碩士 / 中華科技大學 / 健康科技研究所在職專班 / 104 / Taiwan is a key area for algae farming. Current trend is to turn farmed algae to healthy food. However, aquaculture of green algae has faced bottlenecks in recent years due to severe climate change and serious environmental pollution. Original open-farming is often unable to maintain stable production. Although there are many publications on other bag-farming technologies, they cannot overcome two major problems: quantification and cost. The purpose of this study is to explore a quantifiable, low cost, safe and pollution-free technology with stable production, and find the best farming mode and lower the farming costs from the study. Bag-farming is one of the technologies which is capable of large production, stable yield and lowered costs currently. To understand the difference of the effect of different plastic bag-farming types, three different types of plastic bags, general circulation, horizontal circulation and vertical circulation, have been designed for farming. The algae were cultivated in outdoor environment and climate. Growth rates and pH values were measured and analyzed every 5 days. The results showed that, under three different climate conditions of global solar radiation, the growth of horizontal circulation one ceased after 5 days when the global solar radiation decreased with time. The general circulation and horizontal circulation ones were not affected, but the grow rates showed a decline trend. The growth rates of three cultivation methods were fast in the beginning when the global solar radiation was high, and their pH values increased to 8.0 on the fifth day. When the average global solar radiation was 5.6 MJ/㎡, the growth rates were substantially lower due to lower solar radiation. The horizontal circulation one was affected the most, and the vertical circulation one showed the highest growth. When the average global solar radiation was 9.3 MJ/㎡, the growth rates of three cultivation modes showed a positive trend due to higher solar radiation. Similarly, the vertical circulation had the best growth. There were no big differences between general circulation and horizontal circulation. When the average global solar radiation was the highest, 13.6 MJ/㎡, the vertical circulation also had the best growth condition, up to 0.2g per liter on the 15th day. The bag-farming, with controllable circulating space, gives green algae good growth space and safe cultivation environment and avoids contamination by alien organism. Carbon dioxide was introduced in this study which was able to reduce the carbon dioxide in the atmosphere, making a contribution to a friendly environment. In the future, mass production, automation and modulation can also be a development key point for commercialization.
| Identifer | oai:union.ndltd.org:TW/104CHIT1743005 |
| Date | January 2016 |
| Creators | HUANG,HSIANG-CHIN, 黃祥欽 |
| Contributors | CHEN,YU-PEI, 陳煜沛 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 68 |
Page generated in 0.0116 seconds