Water and wastewater quality research and management pertaining to emerging pollutants, chemical or biological, for which discussion of occurrence surveys, fate and transport investigations, treatment processes, modeling, and/or toxicity/risk assessment appearing in the peerreviewed literature during 2010, are presented.

Nitrobenzene (NB) was spiked into buffered lab water at 5 mM and direct UV and H 2 O 2 -assisted photodegradation were evaluated using both medium-pressure (MP) and low-pressure (LP) ultraviolet (UV) lamps over a range of UV fluences and H 2 O 2 concentrations. MPUV light was found to directly photodegrade nitrobenzene more rapidly than LPUV light, and in both cases loss of NB without UV irradiation (''dark loss'') contributed to the degradation rates. Addition of H 2 O 2 improved degradation kinetics, and both LP and MP lamps performed equally as well over industrially relevant hydrogen peroxide doses (1-25 ppm H 2 O 2 ), resulting in a one-log reduction of NB after 300 mJ cm À2 and 25 ppm H 2 O 2 . Competition kinetics studies using para-chlorobenzoic acid (pCBA) and molinate as probe compounds were performed to quantify the rate of reaction between target analytes [including NB and three nitrophenol isomers (NPs)] and hydroxyl radicals. Bimolecular rate constants could be used to accurately predict the NB degradation observed in this study. This work helps to clarify the quantum yield for the UV photodegradation of nitrobenzene and reports on the feasibility of utilizing a UV-based oxidation process to destroy a US EPA Contaminant Candidate List chemical of concern.

This literature review summarizes publications appearing in 2012 on water and wastewater research pertaining to chemical or biological emerging pollutants. Part I: Occurrence, Fate, and Transport (the companion to this review) includes discussion of occurrence of emerging pollutants, sources of emerging pollutants, fate and transport of emerging pollutants in the environment, monitoring approaches, modeling, and regulatory discussions. Part II: Treatment (this review) includes discussion of various water and wastewater treatment technologies on emerging pollutants.

This literature review summarizes publications appearing in 2011 on water and wastewater research pertaining to chemical or biological emerging pollutants. Part I: Occurrence, Fate, and Transport (the companion to this review) includes discussion of occurrence of emerging pollutants, sources of emerging pollutants, fate and transport of emerging pollutants in the environment, monitoring approaches, modeling, and regulatory discussions. Part II: Treatment (this review) includes discussion of various water and wastewater treatment technologies on emerging pollutants.

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