A previously developed immobilization technique involving agar as matrix is investigated further in penicillin production by P. chrysogenum ATCC 10238 at reactor level. Several modifications were found to decrease the germination lag time, including a higher spore concentration, an increased porosity of gel, and decreasing the mass transfer barrier. This approach enabled the production of penic...

A low head recirculating aquaculture system has been designed, constructed, and is being tested at the Vriginia Tech Aquaculture Lab. Each recirculating system contains two grow-out tanks; a filtration vessel containing a microscreen drum filter; and four rotating biological contactor (RBC) biofilters; sixteen airlift pumps (eight per tank); a regenerative blower with air lines, vacuum lines, a...

Multistep and continuous production of core–shell InP/ZnS semiconductor nanocrystals in a high-temperature miniature stirred-tank reactor cascade.

The present study evaluates the removal of micropollutants from water/wastewater contaminated sources through application a heterogeneous catalytic ozonation process, using pilot-scale continuous operation unit, composed membrane module for diffusion and effective dilution ozone into liquid phase to be treated plug flow reactor/continuous stirred tank reactor (PFR/CSTR) contact system in series...