反硝化
反硝化细菌
硫黄
化学
亚硝酸盐
硝酸盐
硫酸盐
水解
灵敏度(控制系统)
生物量(生态学)
限制
无机化学
环境化学
氮气
有机化学
生态学
工程类
生物
机械工程
电子工程
作者
Anastasiia Kostrytsia,Stefano Papirio,Maria Rosaria Mattei,Luigi Frunzo,Piet N.L. Lens,Giovanni Esposito
摘要
Abstract A local sensitivity analysis was performed for a chemically synthesized elemental sulfur (S0)-based two-step denitrification model, accounting for nitrite (NO2−) accumulation, biomass growth and S0 hydrolysis. The sensitivity analysis was aimed at verifying the model stability, understanding the model structure and individuating the model parameters to be further optimized. The mass specific area of the sulfur particles (a*) and hydrolysis kinetic constant (k1) were identified as the dominant parameters on the model outputs, i.e. nitrate (NO3−), NO2− and sulfate (SO42−) concentrations, confirming that the microbially catalyzed S0 hydrolysis is the rate-limiting step during S0-driven denitrification. Additionally, the maximum growth rates of the denitrifying biomass on NO3− and NO2− were detected as the most sensitive kinetic parameters.
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