Investigation on the use of nitrified wastewater for the steady-state operation of a biotrickling filter for the removal of hydrogen sulphide in biogas

Autor:	Kara Edmonson, Patricia Falletta, Peter Seto, Gabriela Soreanu, Michel Béland
Rok vydání:	2008
Předmět:	Environmental Engineering Denitrification business.industry Hydrogen sulfide Sewage Pulp and paper industry Anoxic waters Filter (aquarium) chemistry.chemical_compound chemistry Wastewater Biogas Biofilter Environmental Chemistry Environmental science business General Environmental Science
Zdroj:	Journal of Environmental Engineering and Science. 7:543-552
ISSN:	1496-256X 1496-2551
Popis:	A biological process for the removal of hydrogen sulphide (H2S) in digester biogas was investigated using nitrified municipal wastewater as a nutrient solution under anoxic conditions. Biogas was continuously fed into a 0.012 m3 biotrickling filter at an H2S loading rate of approximately 1.50 g/d, counter-current to the nutrient solution. A zero-order macro-kinetic process was established on the basis of the degradation and formation rates for N and S species. The process performance was dependent on the presence of nitrate at low concentrations (in the order of 20 mg N-NO3–/L) found to be sufficient to maintain maximum H2S removal efficiency (>99%) under steady-state conditions where nitrate degradation rate was constant. The developed process has the potential to be adopted as an attractive alternative for biogas cleaning and, in some cases, with simultaneous wastewater denitrification. The information contained within this paper may be used as a basis for further research and (or) in the design of a scaled-up process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2b657ed5922eba9d81e45982c2eca3fc https://doi.org/10.1139/s08-023 Zobrazit plný text záznamu Plný text ve formátu PDF