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小球藻光生物反应器脱除空气中二氧化碳的研究

CO₂ removal from air by means of a chlorella-based photobioreactor

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【Author】 GAO Chunyan~1, CHENG Lihua~1, ZHANG Lin~1, FENG Jianyue~2, CHEN Huanlin~1(1.College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China; 2.The Center of Analysis and Test, Zhejiang University, Hangzhou 310027,China)

【机构】浙江大学材化学院；浙江大学分析测试中心；浙江大学材化学院杭州310027；杭州310027；杭州310027；

【摘要】采用自制的光生物反应器,研究了不同条件对小球藻脱除空气中CO2效果的影响.光生物反应器为圆柱形有机玻璃容器,底面积0.0154m2,高0.2m,容积为3L,反应器内小球藻藻体干重约为7.2g.实验结果表明,用小球藻来固定CO2不仅能脱除通入气体中的CO2,而且可以促进小球藻生长.通入气体的流量和CO2浓度对CO2的脱除率有很大影响.在适宜的实验条件下(通入气体流速为0.6L/min、CO2浓度约1%、温度25~30℃、光强3500lux、pH9.5~8.5),入口气体中CO2约有50%被脱除,该光生物反应器脱除CO2的能力约为0.118g/(L.h).可见利用小球藻光生物反应器固定CO2具有较好的脱除效果,值得进一步研究.更多还原

【Abstract】 The effects of different conditions on CO₂ removal from air by means of a self-made chlorella-based photobioreactor were investigated.The cylindrical photobioreactor was made of PMMA.It has a basal area of 0.015 4 m²,height of 0.2 m,volume of 3 L,and chlorella dry weight of 7.2 g.It is shown that CO₂ in air can not only be removed by chlorella,but also promote the growth of chlorella.The inlet gas flux and CO₂ concentration had remarkable effect of the removal rate of CO₂.Under the optimum operating conditions including air flow rate of 0.6 L/min,inlet gas of 0.1% CO₂,light intensity of 3 500 lux,temperature of 25～30 ℃,and pH 9.5～8.5,the CO₂ removal rate of the experimental photobioreactor was 0.118 g/（L·h）.It is obvious that the photobioreactor showed a desirable CO₂ removal result.更多还原