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首页> 外文期刊>Bioprocess and Biosystems Engineering >Comparison of two mathematical models for correlating the organic matter removal efficiency with hydraulic retention time in a hybrid anaerobic baffled reactor treating molasses
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Comparison of two mathematical models for correlating the organic matter removal efficiency with hydraulic retention time in a hybrid anaerobic baffled reactor treating molasses

机译：混合厌氧折流板反应器处理糖蜜的有机物去除效率与水力停留时间相关的两种数学模型的比较

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摘要

A modelling of the anaerobic digestion process of molasses was conducted in a 70-L multistage anaerobic biofilm reactor or hybrid anaerobic baffled reactor with six compartments at an operating temperature of 26 ℃. Five hydraulic retention times (6, 16, 24, 72 and 120 h) were studied at a constant influent COD concentration of 10,000 mg/L. Two different kinetic models (one was based on a dispersion model with first-order kinetics for substrate consumption and the other based on a modification of the Young equation) were evaluated and compared to predict the organic matter removal efficiency or fractional conversion. The first-order kinetic constant obtained with the dispersion model was 0.28 h~ the Peclet dispersion number being 45, with a mean relative error of 2%. The model based on the Young equation predicted the behaviour of the reactor more accurately showing deviations lower than 10% between the theoretical and experimental values of the fractional conversion, the mean relative error being 0.9% in this case.
机译：糖蜜厌氧消化过程的模型是在70升多级厌氧生物膜反应器或带有六个隔室的混合厌氧折流板反应器中在26℃的操作温度下进行的。在10,000 mg / L的恒定进水COD浓度下，研究了五个水力停留时间（6、16、24、72和120 h）。评估并比较了两个不同的动力学模型（一个是基于具有一阶动力学的底物消耗的一阶动力学的分散模型，另一个是基于Young方程的修正），以预测有机物去除效率或分数转化率。色散模型获得的一级动力学常数为0.28 h〜Peclet色散数为45，平均相对误差为2％。基于Young方程的模型预测反应器的行为更准确，表明分数转化的理论值和实验值之间的偏差小于10％，在这种情况下，平均相对误差为0.9％。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2012年第3期|p.389-397|共9页
  • 作者

    S. Ghaniyari-Benis; A. Martin; R. Borja; M. A. Martin; N. Hedayat;

  • 作者单位

    Department of Chemical and Petroleum Engineering, Sharif University of Technology (SUT), P.O. Box 11365-8639, Tehran, Iran;

    Departamento de Quimica Inorganica e Ingenieria Quimica, Facultad de Ciencias, Campus Universitario de Rabanales, Edificio C-3, Ctra. Madrid-Cadiz, Km 396, 14071 Cordoba, Spain;

    Instituto de la Grasa (C.S.I.C), Avda. Padre Garcia Tejero, 4, 41012 Sevilla, Spain;

    Departamento de Quimica Inorganica e Ingenieria Quimica, Facultad de Ciencias, Campus Universitario de Rabanales, Edificio C-3, Ctra. Madrid-Cadiz, Km 396, 14071 Cordoba, Spain;

    School of Chemical Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran;

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  • 正文语种 eng
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  • 关键词

    anaerobic digestion; modelling; hydraulic retention time; organic matter removal efficiency; hybrid anaerobic baffled reactor;

    机译：厌氧消化;造型;水力停留时间;有机物去除效率;混合厌氧折流板反应器;

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