Blar i NIVA Open Access Archive på forfatter "Umar, Muhammad"
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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 ... -
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 ... -
From Conventional Disinfection to Antibiotic Resistance Control—Status of the Use of Chlorine and UV Irradiation during Wastewater Treatment
Umar, Muhammad (Peer reviewed; Journal article, 2022)Extensive use of antibiotics for humans and livestock has led to an enhanced level of antibiotic resistance in the environment. Municipal wastewater treatment plants are regarded as one of the main sources of antibiotic-resistant ... -
Integrative Review of Decentralized and Local Water Management Concepts as Part of Smart Cities (LoWaSmart)
Umar, Muhammad; Uhl, Wolfgang (NIVA-rapport;7058, Research report, 2016)An evidence-based assessment of decentralized and local water management concepts and how they relate to smart city concepts is presented. Decentralized water management is based on the principle of integrated water cycle ... -
Microplastics in road dust – characteristics, pathways and measures
Vogelsang, Christian; Lusher, Amy; Dadkhah, Mona Eftekhar; Sundvor, Ingrid; Umar, Muhammad; Ranneklev, Sissel Brit; Eidsvoll, David; Meland, Sondre (NIVA-rapport;7526, Research report, 2020)The expected main contributors to road dust-associated microplastic particles (RAMP) are rubber compounds in tyre treads, polymers used to strengthen the bitumen used in road pavement and thermoplastic elastomers used in ... -
Microplastics in road dust – characteristics, pathways and measures
Vogelsang, Christian; Lusher, Amy L.; Dadkhah, Mona E.; Sundvor, Ingrid; Umar, Muhammad; Ranneklev, Sissel B.; Eidsvoll, David; Meland, Sondre (NIVA-rapport;7526, Research report, 2020)The expected main contributors to road dust-associated microplastic particles (RAMP) are rubber compounds in tyre treads, polymers used to strengthen the bitumen used in road pavement and thermoplastic elastomers used in ... -
Microplastics Removal from a Plastic Recycling Industrial Wastewater Using Sand Filtration
Umar, Muhammad; Singdahl-Larsen, Cecilie; Ranneklev, Sissel Brit (Peer reviewed; Journal article, 2023)The removal of microplastic from wastewater collected from a plastic recycling facility was investigated, using a laboratory scale sand-filter. Wastewater samples were collected before and after the onsite sand-filter, for ... -
Moving from the traditional paradigm of pathogen inactivation to controlling antibiotic resistance in water - Role of ultraviolet irradiation
Umar, Muhammad; Roddick, Felicity; Fan, Linhua (Journal article; Peer reviewed, 2019)Ultraviolet (UV) irradiation has proven an effective tool for inactivating microorganisms in water. There is, however, a need to look at disinfection from a different perspective because microbial inactivation alone may ... -
Municipal Solid Waste Fly Ash-Derived Zeolites as Adsorbents for the Recovery of Nutrients and Heavy Metals—A Review
Vogelsang, Christian; Umar, Muhammad (Journal article; Peer reviewed, 2023)Though fly ash from the incineration of municipal solid waste (MSW-FA) is considered hazardous waste, its huge and increasing volumes and potential value due to high concentrations of salts and heavy metals such as copper ... -
Neutralisation of hydrogen peroxide after delousing events; technology development and environmental risk assessment
Carlsson, Pernilla Marianne; Bamber, Shaw Duncan; Umar, Muhammad; Bechmann, Renée Katrin; Garmo, Øyvind Aaberg; Bahr, Gjermund; Tassara, Luca; Gomiero, Alessio; Nøst, Ole Anders; Refseth, Gro Harlaug (NIVA-rapport;7635, Research report, 2021)The present project has conducted experiments in laboratory and pilot scale with chemical neutralisation of hydrogen peroxide, which, in combination with technological treatment pose a possible solution for onboard well ... -
Reductive and Oxidative UV Degradation of PFAS - Status, Needs and Future Perspectives
Umar, Muhammad (Peer reviewed; Journal article, 2021)Perfluoroalkyl and polyfluoroalkyl substances (PFASs) consist of a group of environmentally persistent, toxic and bio-accumulative organic compounds of industrial origin that are widely present in water and wastewater. ...