论文信息 - Using GAC to Remove VOCs From Air Stripper Off-Gas

Using GAC to Remove VOCs From Air Stripper Off-Gas

This article focuses on the technical and economic feasibility of treating air stripper off-gas with granular activated carbon (GAC). For dichloroethene and trichloroethene, air stripping followed by off-gas GAC treatment was shown to be very effective and economical compared with aqueous-phase GAC treatment, with GAC usage rates for gas-phase adsorption being less than one half those for aqueous-phase adsorption. Also, because gas-phase adsorption kinetics are much faster than liquid-phase kinetics, the required bed depth and diameter are much smaller for gas-phase beds. Steam regeneration was found to be ineffective for regeneration gas-phase GAC at low concentrations.

[1] P. J. Reucroft,et al. Sorption properties of activated carbon , 1971 .

[2] R. Rhodes Trussell,et al. Design of aeration towers to strip volatile contaminants from drinking water , 1980 .

[3] P. J. Reucroft,et al. Adsorption of HCN and H2O vapor mixtures by activated and impregnated carbons , 1979 .

[4] John C. Crittenden,et al. Design Considerations for GAC Treatment of Organic Chemicals , 1987 .

[5] A. Itaya,et al. LIQUID PHASE ADSORPTION EQUILIBRIUM OF PHENOL AND ITS DERIVATIVES ON MACRORETICULAR ADSORBENTS , 1984 .

[6] John Howard Perry,et al. Chemical Engineers' Handbook , 1934 .

[7] Neil J. Hutzler,et al. Transport of Organic Compounds With Saturated Groundwater Flow: Model Development and Parameter Sensitivity , 1986 .

[8] Terukatsu Miyauchi,et al. Axial dispersion in packed beds , 1975 .

[9] C. Y. Lee,et al. Estimation of Diffusion Coefficients for Gases and Vapors , 1955 .

[10] N. Wakao,et al. Effect of fluid dispersion coefficients on particle-to-fluid heat transfer coefficients in packed beds , 1978 .

[11] J. Crittenden,et al. Simplified Models for Design of Fixed‐Bed Adsorption Systems , 1984 .

[12] J. Crittenden,et al. Evaluating Multicomponent Competitive Adsorption in Fixed Beds , 1987 .

[13] C. Geankoplis,et al. Liquid-Phase Mass Transfer at Low Reynolds Numbers , 1963 .

[14] John C. Crittenden,et al. Design and Evaluation of an Air-Stripping Tower for Removing VOCs From Groundwater , 1986 .