Title : Removal of Aichi (AiV), Adenovirus 41 (Ad41), and Hepatitis A viruses from drinking water by Zero-valent iron (ZVI) containing reverse osmosis membrane reactor

Abstract:

The quality of drinking water have been recognized as increasingly critical issues for the coming decades. Among the factors that contribute to the looming water crisis are continued population growth and urbanization, deteriorating water infrastructure, increasing influence of wastewater and biosolids on drinking water sources, growing number of emerging contaminants  due to climate change. The conventional water treatment processes, which are based on rapid sand filtration and chlorination and have stayed largely unchanged for decades, can adequately remove the many chemical and micrombial contaminants simultaneously. Among the problems facing water utilities and regulators, one particularly daunting challenge is how to control microbial pathonogens, disinfection by-products and residual disinfectants simultaneously – and to do so at an acceptable cost. On the one hand, high dosage of chlorine can produce high chlorine residuals and high levels ofdisinfection by products  including trihalomethanes, haloacetic acids, and haloacetonitriles. These cause cansirogenic effects in humans. In this study a reverse osmosis membrane containing zero-valent iron (ZVI) has been shown to remove the Aichi (AiV), the Adenovirus 41 (Ad41), and Hepatitis A viruses  from groundwater, which suggests that it may be potentially useful for drinking water treatment.  The effects of  some operational conditions like  pressure ( 4, 10,15 and 25 bar)  and  permeate flux ( 2, 15 and 35  L/m2.h) on the removals of pollutants ana viruses were investigated. Removal efficiencies between 4.5 and 6 logs for all viruses was detected at apermeate flux of 36 L/m2.h and  a pressure  25 bar. Total organic matter , dissolved organic carbon,SO4-2-  ana  NO3-1 removals were 98%.

Keywords. Drinking water, Aichi (AiV), Adenovirus 41 (Ad41) Hepatitis A, viruse Zero-valent iron (ZVI)  reverse osmosis, membrane reactor 

Biography:

Dokuz Eylül University, Department of Environmental Engineering. Scientific study topics are; Environmental engineering microbiology, Environmental engineering ecology, Treatment of fluidized bed and activated sludge systems, Nutrient removal, Activated sludge microbiology, Environmental health, Industrial toxicity and toxicity studies, The effect of heavy metals on microorganisms, Treatment of toxic compounds by anaerobic / aerobic sequential processes, Anaerobic treatment of organic chemicals that cause industrial toxicity and wastewater containing them, Anaerobic treatability of wastewater containing dyes, Treatment of antibiotics with anaerobic and aerobic sequential systems, Anaerobic and aerobic treatment of domestic organic wastes with different industrial treatment sludges, Treatment of polyaromatic compounds with bio-surfactants in anaerobic and aerobic environments, Treatment of petrochemical, Textile and olive processing industry wastewater by sonication, Treatment of olive processing industry wastewater with nanoparticles and the toxicity of nanoparticles. She has many international publications