Removal and recovery of phosphorus from water by means of adsorption onto orange waste gel loaded with zirconium

Biswas, Biplob Kumar; Inoue, Katsutoshi; Ghimire, Kedar Nath; Harada, Hiroyuki; Ohto, Keisuke; Kawakita, Hidetaka

doi:10.1016/j.biortech.2008.04.015

Cited by 186 publications

(97 citation statements)

References 27 publications

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“…Among them, hydrous zirconium oxide has remarkable selectivity to phosphoric ion (Urnius et al 2000), and also high resistance against attacks by acids, alkalis, oxidants, and reductants (Suzuki et al 2000). Previous studies (Chitrakar et al 2006;Liu et al 2008;Biswas et al 2008) have found that the zirconium oxide has a high P adsorption capacity and can be used for P removal from water. However, due to its relatively high cost, the application of pure zirconium oxide for P removal is not cost-effective.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Phosphate from Aqueous Solution Using an Iron–Zirconium Binary Oxide Sorbent

Ren

Shao

Zhang

2012

Water Air Soil Pollut

108

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In this study, an iron-zirconium binary oxide with a molar ratio of 4:1 was synthesized by a simple coprecipitation process for removal of phosphate from water. The effects of contact time, initial concentration of phosphate solution, temperature, pH of solution, and ionic strength on the efficiency of phosphate removal were investigated. The adsorption data fitted well to the Langmuir model with the maximum P adsorption capacity estimated of 24.9 mg P/g at pH 8.5 and 33.4 mg P/g at pH 5.5. The phosphate adsorption was pH dependent, decreasing with an increase in pH value. The presence of Cl − , SO 4 2− , and CO 3 2− had little adverse effect on phosphate removal. A desorbability of approximately 53 % was observed with 0.5 M NaOH, indicating a relatively strong bonding between the adsorbed PO 4 3− and the sorptive sites on the surface of the adsorbent. The phosphate uptake was mainly achieved through the replacement of surface hydroxyl groups by the phosphate species and formation of innersphere surface complexes at the water/oxide interface. Due to its relatively high adsorption capacity, high selectivity and low cost, this Fe-Zr binary oxide is a very promising candidate for the removal of phosphate ions from wastewater.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Phosphate from Aqueous Solution Using an Iron–Zirconium Binary Oxide Sorbent

Ren

Shao

Zhang

2012

Water Air Soil Pollut

108

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“…Depending on pH of the solution, distribution of these species varies. The neutral species is dominant in the solution below pH 2, while mono-and divalent ones are the main components between pH 2 and 9 [7]. It is considered that theses species are adsorbed onto the Zr/activated carbons through the ligand exchange reactions of these species with OH -and/or H 2 O molecules which are coordinated to Zr ion under hydrated conditions.…”

Section: Zr-loaded Activated Carbonsmentioning

confidence: 99%

“…In order to solve such problems and to create a more sustainable environment for the coming generation, it is important to reduce phosphorus from the wastewater before discharge into natural environment. Many methods for the removal of phosphorus from wastewater have been extensively investigated including crystallization [4], chemical precipitation [5], biological applications [6], and adsorption [7,[10][11][12]. Among them, adsorption methods are promising for the removal of phosphorus from the solutions with relatively low concentrations, since other methods except for adsorption have their intrinsic drawbacks to the effluents with such lower concentrations of phosphorus [8].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, it was reported that hydrous zirconium species exhibited high selectivity to phosphoric group [10,11,12]. In addition, it was stated that hydrous zirconium species loaded on orange waste gel showed high adsorption capacity for phosphate in synthetic and real solutions [7]. Consequently, it is expected that such zirconium species dispersed on the porous solids with high surface area and microporosity has a potential for removing phosphorus from contaminated solutions through adsorptive interaction between phosphorous and highly dispersed zirconium species.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Phosphate from Aqueous Solutions onto Zirconium Loaded Activated Carbons Derived from Lignocellulosic Residues

Shindo

Takao

Ikeuchi

et al. 2011

Int.J.Soc.Mater.Eng.Resour.

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Activated carbons from raw materials of lignocellulosic residues such as rice straws, cedar bark, and waste cardboard sludge were prepared by carbonizing the raw materials under N 2 atmosphere at 673-1273 K for 1-12 h, followed by activation under CO 2 atmosphere at 973-1173 K for 0.5-6 h. Zr-loaded activated carbons were also prepared from them by a conventional impregnation method using zirconium oxynitrate solution. The obtained carbon samples were characterized by N 2 adsorption and XRD. Development of microporosity in the activated carbons was dependent upon the precursors and the activation conditions employed. The α s -plot and pore size distribution analyses exhibited that loading of Zr species on the activated carbons in this study did not give significant influences on the microporosity of the activated carbons. A quantitative adsorption of phosphate on the Zr-loaded activated carbons was achieved below pH 9. It was found that the adsorption of phosphate on both activated carbons and Zr-loaded samples was fitted satisfactorily to Langmuir adsorption isotherms. Phosphate adsorption capacities of Zr-loaded activated carbons from rice straws and waste cardboard sludge were evaluated to be 11.1 and 5.97 mg-P g -1 , respectively, which were larger than those of relevant activated carbons used as supports. Application of Dubinin-Radushkevich analysis to the phosphate adsorption isotherms indicates that the adsorption mainly proceeds through an ion exchange mechanism.

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“…A series of methods have been studied to remove phosphate from water [3], in which the adsorption based process has attracted great interest, due to the high removal efficiency and fast removal rate, especially at low phosphate concentrations [4]. Among various types of adsorbents, including inorganic, organic and inorganic-organic hybrid materials [5][6][7], well-ordered mesoporous silica materials are useful in adsorption for their unique features, such as highly ordered structures, ultrahigh surface areas, narrow mesopore size distributions, and tunable pore size and structure [8,9]. However, the pure mesoporous silicas exhibit extremely low or even immeasurable phosphate adsorption capacities, which are attributed to the poor capacity of surface groups Si-OH capturing phosphate anions from aqueous solution [10].…”

Section: Introductionmentioning

confidence: 99%

Phosphate adsorption on aluminum-coordinated functionalized macroporous–mesoporous silica: Surface structure and adsorption behavior

Huang

Zhu

et al. 2013

Materials Research Bulletin

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Zhang);Fax: +86-20-85221264; Tel: +86-20-85221264. Page 2 of 21A c c e p t e d M a n u s c r i p t 2 Abstract:In this study, Al(Ш)-coordinated diamino-functionalized macroporous-mesoporous silica was synthesized and characterized by X-ray diffraction, N 2 adsorption-desorption, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy. Because of well-defined and interconnecting macroporous-mesoporous networks, the resulting adsorbent (MM-SBA) exhibited a significantly better phosphate adsorption performance and faster removal rate, as compared with the mesoporous adsorbent (M-SBA). Based on the Freundlich and Langmuir models, the phosphate adsorption capacity and the maximum adsorption capacity of MM-SBA were 7.99 mg P/g and 23.59 mg P/g, respectively. In the kinetic study of MM-SBA, over 95% of its final adsorption capacity reached in the first 1 min;whereas that of M-SBA was less than 79%.

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Removal and recovery of phosphorus from water by means of adsorption onto orange waste gel loaded with zirconium

Cited by 186 publications

References 27 publications

Adsorption of Phosphate from Aqueous Solution Using an Iron–Zirconium Binary Oxide Sorbent

Adsorption of Phosphate from Aqueous Solution Using an Iron–Zirconium Binary Oxide Sorbent

Adsorption of Phosphate from Aqueous Solutions onto Zirconium Loaded Activated Carbons Derived from Lignocellulosic Residues

Phosphate adsorption on aluminum-coordinated functionalized macroporous–mesoporous silica: Surface structure and adsorption behavior

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