碩士 / 國立高雄第一科技大學 / 環境與安全衛生工程研究所 / 103 / Symbiotic of algae and bacteria is an important relationship, which would directly/indirectly influence for having a friendly water body. This relationship resulted mainly from electronic exchange and their carriers such as the nutrients of algae and bacteria. They often played a role of electronic donor. Some studies revealed that dimethyl sulfide (DMS) might be a precursor in their symbiotic. Previous study indicates that a Bacillus sp. and Clostridium sp.-rich bio-reagent could stimulate obviously the algae growth. In this study, the DMS was conducted to the algae culture with the bio-reagent for the observation of their relationship. For this purpose, 10 experiments were performed to measure the algae and bacteria using nitrate by the optical density according to a central composite experimental design.
The experimental results demonstrate that the DMS and the bio-reagent could stimulate the growth of algae and bacteria. The kinetic data also estimate that the growth rate of algae and bacteria increased and decreased as an increment of the DMS, respectively; while the bio-reagent under a constant. Of these expressions, the growth rate of bacteria was greater than that of algae when the DMS was smaller than 164 ppm. That is to say, the growth rate of bacteria was smaller than that of algae when the DMS was greater than 164 ppm. In addition, the growth rate of algae and bacteria increased as an increment of the bio-reagent while the DMS under a constant. The growth rate of algae would be greater than that of bacteria while the bio-reagent was greater than 760 ppm.
The duplicate experiment demonstrates that the pH decreased from 8.0 to around 4.0. The total organic and inorganic carbon increased with the culture day. During this culture, the strength of ammonium and nitrate appeared stability and fluctuations, respectively. These phenomena would be reasoned that the bacteria provided the bicarbonate/carbonate for the algae growth. The latter also offered the demand of the bacterial growth.
| Identifer | oai:union.ndltd.org:TW/103NKIT5519041 |
| Date | January 2015 |
| Creators | Bin-Ju Chen, 陳品儒 |
| Contributors | Jiunn-Jyi Lay, 賴俊吉 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 67 |
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