Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000300008 |
Resumo: | The occurrence of nitrogenous compounds in industrial effluents at concentration levels above legal limits, is a well-known and serious pollution problem for the receiving body. The biological process for the removal of these substances, commonly referred to as ammoniacal nitrogen, is known as nitrification. Bacteria involved are mainly of the genuses Nitrosomonas and Nitrobacter. The aim of the present work was to study the effect of the hydraulic retention time (HRT) on the efficiency of ammonia removal from a petroleum refinery effluent using activated carbon particles as a biofilm support in an airlift bioreactor. The experiments were carried out using HRTs, equal to six, eight and ten hours. The results show that HRT equal to 8 and 10 hours were enough to reduce ammoniacal nitrogen concentration to levels below permited legal limits (5mg/L NH3-N). The reactor nitrifying performance was maximized at 85% removal of ammoniacal nitrogen, for a HRT equal to 10 hours. |
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Brazilian Journal of Chemical Engineering |
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Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological ReactorNitrificationairliftHRTThe occurrence of nitrogenous compounds in industrial effluents at concentration levels above legal limits, is a well-known and serious pollution problem for the receiving body. The biological process for the removal of these substances, commonly referred to as ammoniacal nitrogen, is known as nitrification. Bacteria involved are mainly of the genuses Nitrosomonas and Nitrobacter. The aim of the present work was to study the effect of the hydraulic retention time (HRT) on the efficiency of ammonia removal from a petroleum refinery effluent using activated carbon particles as a biofilm support in an airlift bioreactor. The experiments were carried out using HRTs, equal to six, eight and ten hours. The results show that HRT equal to 8 and 10 hours were enough to reduce ammoniacal nitrogen concentration to levels below permited legal limits (5mg/L NH3-N). The reactor nitrifying performance was maximized at 85% removal of ammoniacal nitrogen, for a HRT equal to 10 hours.Brazilian Society of Chemical Engineering1998-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000300008Brazilian Journal of Chemical Engineering v.15 n.3 1998reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66321998000300008info:eu-repo/semantics/openAccessFurtado,A.A.L.Albuquerque,R.T.Leite,S.G.F.Peçanha,R.P.eng1998-10-27T00:00:00Zoai:scielo:S0104-66321998000300008Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:1998-10-27T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor |
title |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor |
spellingShingle |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor Furtado,A.A.L. Nitrification airlift HRT |
title_short |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor |
title_full |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor |
title_fullStr |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor |
title_full_unstemmed |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor |
title_sort |
Effect of Hydraulic Retention Time on Nitrification in an AirLift Biological Reactor |
author |
Furtado,A.A.L. |
author_facet |
Furtado,A.A.L. Albuquerque,R.T. Leite,S.G.F. Peçanha,R.P. |
author_role |
author |
author2 |
Albuquerque,R.T. Leite,S.G.F. Peçanha,R.P. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Furtado,A.A.L. Albuquerque,R.T. Leite,S.G.F. Peçanha,R.P. |
dc.subject.por.fl_str_mv |
Nitrification airlift HRT |
topic |
Nitrification airlift HRT |
description |
The occurrence of nitrogenous compounds in industrial effluents at concentration levels above legal limits, is a well-known and serious pollution problem for the receiving body. The biological process for the removal of these substances, commonly referred to as ammoniacal nitrogen, is known as nitrification. Bacteria involved are mainly of the genuses Nitrosomonas and Nitrobacter. The aim of the present work was to study the effect of the hydraulic retention time (HRT) on the efficiency of ammonia removal from a petroleum refinery effluent using activated carbon particles as a biofilm support in an airlift bioreactor. The experiments were carried out using HRTs, equal to six, eight and ten hours. The results show that HRT equal to 8 and 10 hours were enough to reduce ammoniacal nitrogen concentration to levels below permited legal limits (5mg/L NH3-N). The reactor nitrifying performance was maximized at 85% removal of ammoniacal nitrogen, for a HRT equal to 10 hours. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000300008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000300008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66321998000300008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.15 n.3 1998 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213170364284928 |