Show simple item record

dc.contributor.authorRiley, Kate Alexis
dc.contributor.authorStein, Otto R.
dc.contributor.authorHook, Paul B.
dc.date.accessioned2017-07-20T15:07:35Z
dc.date.available2017-07-20T15:07:35Z
dc.date.issued2005-06
dc.identifier.citationRiley KA, Stein OR, Hook PB, "Ammonium removal in constructed wetland microcosms as influenced by presence and species of plants and organic carbon load," J Environ Sci Heal A, 2005 40(6-7):1109-1121en_US
dc.identifier.issn1093-4529
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/13359
dc.description.abstractWe evaluated ammonium nitrogen removal and nitrogen transformations in three-year-old, batch-operated, subsurface wetland microcosms. Treatments included replicates of Typha latifolia, Carex rostrata, and unplanted controls when influent carbon was excluded, and C. rostrata with an influent containing organic carbon. A series of 10-day batch incubations were conducted over a simulated yearlong cycle of seasons. The presence of plants significantly enhanced ammonium removal during both summer (24 degrees C, active plant growth) and winter (4 degrees C, plant dormancy) conditions, but significant differences between plant species were evident only in summer when C. rostrata outperformed T. latifolia. The effect of organic carbon load was distinctly seasonal, enhancing C. rostrata ammonium removal in winter but having an inhibitory effect in summer. Season did not influence ammonium removal in T. latifolia or unplanted columns. Net production of organic carbon was evident year-round in units without an influent organic carbon source, but was enhanced in summer, especially for C. rostrata, which produced significantly more than T. latifolia and unplanted controls. No differences in production were evident between species in winter. COD values for C. rostrata microcosms with and without influent organic carbon converged within 24 hours in winter and 7 days in summer. Gravel sorption, microbial immobilization and sequential nitrification/denitrification appear to be the major nitrogen removal mechanisms. All evidence suggests differences between season and species are due to differences in seasonal variation of root-zone oxidation.en_US
dc.titleAmmonium removal in constructed wetland microcosms as influenced by presence and species of plants and organic carbon loaden_US
dc.typeArticleen_US
mus.citation.extentfirstpage1109en_US
mus.citation.extentlastpage1121en_US
mus.citation.issue6-7en_US
mus.citation.journaltitleJournal of Environmental Science and Health, Part Aen_US
mus.citation.volume40en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.doi10.1081/ese-200055594en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US
mus.data.thumbpage7en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record


MSU uses DSpace software, copyright © 2002-2017  Duraspace. For library collections that are not accessible, we are committed to providing reasonable accommodations and timely access to users with disabilities. For assistance, please submit an accessibility request for library material.