The microbial community in a moving bed biotrickling filter operated to remove hydrogen sulfide from gas streams

Systematic and Applied Microbiology
Cesira GiordanoClaudia Vannini

Abstract

The information available on the microbial communities responsible for pollutant degradation is increasingly accessible. Its use to optimize process design and operation is an important challenge in the field of effluent treatment research. Therefore, a prototype of a moving bed biotrickling filter (MBBTF) reactor was designed and, for the first time, operated at full-scale for the removal of sulfides desorbing from tannery industrial wastewater. The bacterial community operating in this innovative reactor was studied, and its composition and response to different operating conditions were characterized. A stable biomass, dominated by sulfur-oxidizing bacteria of the genus Acidithiobacillus was selected from inside the MBBTF reactor, and temperature, pH and bed rotation were shown to be the main factors driving the community structure. Moreover, data from different approaches indicated an uneven spatial distribution of biofilm inside the studied reactor, due to the combined effect of fluid dynamics and substrate gradients within the bed volume. Despite the high removal efficiency achieved by this innovative prototype (80% on average), the data suggested that the result could be improved by adopting solutions for a more stable a...Continue Reading

Citations

Jun 4, 2019·Frontiers in Microbiology·Dimitrios KioroglouMaria Del Carmen Portillo
Jun 11, 2021·Critical Reviews in Biotechnology·Sang-Hun LeeEl-Sayed Salama
Jul 3, 2021·International Journal of Environmental Research and Public Health·Francesco SpennatiGiulio Munz

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