Substrate inhibition kinetics of phenol degradation by Pseudomonas fluorescence from steady state and wash-out data

α-Ketoglutarate substrate inhibition kinetics of hepatic glutamate dehydrogenase amination activity confers robust control over the ratio between glutamate and ammonium.

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Multiplicity patterns of activated-sludge with substrate-inhibition kinetics

Water Research ◽

10.1016/0043-1354(93)90159-f ◽

1993 ◽

Vol 27 (5) ◽

pp. 929-938 ◽

Cited By ~ 6

Author(s):

Moshe Sheintuch

Keyword(s):

Activated Sludge ◽

Substrate Inhibition ◽

Inhibition Kinetics ◽

Substrate Inhibition Kinetics ◽

Multiplicity Patterns

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Use of a Novel Algorithm to Determine Cyclic Steady State

ASEAN Journal of Chemical Engineering ◽

10.22146/ajche.50143 ◽

2006 ◽

Vol 6 (2) ◽

pp. 70 ◽

Cited By ~ 1

Author(s):

Luis E Razon

Keyword(s):

Steady State ◽

Transition Period ◽

Computing Time ◽

Substrate Inhibition ◽

Simple Algorithm ◽

Stable Steady State ◽

Stopping Criterion ◽

State Tests ◽

Substrate Inhibition Kinetics ◽

State Multiplicity

A simple algorithm originally proposed by Choong, Paterson and Scott (2002) was tested on a model of an isothermal controlled-cycled stirred tank reactor with substrate inhibition kinetics, (r = 1 ~c). In previous work, this reacting system had been shown to exhibit steady-state multiplicity. The transition period of this system to the stable steady state is sometimes characterized by very slow change followed by a very rapid convergence to the stable steady state. Tests of the Choong-Paterson-Scott algorithm showed that the feature, which prevents premature termination of the calculations prior to reaching the true steady state, is very useful for this system. However, tests of the stopping criterion showed that the other feature of reducing the computing time was not realized in this system.

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Kinetic of 4-Chlorophenols Biodegradation by Arthrobacter Chlorophenolicus A6

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.l1070.10812s19 ◽

2019 ◽

Vol 8 (12S) ◽

pp. 252-255

Keyword(s):

Maximum Rate ◽

Substrate Inhibition ◽

Priority Pollutants ◽

Inhibition Kinetics ◽

Us Epa ◽

Shake Flasks ◽

Substrate Inhibition Kinetics ◽

Arthrobacter Chlorophenolicus ◽

Biokinetic Parameters ◽

High Inhibition

Chlorophenols are listed as priority pollutants both by European community and US EPA. Biodegradation of pchlorophenol (4-CP) was investigated in batch shake flasks by Arthrobacter chlorophenolicus A6 at initial 4-CP concentrations between 25 to 350 mgl-1. The rate of 4-CP removal decreased with increasing initial 4-CP concentrations due to toxic effects on the microorganisms. The growth and biodegradation kinetic of the culture was evaluated. The batch growth profile of the A chlorophenolicus A6 followed substrate inhibition kinetics with the estimated biokinetic parameters of Ksi = 272 mgl-1, Ks = 65 mgl-1 for 4-CP respectively. High inhibition constant (KSI = 272 mg -l) with a KSI/KS ratio of 4.18 indicates superior 4-CP biodegradation potential of the A chlorophenolicus A6. The maximum rate of 4-CP degradation has been achieved at an optimum substrate concentration of Smax = (KSKSI)1/2 = (65×272)1/2 = 133 mgl−1.

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