Phosphate removal ability of biochar/MgAl-LDH ultra-fine composites prepared by liquid-phase deposition

被引：283
作者：
Zhang, Ming [1 ]
Gao, Bin [1 ]
Yao, Ying [1 ]
Inyang, Mandu [1 ]
机构：
[1] Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA
来源：
CHEMOSPHERE | 2013年 / 92卷 / 08期
基金：
美国国家科学基金会;
关键词：
Biochar; Layered double hydroxide; Ultra-fine composites; Liquid-phase deposition; Adsorption; Phosphate; LAYERED DOUBLE HYDROXIDES; HAZARDOUS ELEMENTS; AQUEOUS-SOLUTION; HEAVY-METALS; ADSORPTION; WATER; NANOCOMPOSITES; MINERALS; CHARCOAL; SORPTION;
D O I：
10.1016/j.chemosphere.2013.02.050
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Morphological structures and adsorption properties of biochar/MgAl-LDH ultra-fine composites prepared by liquid-phase deposition have been determined in laboratory. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), and Fourier transform infrared (FTIR) were used to characterize the biochar based ultra-composites. The XRD and FTIR data indicated that the biochar/MgAl-LDHs ultra-fine composites can successfully be obtained by liquid-phase deposition. The SEM images showed the dispersion of colloidal and nanosized LDH flakes on the carbon surfaces within the biochar matrix. The thickness and size of single LDH platelet are 20-40 nm and 100-300 nm. Batch sorption experiments were also conducted and the results indicated that the biochar/MgAl-LDHs ultra-fine composites is an effective sorbent for the removal of phosphate from aqueous solutions. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1042 / 1047
页数：6
相关论文
共 41 条
[1]   Organo/LDH nanocomposite as an adsorbent of polycyclic aromatic hydrocarbons in water and soil-water systems [J].
Bruna, F. ;
Celis, R. ;
Real, M. ;
Cornejo, J. .
JOURNAL OF HAZARDOUS MATERIALS, 2012, 225 :74-80
[2]   Time of flight secondary ion mass spectrometry and high-resolution transmission electron microscopy/energy dispersive spectroscopy: A preliminary study of the distribution of Cu2+ and Cu2+/Pb2+ on a Bt horizon surfaces [J].
Cerqueira, B. ;
Vega, F. A. ;
Serra, C. ;
Silva, L. F. O. ;
Andrade, M. L. .
JOURNAL OF HAZARDOUS MATERIALS, 2011, 195 :422-431
[3]   Effects of vegetation on chemical and mineralogical characteristics of soils developed on a decantation bank from a copper mine [J].
Cerqueira, Beatriz ;
Vega, Flora A. ;
Silva, Luis F. O. ;
Andrade, Luisa .
SCIENCE OF THE TOTAL ENVIRONMENT, 2012, 421 :220-229
[4]   LLDPE/ZnAlLDH-exfoliated nanocomposites: effects of nanolayers on thermal and mechanical properties [J].
Chen, W ;
Qu, BJ .
JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (11) :1705-1710
[5]   INTERCALATION OF ORGANIC AND INORGANIC ANIONS INTO LAYERED DOUBLE HYDROXIDES [J].
CHIBWE, K ;
JONES, W .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1989, (14) :926-927
[6]   Uptake properties of phosphate on a novel Zr-modified MgFe-LDH(CO3) [J].
Chitrakar, Ramesh ;
Tezuka, Satoko ;
Hosokawa, Junji ;
Makita, Yoji ;
Sonoda, Akinari ;
Ooi, Kenta ;
Hirotsu, Takahiro .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2010, 349 (01) :314-320
[7]   N2O release from agro-biofuel production negates global warming reduction by replacing fossil fuels [J].
Crutzen, P. J. ;
Mosier, A. R. ;
Smith, K. A. ;
Winiwarter, W. .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2008, 8 (02) :389-395
[8]   Adsorption of phosphate by layered double hydroxides in aqueous solutions [J].
Das, J. ;
Patra, B. S. ;
Baliarsingh, N. ;
Parida, K. M. .
APPLIED CLAY SCIENCE, 2006, 32 (3-4) :252-260
[9]   Layered double hydroxide (LDH)-coated attapulgite for phosphate removal from aqueous solution [J].
Gan Fang-qun ;
Zhou Jian-min ;
Wang Huo-yan ;
Zhao Hong-ting .
WATER SCIENCE AND TECHNOLOGY, 2011, 64 (11) :2192-2198
[10]   Application of chitosan for the removal of metals from wastewaters by adsorption - Mechanisms and models review [J].
Gerente, C. ;
Lee, V. K. C. ;
Le Cloirec, P. ;
McKay, G. .
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, 2007, 37 (01) :41-127
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