Biochar and zero-valent iron sand filtration simultaneously removes contaminants of emerging concern and Escherichia coli from wastewater effluent

Bactericidal effect of zero-valent iron nanoparticles on Escherichia coli.

Zero-valent iron nanoparticles (nano-Fe0) in aqueous solution rapidly inactivated Escherichia coli. A strong bactericidal effect of nano-Fe0 was found under deaerated conditions, with a linear correlation between log inactivation and nano-Fe0 dose (0.82 log inactivation/mg/L nano-Fe0 x h). The inactivation of E. coli under air saturation required much higher nano-Fe0 doses due to the corrosion ...

Pharmaceutical Wastewater Effluent—Source of Contaminants of Emerging Concern: Phytotoxicity of Metronidazole to Soybean (Glycine max)

Industrial discharge of active pharmaceutical ingredients (APIs) into the environment in some middle- and low-income countries is not sufficiently regulated. The phytotoxicity of metronidazole (FLAGYL)-one of the most commonly used over the counter (OTC) antibiotics, to soybean (Glycine max) is investigated. Relative growth rate (RGR) expressed in gram per gram per day (gg-1d-1) was applied to ...

Contaminants of Emerging Concern

Contaminants of emerging concern, or CECs, can be broadly defined as chemicals that have been recently detected in the environment and that may pose public health or ecological risks. CECs encompass a wide variety of chemicals, including pharmaceuticals and household chemicals. Many CECs differ from conventional environmental contaminants such as pesticides, metals, polychlorinated biphenyls (P...

Contaminants of Emerging Concern in Effluents from Wastewater Treatment Plants in the Lake Simcoe Watershed

Emerging chemical contaminants in water and wastewater.

Recent advances in environmental analytical chemistry have resulted in an explosion of knowledge regarding the presence of previously undetectable chemical contaminants in water and wastewater. Many of these contaminants are anthropogenic, resulting from commercial products from human society and subsequently dispersed throughout the aquatic environment, passing between wastewater effluents, na...