Disinfection byproduct formation in reverse-osmosis concentrated and lyophilized natural organic matter from a drinking water source

Pressman, Jonathan G.; McCurry, Daniel L.; Parvez, Shahid; Rice, Glenn; Teuschler, Linda K.; Miltner, Richard J.; Speth, Thomas F.

doi:10.1016/j.watres.2012.07.020

Cited by 15 publications

(10 citation statements)

References 25 publications

(51 reference statements)

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“…Although most carbon exists in the form of organic materials in water, the TOC reflects the organic pollution level. In general, as the concentration of TOC in raw water increases, the concentration of DBPs also increases42. Research has noted that there are correlations between water parameters and genotoxicity434445.…”

Section: Discussionmentioning

confidence: 99%

Mutagenicity of drinking water sampled from the Yangtze River and Hanshui River (Wuhan section) and correlations with water quality parameters

Yang

et al. 2015

Sci Rep

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A total of 54 water samples were collected during three different hydrologic periods (level period, wet period, and dry period) from Plant A and Plant B (a source for Yangtze River and Hanshui River water, respectively), and several water parameters, such as chemical oxygen demand (COD), turbidity, and total organic carbon (TOC), were simultaneously analyzed. The mutagenicity of the water samples was evaluated using the Ames test with Salmonella typhimurium strains TA98 and TA100. According to the results, the organic compounds in the water were largely frame-shift mutagens, as positive results were found for most of the tests using TA98. All of the finished water samples exhibited stronger mutagenicity than the relative raw and distribution water samples, with water samples collected from Plant B presenting stronger mutagenic strength than those from Plant A. The finished water samples from Plant A displayed a seasonal-dependent variation. Water parameters including COD (r = 0.599, P = 0.009), TOC (r = 0.681, P = 0.02), UV254 (r = 0.711, P = 0.001), and total nitrogen (r = 0.570, P = 0.014) exhibited good correlations with mutagenicity (TA98), at 2.0 L/plate, which bolsters the argument of the importance of using mutagenicity as a new parameter to assess the quality of drinking water.

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Section: Discussionmentioning

confidence: 99%

Mutagenicity of drinking water sampled from the Yangtze River and Hanshui River (Wuhan section) and correlations with water quality parameters

Yang

et al. 2015

Sci Rep

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“…NOM characterization methods used in these studies included TOC, UV 254 , disinfection byproducts, fluorescence spectroscopy, HPLC-size exclusion chromatography, and elemental analysis. The results of multiple studies generally demonstrated the lyophilized reconstituted NOM was similar to the source NOM and could be used as a standardized NOM source for research studies (McCurry et al, 2011;Pressman et al, 2012).…”

Section: Introductionmentioning

confidence: 89%

“…The pH of the NOM solution was adjusted to a near neutral pH of 6.8 using NaOH to simulate natural water. NOM produced with these procedures was validated as representative of the source NOM for the water quality parameters typically measured in drinking water systems, including total organic carbon (TOC), ultraviolet at 254 nm (UV 254 ), and a suite of disinfection byproducts (Pressman et al, 2012;Rossman, 2014). In this study, the NOM samples were collected in January (OR-NOM-Jan) and July (OR-NOM-July) to show seasonal variations.…”

Section: Concentration Lyophilization and Reconstitution Of Ohio Rimentioning

confidence: 99%

“…The fractionated SRHA, though standardized, does not provide a good representation of surface water relevant NOM. Therefore, it is necessary to assess the impacts of the NOMs that were isolated from the source and validated for the characteristics of drinking water interest (McCurry et al, 2011;Pressman et al, 2012). NOM characterization methods used in these studies included TOC, UV 254 , disinfection byproducts, fluorescence spectroscopy, HPLC-size exclusion chromatography, and elemental analysis.…”

Section: Introductionmentioning

confidence: 99%

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Effects of source and seasonal variations of natural organic matters on the fate and transport of CeO2 nanoparticles in the environment

Sahle‐Demessie

Hassan

et al. 2017

Science of The Total Environment

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Natural organic matter (NOM) affects the stability and transport of nanoparticles (NPs) in natural waters by modifying their physiochemical properties. Source location, and seasonal variations, influence their molecular, physical and electrical charge properties. To understand the variations of NOM on the mobilization of NPs, large volumes of water were collected from the Ohio River (OR) over winter and summer seasons and dissolved NOMs were concentrated. The chemical and structural differences of these NOMs were compared with the Suwannee River humic acid (SRHA) SRHA using H andC nuclear magnetic resonance spectroscopy, and Fourier transforms infrared (FTIR) spectroscopy. Thermal analysis and FTIR confirmed that differences in composition, structure, and functional groups are a result of SRHA fractionation compared to whole molecule OR-NOM. The influence of OR-NOMs on the surface charge of CeO NPs and the effects on the transport and retention in a three-phase (deposition-rinse-re-entrainment) sand-packed columns were investigated at CeO NPs initial concertation of 10ppm, pH6.8, increasing ionic strength (3, 5, and 10mM), retention time of 1min, and increasing NOM concentration (1, 5, and 10ppm). The summer OR-NOM showed higher stabilization and mobilization effect on the CeO than the winter NOM; while their effect was very different form the SRHA. The stabilization of NPs is attributed to both electrostatic and steric effects. The differences in the chemical structure of the complex and heterogeneous NOMs showed disparate reactivity and direct impact on CeO-NPs stability. Using SRHA to study the effect of NOM for drinking water related assessment does not sufficiently represent the natural conditions of the environment.

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“…Before the start of the RO study, approximately 50 gal of the feed water was drained into a 55‐gal stainless steel drum equipped with a mixer for use in the GAC RSSCT evaluations. Dehydrated natural organic matter (NOM) of Ohio River water was rehydrated, filtered, and added to the 55‐gal drum to increase the total organic carbon (TOC) of the water to above 1 mg/L for the GAC media studies (Pressman et al, ).…”

Section: Methodsmentioning

confidence: 99%

Effectiveness of point‐of‐use/point‐of‐entry systems to remove per‐ and polyfluoroalkyl substances from drinking water

Patterson

Burkhardt

Schupp³

et al. 2019

AWWA Water Science

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The contamination of groundwater sources with per- and polyfluoroalkyl substances (PFAS) in the United States is a widespread problem for the drinking water industry. Well water supplies in the municipalities of Fountain, Security, and Widefield, Colorado, contain perfluorooctanoic acid and perfluorooctane sulfonate levels greater than the U.S. Environmental Protection Agency (USEPA) health advisory level of 70 ng/L. The source of PFAS has been associated with aqueous film-forming foam at Peterson Air Force Base. To assist property owners and limit the exposure of PFAS to residential drinking water systems, treatability studies were conducted by the USEPA on the PFAS removal effectiveness of commercially available point-of-use/point-of-entry units using reverse osmosis treatment and granular activated carbon adsorbents. Household water systems were tested with a test water containing the water quality characteristics and six PFAS contaminants found in Widefield aquifer region groundwater samples. This study also documents the installation, startup, and continuous/intermittent operation of the treatment systems.

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Disinfection byproduct formation in reverse-osmosis concentrated and lyophilized natural organic matter from a drinking water source

Cited by 15 publications

References 25 publications

Mutagenicity of drinking water sampled from the Yangtze River and Hanshui River (Wuhan section) and correlations with water quality parameters

Mutagenicity of drinking water sampled from the Yangtze River and Hanshui River (Wuhan section) and correlations with water quality parameters

Effects of source and seasonal variations of natural organic matters on the fate and transport of CeO2 nanoparticles in the environment

Effectiveness of point‐of‐use/point‐of‐entry systems to remove per‐ and polyfluoroalkyl substances from drinking water

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