野生小球藻生物柴油制备工艺的优化研究
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摘要
文章开展了以野生小球藻为原料制备生物柴油的研究,首先分析比较了不同预处理方法的破壁效果,然后利用正交试验与神经网络预测相结合的方法,分析并优化了小球藻生物柴油的制备工艺,最后采用测量和计算的方法,分析了制备的生物柴油的理化特性。研究结果表明:超声波震荡和研磨相结合的方法的预处理效果最好;人工神经网络模型优化后的最佳制备工艺条件为甲醇用量为40 mL,浓硫酸用量为1.7 mL,反应温度为55℃,反应时间为6 h,搅拌速度为720 r/min,在此条件下,小球藻生物柴油的产率可达2.6%;制备的生物柴油的理化特性与0#车用柴油接近,但热值略低。
In this paper, the preparation of biodiesel from wild Chlorella vulgaris was studied.Firstly, the effects of different pretreatment methods were analyzed and compared. Then the preparation process of Chlorella vulgaris biodiesel was analyzed and optimized by means of orthogonal test and neural network prediction. Finally, the physical and chemical properties of biodiesel were analyzed by means of measurement and calculation. The results show that the pretreatment effect of ultrasonic shock and grinding is better. The optimum preparation conditions of artificial neural network model were as follows:Methanol 40 m L, concentrated sulfuric acid 1.7 m L,reaction temperature 55 ℃, reaction time 6 h, stirring speed 720 r/min. Under these conditions,the yield of Chlorella vulgaris biodiesel could reach 2.6%. The physical and chemical properties of the prepared biodiesel are close to those of 0#vehicle diesel, but the calorific value is slightly lower.
In this paper, the preparation of biodiesel from wild Chlorella vulgaris was studied.Firstly, the effects of different pretreatment methods were analyzed and compared. Then the preparation process of Chlorella vulgaris biodiesel was analyzed and optimized by means of orthogonal test and neural network prediction. Finally, the physical and chemical properties of biodiesel were analyzed by means of measurement and calculation. The results show that the pretreatment effect of ultrasonic shock and grinding is better. The optimum preparation conditions of artificial neural network model were as follows:Methanol 40 m L, concentrated sulfuric acid 1.7 m L,reaction temperature 55 ℃, reaction time 6 h, stirring speed 720 r/min. Under these conditions,the yield of Chlorella vulgaris biodiesel could reach 2.6%. The physical and chemical properties of the prepared biodiesel are close to those of 0#vehicle diesel, but the calorific value is slightly lower.
引文
[1]缪晓玲,吴庆余.微藻生物质可再生能源的开发利用[J].可再生能源,2003(3):13-16.
[2]陈五花,王业飞,丁名臣,等.棕榈油生物柴油低温流动性的改进及其对氧化稳定性的影响[J].可再生能源,2017,35(5):639-644.
[3] Sharma Y C,Singh V. Microalgal biodiesel:A possible solution for India's energy security[J].Renewable&Sustainable Energy Reviews,2017,67:72-88.
[4]段敏.小球藻制备生物柴油的试验和优化工艺研究[D].杭州:浙江大学,2011.
[5]毕生雷,张成明,郑世文,等.异养小球藻原料直接制备生物柴油的研究[J].中国油脂,2016,41(10):48-52.
[6]徐玉福,俞辉强,朱利华,等.小球藻粉水热催化液化制备生物油[J].农业工程学报,2012,28(19):194-199.
[7] Marwan, Suhendrayatna, Indarti E. Preparation of biodiesel from microalgae and palm oil by direct transesterification in a batch microwave reactor[J].Journal of Physics:Conference Series,2015,622(1):012040.
[8] Hamed Mohamadzadeh Shirazi,Javad Karimi-Sabet,Cyrus Ghotbi. Biodiesel production from Spirulina microalgae feedstock using direct transesterification near supercritical methanol condition[J].Bioresource Technology,2017,239:378-386.
[9] Sharma A K,Sahoo P K,Singhal S,et al. Exploration of upstream and downstream process for microwave assisted sustainable biodiesel production from microalgae Chlorella vulgaris[J].Bioresource Technology,2016,216:793-800.
[10] Dianursanti,Delaamira M,Bismo S,et al. Effect of reaction temperature on biodiesel production from Chlorella vulgaris using CuO/Zeolite as heterogeneous catalyst[J].IOP Conference Series:Earth and Environmental Science,2017,55(1):12-33.
[11]陈伟根,奚红娟,苏小平,等.广义回归神经网络在变压器绕组热点温度预测中的应用[J].高电压技术,2012,38(1):16-21.
[12]邓春芳,崔岩,成家杨.溶藻菌破碎微拟球藻细胞及其对油脂提取效果的影响研究[J].可再生能源,2017,35(11):1581-1587.
[13] Bose P K. Empirical approach for predicting the cetane number of biodiesel[J].International Journal of Automotive Technology,2009,10(4):421-429.
[14] GB 19147-2016,车用柴油[S].
[15] GB 25199-2017,B5柴油[S].
[2]陈五花,王业飞,丁名臣,等.棕榈油生物柴油低温流动性的改进及其对氧化稳定性的影响[J].可再生能源,2017,35(5):639-644.
[3] Sharma Y C,Singh V. Microalgal biodiesel:A possible solution for India's energy security[J].Renewable&Sustainable Energy Reviews,2017,67:72-88.
[4]段敏.小球藻制备生物柴油的试验和优化工艺研究[D].杭州:浙江大学,2011.
[5]毕生雷,张成明,郑世文,等.异养小球藻原料直接制备生物柴油的研究[J].中国油脂,2016,41(10):48-52.
[6]徐玉福,俞辉强,朱利华,等.小球藻粉水热催化液化制备生物油[J].农业工程学报,2012,28(19):194-199.
[7] Marwan, Suhendrayatna, Indarti E. Preparation of biodiesel from microalgae and palm oil by direct transesterification in a batch microwave reactor[J].Journal of Physics:Conference Series,2015,622(1):012040.
[8] Hamed Mohamadzadeh Shirazi,Javad Karimi-Sabet,Cyrus Ghotbi. Biodiesel production from Spirulina microalgae feedstock using direct transesterification near supercritical methanol condition[J].Bioresource Technology,2017,239:378-386.
[9] Sharma A K,Sahoo P K,Singhal S,et al. Exploration of upstream and downstream process for microwave assisted sustainable biodiesel production from microalgae Chlorella vulgaris[J].Bioresource Technology,2016,216:793-800.
[10] Dianursanti,Delaamira M,Bismo S,et al. Effect of reaction temperature on biodiesel production from Chlorella vulgaris using CuO/Zeolite as heterogeneous catalyst[J].IOP Conference Series:Earth and Environmental Science,2017,55(1):12-33.
[11]陈伟根,奚红娟,苏小平,等.广义回归神经网络在变压器绕组热点温度预测中的应用[J].高电压技术,2012,38(1):16-21.
[12]邓春芳,崔岩,成家杨.溶藻菌破碎微拟球藻细胞及其对油脂提取效果的影响研究[J].可再生能源,2017,35(11):1581-1587.
[13] Bose P K. Empirical approach for predicting the cetane number of biodiesel[J].International Journal of Automotive Technology,2009,10(4):421-429.
[14] GB 19147-2016,车用柴油[S].
[15] GB 25199-2017,B5柴油[S].