TY - JOUR
T1 - Phosphorus adsorption by sediment considering mineral composition and environmental factors
AU - Li, Xiaocui
AU - Huang, Lei
AU - Fang, Hongwei
AU - Chen, Minghong
AU - Cui, Zhenghui
AU - Sun, Zhiyu
AU - Reible, Danny
N1 - Funding Information:
This research was funded by the 111 Project (No. B18031) and China Three Gorges Corporation (No. 201903145).
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
PY - 2021/4
Y1 - 2021/4
N2 - Sediment, composed of a complex assemblage of minerals, controls the fate and behaviour of P in aqueous environments and affects trophic status. In this study, P adsorption was studied on minerals including quartz, hematite, potassium feldspar, montmorillonite, kaolin, and calcite (i.e., the main components of sediment) and sediment from the Guanting Reservoir. A general formula for P adsorption was proposed that considers mineral composition through the component additivity method, also incorporating the effects of environmental factors, including the aqueous P concentration (Ce), pH, sediment concentration (S), and ionic strength (IS). The P adsorption capacity gradually decreased with increasing particle size, and the contributions from kaolin and montmorillonite to P adsorption were significant despite representing only a small fraction of sediment (with a maximum amount of P adsorption of 0.92 and 0.36 mg/g, respectively). The content of quartz accounted for approximately 40–60% of sediment; however, its P adsorption capacity was only 0.13 mg/g. These minerals exhibited different adsorption characteristics due to their different surface morphologies and lattice structures. Multivariable regression analysis was used to show that the amount of P adsorption was strongly correlated with Ce, followed by S, IS, and pH.
AB - Sediment, composed of a complex assemblage of minerals, controls the fate and behaviour of P in aqueous environments and affects trophic status. In this study, P adsorption was studied on minerals including quartz, hematite, potassium feldspar, montmorillonite, kaolin, and calcite (i.e., the main components of sediment) and sediment from the Guanting Reservoir. A general formula for P adsorption was proposed that considers mineral composition through the component additivity method, also incorporating the effects of environmental factors, including the aqueous P concentration (Ce), pH, sediment concentration (S), and ionic strength (IS). The P adsorption capacity gradually decreased with increasing particle size, and the contributions from kaolin and montmorillonite to P adsorption were significant despite representing only a small fraction of sediment (with a maximum amount of P adsorption of 0.92 and 0.36 mg/g, respectively). The content of quartz accounted for approximately 40–60% of sediment; however, its P adsorption capacity was only 0.13 mg/g. These minerals exhibited different adsorption characteristics due to their different surface morphologies and lattice structures. Multivariable regression analysis was used to show that the amount of P adsorption was strongly correlated with Ce, followed by S, IS, and pH.
KW - Adsorption capacity
KW - Component additivity method
KW - Environmental factors
KW - Phosphorus
KW - Sediment
UR - http://www.scopus.com/inward/record.url?scp=85098784551&partnerID=8YFLogxK
U2 - 10.1007/s11356-020-12206-9
DO - 10.1007/s11356-020-12206-9
M3 - Article
C2 - 33394414
AN - SCOPUS:85098784551
SN - 0944-1344
VL - 28
SP - 17495
EP - 17505
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 14
ER -