Phosphate adsorption using modified iron oxide-based sorbents in lake water: Kinetics, equilibrium, and column tests

被引:402
作者
Lalley, Jacob [1 ,2 ]
Han, Changseok [1 ]
Li, Xuan [1 ]
Dionysiou, Dionysios D. [2 ]
Nadagouda, Mallikarjuna N. [1 ]
机构
[1] US EPA, ORD, NRMRL, WSWRD,WQMB, Cincinnati, OH 45268 USA
[2] Univ Cincinnati, Environm Engn & Sci Program, DBCEE, Cincinnati, OH 45221 USA
关键词
Adsorption; Nutrients; Nutrient removal/recovery; Phosphate; Water treatment; PHOSPHORUS; REMOVAL; GOETHITE; EUTROPHICATION; PRECIPITATION; DIFFUSION; ARSENATE; DYES;
D O I
10.1016/j.cej.2015.08.114
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Adsorption behavior of Bayoxide (R) E33 (E33) and three E33-modified sorbents for the removal of phosphate from lake water was investigated in this study. E33-modified sorbents were synthesized by coating with manganese (E33/Mn) and silver (E33/AgI and E33/AgII).nanoparticles. Adsorbent characterization was done by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), surface area analyzer (BET), transmission electron microscopy (TEM), and high resolution TEM (HR-TEM) analysis. Batch, equilibrium, and column experiments were conducted to determine various adsorption parameters. Equilibrium data were fitted to different adsorption isotherms and the Langmuir isotherm provided the best fit. Based on the Langmuir model, it was found that E33/AgII had a slightly higher maximum monolayer adsorption capacity (38.8 mg g(-1)) when compared to unmodified E33 (37.7 mg g(-1)). Data for adsorption kinetics were found to best fit with the pseudosecond-order model, suggesting chemisorption is the mechanism of sorption. Intra-particle diffusion studies indicated that the rate-limiting step for phosphate sorption onto E33 and modified E33 was intra-particle diffusion. Although limited improvements were seen, the results of this study suggest that the surface of E33 can be modified with nanoparticles to enhance the adsorption of phosphate from aqueous solutions and may give other advantages such as limiting biofouling over an extended lifetime of numerous recovery/regeneration steps. Published by Elsevier B.V.
引用
收藏
页码:1386 / 1396
页数:11
相关论文
共 47 条
[1]  
Akai J, 1999, AM MINERAL, V84, P171
[2]  
ALLEN SJ, 1989, J CHEM TECHNOL BIOT, V45, P291
[3]  
Amy G., 2005, Adsorbent treatment technologies for arsenic removal
[4]   Harmful algal blooms and eutrophication: Nutrient sources, composition, and consequences [J].
Anderson, DM ;
Glibert, PM ;
Burkholder, JM .
ESTUARIES, 2002, 25 (4B) :704-726
[5]  
[Anonymous], 2006, IRON OXIDES STRUCTUR
[6]   Effects of pH and ionic strength on the adsorption of phosphate and arsenate at the goethite-water interface [J].
Antelo, J ;
Avena, M ;
Fiol, S ;
López, R ;
Arce, F .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 285 (02) :476-486
[7]   Growth of Silver Nanoparticles by DCMagnetron Sputtering [J].
Asanithi, P. ;
Chaiyakun, S. ;
Limsuwan, P. .
JOURNAL OF NANOMATERIALS, 2012, 2012
[8]   Intraparticle diffusion and adsorption of arsenate onto granular ferric hydroxide (GFH) [J].
Badruzzaman, M ;
Westerhoff, P ;
Knappe, DRU .
WATER RESEARCH, 2004, 38 (18) :4002-4012
[9]   Arsenic - a review. Part II: Oxidation of arsenic and its removal in water treatment [J].
Bissen, M ;
Frimmel, FH .
ACTA HYDROCHIMICA ET HYDROBIOLOGICA, 2003, 31 (02) :97-107
[10]  
Bottero J.-Y., 2006, ENCY SURFACE COLLOID, P140