Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp.
Microalgae have been immobilized in alginate matrixes for the ease of harvesting of the microalgae. However, not all microalgae thrive when immobilized. Immobilized cells are sensitive to the micro-environment in alginate matrixes. Hence, this study aims to improve the growth of immobilized cell...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2021
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| Online Access: | http://journalarticle.ukm.my/16909/ http://journalarticle.ukm.my/16909/1/11.pdf |
| _version_ | 1848814174421909504 |
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| author | Soo, Chen-Lin Hii, Yii-Siang |
| author_facet | Soo, Chen-Lin Hii, Yii-Siang |
| author_sort | Soo, Chen-Lin |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | Microalgae have been immobilized in alginate matrixes for the ease of harvesting of the microalgae. However, not
all microalgae thrive when immobilized. Immobilized cells are sensitive to the micro-environment in alginate matrixes.
Hence, this study aims to improve the growth of immobilized cells and also ammoniacal-nitrogen (NH4
+-N) removal by
adding growth medium in alginate beads during the immobilization process. Different strength of the Guillard’s f/2 medium
(0%, 30%, 50%, and 100%) was enriched in alginate beads inoculated with Nannochloropsis sp. The immobilized cells
were then cultivated in seawater with 1000 µM NH4
+-N as the sole nitrogen source. The growth and NH4
+-N uptake by
immobilized cells enriched with different strength of f/2 medium were compared. There were no significant differences on
specific growth rate and specific uptake rate of immobilized cells after nutrient enrichment in alginate beads. However,
maximum cells attained and maximum NH4
+-N removed increased when strength of f/2 medium enriched in alginate beads
was increased. Significantly higher maximum cells attained and maximum NH4
+-N removal were found in immobilized
cells enriched with half strength of f/2 medium than those without nutrient enrichment. The present study demonstrated
that nutrient enriched in alginate beads can be used by immobilized cells, and subsequently improves the performance
of immobilized cells in marine water treatment and production of microalgal biomass simultaneously. |
| first_indexed | 2025-11-15T00:29:53Z |
| format | Article |
| id | oai:generic.eprints.org:16909 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:29:53Z |
| publishDate | 2021 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:169092021-06-28T15:21:30Z http://journalarticle.ukm.my/16909/ Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. Soo, Chen-Lin Hii, Yii-Siang Microalgae have been immobilized in alginate matrixes for the ease of harvesting of the microalgae. However, not all microalgae thrive when immobilized. Immobilized cells are sensitive to the micro-environment in alginate matrixes. Hence, this study aims to improve the growth of immobilized cells and also ammoniacal-nitrogen (NH4 +-N) removal by adding growth medium in alginate beads during the immobilization process. Different strength of the Guillard’s f/2 medium (0%, 30%, 50%, and 100%) was enriched in alginate beads inoculated with Nannochloropsis sp. The immobilized cells were then cultivated in seawater with 1000 µM NH4 +-N as the sole nitrogen source. The growth and NH4 +-N uptake by immobilized cells enriched with different strength of f/2 medium were compared. There were no significant differences on specific growth rate and specific uptake rate of immobilized cells after nutrient enrichment in alginate beads. However, maximum cells attained and maximum NH4 +-N removed increased when strength of f/2 medium enriched in alginate beads was increased. Significantly higher maximum cells attained and maximum NH4 +-N removal were found in immobilized cells enriched with half strength of f/2 medium than those without nutrient enrichment. The present study demonstrated that nutrient enriched in alginate beads can be used by immobilized cells, and subsequently improves the performance of immobilized cells in marine water treatment and production of microalgal biomass simultaneously. Penerbit Universiti Kebangsaan Malaysia 2021-03 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/16909/1/11.pdf Soo, Chen-Lin and Hii, Yii-Siang (2021) Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. Sains Malaysiana, 50 (3). pp. 691-697. ISSN 0126-6039 https://www.ukm.my/jsm/malay_journals/jilid50bil3_2021/KandunganJilid50Bil3_2021.html |
| spellingShingle | Soo, Chen-Lin Hii, Yii-Siang Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. |
| title | Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. |
| title_full | Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. |
| title_fullStr | Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. |
| title_full_unstemmed | Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. |
| title_short | Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. |
| title_sort | nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized nannochloropsis sp. |
| url | http://journalarticle.ukm.my/16909/ http://journalarticle.ukm.my/16909/ http://journalarticle.ukm.my/16909/1/11.pdf |