摘要
以ＣＯ２为碳源工业化生产螺旋藻的优点是：向培养液中添加ＣＯ２的同时，实现了对ｐＨ值和碳源的调控，碳源利用率高，生产成本低．以ＣＯ２吸收速率、ＣＯ２吸收率、ＣＯ２利用率为指标，对“气泡法”、“气罩法”添加ＣＯ２的优缺点进行了综合分析和定量研究。“气罩法”ＣＯ２吸收速率是４３．５３ｍｍｏｌ／（ｍ２·ｍｉｎ），ＣＯ２吸收率是８５％，为满足１０ｇ／（ｍ２·ｄ）产量对碳源的需要，气罩面积与培养池面积的比值是１．５％（每天充气１０ｈ。使用孔径为４０～５０μｍ的微孔塑料管，并用“气泡法”添加ＣＯ２，ＣＯ２吸收率是６７．５％，应用于大规模生产，ＣＯ２利用率是６５．３％。由于气罩制造材料和内壁密集水珠的遮光作用，设置气罩后几乎损失了相同大小的培养面积，致使ＣＯ２吸收率为８５％的“气罩法”在经济效益上与ＣＯ２吸收率只有４０％的不产生遮光的其它ＣＯ２添加工艺相当。ＣＯ２吸收率为６７．５％的“气泡法”完全达到了实用化的程度，与利用ＮａＨＣＯ３相比，可以降低碳源成本８０％。
The advantage of using CO2 as carbon source to produce Spirulina is high carbon conversion ratio, low production cost and that both carbon and pH-value are regulated when CO2 is supplied. The advantage and disadvantage of CO2 supply by means of “bubbles”,“gasometer” were analysed and investigated in detail. In the case of “gasometer”,the CO2 conversion ratio is 85%,CO2 absorption rate is 43. 53% mmol/(m￣2·min),working area of 1.5%of the pond area is needed to meet the demand of carbon for the prodution of 10 g/(m￣2· d)(working 10 hours each day). The CO2 absorption efficiency of “bubbles” is 67.5% by adopting a plastic tube with pores of 40～50 μm in diameter on it's wall.Some culture area as much as that of the gasometer is lost due to the shadowing by the gasometer itself and the beads of water on the internal surface of gasometer,therefore,in economy,“gasometer”with CO2 absorption efficiency of 85% is the same as other technique with CO2 absorption efficiency of 40% but not shadowing. The “bubbles”technique with CO2 absorption efficiency of 67.5% fully meets the applied purpose, the cost of carbon is reduced by 80% compared with that NaHCO3 is used as carbon source.
出处
《武汉植物学研究》
CSCD
1996年第4期349-356,共8页
Journal of Wuhan Botanical Research
关键词
螺旋藻
工业化生产
二氧化碳
碳源
CO_2 absorption rate,CO_2 absorption efficience,Bubbles, Gasometer,Spirulina
