Accepted Manuscript Title: Preferable Removal of Phosphate from Water Using Hydrous Zirconium Oxide-based Nanocomposite of High Stability Author: Liang Chen Xin Zhao Bingcai Pan Weixian Zhang Ming Hua Lu Lv Weiming Zhang PII: DOI: Reference:
S0304-3894(14)00891-7 http://dx.doi.org/doi:10.1016/j.jhazmat.2014.10.048 HAZMAT 16365
To appear in:
Journal of Hazardous Materials
Received date: Revised date: Accepted date:
7-8-2014 30-10-2014 31-10-2014
Please cite this article as: Liang Chen, Xin Zhao, Bingcai Pan, Weixian Zhang, Ming Hua, Lu Lv, Weiming Zhang, Preferable Removal of Phosphate from Water Using Hydrous Zirconium Oxide-based Nanocomposite of High Stability, Journal of Hazardous Materials http://dx.doi.org/10.1016/j.jhazmat.2014.10.048 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.
Preferable Removal of Phosphate from Water Using Hydrous Zirconium Oxide-based Nanocomposite of High Stability
Liang Chena, Xin Zhaoa, Bingcai Pana*, Weixian Zhangb, Ming Hua*, Lu Lv, Weiming Zhanga,a
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment,
PT
a
Nanjing University, Nanjing 210023, P.R. China
State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental
RI
b
SC
Science and Engineering, Tongji University, Shanghai 200092, P.R. China
U
*Corresponding author. Tel: +86-25-89680390 E-mail address: [email protected] (B. Pan);
A
N
[email protected] (M. Hua)
D
M
Highlights
TE
The nanocomposite HZO-201 was stable under varying solution chemistry
EP
HZO-201 exhibited preferable phosphate removal over other ubiquitous anions.
CC
Selective sorption mechanism was probed and discussed.
A
HZO-201 could be regenerated for cyclic use with constant efficiency.
Graphical abstract ABSTRACT
In this study we employed a new nanocomposite adsorbent HZO-201, which featured high stability under varying solution chemistry, for preferable removal of phosphate from synthetic solution and a real effluent. An anion exchange resin (D-201)
was employed as the host of HZO-201, where nano-hydrous zirconium oxide (HZO) was encapsulated as the active species. D-201 binds phosphate through nonspecific electrostatic affinity, whereas the loaded HZO nanoparticles capture phosphate through formation of the inner-sphere complexes. Quantitative contribution of both species to phosphate adsorption was predicted based on the Double-Langmuir model. Preferable removal of phosphate by HZO-201 was observed in the presence of the competing anions at higher levels (Cl-, NO3-, SO42-, HCO3-). Fixed-bed adsorption indicated that the effective volume capacity of a synthetic water (2.0 mg P-PO43-/L)
PT
by using HZO-201 was ~1600 BV in the first run (< 0.5 mg P-PO43-/L), comparable to Fe(III)-based nanocomposite HFO-201 (~1500 BV) and much larger than D-201
RI
(
S0304-3894(14)00891-7 http://dx.doi.org/doi:10.1016/j.jhazmat.2014.10.048 HAZMAT 16365
To appear in:
Journal of Hazardous Materials
Received date: Revised date: Accepted date:
7-8-2014 30-10-2014 31-10-2014
Please cite this article as: Liang Chen, Xin Zhao, Bingcai Pan, Weixian Zhang, Ming Hua, Lu Lv, Weiming Zhang, Preferable Removal of Phosphate from Water Using Hydrous Zirconium Oxide-based Nanocomposite of High Stability, Journal of Hazardous Materials http://dx.doi.org/10.1016/j.jhazmat.2014.10.048 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.
Preferable Removal of Phosphate from Water Using Hydrous Zirconium Oxide-based Nanocomposite of High Stability
Liang Chena, Xin Zhaoa, Bingcai Pana*, Weixian Zhangb, Ming Hua*, Lu Lv, Weiming Zhanga,a
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment,
PT
a
Nanjing University, Nanjing 210023, P.R. China
State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental
RI
b
SC
Science and Engineering, Tongji University, Shanghai 200092, P.R. China
U
*Corresponding author. Tel: +86-25-89680390 E-mail address: [email protected] (B. Pan);
A
N
[email protected] (M. Hua)
D
M
Highlights
TE
The nanocomposite HZO-201 was stable under varying solution chemistry
EP
HZO-201 exhibited preferable phosphate removal over other ubiquitous anions.
CC
Selective sorption mechanism was probed and discussed.
A
HZO-201 could be regenerated for cyclic use with constant efficiency.
Graphical abstract ABSTRACT
In this study we employed a new nanocomposite adsorbent HZO-201, which featured high stability under varying solution chemistry, for preferable removal of phosphate from synthetic solution and a real effluent. An anion exchange resin (D-201)
was employed as the host of HZO-201, where nano-hydrous zirconium oxide (HZO) was encapsulated as the active species. D-201 binds phosphate through nonspecific electrostatic affinity, whereas the loaded HZO nanoparticles capture phosphate through formation of the inner-sphere complexes. Quantitative contribution of both species to phosphate adsorption was predicted based on the Double-Langmuir model. Preferable removal of phosphate by HZO-201 was observed in the presence of the competing anions at higher levels (Cl-, NO3-, SO42-, HCO3-). Fixed-bed adsorption indicated that the effective volume capacity of a synthetic water (2.0 mg P-PO43-/L)
PT
by using HZO-201 was ~1600 BV in the first run (< 0.5 mg P-PO43-/L), comparable to Fe(III)-based nanocomposite HFO-201 (~1500 BV) and much larger than D-201
RI
(
