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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 cells an...

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Main Authors: Chen-lin soo, Yii-Siang Hii
Format: Article
Language:English
English
Published: UKM 2021
Subjects:
TP1-1185 Chemical technology
TP200-248 Chemicals: Manufacture, use, etc.
Online Access:https://eprints.ums.edu.my/id/eprint/36443/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/36443/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/36443/
http://dx.doi.org/10.17576/jsm-2021-5003-11
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spelling my.ums.eprints.364432023-08-21T07:02:34Z https://eprints.ums.edu.my/id/eprint/36443/ Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp Chen-lin soo Yii-Siang Hii TP1-1185 Chemical technology TP200-248 Chemicals: Manufacture, use, etc. 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 UKM 2021-03 Article NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/36443/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/36443/2/FULL%20TEXT.pdf Chen-lin soo and Yii-Siang Hii (2021) Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp. Sains Malaysiana, 50. pp. 691-697. ISSN 01266039 http://dx.doi.org/10.17576/jsm-2021-5003-11
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic TP1-1185 Chemical technology
TP200-248 Chemicals: Manufacture, use, etc.
spellingShingle TP1-1185 Chemical technology
TP200-248 Chemicals: Manufacture, use, etc.
Chen-lin soo
Yii-Siang Hii
Nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized Nannochloropsis sp
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
format Article
author Chen-lin soo
Yii-Siang Hii
author_facet Chen-lin soo
Yii-Siang Hii
author_sort Chen-lin soo
title 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_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_sort nutrient enrichment in alginate bead for enhancement of cell growth and ammonium removal by alginate immobilized nannochloropsis sp
publisher UKM
publishDate 2021
url https://eprints.ums.edu.my/id/eprint/36443/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/36443/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/36443/
http://dx.doi.org/10.17576/jsm-2021-5003-11
_version_ 1775623863540908032
score 13.211869

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