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Showing 1 to 15 of 15 for “"SUVA"”.
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Removal of dissolved organic carbon and organic halide precursors by enhanced coagulation
… water DOC and specific ultraviolet absorbance (SUVA); for predicting TOC removal by enhanced coagulation, and 3) determination of the relationship between DOC and NPDOX concentration in raw and treated waters. For all of the utilities, enhanced coagulation was effective at meeting the proposed …
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Identification and quantification of natural organic matter in the Windhoek operating company water treatment plant in Windhoek, Namibia
… at 254 nm (UV254) and specific UV absorbance (SUVA) measurements were performed on the day of sampling. The molecular weight distribution of the organic fractions was determined using high pressure size exclusion chromatography (HPSEC) with fluorescence and UV detection methods. Raw water …
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Multiple Linear Model Selection: A Data Study on the Ecological Controls on Methylmercury Production
… carbon (DOC), specific ultra-violet absorbance (SUVA), logarithm transformation of conductivity (Cond) and sulfate (SO_4) impacted methylmercury concentrations in our model. The best fitted model I selected was log (MeHg) = β_0+ β_1Temp + β_2log (Cond) + β_3log (SO_4) + β_4DOC + β_5SUVA + ε
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Ozone and biofiltration as an alternative to reverse osmosis for removing PPCPs and EDCs from wastewater
… determine steady state conditions, TOC, UV254, SUVA, and BDOC removal were evaluated. This study also investigated the removal of microconstituents using a reverse osmosis (RO) system that ran concurrent to the Ozone/BAF treatment train for two of the ozone doses. The concentrations of the …
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Kinetics and Speciation of Brominated Disinfection by -Products During Ozonation
… was correlated to both Specific UV absorbance (SUVA) and specific phenolic content. The apparent second-order rate constants for the reaction between HOBr and NOM ranged from 3 x 105 to 1.0 x 106 M-1 •s-1. Although preozonation tended to reduce it, the fast reaction component for HOBr …
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Synergy of Alum and Chlorine Dioxide for Curbing Disinfection Byproduct Formation Potential at Central Arkansas Water
… demand (r<sup>2</sup> = 0.41) and TCM and SUVA<sub>254</sub> (r<sup>2</sup> = 0.67). The strong correlations between DBPFP and F<sub>MAX</sub> indicate that fluorescence-PARAFAC analysis may be a useful screening tool to evaluate strategies (e.g., set chlorine dioxide and alum doses) to …
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Photochemically produced reactive species generation by extracellular organic matter sensitizers from Chlamydomonas reinhardtii
… organic carbon (DOC) and specific UV absorbance (SUVA). EOM-sensitized reactive species photogeneration in comparison to other DOM sources was also discussed along with implications for the fate of contaminants, EOM, and culture stability in photobioreactors.
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Removal of disinfection by-product precursors by activated carbon and MIEX(R)
… found to decrease formation of brominated DBPs. SUVA, UV254, DOC, and chlorine demand were all investigated as surrogate parameters for DBPs. UV254 was found to correlate best with DBP formation with 0.56<R2<0.80. UV254 absorbed by HPO NOM was found to correlate best with TTHM FP (R2=0.88) with …
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Dissolved Organic Matter Characterization and Impact on Mercury Binding in an Urbanizing Watershed
… from 668 Da (forest) to 209 Da (influent), SUVA<sub>254</sub> ranged from 3.17 (forest) to 0.02 (influent) L mg<sup>-1 </sup>m<sup>-1</sup>, and FI ranged from 1.2 (forest) to 1.8 (effluent). Spectral properties of the forest site represented those for a terrestrial source while those for …
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The distribution and ecology of invasive ant species in the Pacific region
… habitat partitioning was evident at Colo-i-Suva Park in Fiji, where distinct ant communities were sampled from litter and canopy habitats. Results suggested that body size, habitat and resource utilisation interact to create opportunities for invasion, and influence the susceptibility of …
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Modeling Of Membrane Solute Mass Transfer In Ro/nf Membrane Systems
… study. Membrane surface characteristics, NOM and SUVA measurements were used to describe mass transfer in a low pressure RO integrated membrane system. Inorganic and organic solute and water mass transfer coefficients were systematically investigated for dependence on membrane surface properties …
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Comprehensive Analysis of Effluent Organic Matter from Five Wastewater Treatment Plants in Connecticut and Comparison to Natural Organic Matter
<p>Natural organic matter is an important driver of biotic and abiotic processes in aquatic environments. Wastewater treatment plants discharge a substantial amount of organic matter into the environment; however effluent organic matter has not been well studied. In this study, traditional organic …
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Fiji and the franchise : a history of political representation, 1900-1937
… principle, both in t.he Municipal boards of Suva and Levuica and in the Legislative Council. Chapters VIII and IX detail the steps towards constitutional retrogression and attempt to fathom the reasons behind the action. While the municipal franchise was abolished the compromise authorized by …
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Fiji and the franchise : a history of political representation, 1900-1937
… principle, both in t.he Municipal boards of Suva and Levuica and in the Legislative Council. Chapters VIII and IX detail the steps towards constitutional retrogression and attempt to fathom the reasons behind the action. While the municipal franchise was abolished the compromise authorized by …