Browsing NIVA Open Access Archive by Author "Wennberg, Aina Charlotte"
Now showing items 1-16 of 16
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AGD control and disinfection in cleanerfish: Part 2: Challenge trial
Powell, Mark D.; Wennberg, Aina Charlotte (NIVA-rapport;7075, Research report, 2016)Juvenile ballan wrasse, Labrus bergylta were exposed to a Neoparamoeba perurans polyculture either UV irradiated at a low (2mJ cm-2) or high (20mJ cm-2) dose of UV radiation from a medium pressure UV lamp in a beam collimeter. ... -
Application of UV-LEDs for antibiotic resistance genes inactivation – Efficiency monitoring with qPCR and transformation
Umar, Muhammad; Anglès d'Auriac, Marc; Wennberg, Aina Charlotte (Peer reviewed; Journal article, 2021)A dose-response study on a plasmid vector containing ampicillin and kanamycin resistance genes was performed with UVC-LEDs at two different wavelengths (265 and 285 nm) using different UV fluences including 40 mJ/cm2 and ... -
Biofilmdannelse i VAVs ledningsnett med nye Oset vannbehandlingsanlegg
Hem, Lars John; Wennberg, Aina Charlotte; Thorvaldsen, Gøril; Skaar, Ida (Journal article; Peer reviewed, 2013)Det ble i 2012 gjennomført kvalitative og kvantitative målinger av biofilmdannelse i råvann, filtrert vann, rentvann og nettvann i Osets forsyningsområde i Oslo. Målet med biofilmmålingene var å undersøke/dokumentere ... -
Combined membrane filtration and 265 nm UV irradiation for effective removal of cell free antibiotic resistance genes from feed water and concentrate
Krzeminski, Pawel; Feys, Edward; Anglès d'Auriac, Marc; Wennberg, Aina Charlotte; Umar, Muhammad; Schwermer, Carsten Ulrich; Uhl, Wolfgang (Peer reviewed; Journal article, 2020)The removal of cell free DNA (plasmids) carrying antibiotic resistance genes (ARGs) was investigated at bench-scale using ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) membranes commonly applied in ... -
Disinfection of Paramoebae perurans with UV and ozoneIn situ dose-response testing
Wennberg, Aina Charlotte; Powell, Mark (NIVA-rapport;6909, Research report, 2015)Lab cultures of the amoebae Paramoebae perurans was exposed to UV irradiance at varying durations or ozonated seawater with varying residual oxidant (TRO) concentrations. The response to the treatment was observed as both ... -
Diverse land use and the impact on (Irrigation) water quality and need for measures - A case study of a Norwegian river
Johannessen, Gro Skøien; Wennberg, Aina Charlotte; Nesheim, Ingrid; Tryland, Ingun (Journal article; Peer reviewed, 2015)Surface water is used for irrigation of food plants all over the World. Such water can be of variable hygienic quality, and can be contaminated from many different sources. The association of contaminated irrigation water ... -
Effect of water treatment on the growth potential of Vibrio cholerae and Vibrio parahaemolyticus in seawater
Wennberg, Aina Charlotte; Tryland, Ingun; Østensvik, Øyvin; Secic, Indira; Monshaugen, Marte; Liltved, Helge (Journal article; Peer reviewed, 2013)In laboratory experiments we added Vibrio cholerae and Vibrio parahaemolyticus to bottles with seawater previously treated by filtration, UV, chlorine or ozone. The purpose was to investigate the influence of different ... -
Effekt av endret værmønster på hygienisk badevannskvalitet og kvalitet på sjømat i Indre Oslofjord
Tryland, Ingun; Wennberg, Aina Charlotte; Vogelsang, Christian; Tjomsland, Torulv; Beschomer, Anna-Lena; Eregno, Fasil; Robertson, Lucy; Myrmel, Mette; Østensvik, Øyvin (NIVA-rapport;7031, Research report, 2016)Prosjektet Water Quality Tools ble gjennomført i perioden 2012-2015. Målet med prosjektet var å fremskaffe ny kunnskap, analysemetoder og modellverktøy som kan være til nytte i arbeidet med å sikre god badevannskvalitet ... -
Evaluation of factors influencing disinfection efficacy for aquaculture
Wennberg, Aina Charlotte; Martins, Samantha Eslava; Furseth, Kamilla; Tobiesen, August E.Dessen; Hess-Erga, Ole-Kristian (NIVA-rapport;7801-2022, Research report, 2022)Disinfectants falls within the scope of the Biocidal Products Regulation (BPR), however, there are no specific guidance on how to test the efficacy of disinfectants for use in aquaculture. The Norwegian Medicines Agency ... -
Hurtigmetoder for online deteksjon av mikrobiell forurensning i vann
Wennberg, Aina Charlotte; Hultman, Maria Thérése (NIVA-rapport;7288, Research report, 2018)Dagens krav til overvåking av hygienisk vannkvalitet for drikkevann og badevann inkluderer kun dyrkingsmetoder som tar ett til tre døgn å analysere. For bedre å kunne vurdere og håndtere hygienisk risiko er det et ønske ... -
Multi-laboratory validation of a new marine biodegradation screening test for chemical persistence assessment
Ott, Amelie; Martin, Timothy J.; Acharya, Kishor; Lyon, Delina Y.; Robinson, Nik; Rowles, Bob; Snape, Jason R.; Still, Ian; Whale, Graham F.; Albright, Vurtice C.; Bäverbäck, Petra; Best, Nicola; Commander, Ruth; Eickhoff, Curtis; Finn, Sarah; Hidding, Björn; Maischak, Heiko; Sowders, Katherine A.; Taruki, Masanori; Walton, Helen E.; Wennberg, Aina Charlotte; Davenport, Russell J. (Peer reviewed; Journal article, 2020)Current biodegradation screening tests are not specifically designed for persistence assessment of chemicals, often show high inter- and intra-test variability, and often give false negative biodegradation results. Based ... -
Removal of antibiotic resistant E. coli in two Norwegian wastewater treatment plants and by nano- and ultra-filtration processes
Schwermer, Carsten Ulrich; Krzeminski, Pawel; Wennberg, Aina Charlotte; Vogelsang, Christian; Uhl, Wolfgang (Journal article; Peer reviewed, 2018)The effectivity of different treatment stages at two large wastewater treatment plants (WWTPs) located in Oslo, Norway, to remove antibiotic resistant Escherichia coli from municipal wastewater was investigated. The WWTPs ... -
Tiltak for å oppnå bedre hygienisk vannkvalitet til rekreasjonsformål i overvann og byvassdrag - forprosjekt for å identifisere forskningsbehov
Tryland, Ingun; Mæhlum, Trond; Wennberg, Aina Charlotte; Paruch, Adam; Krystad, Rebekka; Paruch, Lisa; Ranneklev, Sissel Brit; Moe, Therese Fosholt; Haande, Sigrid; Myrmel, Mette; Robertson, Lucy; Fergus, Tharan; Beschorner, Anna-Lena; Kvitsjøen, Julia (NIVA-rapport;7190, Research report, 2017)Rapporten omhandler hygienisk vannkvalitet i Oslos byvassdrag, og beskriver mulig sykdomsrisiko knyttet til eksponering for vannet gjennom rekreasjonsaktiviteter. Forekomst av sykdomsfremkallende virus, bakterier og ... -
Unravelling reasons for variability in the OECD 306 marine biodegradation test
Wennberg, Aina Charlotte; Meland, Sondre; Grung, Merete; Lillicrap, Adam David (Peer reviewed; Journal article, 2022)The recommended test for assessing if a chemical can be biodegraded in the marine environment is performed according to the Organisation for Economic Cooperation and Development Marine biodegradation test guideline (OECD ... -
Variations of Drinking Water Quality Influenced by Seasons and Household Interventions: A Case Study from Rural Maharashtra, India
Seifert-Dähnn, Isabel; Nesheim, Ingrid; Gosh, Sambita; Dhawde, Rutuja; Ghadge, Appasaheb; Wennberg, Aina Charlotte (Journal article; Peer reviewed, 2017)The majority of people in rural villages in Maharashtra, India, have access to improved drinking water sources. Nevertheless, the water quality at the point of consumption often does not satisfy the drinking water standard. ... -
Vurdering av mikrobiologiske analysemetoder for å dokumentere mikrobiell barriereeffekt i partikkelfjerningstrinnet på vannbehandlingsanlegg
Wennberg, Aina Charlotte; Eikebrokk, Bjørnar; Myrmel, Mette; Hageskal, Gunhild; Hem, Lars (NIVA-rapport;7492, Research report, 2020)Det er gjennomført innledende tester med flowcytometri og DNA-baserte metoder for å kartlegge om slike metoder er bedre egnet til in-situ målinger og vurderinger av vannbehandlingsanleggs hygieniske barrierer enn de metodene ...