Sulfide toxicity kinetics of a uasb reactor

Brazilian Journal of Chemical Engineering

D. R. Paula Jr.²  E. Foresti¹ 

[1] ,University of Campinas School of Agriculture Engineering Campinas SP ,Brasil

关键词: UASB reactor;    Kinetics;    Inhibition coefficient;    Sulfide toxicity;   

DOI  :  10.1590/S0104-66322009000400005

来源: SciELO

【 摘 要 】

The effect of sulfide toxicity on kinetic parameters of anaerobic organic matter removal in a UASB (up-flow anaerobic sludge blanket) reactor is presented. Two lab-scale UASB reactors (10.5 L) were operated continuously during 12 months. The reactors were fed with synthetic wastes prepared daily using glucose, ammonium acetate, methanol and nutrient solution. One of the reactors also received increasing concentrations of sodium sulfide. For both reactors, the flow rate of 16 L.d-1 was held constant throughout the experiment, corresponding to a hydraulic retention time of 15.6 hours. The classic model for non-competitive sulfide inhibition was applied to the experimental data for determining the overall kinetic parameter of specific substrate utilization (q) and the sulfide inhibition coefficient (Ki). The application of the kinetic parameters determined allows prediction of methanogenesis inhibition and thus the adoption of operating parameters to minimize sulfide toxicity in UASB reactors.

【 授权许可】

CC BY   
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