects of phosphorus loading in river sediment on the transport of lead and cadmium at sediment-water interface".Science of the Total Environment 720(2020):137535.
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