Abstract
In the present study the effect of SO4 2- and HPO4 2- on ion exchange of Cu2+, Fe3+ and Cr3+ on natural clinoptilolite is examined under normality of 0.01 N, temperature of 25 ± 2 °C and pH 2-2.5 after four days of equilibration. It is observed that Cu2+ uptake is significantly decreased in the presence of HPO4 2- and SO4 2. The observed effect is less significant for Fe3+ and Cr3+ in the presence of SO4 2- and HPO4 2- respectively. This could possibly be due to the metal-anion complex formation and the nature and charges of the complex species present. Blank solutions show precipitation in the case of Fe3+/HPO4 2- solution, leading in complete removal of Fe3+ from solutions. Precipitation along with ion exchange is resulting in higher removal of Fe3+ from the solution than ion exchange or precipitation alone. Finally, anion co-removal is significant, reaching 80% for HPO4 2- ions.
| Original language | English |
|---|---|
| Pages (from-to) | 167-171 |
| Number of pages | 5 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 61 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - Jul 18 2003 |
| Externally published | Yes |
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Keywords
- Adsorption
- Anion complexes
- Clinoptilolite
- Heavy metals
- Ion exchange
ASJC Scopus subject areas
- Catalysis
- Materials Science(all)
Cite this
Simultaneous removal of metals Cu2+, Fe3+ and Cr3+ with anions SO4 2- and HPO4 2- using clinoptilolite. / Inglezakis, Vassilis J.; Zorpas, Antonis A.; Loizidou, Maria D.; Grigoropoulou, Helen P.
In: Microporous and Mesoporous Materials, Vol. 61, No. 1-3, 18.07.2003, p. 167-171.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Simultaneous removal of metals Cu2+, Fe3+ and Cr3+ with anions SO4 2- and HPO4 2- using clinoptilolite
AU - Inglezakis, Vassilis J.
AU - Zorpas, Antonis A.
AU - Loizidou, Maria D.
AU - Grigoropoulou, Helen P.
PY - 2003/7/18
Y1 - 2003/7/18
N2 - In the present study the effect of SO4 2- and HPO4 2- on ion exchange of Cu2+, Fe3+ and Cr3+ on natural clinoptilolite is examined under normality of 0.01 N, temperature of 25 ± 2 °C and pH 2-2.5 after four days of equilibration. It is observed that Cu2+ uptake is significantly decreased in the presence of HPO4 2- and SO4 2. The observed effect is less significant for Fe3+ and Cr3+ in the presence of SO4 2- and HPO4 2- respectively. This could possibly be due to the metal-anion complex formation and the nature and charges of the complex species present. Blank solutions show precipitation in the case of Fe3+/HPO4 2- solution, leading in complete removal of Fe3+ from solutions. Precipitation along with ion exchange is resulting in higher removal of Fe3+ from the solution than ion exchange or precipitation alone. Finally, anion co-removal is significant, reaching 80% for HPO4 2- ions.
AB - In the present study the effect of SO4 2- and HPO4 2- on ion exchange of Cu2+, Fe3+ and Cr3+ on natural clinoptilolite is examined under normality of 0.01 N, temperature of 25 ± 2 °C and pH 2-2.5 after four days of equilibration. It is observed that Cu2+ uptake is significantly decreased in the presence of HPO4 2- and SO4 2. The observed effect is less significant for Fe3+ and Cr3+ in the presence of SO4 2- and HPO4 2- respectively. This could possibly be due to the metal-anion complex formation and the nature and charges of the complex species present. Blank solutions show precipitation in the case of Fe3+/HPO4 2- solution, leading in complete removal of Fe3+ from solutions. Precipitation along with ion exchange is resulting in higher removal of Fe3+ from the solution than ion exchange or precipitation alone. Finally, anion co-removal is significant, reaching 80% for HPO4 2- ions.
KW - Adsorption
KW - Anion complexes
KW - Clinoptilolite
KW - Heavy metals
KW - Ion exchange
UR - http://www.scopus.com/inward/record.url?scp=0042842389&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0042842389&partnerID=8YFLogxK
U2 - 10.1016/S1387-1811(03)00364-0
DO - 10.1016/S1387-1811(03)00364-0
M3 - Article
VL - 61
SP - 167
EP - 171
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
IS - 1-3
ER -