Abstract
To remove phosphate from solution, a new class of sorbent based on chitosan bead (CB) was prepared using copper ion (Cu(II)) with/without a traditional crosslinking agent (glutaraldehyde [GLA]); these materials are referred to as CB-G-Cu and CB-Cu, respectively. Copper ions play a key role in the CB synthesis; these species crosslink each polymer chain, and during phosphate removal, they are the active functional group. Overall, 2.5% (w/w) of chitosan is necessary to maintain the physical properties of the bead. In the FTIR spectra, adding GLA decreased the intensity of the amino group in chitosan, lowering the amount of copper in the CB. The maximum phosphate uptake (Q) for CB-Cu was 53.6 mg g-1 when calculated with the Langmuir isotherm, and the phosphate equilibrium was achieved in 12 h. Although the solution pH was not strongly affected, values below 7 are optimal for phosphate removal. The CB-Cu can be feasibly applied during a fixed column test, revealing that the phosphate breakthrough was 1.5 times higher than with CB-G-Cu.
| Original language | English |
|---|---|
| Article number | 2050 |
| Journal | Water, Air, and Soil Pollution |
| Volume | 225 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2014 |
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Keywords
- Chitosan bead
- Competing ion
- Crosslinking agent
- Phosphate removal
ASJC Scopus subject areas
- Pollution
- Environmental Chemistry
- Environmental Engineering
- Ecological Modelling
- Water Science and Technology
Cite this
Effective phosphate removal from synthesized wastewater using copper-chitosan bead : Batch and fixed-bed column studies. / An, Byungryul; Jung, Ka Young; Lee, Sang-Hyup; Lee, Seunghak; Choi, Jae Woo.
In: Water, Air, and Soil Pollution, Vol. 225, No. 8, 2050, 2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effective phosphate removal from synthesized wastewater using copper-chitosan bead
T2 - Batch and fixed-bed column studies
AU - An, Byungryul
AU - Jung, Ka Young
AU - Lee, Sang-Hyup
AU - Lee, Seunghak
AU - Choi, Jae Woo
PY - 2014
Y1 - 2014
N2 - To remove phosphate from solution, a new class of sorbent based on chitosan bead (CB) was prepared using copper ion (Cu(II)) with/without a traditional crosslinking agent (glutaraldehyde [GLA]); these materials are referred to as CB-G-Cu and CB-Cu, respectively. Copper ions play a key role in the CB synthesis; these species crosslink each polymer chain, and during phosphate removal, they are the active functional group. Overall, 2.5% (w/w) of chitosan is necessary to maintain the physical properties of the bead. In the FTIR spectra, adding GLA decreased the intensity of the amino group in chitosan, lowering the amount of copper in the CB. The maximum phosphate uptake (Q) for CB-Cu was 53.6 mg g-1 when calculated with the Langmuir isotherm, and the phosphate equilibrium was achieved in 12 h. Although the solution pH was not strongly affected, values below 7 are optimal for phosphate removal. The CB-Cu can be feasibly applied during a fixed column test, revealing that the phosphate breakthrough was 1.5 times higher than with CB-G-Cu.
AB - To remove phosphate from solution, a new class of sorbent based on chitosan bead (CB) was prepared using copper ion (Cu(II)) with/without a traditional crosslinking agent (glutaraldehyde [GLA]); these materials are referred to as CB-G-Cu and CB-Cu, respectively. Copper ions play a key role in the CB synthesis; these species crosslink each polymer chain, and during phosphate removal, they are the active functional group. Overall, 2.5% (w/w) of chitosan is necessary to maintain the physical properties of the bead. In the FTIR spectra, adding GLA decreased the intensity of the amino group in chitosan, lowering the amount of copper in the CB. The maximum phosphate uptake (Q) for CB-Cu was 53.6 mg g-1 when calculated with the Langmuir isotherm, and the phosphate equilibrium was achieved in 12 h. Although the solution pH was not strongly affected, values below 7 are optimal for phosphate removal. The CB-Cu can be feasibly applied during a fixed column test, revealing that the phosphate breakthrough was 1.5 times higher than with CB-G-Cu.
KW - Chitosan bead
KW - Competing ion
KW - Crosslinking agent
KW - Phosphate removal
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UR - http://www.scopus.com/inward/citedby.url?scp=84923017838&partnerID=8YFLogxK
U2 - 10.1007/s11270-014-2050-6
DO - 10.1007/s11270-014-2050-6
M3 - Article
AN - SCOPUS:84923017838
VL - 225
JO - Water, Air, and Soil Pollution
JF - Water, Air, and Soil Pollution
SN - 0049-6979
IS - 8
M1 - 2050
ER -