Kazan Federal University Digital Repository

The influence of ammonium and methods for removal during the anaerobic treatment of poultry manure

Show simple item record

dc.contributor.author Krylova N.
dc.contributor.author Khabiboulline R.
dc.contributor.author Naumova R.
dc.contributor.author Nagel M.
dc.date.accessioned 2018-09-17T20:35:29Z
dc.date.available 2018-09-17T20:35:29Z
dc.date.issued 1997
dc.identifier.issn 0268-2575
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/133724
dc.description.abstract The addition of exogenous NH4Cl to poultry manure and synthetic medium was used to study the effect of ammonia-nitrogen on the activity and composition of a methanogenic consortium. Results indicated that the production of biogas and methane was not affected by the variation in NH4Cl concentration within the range 2-10 g dm-3 (0.5-2.6 g N-NH4 dm-3). At higher values of ammonium (10-30 g dm-3 or 2-8 g N-NH, dm-3) a significant decline in both parameters (by 50-60% for biogas and 80-90% for methane) was observed. A significant decrease in the numbers of bacteria of all physiological groups (especially proteolytic and methanogenic) was observed when more than 30 g NH4Cl dm-3 (7.8 g N-NH4 dm-3) was added to the fermentation medium. The addition of 10% (w/v) of powdered phosphorite ore enhanced the production of biogas and methane at NH4Cl concentrations up to 30 g dm-3, and also changed the composition of the methanogenic consortium. A partial recovery in the numbers of proteolytic and methanogenic bacteria coupled with the decrease in the density of sulphate-reducers was observed. High concentrations (more than 50 g dm-3) of NH4Cl seemed to cause irreversible inhibition of methanogenesis which could not be eliminated by the addition of phosphorites. | The addition of exogenous NH4Cl to poultry manure and synthetic medium was used to study the effect of ammonia-nitrogen on the activity and composition of a methanogenic consortium. Results indicated that the production of biogas and methane was not affected by the variation in NH4Cl concentration within the range 2-10 g dm-3 (0.5-2.6 g N-NH4 dm-3). At higher values of ammonium (10-30 g dm-3 or 2-8 g N-NH4 dm-3) a significant decline in both parameters (by 50-60% for biogas and 80-90% for methane) was observed. A significant decrease in the numbers of bacteria of all physiological groups (especially proteolytic and methanogenic) was observed when more than 30 g NH4Cl dm-3 (7.8 g N-NH4 dm-3) was added to the fermentation medium. The addition of 10% (w/v) of powdered phosphorite ore enhanced the production of biogas and methane at NH4Cl concentrations up to 30 g dm-3, and also changed the composition of the methanogenic consortium. A partial recovery in the numbers of proteolytic and methanogenic bacteria coupled with the decrease in the density of sulphate-reducers was observed. High concentrations (more than 50 g dm-3) of NH4Cl seemed to cause irreversible inhibition of methanogenesis which could not be eliminated by the addition of phosphorites.
dc.relation.ispartofseries Journal of Chemical Technology and Biotechnology
dc.subject Ammonia inhibition
dc.subject Anaerobic digestion
dc.subject Methanogenic consortium
dc.subject Phosphorite ore
dc.subject Poultry manure
dc.title The influence of ammonium and methods for removal during the anaerobic treatment of poultry manure
dc.type Article
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 70
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 99
dc.source.id SCOPUS02682575-1997-70-1-SID0031239253


Files in this item

This item appears in the following Collection(s)

  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

Show simple item record

Search DSpace


Advanced Search

Browse

My Account

Statistics