Modeling of biomass gasification in fluidized bed

Enzymatic biodiesel production has been investigated intensively, but is presently employed industrially only in a 20,000 tons/year pilot plant in China (Du et al. [2008] Appl Microbiol Technol 79(3):331-337). This review presents a critical analysis of the current status of research in this area and accentuates the main obstacles to the widespread use of enzymes for commercial biodiesel transesterification. Improved results for enzymatic catalysis are seen with respect to increased yield, reaction time and stability, but the performance and price of the enzymes need further advances for them to become attractive industrially for biodiesel production. Critical aspects such as mass transfer limitations, use of solvents and water activity are discussed together with process considerations and evaluation of possible reactor configurations, if industrial production with enzymes is to be carried out. Results of published studies on the productivity of enzymes are also presented and compared to the use of chemical catalysts.

https://onlinelibrary.wiley.com/doi/pdf/10.1002/bit.22256

A review of the current state of biodiesel production using enzymatic transesterification

The past decade has seen a boom in environmental adsorption studies on the adsorptive removal of pollutants from the aqueous phase. A large majority of works treat kinetic modeling as a mere routine to describe the macroscopic trend of adsorptive uptake by using common models, often without careful appraisal of the characteristics and validity of the models. This review compiles common kinetic models and discusses their origins, features, modified versions (if any), and applicability with regard to liquid adsorption modeling for both batch adsorption and dynamic adsorption systems. Indiscriminate applications, ambiguities, and controversies are highlighted and clarified. The appropriateness of linear regression for correlating kinetic data is discussed. This review concludes with a note on the current scenario and the future of kinetics modeling of liquid adsorption.

Insight into the adsorption kinetics models for the removal of contaminants from aqueous solutions

Deactivation of hydroprocessing catalysts

Anode-supported intermediate temperature direct internal reforming solid oxide fuel cell. I: model-based steady-state performance

CHEMICAL ENGINEERING KINETICS Elements of Reaction Kinetics Kinetics of Heterogeneous Catalytic Reactions Transport Processes with Reactions Catalyzed by Solids Noncatalytic Gas-Solid Reactions Catalyst Deactivation Gas-Liquid Reactions ANALYSIS AND DESIGN OF CHEMICAL REACTORS The Fundamental Mass, Energy, and Momentum Balance Equations The Batch and Semibatch Reactors The Plug Flow Reactor The Perfectly Mixed Flow Reactor Fixed Bed Catalytic Reactors Nonideal Flow Patterns and Population Balance Models Fluidized Bed and Transport Reactors Multiphase Flow Reactors Author Index Subject Index.

Kenneth B. Bischoff

Papers

Chemical Reactor Analysis and Design