182 research outputs found
Contribution of prokaryotes and eukaryotes to CO2 emissions in the wastewater treatment process
Reduction of the greenhouse effect is primarily associated with the reduction of
greenhouse gas (GHG) emissions. Carbon dioxide (CO2) is one of the gases that
increases the greenhouse effect - it is responsible for about half of the greenhouse
effect. Significant sources of CO2 are wastewater treatment plants (WWTPs) and
waste management, with about 3% contribution to global emissions. CO2 is produced
mainly in the aerobic stage of wastewater purification and is a consequence of
activated sludge activity. Although the roles of activated sludge components in the
purification process have been studied quite well, their quantitative contribution to
CO2 emissions is still unknown. The emission of CO2 caused by prokaryotes and
eukaryotes over the course of a year (taking into account subsequent seasons) in
model sequencing batch reactors (SBR) is presented in this study. In this work, for
the first time, we aimed to quantify this contribution of eukaryotic organisms to total
CO2 emissions during the WWTP process. It is of the order of several or more ppm.
The contribution of CO2 produced by different components of activated sludge in
WWTPs can improve estimation of the emissions of GHGs in this area of human
activity
Photometric Analysis : Methods of Determining Non-Metals
374 tr.; 22 cm
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