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Search Results: 1 - 10 of 174 matches for " Liv Fiksdal "
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Impact of Temperature on Biological Denitrification Process
Iswar Man Amatya,Bhagwan Ratna Kansakar,Vinod Tare,Liv Fiksdal
Journal of the Institute of Engineering , 2009, DOI: 10.3126/jie.v7i1.2070
Abstract: Nitrate removal in groundwater was carried out by biological method of denitrification process. The denitrification and without denitrification were performed in two different sets of reactors. Each reactor consists of two columns connected in series packed with over burnt bricks as media. The filtration rate varied from 5.3 to 52.6 m/day for denitrification process. The ammonia, nitrate and nitrite nitrogen concentrations were measured at inlet, intermediate ports and outlet. The temperature varied from 10 to 30°C at 2°C intervals. The results demonstrated that high amount of nitrate nitrogen removed in groundwater at denitrification process. The nitrate nitrogen removed by denitrification varied from 3.50 to 39.08 gm/m3/h at influent concentration from 6.32 to 111.04 gm/m3/h. Denitrification was found more significant above 16°C. Key words: Over burnt brick, Denitrification, Filtration rate and Temperature Journal of the Institute of Engineering , Vol. 7, No. 1, July, 2009?pp. 121-126 doi: 10.3126/jie.v7i1.2070 ?
Role of pH on biological Nitrification Process
Iswar Man Amatya,Bhagwan Ratna Kansakar,Vinod Tare,Liv Fiksdal
Journal of the Institute of Engineering , 2011, DOI: 10.3126/jie.v8i1-2.5102
Abstract: It is important to determine the effect of changing environmental conditions on the microbial kinetics for design and modeling of biological treatment processes. In this research, the kinetics of ammonia oxidation by nitrifying process bacteria under varying pH and temperature conditions are studied. Ammonia oxidation in groundwater was carried out by biological method of nitrification process. The nitrification was performed in one set of reactors. The reactor consists of two columns connected in series packed with over burnt bricks as media. The filtration rate varied from 10.5 to 210.4 m/day for nitrification process respectively. The ammonia, nitrate and nitrite nitrogen concentrations were measured at inlet, intermediate ports and outlet. The temperature varied from 10 to 30°C at 2°C intervals. The results demonstrated that high amounts of ammonia nitrogen nitrified in groundwater at nitrification process. The average ammonia nitrogen oxidation efficiency of 77.27% was achieved from pH 7.3 to 8.0 in the reactor packed with OBB media at 20°C, for the flow rate 500ml/min due to biological nitrification. The total amount of ammonia nitrogen removed by nitrification varied from 0.76 to 17.80 gm/m 3 /h at influent concentration from 2.84 to 149.28 gm/m 3 /h. Key words: Over burnt brick; Filtration rate; Temperature; Nitrification and Nitrifying bacteria DOI: http://dx.doi.org/10.3126/jie.v8i1-2.5102 Journal of the Institute of Engineering Vol. 8, No. 1&2, 2010/2011 Page: 119-125 Uploaded Date : 20 July, 2011
“I am what I am?” - Toward a Sexual Politics of Contingent Foundations
Liv Mertz
Graduate Journal of Social Science , 2008,
Abstract:
Jane McAdam - Climate Change, Forced Migration, and International Law
Liv Feijen
Merkourios : Utrecht Journal of International and European Law , 2012,
Abstract:
Mesteren fra Cape Town
Liv Lundberg
Nordlit : Tidsskrift i litteratur og kultur , 2003,
Abstract:
System og natur
Liv Lundberg
Nordlit : Tidsskrift i litteratur og kultur , 2004,
Abstract:
Forestillinger om familien(e) i norsk samtidslitteratur med utgangspunkt i Tom Egil Hvervens bok: lese etter familien – Fors k om norsk litteratur p 1990-tallet, Tiden 1999
Liv Lundberg
Nordlit : Tidsskrift i litteratur og kultur , 2006,
Abstract:
Forestillinger om familien(e) i norsk samtidslitteratur med utgangspunkt i Tom Egil Hvervens bok: lese etter familien – Fors k om norsk litteratur p 1990-tallet, Tiden 1999
Liv Lundberg
Nordlit : Tidsskrift i litteratur og kultur , 2006,
Abstract:
Former for flukt - lesning av Oddmund Hagens 90- tallsprosa
Liv Lundberg
Nordlit : Tidsskrift i litteratur og kultur , 2003,
Abstract: Mitt utgangspunkt her er Oddmund Hagens bok nr. 14, Flukt (2002) som har genrebestemmelsen novelle. Sitatet "berre i flukt finst det redning" er bokas innledende motto og uttrykker en gedigen p stand; innlysende sann p ene siden (en overmakt m man flykte fra for ikke bli knust), p andre siden h yst diskutabel (noen ganger b r man ta kampen opp for ikke bli drevet p flukt for resten av livet). En flukt kan sikkert f re til redning, men ogs til fortapelse. Uansett vil jeg anta at Oddmund Hagens bok kommer til n rme seg fluktens vesen - eller dens uvesen - med en unders kende holdning, og illustrere dette vesen med ulike fluktsituasjoner enten de skyldes akutte ytre farer, trusler mot menneskeverd og verdighet, eller mer trivielt er man vrer for slippe unna ansvar og forpliktelser.
System og natur
Liv Lundberg
Nordlit : Tidsskrift i litteratur og kultur , 2004,
Abstract:
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