Tamar Kohn

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Related publications (102)

A modeling approach to estimate the solar disinfection of viral indicator organisms in waste stabilization ponds and surface waters

Sunlight is known to be a pertinent factor governing the infectivity of waterborne viruses in the environment. Sunlight inactivates viruses via endogenous inactivation (promoted by absorption of UVB sunlight by the virus) and exogenous processes (promoted ...

Elsevier2016

Genetic, structural and phenotypic properties of MS2 coliphage with resistance to ClO2 disinfection

Tamar Kohn, Anna Carratala Ripolles, Virginie Bachmann, Sergey Nazarov, Petr Leiman, Qingxia Zhong, Ricardo Cesar Guerrero Ferreira, Laura Piccinini

Common water disinfectants like chlorine have been reported to select for resistant viruses, yet little attention has been devoted to characterizing disinfection resistance. Here, we investigated the resistance of MS2 coliphage to inactivation by chlorine ...

Amer Chemical Soc2016

Bacteria inactivation during the drying of struvite fertilizers produced from stored urine

Tamar Kohn, Loïc Decrey, Simon Schindelholz, Manfred Schoger, Kai Udert

Human urine can be processed into market-attractive fertilizers like struvite; however, concerns regarding the microbial safety of such products remain. The present study evaluated the inactivation of in situ heterotrophs, total bacteria as observed by flo ...

Amer Chemical Soc2016

Ammonia as an in-situ sanitizer: influence of virus genome type on inactivation

Tamar Kohn, Loïc Decrey, Shinobu Kazama

Treatment of human excreta and animal manure (HEAM) is key in controlling the spread of persistent enteric pathogens such as viruses. The extent of virus inactivation during HEAM storage and treatment appeared to vary with virus genome type, though the rea ...

American Society for Microbiology2016

Solar disinfection (SODIS) of viruses in PET bottles

Tamar Kohn, Anna Carratala Ripolles, Michael Jon Mattle, Alex Dionisio Calado

Solar disinfection of drinking water in PET bottles (SODIS) is a simple point-of-use technique efficient for the inactivation of many bacterial pathogens. In contrast, the efficiency of SODIS toward viruses is not well known. In this work, we studied the i ...

American Society for Microbiology2016

Super-fine powdered activated carbon (SPAC) for efficient removal of micropollutants from wastewater treatment plant effluent

Tamar Kohn, Florence Bonvin, Livia Jost, Léa Cécile Randin

In an effort to mitigate the discharge of micropollutants to surface waters, adsorption of micropollutants onto powdered activated carbon (PAC) after conventional wastewater treatment has been identified as a promising technology for enhanced removal of ph ...

Elsevier2016

Viruses at solid-water interfaces: A systematic assessment of interactions driving adsorption

Tamar Kohn, Anne Thérèse Sigstam, Meret Aeppli, Antonius Magdi Hakeem Armanious, Dominik Refardt

Adsorption to solid-water interfaces is a major process governing the fate of waterborne viruses in natural and engineered systems. The relative contributions of different interaction forces to adsorption and their dependence on the physicochemical propert ...

Amer Chemical Soc2016

Inactivation kinetics and mechanisms of viral and bacterial pathogen surrogates during urine nitrification

Tamar Kohn, Ariane Schertenleib, Kai Udert

This paper assesses the inactivation performance and mechanisms in urine nitrification reactors using bacteria and bacteriophages as surrogates for human pathogens. Two parallel continuous-flow moving bed biofilm reactors (MBBRs) were operated over a two-m ...

Royal Soc Chemistry2015

Technologies for the treatment of source-separated urine in the eThekwini Municipality

Tamar Kohn, Linda Strande, Kai Udert, Bastian Etter

In recent years, a large number of urine-diverting dehydration toilets (UDDTs) have been installed in eThekwini to ensure access to adequate sanitation. The initial purpose of these toilets was to facilitate faeces drying, while the urine was diverted into ...

2015

Pathogens and pharmaceuticals in source-separated urine in eThekwini, South Africa

Tamar Kohn, Linda Strande, Kai Udert, Christa McArdell

In eThekwini, South Africa, the production of agricultural fertilizers from human urine collected from urine-diverting dry toilets is being evaluated at a municipality scale as a way to help finance a decentralized, dry sanitation system. The present study ...

Elsevier2015

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A modeling approach to estimate the solar disinfection of viral indicator organisms in waste stabilization ponds and surface waters

Tamar Kohn, Michael Jon Mattle

Elsevier2016

Genetic, structural and phenotypic properties of MS2 coliphage with resistance to ClO2 disinfection

Tamar Kohn, Anna Carratala Ripolles, Virginie Bachmann, Sergey Nazarov, Petr Leiman, Qingxia Zhong, Ricardo Cesar Guerrero Ferreira, Laura Piccinini

Amer Chemical Soc2016

Super-fine powdered activated carbon (SPAC) for efficient removal of micropollutants from wastewater treatment plant effluent

Tamar Kohn, Florence Bonvin, Livia Jost, Léa Cécile Randin

Elsevier2016