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微藻在不同氨氮条件下固定CO2耦合净化废水实验

孔佳,  沈伯雄,  孔文文,  单凯旋

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文章导航 > 环境工程  > 2022 >  40(5): 9-17,94
孔佳, 沈伯雄, 孔文文, 单凯旋. 微藻在不同氨氮条件下固定CO2耦合净化废水实验[J]. 环境工程, 2022, 40(5): 9-17,94. doi: 10.13205/j.hjgc.202205002
引用本文: 孔佳, 沈伯雄, 孔文文, 单凯旋. 微藻在不同氨氮条件下固定CO2耦合净化废水实验[J]. 环境工程, 2022, 40(5): 9-17,94. doi: 10.13205/j.hjgc.202205002
shu
KONG Jia, SHEN Bo-xiong, KONG Wen-wen, DAN Kai-xuan. EXPERIMENTAL STUDY ON CO2 FIXATION COUPLED WITH WASTEWATER PURIFICATION BY CHLORELLA VULGARIS UNDER DIFFERENT AMMONIUM CONCENTRATIONS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 9-17,94. doi: 10.13205/j.hjgc.202205002
Citation: KONG Jia, SHEN Bo-xiong, KONG Wen-wen, DAN Kai-xuan. EXPERIMENTAL STUDY ON CO2 FIXATION COUPLED WITH WASTEWATER PURIFICATION BY CHLORELLA VULGARIS UNDER DIFFERENT AMMONIUM CONCENTRATIONS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 9-17,94. doi: 10.13205/j.hjgc.202205002
shu

微藻在不同氨氮条件下固定CO2耦合净化废水实验

doi: 10.13205/j.hjgc.202205002

  • 1. 河北工业大学 能源与环境工程学院, 天津 300401;

  • 2. 天津市清洁能源利用与污染物控制重点实验室, 天津 300401;

  • 3. 河北工业大学 化工学院, 天津 300401

基金项目: 

河北省重点研发计划项目(20373701D)

国家自然科学基金区域创新发展联合基金(U20A20302)

河北省自然科学基金(E2020202021)

天津市生态环境重大专项(19ZXSZSN00050,19ZXSZSN00070)

详细信息
    作者简介:

    孔佳(1996-),女,硕士研究生,主要从事微藻固碳及净化废水研究。1474678345@qq.com

    通讯作者:

    沈伯雄(1971-),男,教授,博导,主要从事固体废物的资源化和大气污染控制研究。shenbx@hebut.edu.cn

    孔文文(1990-),女,讲师,主要从事微藻固碳及净化废水研究。2019914@hebut.edu.cn

EXPERIMENTAL STUDY ON CO2 FIXATION COUPLED WITH WASTEWATER PURIFICATION BY CHLORELLA VULGARIS UNDER DIFFERENT AMMONIUM CONCENTRATIONS

  • 1. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China;

  • 2. Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, Tianjin 300401, China;

  • 3. School of Chemical Engineering, Hebei University of Technology, Tianjin 300401, China

    摘要
  • 摘要: 为探究小球藻同步固定CO2、净化废水及生产蛋白质的潜力,实验研究不同氨氮浓度(30,60,90 mg/L NH4Cl)和CO2体积分数(0.038%和10%)对小球藻(Chlorella vulgaris)生长、固碳、氮磷营养盐去除及蛋白质生产的影响,并将Logistic方程与改进的Monod方程相结合,描述小球藻比生长速率与氮、磷营养盐的关系。结果表明:10% CO2组生物量(380.16~499.52 mg/L)是0.038% CO2组生物量(44.73~120.00 mg/L)的3.54~8.30倍,同时,10% CO2组中氨氮和磷酸盐消耗速率明显高于0.038% CO2组。小球藻比生长速率、固碳速率、蛋白质含量均与生物量呈正相关(R2≥0.83,P<0.05),且在10% CO2和60 mg/L NH4Cl条件下获得最大值,分别为0.21 d-1、42.62 mg/(L·d)和228.43 mg/L。此外,拟合结果显示Logistic方程与改进的Monod方程联合应用可较好地描述小球藻的生长过程(R2=0.39~0.96),且10% CO2条件下的营养盐更易被小球藻吸收。实验结果可为微藻同步固定CO2、净化废水及副产物(如蛋白质)生产的应用提供理论参考。
    Abstract: To explore the potential of Chlorella vulgaris(C. vulgaris) in fixing CO2, purifying wastewater and producing protein simultaneously, the effects of different ammonium concentrations(30 mg/L, 60 mg/L, 90 mg/L NH4Cl) and CO2 concentrations(0.038% and 10%) on the growth, CO2 fixation, nutrients removal and protein production of C. vulgaris were studied. The combination of Logistic function and the modified Monod function was also used to describe the relationship between C. vulgaris specific growth rate and concentration of ammonium(NH+4-N) and phosphate(PO3-4-P), respectively.Resultsshowed that the biomass of 10% CO2 group(380.16~499.52 mg/L) was 3.54~8.30 times that of 0.038% CO2 group(44.73~120.00 mg/L). Meanwhile, the consumption rates of ammonium and phosphate in the 10% CO2 group were significantly higher than those in the 0.038% CO2 group. Correlation analysis showed that specific growth rate, carbon fixation rate, protein were all positively correlated with C. vulgaris biomass(R2>0.86, P<0.05). With 10% CO2 and 60 mg/L NH4Cl, the maximum values of specific growth rate, carbon fixation rate, and protein were 0.21 d-1, 42.62 mg/(L·d), and 228.43 mg/L, respectively. In addition, the fitting results indicated that the combination of Logistic function and the modified Monod function could well describe C. vulgaris growth(correlation coefficient R2 is 0.39~0.96), and nutrients were more easily utilized by C. vulgaris at 10% CO2. This experiment could provide a theoretical reference for fixing CO2, purifying wastewater and producing protein simultaneously by microalgae.
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  • 收稿日期:  2021-07-06
  • 网络出版日期:  2022-07-02

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