DOI: 10.1016/j.watres.2017.12.008
Scopus记录号: 2-s2.0-85037651923
论文题名: Magnetite/Lanthanum hydroxide for phosphate sequestration and recovery from lake and the attenuation effects of sediment particles
作者: Fang L. ; Liu R. ; Li J. ; Xu C. ; Huang L.-Z. ; Wang D.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130 起始页码: 243
结束页码: 254
语种: 英语
英文关键词: Eutrophication control
; Lake restoration
; Lanthanum hydroxide
; Magnetic separation
; Phosphorus fractionation
Scopus关键词: Eutrophication
; Fractionation
; Lakes
; Magnetic separation
; Magnetite
; Recovery
; Sediments
; Sodium hydroxide
; Sorption
; Effective approaches
; Eutrophication control
; Lake restoration
; Lanthanum hydroxide
; Phosphate sorption
; Phosphorus fractionation
; Sediment suspension
; Sorption capacities
; Lanthanum compounds
; lanthanum
; magnetite
; phosphate
; phosphorus
; water
; lanthanum
; lanthanum hydroxide
; magnetite
; phosphate
; dose-response relationship
; eutrophication
; experimental study
; fractionation
; habitat restoration
; hydroxide
; inorganic phosphorus
; particle size
; phosphate
; separation
; sorption
; Article
; chemical structure
; fractionation
; lake
; lake sediment
; magnetic field
; one pot synthesis
; pH
; priority journal
; adsorption
; chemistry
; eutrophication
; lake
; prevention and control
; sediment
; water pollutant
; water pollution
; Adsorption
; Eutrophication
; Ferrosoferric Oxide
; Geologic Sediments
; Lakes
; Lanthanum
; Phosphates
; Phosphorus
; Water Pollutants, Chemical
; Water Pollution
英文摘要: An effective approach for eutrophication control and phosphate recovery remains a longstanding challenge. Herein, we present a new technique for phosphate sequestration in lake and phosphate recovery using novel magnetically recoverable magnetite/lanthanum hydroxide [M-La(OH)3] hybrids that can be prepared using a simple one-pot synthesis method. Batch studies show that M-La(OH)3 exhibits a strong sorption towards phosphate with sorption capacities of up to 52.7 mg-P/g at pH 7.0 in water. A simple model indicates that the efficiency of M-La(OH)3 for phosphate sequestration in lake is significantly attenuated by 34–45% compared to that in water, due to interference from sediment particles. However, our results demonstrate that sediments suspensions mixed with a M-La(OH)3 content of 1–3% exhibit a capability of up to 1.2 mg-P/g for sequestering external phosphate compared with that of 0.2 mg-P/g for pristine sediment at pH 7.3. M-La(OH)3-mixed sediment suspensions appear to effectively sequester phosphate over an environmentally relevant pH range from 4 to 8.5. Phosphorus (P) fractionation experiments indicate that the enhanced phosphate sorption by M-La(OH)3-mixed sediment suspensions is mainly due to the increased fractions of NaOH-P and inorganic P. This work indicates that the M-La(OH)3 has the potential for phosphate sequestration and recovery from lake. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113058
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Material Science and Chemistry, China University of Geosciences, No. 388, Lumo Road, Wuhan, 430074, China; School of Civil Engineering, Wuhan University, No. 8, East Lake South Road, Wuhan, China; Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, DK-8000, Denmark; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
Recommended Citation:
Fang L.,Liu R.,Li J.,et al. Magnetite/Lanthanum hydroxide for phosphate sequestration and recovery from lake and the attenuation effects of sediment particles[J]. Water Research,2018-01-01,130