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January 2006 Vol. 102, No. 1
Jan Cover 06

In This Issue

COVER STORY

Designing Suspension-Mixing Systems

Impeller and vessel geometries are key factors in selecting mixing equipment to efficiently suspend particulate solids in slurries

Pavel Ditl and Frantisek Rieger
REACTIONS AND SEPARATIONS

Optimizing Batch Operations

Use this novel method to optimize the operating conditions as they vary through time in batch processes.

Robin Smith and Kah Loong Choong
PROCESS SIMULATION

Building Models from Simulator Runs

The design-of-experiments approach has the advantage of providing the framework to build complex models with minimum use of time and effort.

Magali de Macedo and Aad van Veldhoven
ENVIRONMENTAL MANAGEMENT

Simplify Wastewater Treatment Process Design

Unlike time-consuming conventional methods, this approach to designing a dissolved air flotation (DAF) plant requires only the physical characteristics of the flocs — their size and density, flowrate and temperature.

Apostolos Vlyssides, Elli Maria Barampouti and Sofia Mai
CAREER CATALYST

Match the Effort to the R&D Investment

Using a phased engineering approach to guide R&D projects will improve efficiency and avoid costly experimental excursions.

Kelly Ibsen