Ronald W. Missen’s scientific contributions

... The Ha represents the ratio between the reaction rate in the liquid phase and the physical mass transfer rates (Levenspiel, 1999). Depending on the value assumed by the Hatta number, we can have a very slow kinetic regime (Ha <0.3, reaction occurring entirely in the liquid bulk), a very fast kinetic regime (Ha >3, reaction occurring entirely in the liquid film) or an intermediate regime (reaction occurring both in the bulk and in the film) (Charpentier, 1981;Missen et al., 1999;Zarzycki and Chacuk, 1993). Once the kinetic regime has been determined, to quantify the effects of a chemical reaction in the liquid phase, the Enhancement Factor (E L ) is recommended in several textbooks and papers available in the literature (Charpentier, 1981;Flagiello et al., 2023a;Levenspiel, 1999;Missen et al., 1999;Zarzycki and Chacuk, 1993). ...

Reference:

Determination of the gas-liquid reaction kinetic for sulfur dioxide absorption in sodium chlorite aqueous solutions

... Kinetics serves as a tool for studying the rates of chemical reactions and understanding how various processes are affected [11]. It is linked to profitability and engineering design and has numerous applications in areas such as reactor design, process control, and optimisation [12,13]. Generally, kinetic investigations are more challenging than thermodynamic investigations, as they involve multiple data collection steps and often complex processes with difficult-to-identify phases. ...

Reference:

Simultaneous acid Co and Cu leaching from oxidised and sulfide mixture ores: optimisation and kinetic study