Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae)
Different experiments about the accumulation capacity for copper and zinc were carried out on the marine microalgae Nannochloropsis gaditana Lubián (Eustigmatophyceae). A 24-hour study of the evolution of accumulated metal in the beads revealed two possible accumulation phases. Accumulation differ...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2002-03-01
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| Series: | Ciencias Marinas |
| Subjects: | |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/203 |
| _version_ | 1797279319169433600 |
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| author | I Moreno-Garrido GA Codd GM Gadd LM Lubián |
| author_facet | I Moreno-Garrido GA Codd GM Gadd LM Lubián |
| author_sort | I Moreno-Garrido |
| collection | DOAJ |
| description |
Different experiments about the accumulation capacity for copper and zinc were carried out on the marine microalgae Nannochloropsis gaditana Lubián (Eustigmatophyceae). A 24-hour study of the evolution of accumulated metal in the beads revealed two possible accumulation phases. Accumulation differences between free and immobilized microalgal cells were investigated finding no differences for copper, and little differences for zinc. Free cells accumulated practically 100% Cu or Zn in the media under experimental conditions. Experiments in order to compare the accumulation capacity of living vs. dead cells were designed too, obtaining the largest accumulation levels for both metals in the beads containing immobilized living microalgae. In experiments carried out in continuous-flow reactors, beads with entrapped cells showed to be more efficient removing Cu and Zn than beads without cells. In all the experiments, the calcium alginate beads showed strong affinity for Cu. Similar results were obtained when accumulation by packed beads in columns was tested, but efficacy was higher if this design was used (beads with cells retain 80% of Cu introduced in the column).
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| first_indexed | 2024-03-07T16:24:29Z |
| format | Article |
| id | doaj.art-55caf93930ee421a921331f20897fb80 |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:24:29Z |
| publishDate | 2002-03-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-55caf93930ee421a921331f20897fb802024-03-03T19:28:28ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532002-03-0128110.7773/cm.v28i1.203Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae)I Moreno-Garrido0GA Codd1GM Gadd2LM Lubián3Instituto de Ciencias Marinas de AndalucíaUniversity of DundeeUniversity of DundeeInstituto de Ciencias Marinas de Andalucía Different experiments about the accumulation capacity for copper and zinc were carried out on the marine microalgae Nannochloropsis gaditana Lubián (Eustigmatophyceae). A 24-hour study of the evolution of accumulated metal in the beads revealed two possible accumulation phases. Accumulation differences between free and immobilized microalgal cells were investigated finding no differences for copper, and little differences for zinc. Free cells accumulated practically 100% Cu or Zn in the media under experimental conditions. Experiments in order to compare the accumulation capacity of living vs. dead cells were designed too, obtaining the largest accumulation levels for both metals in the beads containing immobilized living microalgae. In experiments carried out in continuous-flow reactors, beads with entrapped cells showed to be more efficient removing Cu and Zn than beads without cells. In all the experiments, the calcium alginate beads showed strong affinity for Cu. Similar results were obtained when accumulation by packed beads in columns was tested, but efficacy was higher if this design was used (beads with cells retain 80% of Cu introduced in the column). https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/203Nannochloropsisheavy metal accumulationalginate |
| spellingShingle | I Moreno-Garrido GA Codd GM Gadd LM Lubián Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae) Ciencias Marinas Nannochloropsis heavy metal accumulation alginate |
| title | Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae) |
| title_full | Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae) |
| title_fullStr | Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae) |
| title_full_unstemmed | Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae) |
| title_short | Cu and Zn accumulation by calcium alginate immobilized marine microalgal cells of Nannochloropsis gaditana (Eustigmatophyceae) |
| title_sort | cu and zn accumulation by calcium alginate immobilized marine microalgal cells of nannochloropsis gaditana eustigmatophyceae |
| topic | Nannochloropsis heavy metal accumulation alginate |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/203 |
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