title: [Surface Property and Sorption Characteristics of Phosphorus onto Surface Sediments in Sanggou Bay].
abstract: Kinetic curves and isotherms were investigated to study the sorption mechanism of phosphorus onto the sediments of Sanggou Bay, together with the surface charge properties of sediments and the forms of phosphorus studied. The results showed that the sorption including a fast process and a slow one, and could be described by a two-compartment first order equation. The thermodynamic isotherms were well fitted with a modified Langmuir equation. The maximum adsorption capacity was larger in summer than in spring, and the smaller particle size was favorable to the sorption. The maximum adsorption capacities (Qm) were 0.0471-0.1230 mg x g(-1), and the zero equilibrium phosphorus concentration (EPC0) of the sediments ranged from 0.0596 mg x L(-1) to 0.1927 mg x L(-1), which indicated that the sediments from Sanggou Bay were sources of phosphorus. Inorganic phosphorus (IP) was the main form of total phosphorus (TP). The contents of exchangeable or loosely absorbed P and Fe-bound P increased significantly in the samples after sorption. The sorption process involved physical sorption and chemical sorption, with the former being the predominant.
authors.forename: Jia-mei
authors.initials: JM
authors.lastname: Zhu
authors.forename: Xiao-yan
authors.initials: XY
authors.lastname: Cao
authors.forename: Su-mei
authors.initials: SM
authors.lastname: Liu
authors.forename: Li-sha
authors.initials: LS
authors.lastname: Wang
authors.forename: Gui-peng
authors.initials: GP
authors.lastname: Yang
authors.forename: Cheng-feng
authors.initials: CF
authors.lastname: Ge
authors.forename: Min
authors.initials: M
authors.lastname: Lu
mesh_terms: D000327:Adsorption; D061006:Bays; D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D010758:Phosphorus / Q000032:analysis*; D012621:Seasons; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D010758:Phosphorus