Flow Rate and Interference Studies for Copper Binding to a Silica-Immobilized Humin Polymer Matrix: Column and Batch Experiments
Batch and column experiments were performed to determine the Cu(II) binding capacity of silica-immobilized humin biomass. For column studies, 500 bed volumes of a 0.1 mM Cu(II) solution were passed through humin packed columns at the flow rates of 1, 1.5, 2, and 3 mL/min. The biopolymer showed an av...
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Wiley
2005-01-01
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| Series: | Bioinorganic Chemistry and Applications |
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| Online Access: | http://dx.doi.org/10.1155/BCA.2005.1 |
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| author | Jorge L. Gardea-Torresdey Carolina Contreras Guadalupe de la Rosa Jose R. Peralta-Videa |
| author_facet | Jorge L. Gardea-Torresdey Carolina Contreras Guadalupe de la Rosa Jose R. Peralta-Videa |
| author_sort | Jorge L. Gardea-Torresdey |
| collection | DOAJ |
| description | Batch and column experiments were performed to determine the Cu(II) binding capacity of silica-immobilized humin biomass. For column studies, 500 bed volumes of a 0.1 mM Cu(II) solution were passed through humin packed columns at the flow rates of 1, 1.5, 2, and 3 mL/min. The biopolymer showed an average Cu binding capacity of 12 ± 1.5 mg/g and a Cu recovery of about 96.5 % ± 1.5. The breakthrough points for Cu(II) alone were approximately 420, 390, 385, and 300 bed volumes for the flow rates of 1, 1.5, 2 and 3 mL/min, respectively. The interference studies demonstrated that at low concentrations, the hard cations Ca(II) and Mg(II) did not seem to represent a major interference on Cu(II) binding to the humin biopolymer. The selectivity showed by this biopolymer was Cu(II)>Ca(II)>Mg(II). On the other hand, batch experiments showed that Ca(II) + Mg(II) at 100mM each reduced the Cu(II) binding to 73 %. However, 1000 mM concentrations of Ca(II) and Mg(II), separately and in mixture, reduced the Cu(II) binding to 47 %, 44 % and 31 %, respectively. The results of this study showed that immobilized humin in a silica matrix could represent an inexpensive bio-source for Cu removal from contaminated water, even in the presence of low concentrations of the hard cations Ca(II) and Mg(II). |
| format | Article |
| id | doaj-art-0e233bb40ce246498579b489950e126b |
| institution | Kabale University |
| issn | 1565-3633 |
| language | English |
| publishDate | 2005-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Bioinorganic Chemistry and Applications |
| spelling | doaj-art-0e233bb40ce246498579b489950e126b2025-02-03T01:32:43ZengWileyBioinorganic Chemistry and Applications1565-36332005-01-0131-211410.1155/BCA.2005.1Flow Rate and Interference Studies for Copper Binding to a Silica-Immobilized Humin Polymer Matrix: Column and Batch ExperimentsJorge L. Gardea-Torresdey0Carolina Contreras1Guadalupe de la Rosa2Jose R. Peralta-Videa3Chemistry Department, University of Texas at El Paso, El Paso, TX 79968, USAChemistry Department, University of Texas at El Paso, El Paso, TX 79968, USAEnvironmental Science and Engineering Ph.D. Program, University of Texas at El Paso, El Paso, TX 79968, USAChemistry Department, University of Texas at El Paso, El Paso, TX 79968, USABatch and column experiments were performed to determine the Cu(II) binding capacity of silica-immobilized humin biomass. For column studies, 500 bed volumes of a 0.1 mM Cu(II) solution were passed through humin packed columns at the flow rates of 1, 1.5, 2, and 3 mL/min. The biopolymer showed an average Cu binding capacity of 12 ± 1.5 mg/g and a Cu recovery of about 96.5 % ± 1.5. The breakthrough points for Cu(II) alone were approximately 420, 390, 385, and 300 bed volumes for the flow rates of 1, 1.5, 2 and 3 mL/min, respectively. The interference studies demonstrated that at low concentrations, the hard cations Ca(II) and Mg(II) did not seem to represent a major interference on Cu(II) binding to the humin biopolymer. The selectivity showed by this biopolymer was Cu(II)>Ca(II)>Mg(II). On the other hand, batch experiments showed that Ca(II) + Mg(II) at 100mM each reduced the Cu(II) binding to 73 %. However, 1000 mM concentrations of Ca(II) and Mg(II), separately and in mixture, reduced the Cu(II) binding to 47 %, 44 % and 31 %, respectively. The results of this study showed that immobilized humin in a silica matrix could represent an inexpensive bio-source for Cu removal from contaminated water, even in the presence of low concentrations of the hard cations Ca(II) and Mg(II).http://dx.doi.org/10.1155/BCA.2005.1humin-silica biopolymerpacked-bed columnheavy metalsremovalcopperhard cations. |
| spellingShingle | Jorge L. Gardea-Torresdey Carolina Contreras Guadalupe de la Rosa Jose R. Peralta-Videa Flow Rate and Interference Studies for Copper Binding to a Silica-Immobilized Humin Polymer Matrix: Column and Batch Experiments Bioinorganic Chemistry and Applications humin-silica biopolymer packed-bed column heavy metals removal copper hard cations. |
| title | Flow Rate and Interference Studies for Copper Binding
to a Silica-Immobilized Humin Polymer Matrix:
Column and Batch Experiments |
| title_full | Flow Rate and Interference Studies for Copper Binding
to a Silica-Immobilized Humin Polymer Matrix:
Column and Batch Experiments |
| title_fullStr | Flow Rate and Interference Studies for Copper Binding
to a Silica-Immobilized Humin Polymer Matrix:
Column and Batch Experiments |
| title_full_unstemmed | Flow Rate and Interference Studies for Copper Binding
to a Silica-Immobilized Humin Polymer Matrix:
Column and Batch Experiments |
| title_short | Flow Rate and Interference Studies for Copper Binding
to a Silica-Immobilized Humin Polymer Matrix:
Column and Batch Experiments |
| title_sort | flow rate and interference studies for copper binding to a silica immobilized humin polymer matrix column and batch experiments |
| topic | humin-silica biopolymer packed-bed column heavy metals removal copper hard cations. |
| url | http://dx.doi.org/10.1155/BCA.2005.1 |
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