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首页> 外文期刊>Bioprocess and Biosystems Engineering >Modelling and simulation of steady-state phenol degradation in a pulsed plate bioreactor with immobilised cells of Nocardia hydrocarbonoxydans
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Modelling and simulation of steady-state phenol degradation in a pulsed plate bioreactor with immobilised cells of Nocardia hydrocarbonoxydans

机译：固定有诺卡氏烷烃的脉冲板生物反应器中稳态苯酚降解的建模和模拟

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摘要

A novel bioreactor called pulsed plate bioreactor (PPBR) with cell immobilised glass particles in the interplate spaces was used for continuous aerobic biodeg-radation of phenol present in wastewater. A mathematical model consisting of mass balance equations and accounting for simultaneous external film mass transfer, internal diffusion and reaction is presented to describe the steady-state degradation of phenol by Nocardia hydrocarbonoxydans (Nch.) in this bioreactor. The growth of Nch. on phenol was found to follow Haldane substrate inhibition model. The biokinetic parameters at a temperature of 30 ± 1 ℃ and pH at 7.0 ± 0.1 are μm = 0.5397 h~(-1), K_s = 6.445 mg/L and K_1 = 855.7 mg/L. The mathematical model was able to predict the reactor performance, with a maximum error of 2% between the predicted and experimental percentage degradations of phenol. The biofilm internal diffusion rate was found to be the slowest step in biodegradation of phenol in a PPBR.
机译：一种新型的生物反应器，称为脉冲板生物反应器（PPBR），在板间空间中具有固定细胞的玻璃颗粒，用于废水中存在的苯酚的连续好氧生物降解。提出了一个由质量平衡方程组成的数学模型，该模型解释了同时发生的外部膜质量转移，内部扩散和反应，以描述该生物反应器中诺卡氏烷烃氧化氮（Nch。）对苯酚的稳态降解。 Nch的成长。发现苯酚对苯酚的吸附遵循Haldane底物抑制模型。温度为30±1℃，pH为7.0±0.1时的生物动力学参数为μm= 0.5397 h〜（-1），K_s = 6.445 mg / L，K_1 = 855.7 mg / L。该数学模型能够预测反应器性能，在预测的和实验的苯酚降解百分比之间最大误差为2％。发现生物膜内部扩散速率是PPBR中苯酚生物降解的最慢步骤。

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