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dc.contributor.authorChen, CR
dc.contributor.authorPhillips, IR
dc.contributor.authorCondron, LM
dc.contributor.authorGoloran, J
dc.contributor.authorXu, ZH
dc.contributor.authorChan, KY
dc.date.accessioned2017-05-03T13:13:15Z
dc.date.available2017-05-03T13:13:15Z
dc.date.issued2013
dc.date.modified2014-08-28T22:59:57Z
dc.identifier.issn0032-079X
dc.identifier.doi10.1007/s11104-012-1468-0
dc.identifier.urihttp://hdl.handle.net/10072/52019
dc.description.abstractBackground and Aims The objective of this study was to test the suitability of greenwaste biochar to aid nitrogen (N) retention in rehabilitated bauxite-processing residue sand (BRS). Methods Bauxite residue sand was collected from the Alcoa of Australia Pinjarra refinery. The pH of BRS was adjusted to values of 5, 7, 8 and 9 and subsequently amended with different rates (1, 5, 10 and 20 %, w/w) of greenwaste biochar. The loss of N via NH3 volatilization following addition of di-ammonium phosphate (DAP) was determined using an acid trapping method. Results At low pH (5), increasing pH rather than adsorption capacity, resulting from biochar addition, caused greater losses of N through volatilization from BRS. In BRS with medium pH (7, 8), increasing adsorption capacity, induced by biochar addition, played the more dominant role in enhancing adsorption of NH 4 + -N /NH3-N and lowering NH3 volatilization. In the BRS with high pH (9), the majority of NH 4 + -N /NH3-N pools was lost via NH3 volatilization due to the strong acid-base reaction at this pH. Conclusions It is concluded that the interaction of changes in pH and adsorption capacity induced by greenwaste biochar addition affects the availability and dynamics of NH 4 + -N/ NH3-N in BRS amended with DAP.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.publisher.placeNetherlands
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom301
dc.relation.ispartofpageto312
dc.relation.ispartofissue1-2
dc.relation.ispartofjournalPlant and Soil
dc.relation.ispartofvolume367
dc.rights.retentionY
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchSoil sciences not elsewhere classified
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchAgricultural, veterinary and food sciences
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode410699
dc.subject.fieldofresearchcode31
dc.subject.fieldofresearchcode30
dc.titleImpacts of greenwaste biochar on ammonia volatilisation from bauxite processing residue sand
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2013
gro.hasfulltextNo Full Text
gro.griffith.authorXu, Zhihong
gro.griffith.authorChen, Chengrong
gro.griffith.authorGoloran, Johnvie B.


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