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

Stanojević, Miroslav; Sevaljevic, Mirjana; Simić, Stojan; Ševaljević, Miladin

doi:10.1080/19443994.2013.779420

Cited by 2 publications

(3 citation statements)

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“…11) Table 7 Energy efficiency of oxygen introduction, E e [13], oxygen desorption over potential g desO2, V, relative electric permittivity, e r of hydrated and dehydrated electrons in the transition processes: g desO2, V according to Eq. (8)-relative electric permittivity corresponding to hydrogen isobaric overpotential acc.…”

Section: The Diagnostics Of Oxygen Maximal Striping Potentialmentioning

confidence: 99%

“…Experimental results [1,[11][12][13] applied to the study of oxygen electric power in active transport and passive relaxation processes Experimental work was performed using experimental installation (see sheme in Fig. 1), for batch working conditions and varying air flow of 2, 6, and 10 m 3 /h at 1 and 2 m water level in the total volume of water which was 490 and 980 L [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Diagnostics of oxygen chemisorptions stationary, Ws and equilibrium energy levels, W ⁄ was carried out (see Table 4) depending on the molar energy, W h , previously determined on the basis of the slope of the linear dependence of energy efficiency of oxygen transport Y = E e´, g kWh À1 on oxygen volumetric and drift rate constants ratio (see Fig. 2) [13].…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic diagnostics of the depolarization overpotential and electron temperatures of contact surfaces in aerated refinery wastewater

Simić¹,

Sevaljevic

Stanojević

et al. 2014

Desalination and Water Treatment

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A B S T R A C TThe energy balance model is applied to aeration regimes at 1 and 2 m high water columns at the same membrane air distributor, with aim to carry out the diagnostics of depolarization potential and electron temperatures of contact surfaces in aerated refinery waste water, without and with added 5 and 10 mg/l waste motor oil. Diagnostics is carried out of water induced vertical flow velocity, hydrogen and oxygen reversible depolarization overpotentials, electron temperatures, and relative electric permittivity of water adsorption and condensation active centers. The activation energies are determined on the basis of Arrhenius dependence between the oxygen transport rate constants and the phase temperature and of oxygen electrons titrations rate constants and electron temperatures. The linear functional dependence of oxygen solubility degree on hydrogen equilibrium potential is obtained with strong correlation coefficient (R 2 = 0.9745), after the balance is achieved of the sum of chemisorbed oxygen energy in stationary and equilibrium states with sum of evolved hydrogen energy in equilibrium and stationary energy states. It was found that thermodynamic history of the first exothermic isobaric or isochoric hydrogen evolution step is an important criterion in choosing an optimized regime.

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Section: The Diagnostics Of Oxygen Maximal Striping Potentialmentioning

confidence: 99%