Simultaneous removal of C and N from fish effluents in filter reactors: Effect of recirculation ratio on the axial distribution of microbial communities

Process bioengineering applied to BTEX degradation in microaerobic treatment systems

“…The use of effluent recirculation can aid in the distribution of the liquid at the inlet of the treatment system, reducing the concentration gradient and toxicity of the substrate along the bioreactor and providing a more efficient mass transfer between substrate and microbiota, which, consequently, could influence positively the conversion of substrate into biogas (Mohan et al, 2007;Zuo et al, 2014). However, depending on the composition of the wastewater, the configuration of the treatment system and the recirculated flow rate, the results may be quite different (Díez-Montero et al, 2016;Giustinianovich et al, 2015;Ramakrishnan and Gupta, 2008).…”

Simultaneous nitrate and organic matter removal from a dairy effluent by biodenitrification

“…When the effluent is rich in both of nitrate and organic compounds, the biodenitrification is not only the best way to remove nitrate but can also contribute to remove organic pollution. Recently, the exploitation of the biodegradable organic matter present either in effluents or in sludge resulting from the wastewater treatment plants is privileged (BERNET et al, 1996;ZAYED and WINTER, 1998;GIUSTINIANOVICH et al, 2015).…”