Matches in SemOpenAlex for { <https://semopenalex.org/work/W2039046828> ?p ?o ?g. }
Showing items 1 to 88 of
88
with 100 items per page.
- W2039046828 abstract "Nitrogen compounds in seawater are now contributing to serious water pollution problems. In this study, continuous removal of nitrogen in seawater using nitrifiers and denitrifiers immobilized in macro-porous cellulose carrier “AQUACEL” was examined. In nitrification, the nitrite oxidation step becomes the rate limiting step unless an influent inorganic carbon (g) / influent NH4-N (g) ratio (IC/NH4-N) of 7.23 is maintained. This is equivalent to an influent alkalinity (g) / influent NH4-N (g) ratio (ALK/NH4-N) of 8.25. Nitrite oxidizers were also sensitive to change in NH4-N loading. Unlike other biological removal systems used for seawater, trace element solution (containing Mo, Cu, Mn, Co, Fe, etc.) was added only at a high NH4-N loading rate of 0.65 kg-N/m3/carrier/d (at NH4-N concentration of 40 g/m3) and acclimatizing period was short, i.e., about a week. The maximum NH4-N loading rate obtained which removed 99 to 100% of the nitrogen compounds, was 1.30 kg-N/m3/carrier/d. For completion of denitrification, an influent phosphorus (g) per influent NO3-N(g) ratio (P/NO3-N) of 0.03 was required. Trace element solution (containing Fe, Mn, Mo, etc.) was doubled to 0.02% at NO3-N concentration of 560 g/m3. In addition, methanol concentration must be maintained at 30% more of the theoretical value of carbon concentration requirements. Copper enhanced nitrite reduction at an influent Cu(g) per influent NO3-N(g) ratio (Cu/NO3-N) of 0.002. The maximum allowable NO3-N loading rate necessary to remove about 99 to 100% of the nitrogen compounds was 20.79 kg-N/m3/carrier/d. This study reveakls that the AQUACEL system has high nitrifying and denitrifying capacities. The nitrogen loading capacity of denitrification is about ten times that of nitrification and is comparable to that of freshwater which also employed the AQUACEL system. In contrast, nitrogen loading capacity of nitrification is about six times less than that of freshwater, which indicates a higher sensitivity of nitrifiers to salinity. This indficates high sensitivity of the immobilized nitrifying bacteria to salinity. Morphological observations show that the ammonia oxidizers are a mixed culture of Nitrosomonas spp . and Nitrosovibrio spp ., while the nitrite oxidizer is a Nitrobacter spp . The immobilized denitrifying bacteria showed similar morphological characteristics to the Hyphomicrobium spp ." @default.
- W2039046828 created "2016-06-24" @default.
- W2039046828 creator A5042907763 @default.
- W2039046828 creator A5072804809 @default.
- W2039046828 creator A5081250111 @default.
- W2039046828 date "1996-01-01" @default.
- W2039046828 modified "2023-09-23" @default.
- W2039046828 title "Nitrogen removal in seawater using nitrifying and denitrifying bacteria immobilized in porous cellulose carrier" @default.
- W2039046828 cites W1245937 @default.
- W2039046828 cites W1508568519 @default.
- W2039046828 cites W1524940283 @default.
- W2039046828 cites W1582449237 @default.
- W2039046828 cites W1971938501 @default.
- W2039046828 cites W2009007034 @default.
- W2039046828 cites W2041473614 @default.
- W2039046828 cites W2128852368 @default.
- W2039046828 cites W1712469595 @default.
- W2039046828 doi "https://doi.org/10.1016/s0273-1223(96)00754-8" @default.
- W2039046828 hasPublicationYear "1996" @default.
- W2039046828 type Work @default.
- W2039046828 sameAs 2039046828 @default.
- W2039046828 citedByCount "17" @default.
- W2039046828 countsByYear W20390468282013 @default.
- W2039046828 countsByYear W20390468282014 @default.
- W2039046828 countsByYear W20390468282015 @default.
- W2039046828 crossrefType "journal-article" @default.
- W2039046828 hasAuthorship W2039046828A5042907763 @default.
- W2039046828 hasAuthorship W2039046828A5072804809 @default.
- W2039046828 hasAuthorship W2039046828A5081250111 @default.
- W2039046828 hasConcept C107872376 @default.
- W2039046828 hasConcept C13965031 @default.
- W2039046828 hasConcept C164752452 @default.
- W2039046828 hasConcept C178790620 @default.
- W2039046828 hasConcept C179104552 @default.
- W2039046828 hasConcept C185592680 @default.
- W2039046828 hasConcept C18903297 @default.
- W2039046828 hasConcept C197011783 @default.
- W2039046828 hasConcept C197248824 @default.
- W2039046828 hasConcept C2776179834 @default.
- W2039046828 hasConcept C2776384668 @default.
- W2039046828 hasConcept C2781295145 @default.
- W2039046828 hasConcept C45812177 @default.
- W2039046828 hasConcept C537208039 @default.
- W2039046828 hasConcept C73593433 @default.
- W2039046828 hasConcept C86803240 @default.
- W2039046828 hasConceptScore W2039046828C107872376 @default.
- W2039046828 hasConceptScore W2039046828C13965031 @default.
- W2039046828 hasConceptScore W2039046828C164752452 @default.
- W2039046828 hasConceptScore W2039046828C178790620 @default.
- W2039046828 hasConceptScore W2039046828C179104552 @default.
- W2039046828 hasConceptScore W2039046828C185592680 @default.
- W2039046828 hasConceptScore W2039046828C18903297 @default.
- W2039046828 hasConceptScore W2039046828C197011783 @default.
- W2039046828 hasConceptScore W2039046828C197248824 @default.
- W2039046828 hasConceptScore W2039046828C2776179834 @default.
- W2039046828 hasConceptScore W2039046828C2776384668 @default.
- W2039046828 hasConceptScore W2039046828C2781295145 @default.
- W2039046828 hasConceptScore W2039046828C45812177 @default.
- W2039046828 hasConceptScore W2039046828C537208039 @default.
- W2039046828 hasConceptScore W2039046828C73593433 @default.
- W2039046828 hasConceptScore W2039046828C86803240 @default.
- W2039046828 hasLocation W20390468281 @default.
- W2039046828 hasOpenAccess W2039046828 @default.
- W2039046828 hasPrimaryLocation W20390468281 @default.
- W2039046828 hasRelatedWork W134247031 @default.
- W2039046828 hasRelatedWork W1596749601 @default.
- W2039046828 hasRelatedWork W1856219842 @default.
- W2039046828 hasRelatedWork W1970292831 @default.
- W2039046828 hasRelatedWork W1970685772 @default.
- W2039046828 hasRelatedWork W1972270430 @default.
- W2039046828 hasRelatedWork W2019188848 @default.
- W2039046828 hasRelatedWork W2022852698 @default.
- W2039046828 hasRelatedWork W2024646323 @default.
- W2039046828 hasRelatedWork W2025445032 @default.
- W2039046828 hasRelatedWork W2041473614 @default.
- W2039046828 hasRelatedWork W2052428308 @default.
- W2039046828 hasRelatedWork W2054062292 @default.
- W2039046828 hasRelatedWork W2328169614 @default.
- W2039046828 hasRelatedWork W2354343130 @default.
- W2039046828 hasRelatedWork W2363741246 @default.
- W2039046828 hasRelatedWork W2384316987 @default.
- W2039046828 hasRelatedWork W2411943550 @default.
- W2039046828 hasRelatedWork W3144462128 @default.
- W2039046828 hasRelatedWork W341141521 @default.
- W2039046828 isParatext "false" @default.
- W2039046828 isRetracted "false" @default.
- W2039046828 magId "2039046828" @default.
- W2039046828 workType "article" @default.