A steady-state model of the reactor was established to analyze the removal of acetone through the reactor packed with ca-alginate immobilized activated sludge gel beads. The effective diffusion coefficient of acetone in calcium alginate gel beads was determined as 1.71×10 -8 ...
Figures 9a,b report the THz-TDS absorption coefficient of acetone and CH3OH in gaseous-phase between 0.2 to 2.5 THz with 15 GHz spectral resolution, obtained by means of a home-made THz-TDS spectrometer at Terahertz laboratory (University of Rome, ‘La Sapienza’) [93,108]. Figure 9 (a...
35,38]. MXenes-based gas sensors are expected to achieve efficient and rapid detection of gases such as ammonia (NH3), nitrogen dioxide (NO2), and volatile organic compounds (VOCs) at room temperature [42,43,44]. However, due to its excellent...
To enhance process viability, the conversion of gas to more valuable products than ethanol have to be developed. There have been several reported successes in expressing heterologous pathways to produce acetone, butanol, butyrate, and isopropanol, in acetogens [22,25]. Recent publication by the Whi...
Further, they proved the efficiency of their composite sensor material by testing the ethanol response of the sensor in the presence of toluene, NO2, NH3, methanol, formaldehyde, ethylene glycol, CO, benzyl alcohol, and acetone. Other important parameters to be considered in order to achieve a...
According to Einstein's equation, the diffusion coefficient of solutes in a liquid is directly proportional to the reciprocal of the molecular radius of the diffusing solute. The Wilke–Chang expression [46] is one of the widely used empirical correlations for estimating gas diffusion coefficients ...
of various acetogens to confirm the involvement of the acetaldehyde oxidoreductase (AOR) in ethanol production and NADPH-dependent alcohol dehydrogenase (ADH) in the hydration of acetone to isopropanol in acetogens [19]. Moreover,C. autoethanogenumhas been the subject of a multi-omics ...
observed that the sensing performance of the sensor is controlled by the activation of O2molecules as the oxygen supply. The presence of Au NPs may act as catalysts to promote the dissociation of oxygen molecules into lattice oxygen for the oxidation of acetone125. A similar result was observed...
allow a highly selective detection of acetone (R5ppm = 192). Similarly, bimetallic PtM (M = Pd, Rh, and Ni) catalysts can be introduced to meso-WO3NFs that are then highly selective detectors of acetone and H2S gas [53]. Sensors array combined with pattern recognition methods (...
metal material on the high-pressure side; Φn, which is known as permeability coefficient, is a basic parameter for describing the permeation performance of gas-solid matched group; and under circumstances of molecular permeation, Φ has the same unit with the diffusion coefficient D, namely m2/...