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When sustainable development (SD) is only taught in specific courses, it is questionable if engineering students are able to integrate it into their engineering practices and technical designs. For this reason, sustainability should also be integrated into regular engineering courses, e.g. design courses, materials courses or processing technology. The SD education plan adopted by the board of Delft University of Technology (DUT) in 1998 was based on this philosophy. It consists of three interconnected activities for all engineering curricula: the implementation of an elementary course “Technology in sustainable development”; the development of a graduation program in sustainable development for students who want to specialize; and the integration of sustainable development in all regular courses, wherever applicable. This paper describes various activities that the project group carried out to stimulate and support the third strategy: SD integration. It turned out that top‐down attempts to influence the content of courses often triggered resistance among lecturers, as they feared the intermingling of laymen into their scientific/engineering discipline. Interaction was important but was often impossible by lack of mutual understanding. Participation in a national project aimed to stimulate discussion by making disciplinary sustainability reviews of academic/engineering disciplines. This approach was promising as it created the base for serious discussions. However, the reports often ended in the bureaucracies of the departments. More positive results were achieved with a semi‐consultant approach directed at discussing SD issues with individual lecturers. Many lecturers were willing to discuss their courses, and were interested in practical ideas to integrate sustainability. This interactive approach is promising because it does not conflict with academic culture and keeps the lecturer in charge of his own course.

Centrifugal adsorption technology (CAT) is a new compact, countercurrent technology for efficient adsorption from large liquid streams by using adsorbent particles in the micrometer range. CAT seems particularly suited for the recovery of macromolecules at low concentrations, because the small particle dimensions lead to fast mass transfer rates. In this work, the potential of CAT for protein recovery is studied by model and experiment. A predictive model for the separation performance of CAT is presented, incorporating mass transfer resistance and axial dispersion transport in the liquid and the adsorbent phases. The model calculations were compared to experimental data for the adsorption of bovine serum albumin (BSA) on a standard commercial anion-exchange resin with particle diameter d(p) = 50 microm in a pilot-scale CAT apparatus. The model calculations accurately predicted the separation efficiency of CAT. The experimental set-up is shown to be mass transfer limited for the conducted experiments, which agrees with the model predictions. The model was also used to estimate the dimensions and performance of a CAT apparatus for the large-scale recovery of human serum albumin (HSA) from fermentation broth at the scale of 40 tons per year. The resulting equipment dimensions proved to be very small indeed, making CAT a potentially very attractive technology.

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