Disinfection by-products in Croatian drinking water supplies with special emphasis on the water supply network in the city of Zagreb

Kurajica, Livia; Bošnjak, Magdalena Ujević; Stankov, Mirjana Novak; Kinsela, Andrew S.; Štiglić, Jurica; Waite, David; Capak, Krunoslav

doi:10.1016/j.jenvman.2020.111360

Cited by 16 publications

(9 citation statements)

References 55 publications

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“…The concentrations of anions (F − , Cl − , NO 45 was used for determining HAAs (monochloroacetic acid (MCAA), dichloroacetic acid (DCAA), trichloroacetic acid (TCAA), monobromoacetic acid (MBAA) and dichloroacetic acid (DCAA)) (GC-ECD Thermo Fisher Scientific Trace 1300, Waltham, Massachusetts, USA). Further details on the methods used are available in Kurajica et al (2020). 46 A spectrofluorometer (Horiba Aqualog Jobin Yvonn, Kyoto,…”

Section: Physico-chemical Analysis Of Tap Water and Water From Experi...mentioning

confidence: 99%

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Heavy metal, organic matter, and disinfection byproduct release from drinking water pipe scales under stagnant conditions

Kurajica

Bošnjak

Kinsela

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Physico-chemical Analysis Of Tap Water and Water From Experi...mentioning

confidence: 99%

“…Further details on the methods used are available in Kurajica et al (2020). 46 A spectrofluorometer (Horiba Aqualog Jobin Yvonn, Kyoto,…”

Section: Physico-chemical Analysis Of Tap Water and Water From Experi...mentioning

confidence: 99%

Heavy metal, organic matter, and disinfection byproduct release from drinking water pipe scales under stagnant conditions

Kurajica

Bošnjak

Kinsela

et al. 2023

Environ. Sci.: Water Res. Technol.

Self Cite

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“…The data presented a positively skewed distribution, which is characterized by having a large amount of data in the low ranges of the parameter compared to the higher ranges. Therefore, to evaluate the correlation between the variables, Spearman's non-parametric test was used (Kurajica et al 2020).…”

Section: Correlation Of Independent Variables With Thms In Treated Watermentioning

confidence: 99%

Modeling the formation of trihalomethanes in rural and semi-urban drinking water distribution networks of Costa Rica

Kelly-Coto

Jiménez

Mora-Campos

et al. 2022

Environ Sci Pollut Res

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Chlorination is one of the most important stages in the treatment of drinking water due to its effectiveness in the inactivation of pathogenic organisms. However, the reaction between chlorine and natural organic matter (NOM) generates harmful disinfection by-products (DBPs), such as trihalomethanes (THMs). In this research, drinking water quality data was collected from the distribution networks of 19 rural and semi urban systems that use water sources as: springs, surfaces, and a mixture of both, in three provinces of the Paci c slope of Costa Rica during April 2018 to September 2019. Twelve models were developed from four data sets: all water sources, spring, surface, and mixture of spring and surface waters. Linear, logarithmic, and exponential multivariate regression models were developed for each data set to predict the concentration of total trihalomethanes (TTHMs) in the distribution networks. Concentrations of TTHMs were found between < 0.20 to 91.31 µg/L, with chloroform being the dominant species accounting for 62% of TTHMs on average. Turbidity, free residual chlorine, total organic carbon (TOC), dissolved organic carbon (DOC) and ultraviolet absorbance at 254 nm (UV 254 ) showed a signi cant correlation with TTHMs. In all the data sets the linear models presented the best goodness-of-t and were moderately robust. Four models, the best of each data set, were validated with data from the same systems, and, according to the criteria of R 2 , SE, MSE and MAE, spring water and mixed spring/surface water models showed a satisfactory level of explanation of the variability of the data. Moreover, the models seem to better predict TTHMs concentrations below 30 µg/L. These models were satisfactory and could be useful for decision-making in drinking water supply systems and be considered in possible modi cations in current legislation. prediction in Costa Rica, and to the best of the authors knowledge in the Central American and Caribbean region. Furthermore, this study was focused in rural and semi urban areas, where no studies was found in the literature.In Costa Rica, 93% of the population received drinking water in 2019 (PEN and CONARE 2020). Moreover, in the same year, 19.4% of homes in rural and semi-urban areas were supplied with water by local Associations Administrators of Aqueduct and Sewerage Systems, (ASADAs in Spanish) (Sánchez-Hernández 2019). In addition, in 2016, 14.3% of the population was supplied by 24 municipalities and the rest by duly organized public companies (AyA 2016). The main water sources used are groundwater, springs, surface water and the mixture of the two latter ones, moreover, in all cases chlorine disinfection is the method used (Arellano-Hartig et al. 2020). In general, due to economic and analytical capacity limitations, monitoring of THMs is scarce, mainly at the ASADAs and municipal level. Thus, the objective of this study was to develop a series of prediction models of TTHMs in the distribution systems of rural and semi-urban areas supplied by springs, surface water and t...

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“…62,77 It is noteworthy that trichloromethane was the dominant DBP compound, with up to 92% of total THMs and up to 47% of the total organic halogen load, 78 observed from chlorination/chloramination in drinking water treatment plants when bromide concentrations were low. 15,70,[79][80][81][82] According to his major presence, THMs and HAAs were investigated in 90% and 50% of the selected articles, respectively (SI, Table S5) and accounted together for 52% of the total established linear relationships (Figure 3). Humic/fulvic-like components play a significant role in the THMs and HAAs formation potential and exhibit strong relationships (Table 2).…”

Section: Established Relationships Between Parafac Components and Dbp...mentioning

confidence: 99%

Fluorescent Dissolved Organic Matter Constituents as Surrogates for Disinfection Byproduct Formation in Drinking Water Treatment: A Critical Review

Fernández-Pascual

Droz

O’Dwyer

et al. 2022

Preprint

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Disinfection byproduct (DBP) formation, prediction and minimization are a crucial issue for the domestic water supply industry, which needs to provide quality and safe drinking water to consumers. Fluorescence excitation−emission matrices-parallel factor analysis (EEM-PARAFAC), is used to characterize and quantify fluorescent dissolved organic matter (DOM) in aquatic systems. EEM-PARAFAC has been identified as a potential method to predict DBP formation in treated waters. However, the method ability for specific DBP classes or species prediction is uncertain. This critical review evaluates the published literature describing empirical relationships between DOM fluorophores identified by PARAFAC components and DBP formation obtained during water disinfection. From 42 selected peer-reviewed articles, 202 established linear relationships (R2 ≥0.5) with DBP classes or species were found. Trihalomethanes (THMs) and haloacetic acids (HAAs), as regulated compounds, were extensively investigated and exhibit a strong relationship. Overall, carbonaceous-DBP classes exhibited strong relationships with humic/fulvic-like components. Conversely, a relationship between nitrogenous-DBP classes and PARAFAC components was less clear, but it was shown to be preferential to protein-like PARAFAC components in the case of algae/bacterial DOM sources. This review highlights the challenges of transposing site-specific or DOM source-specific empirical relationship between PARAFAC component and DBPs formation potential to a global model.

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Disinfection by-products in Croatian drinking water supplies with special emphasis on the water supply network in the city of Zagreb

Cited by 16 publications

References 55 publications

Heavy metal, organic matter, and disinfection byproduct release from drinking water pipe scales under stagnant conditions

Heavy metal, organic matter, and disinfection byproduct release from drinking water pipe scales under stagnant conditions

Modeling the formation of trihalomethanes in rural and semi-urban drinking water distribution networks of Costa Rica

Fluorescent Dissolved Organic Matter Constituents as Surrogates for Disinfection Byproduct Formation in Drinking Water Treatment: A Critical Review

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