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Wyświetlanie 1-2 z 2
Tytuł:
Residual aluminium in water intended for human consumption
Autorzy:
Krupińska, Izabela
Płuciennik-Koropczuk, Ewelina
Gągała, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/396047.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
potable water
residual aluminium
coagulation
non-prehydrolysed coagulant
environmental factors
epidemiological studies
woda pitna
resztki aluminium
koagulacja
koagulanty niehydrolizowane
czynniki środowiskowe
badania epidemiologiczne
Opis:
Aluminium is one of the environmental factors that may have an impact on Alzheimer's and Parkinson's disease. Some epidemiological studies show a relationship between the concentration of aluminium in drinking water and the incidence of Alzheimer's disease. The article presents and discusses the results of research on the effect of the type and dose of non-prehydrolyzed aluminium coagulants on the concentration of residual aluminium in water intended for human consumption. Aluminium sulphate (VI) and sodium aluminate were tested as coagulants. Analysis of the obtained test results showed that lower concentrations of residual aluminium were found after coagulation with aluminium sulphate (VI), which is hydrolyzed acidally, lowering the pH of the water in the range of 7.47 to 7.12 providing good conditions for the formation of Al(OH)3. A less useful coagulant due to the concentration of residual aluminium was sodium aluminate, which undergoes basic hydrolysis creating conditions for the transition of Al(OH)3 into soluble Al(OH).
Źródło:
Civil and Environmental Engineering Reports; 2019, 29, 4; 248-256
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of the Presence of Iron in Highly Alkaline Polyaluminium Chlorides on the Effectiveness of Precursors of Disinfection By-Products Removal
Autorzy:
Krupińska, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/27314882.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
humic acid
polyaluminium chlorides
organic substances
fulvic acids
iron-organic complexes
protective colloids
kwas humusowy
chlorek poliglinu
substancje organiczne
kwasy fulwowe
kompleksy żelazowo-organiczne
koloidy ochronne
Opis:
The mechanism of coagulation with highly alkaline polyaluminum chlorides is well understood, but there is a lack of information on the effect of the presence of iron in these coagulants on the efficiency of purifying water with increased contents of natural organic matters among which humic substances are precursors of disinfection by-products. The dissolved forms of organic substances are the most problematic with regard to water treatment because major concern is the formation of disinfection by products resulting from reactions between dissolved organic matter fractions and disinfectants. The aim of this study was to evaluate the effectiveness of precursors of disinfection by-products removal using highly alkaline polyaluminium chlorides that had different alkalinity and iron content. In the water after the coagulation process a value of SUVA254 was calculated because this indicator correlates well with dissolved organic matter reactivity and disinfection by-products. The analysis of the obtained results showed that the effectiveness of dissolved organic matter removal was determined by the formation of colored iron-organic complexes.
Źródło:
Civil and Environmental Engineering Reports; 2023, 33, 1; 109--121
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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