Light irradiance and spectral distribution effects on cyanobacterial hydrogen production
Productivity; Different lights; Energy source; Heterocystous cyanobacterium; Hydrogen production rate; Light irradiances; Light spectrum; Photosynthetic productivity; Spectral distribution; Hydrogen production; accumulation; cyanobacterium; flight; hydrogen; light effect; photosynthesis; spectrum; C...
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2023
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my.uniten.dspace-227882023-05-29T14:12:16Z Light irradiance and spectral distribution effects on cyanobacterial hydrogen production Salleh S.F. Kamaruddin A. Uzir M.H. Mohamed A.R. Shamsuddin A.H. 56367343500 6507845299 26536950000 7402739263 35779071900 Productivity; Different lights; Energy source; Heterocystous cyanobacterium; Hydrogen production rate; Light irradiances; Light spectrum; Photosynthetic productivity; Spectral distribution; Hydrogen production; accumulation; cyanobacterium; flight; hydrogen; light effect; photosynthesis; spectrum; Cyanobacteria Light is an essential energy source for photosynthetic cyanobacteria. Changes in both light irradiance and spectral distribution will affect their photosynthetic productivity. Compared to the light irradiance, little investigations have been carried out on the effect of light spectra towards cyanobacterial hydrogen production. Hence, this work aims to investigate the effects of both light quantity and quality on biohydrogen productivity of heterocystous cyanobacterium, A.variabilis. Under white light condition, the highest hydrogen production rate of 31 ?mol H2 mg chl a -1 h-1 was achieved at 70 ?E m-2 s-1. When the experiment was repeated at the same light irradiance but different light spectra of blue, red and green, the accumulations of hydrogen were significantly lower than the white light except for blue light. As the light irradiance was increased to 350 ?E m-2 s-1, the accumulated hydrogen under the blue light doubled that of the white light. Besides that, an unusual prolongation of the hydrogen production up to 120 h was observed. The results obtained suggest that blue light could be the most desirable light spectrum for cyanobacterial hydrogen production. Final 2023-05-29T06:12:16Z 2023-05-29T06:12:16Z 2016 Conference Paper 10.1088/1755-1315/32/1/012046 2-s2.0-84966549736 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966549736&doi=10.1088%2f1755-1315%2f32%2f1%2f012046&partnerID=40&md5=14efb39bc74a6ca8307073f2eaeaf229 https://irepository.uniten.edu.my/handle/123456789/22788 32 1 12046 All Open Access, Bronze Institute of Physics Publishing Scopus |
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| description |
Productivity; Different lights; Energy source; Heterocystous cyanobacterium; Hydrogen production rate; Light irradiances; Light spectrum; Photosynthetic productivity; Spectral distribution; Hydrogen production; accumulation; cyanobacterium; flight; hydrogen; light effect; photosynthesis; spectrum; Cyanobacteria |
| author2 |
56367343500 |
| author_facet |
56367343500 Salleh S.F. Kamaruddin A. Uzir M.H. Mohamed A.R. Shamsuddin A.H. |
| format |
Conference Paper |
| author |
Salleh S.F. Kamaruddin A. Uzir M.H. Mohamed A.R. Shamsuddin A.H. |
| spellingShingle |
Salleh S.F. Kamaruddin A. Uzir M.H. Mohamed A.R. Shamsuddin A.H. Light irradiance and spectral distribution effects on cyanobacterial hydrogen production |
| author_sort |
Salleh S.F. |
| title |
Light irradiance and spectral distribution effects on cyanobacterial hydrogen production |
| title_short |
Light irradiance and spectral distribution effects on cyanobacterial hydrogen production |
| title_full |
Light irradiance and spectral distribution effects on cyanobacterial hydrogen production |
| title_fullStr |
Light irradiance and spectral distribution effects on cyanobacterial hydrogen production |
| title_full_unstemmed |
Light irradiance and spectral distribution effects on cyanobacterial hydrogen production |
| title_sort |
light irradiance and spectral distribution effects on cyanobacterial hydrogen production |
| publisher |
Institute of Physics Publishing |
| publishDate |
2023 |
| _version_ |
1806427587274080256 |