Thermodynamic study of the aeration kinetic in treatment of refinery waste water in bio-aeration tanks

Simić²,

Ševaljević³

2012

A B S T R AC TElectro-chemical potentials of adsorbed hydrogen on active centers could help energy effi ciency of oxygen transport in the aerated saturated refi nery wastewater to be optimized. In stationary regime, by using of the same membrane diffuser, the true understanding of the spontaneous fastest parallel exchange of electrons by Boltzmann collisions and slowest oxygen mass diffusion transport by adsorption can be attained. This paper presents diagnostic of electrons density in the gas bubbles in aerated saturated refi nery wastewater, according to the criteria of partial local thermodynamic equilibrium (PLTE). By the different stationary air fl ows, different water tank height and different motor oil content it was obtained that water entropy driven electrons density transport through the monolayer of the adsorbed air bubble controls energy effi ciency of oxygen transport.

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Section: Determination Of Technical Indicators Of Examined Aeration Rsupporting

confidence: 69%

Section: Methodsmentioning

confidence: 99%

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Thermodynamic diagnostic of electrons densities in gas bubbles in aerated saturated refinery wastewater

Simić²,

Ševaljević³

2012

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“…Previously determined oxygen adsorption rate constants [3] enable in this paper desorption rate constant to be calculated on the basis of oxygen adsorption equilibrium constants after chemical potentials, l in contact surface between gas and liquid phase achieve equilibrium value:…”

Section: Relationship Between Oxygen Monolayer Adsorption Heat To Lanmentioning

confidence: 99%

“…The intention of this paper is to examine water entropy-driven electrochemical relaxation processes, on the basis of experimental data obtained in previous papers [1][2][3][4], depending on aeration regimes and membrane distributor characteristics.…”

Section: Introductionmentioning

confidence: 99%

Water entropy-driven electrochemical relaxation of dissolved oxygen in aerated refinery wastewater

Stanojević

Simić³

et al. 2014

A B S T R A C TThe results obtained in this paper show dissolved oxygen monolayer chemisorptions in gas bubbles in aerated and saturated refinery wastewater is water entropy-driven relaxation processes. Dissolved oxygen and hydrogen electrons affinity keep constant liquid water molecules entropy. In the time period of water molecules crystallization on water input, or volatilization on air output on active adsorption or condensation nucleuses depending on aeration regimes, oxygen adsorption heat keeping constant liquid water entropy enabling coupling with positive or negative hydrated hydrides entropy change. The relationship between oxygen monolayer adsorption heat to Langmuir adsorption isotherm and oxygen diffusion transfer energy after saturation time are found on the basis of previously obtained experimentally data (temperatures and stationary oxygen concentrations). In this paper, the energy efficiency depending on oxygen entropy level and oxygen total energy level between drift and saturation time period is also examined.

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Influence of the water height in aeration regimes with the same membrane diffuser on technical characteristics of aeration system

Stanojević

Simić³

et al. 2013