Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates

This study compares the behavior of nitrification (NH4+, NO2- and NO3-), and performance, in terms of the surface TAN conversion rate (STR), volumetric TAN conversion rate (VTR) and removal percentage of TAN (PTR) among three fixation media of nitrifying bacteria (two alternatives (S1, S2) and one c...

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Autores principales:	Carroza,Carlos, Hurtado,Felipe, Gutierrez,Xavier
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2012
Materias:	biofiltration nitrification ammonium biofilm Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300024
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spelling	oai:scielo:S0718-560X20120003000242013-01-03Nitrogenated compounds' biofiltration under alternative bacterium fixation substratesCarroza,CarlosHurtado,FelipeGutierrez,Xavier biofiltration nitrification ammonium biofilm Chile This study compares the behavior of nitrification (NH4+, NO2- and NO3-), and performance, in terms of the surface TAN conversion rate (STR), volumetric TAN conversion rate (VTR) and removal percentage of TAN (PTR) among three fixation media of nitrifying bacteria (two alternatives (S1, S2) and one commercial (Co)). The experiment was performed in two tests of 42 days each. Three isolated biofiltration systems were built for the experience, to which were added media colonized by bacteria as a "seed" to start the process of nitrification. Ammonium chloride (NH4Cl) was attached as source of ammonium in reconditioned freshwater, also gradually adding inorganic carbon (HCO3-) to maintain moderate water hardness. The average results for both tests indicate that the substrates S1 and S2 show a statistically similar behavior to the substrate Co (P > 0.05) during the first 33 days (until steady state). For the second test in terms of performance, STR values were 0.40, 0.39, 0.39 g TAN m-2 d-1 recorded for S2 and Co respectively; in terms of PRN, values were 92(3) 9־/ and 93% for S1, S2 and Co, respectively. Regarding VTR, values of 72.31, 114.94, and 39.02 g TAN m-3 d-1 were recorded for S2 and Co respectively. Statistical analysis provided that for STR and PRN, no significant differences, were found. But for VTR, statistically significant differences between means were evaluated, registering for the S2 media the highest value of VTR.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.40 n.SpecIssue 20122012-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300024en103856/vol40-issue3-fulltext-24
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	biofiltration nitrification ammonium biofilm Chile
spellingShingle	biofiltration nitrification ammonium biofilm Chile Carroza,Carlos Hurtado,Felipe Gutierrez,Xavier Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates
description	This study compares the behavior of nitrification (NH4+, NO2- and NO3-), and performance, in terms of the surface TAN conversion rate (STR), volumetric TAN conversion rate (VTR) and removal percentage of TAN (PTR) among three fixation media of nitrifying bacteria (two alternatives (S1, S2) and one commercial (Co)). The experiment was performed in two tests of 42 days each. Three isolated biofiltration systems were built for the experience, to which were added media colonized by bacteria as a "seed" to start the process of nitrification. Ammonium chloride (NH4Cl) was attached as source of ammonium in reconditioned freshwater, also gradually adding inorganic carbon (HCO3-) to maintain moderate water hardness. The average results for both tests indicate that the substrates S1 and S2 show a statistically similar behavior to the substrate Co (P > 0.05) during the first 33 days (until steady state). For the second test in terms of performance, STR values were 0.40, 0.39, 0.39 g TAN m-2 d-1 recorded for S2 and Co respectively; in terms of PRN, values were 92(3) 9־/ and 93% for S1, S2 and Co, respectively. Regarding VTR, values of 72.31, 114.94, and 39.02 g TAN m-3 d-1 were recorded for S2 and Co respectively. Statistical analysis provided that for STR and PRN, no significant differences, were found. But for VTR, statistically significant differences between means were evaluated, registering for the S2 media the highest value of VTR.
author	Carroza,Carlos Hurtado,Felipe Gutierrez,Xavier
author_facet	Carroza,Carlos Hurtado,Felipe Gutierrez,Xavier
author_sort	Carroza,Carlos
title	Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates
title_short	Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates
title_full	Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates
title_fullStr	Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates
title_full_unstemmed	Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates
title_sort	nitrogenated compounds' biofiltration under alternative bacterium fixation substrates
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300024
work_keys_str_mv	AT carrozacarlos nitrogenatedcompoundsbiofiltrationunderalternativebacteriumfixationsubstrates AT hurtadofelipe nitrogenatedcompoundsbiofiltrationunderalternativebacteriumfixationsubstrates AT gutierrezxavier nitrogenatedcompoundsbiofiltrationunderalternativebacteriumfixationsubstrates
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Nitrogenated compounds' biofiltration under alternative bacterium fixation substrates

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