In order to meet increasingly stringentEuropean discharge standards, new applicationsand
control strategies for the sustainableremoval of ammonia from wastewater have to …

Electrochemical microsensors for O 2, pH, H 2 S, H 2, and N 2 O are now available
commercially, thus it has become a relatively simple task to analyze the microenvironment in …

Morphology of fungal pellets has a significant influence on mass transfer and turnover
processes in submerged cultures. There are many reports in literature that biomass is not …

Interfacial processes in sediments, biofilms, and other benthic aquatic systems can be
strongly affected by the presence of hydrodynamic boundary layers. The boundary layer …

Mass transport within biological aggregates is a key process that can determine overall
turnover rates in submerged cultivations. A parameter commonly used for its description is …

Steep physiochemical gradients and diffusive limitation associated with microscale features
such as cracks and pores make soil and sediments remarkably heterogeneous …

If the wastewater to be treated contains various forms of nitrogen, three biological treatment
steps are required for nitrogen removal:(a) in a bio-oxidation step, organic nitrogen is …

New analytical methods such as advanced molecular techniques and microsensors have
resulted in new insights about how nitrogen transformations in stratified microbial systems …

The author and the promoter give the authorization to consult and to copy parts of this work
for personal use only. Any other use is limited by the Laws of Copyright. Permission to …

A newly developed biosensor for nitrite having a 90% response time of about 1 min was
used to monitor nitrite concentration in activated sludge exposed to oxic/anoxic cycles. The …