Iron and manganese dynamics in lake water

Zaw, Myint; Chiswell, B.

doi:10.1016/s0043-1354(98)00360-1

Cited by 97 publications

(43 citation statements)

References 5 publications

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“…Tel. : +82 53 950 7585; fax: +82 53 950 6579. of reservoirs often contain such metal ions as reduced forms of Fe 2+ and Mn 2+ or their complexes with natural organic matter (NOM) [6]. In conventional treatment, the oxidation of iron and manganese was thus carried out using various oxidants such as oxygen, chlorine, ozone, or potassium permanganate, the precipitates of which could be then removed by either clarification or sand filtration, or both.…”

Section: Introductionmentioning

confidence: 99%

Iron and manganese removal and membrane fouling during UF in conjunction with prechlorination for drinking water treatment

Choo

Lee

Choi

2005

Journal of Membrane Science

170

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Section: Introductionmentioning

confidence: 99%

Iron and manganese removal and membrane fouling during UF in conjunction with prechlorination for drinking water treatment

Choo

Lee

Choi

2005

Journal of Membrane Science

170

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“…However, as expected the yields obtained in acidic and neutral ones (pH 3 and 7) were very low [9][10][11]. Therefore, the study was conducted at four different basic pHs in the range of 8 to 11.…”

Section: Discussionmentioning

confidence: 89%

Catalytic air oxidation of manganese in synthetic waters

2005

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An attempt was made to study the oxidation of manganese by air in synthetic waters. A series of batch experiments were performed at different values of concentration, temperature and pH. Unoxidized manganese in the solution was determined by formaldoxime spectrometric method. Results of these studies indicated that the air oxidation of manganese soluble in water can be effectively performed in basic media and that oxidation yield increasedwith an increase in pH and concentration. The yield was very high in the presence of manganese dioxide, sepiolite or clinoptilolite in solution and, the oxidation was almost completed especially at high values of pH and concentration. The reaction was found to be first order with respect to Mn 2+ with a very low activation energy. A yield of 62 % was obtained for the air oxidation of wastewater taken from the treatment plant of Corum Municipality.

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“…It also refers to lakes filling natural bowls located on particular continents of northern temperate climatic zone and also in objects located in northern hemisphere (Inaba et al 1997;Zaw and Chiswell 1999;Couture et al 2010). Slightly higher values, sporadically exceeding 1.0 mg Fe l -1 , were observed in the selected lakes only after torrential rains (Zaw and Chiswell 1999). This phenomenon is most likely connected with the iron compounds supply to the lake in wet form of their deposition from the atmosphere, as well as they can be washed down from the catchment surface (Jaguś and Rzętała 2003).…”

Section: Resultsmentioning

confidence: 99%

Differentiation of concentration level of iron compounds in water reservoirs in subsidence depressions in the Katowice Upland

Machowski¹

2010

Limnological Review

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Abstract:The aim of investigations was to evaluate the influence of varied anthropopression on the concentration of iron compounds in water reservoirs located in subsidence depressions treated as geosystems. Investigations were carried out during period of three hydrological years 2003-2005 within 10 reservoirs located in the Katowice Upland. The presence of iron was systematically measured in water and one time in bottom deposits. Measurements in taken samples were made by means of spectrometer of atomic absorption SOLAAR M6. Results confirmed varied influence of anthropopression on concentration of iron compounds in described reservoirs. It refers to waters and bottom deposits as well. Large differences between reservoirs occurred in a case of iron concentration in bottom deposits. The smallest amounts of it (3.10 g kg ) were typical for one of reservoirs in Sosnowiec, whereas the maximum average iron concentration in amount of 0.4331 mg Fe l -1 referred to one of reservoirs in Zabrze. In the described reservoirs dynamic temporal changes in iron concentration in limnic waters was also stated. In every reservoir periods of complete disappearance of this metal occurred, whereas the maximum amounts of it in particular objects changed from 0.1132 mg Fe l -1 in reservoir in the borderland of Bytom and Chorzów up to 1.3744 mg Fe l -1 in reservoir located in Zabrze. The presence of iron compounds in the described water reservoirs on the one hand is shaped by environmental conditions, but on the other hand varied influence of anthropopression decides significantly of their spatial and temporal cycle in the nature.

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Iron and manganese dynamics in lake water

Cited by 97 publications

References 5 publications

Iron and manganese removal and membrane fouling during UF in conjunction with prechlorination for drinking water treatment

Iron and manganese removal and membrane fouling during UF in conjunction with prechlorination for drinking water treatment

Catalytic air oxidation of manganese in synthetic waters

Differentiation of concentration level of iron compounds in water reservoirs in subsidence depressions in the Katowice Upland

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