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Efficient phosphate elimination from aqueous media by La/Fe bimetallic modified bentonite: Adsorption behavior and inner mechanism by Bin Wang; Heng Zhang; Xiaoling Hu; Rongfan Chen; Wenbin Guo; Hongyu Wang; Chunyan Wang; Jianping Yuan; Ling Chen; Shang Xia is a Environmental Science article available to read on EtoBox.
What is Efficient phosphate elimination from aqueous media by La/Fe bimetallic modified bentonite: Adsorption behavior and inner mechanism about?
Nowadays, eutrophication problem in surface waterbodies has attracted specific attention. Herein, we reported facile synthesis and application of La/Fe engineered bentonite (LFB) for efficient phosphate elimination. Results indicated that bimetallic modified LFB composite could achieve efficient phosphate removal at pH 2–6, and satisfactory selectivity was implied by stable phosphate capturing within the interference of competing species (Cl−, NO3 −, HCO3 −, SO4 2−, F− and HA). Pseudo-second-order model could satisfactorily depict the kinetic behavior at different initial concentrations, indicating chemisorption of phosphate on LFB surface. Isotherm study suggested that phosphate adsorption behavior could be fitted well with Sips isotherm equation, indicating that both homogeneous monolayer adsorption and heterogeneous multilayer coverage of phosphate on LFB surface occurred within the investigated conditions. Adsorption thermodynamics implied the spontaneous and endothermic feature of phosphate loading on LFB composite. Characterization analysis confirmed successful La and Fe loading on bentonite, and electrostatic attraction and ligand exchange were the main adsorption mechanism.
Who reads Efficient phosphate elimination from aqueous media by La/Fe bimetallic modified bentonite: Adsorption behavior and inner mechanism?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Bin Wang; Heng Zhang; Xiaoling Hu; Rongfan Chen; Wenbin Guo; Hongyu Wang; Chunyan Wang; Jianping Yuan; Ling Chen; Shang Xia
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)