Auflistung nach Mitwirkenden "Noubactep, Chicgoua"
Anzeige der Dokumente 21-40 von 66
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Elemental iron (Fe0) for better drinking water in rural areas of developing countries
Many of the reasons behind the anthropogenic contamination problems in rural environments of developing countries lie in changes in the traditional way of life and the ignorance on the toxic potential of introduced ... -
Enhancing the Sustainability of Household Fe0/Sand Filters by Using Bimetallics and MnO2
Noubactep, Chicgoua; Caré, Sabine; Btatkeu K., Brice Donald; Nanseu-Njiki, Charles Péguy (CLEAN - Soil, Air, Water, 2011)
Filtration systems containing metallic iron as reactive medium (Fe0 beds) have been intensively used for water treatment during the last two decades. The sustainability of Fe0 beds is severely confined by two major factors: ... -
Geochemistry of natural wetlands in former uranium milling sites (eastern Germany) and implications for uranium retention
Schöner, Angelika; Noubactep, Chicgoua; Büchel, Georg; Sauter, Martin (Chemie der Erde - Geochemistry, 2008)
Discharge from former uranium mining and milling areas is world wide a source of elevated uranium contents in wetlands. The efficiency of organic rich wetland environments for entrapment and accumulation of uranium was ... -
Improving the sustainability of granular iron/pumice systems for water treatment.
Bilardi, Stefania; Calabrò, Paolo S.; Caré, Sabine; Moraci, Nicola; Noubactep, Chicgoua(Journal of environmental management, 2013-05-30)
Metallic iron (Fe(0)) is currently used in subsurface and above-ground water filtration systems on a pragmatic basis. Recent theoretical studies have indicated that, to be sustainable, such systems should not contain more ... -
Investigating the mechanism of Uranium removal by zerovalent iron
Zerovalent iron (ZVI) has been proposed as a reactive material in permeable in situ walls for groundwater contaminated by metal pollutants. For such pollutants that interact with corrosion products, the determination of ... -
Investigating the Mechanism of Uranium Removal by Zerovalent Iron
Zerovalent iron (ZVI) has been proposed as a reactive material in permeable in-situ walls for groundwater contaminated by metal pollutants. For such pollutants which interact with corrosion products, the determination ... -
Investigating the release of coprecipitated uranium from iron oxides
Noubactep, Chicgoua; Schöner, A.; Dienemann, H. (Journal of radioanalytical and nuclear chemistry, 2006)
The removal of uranium (VI) from zerovalent iron permeable reactive barriers and wetlands can be explained by its association with iron oxides. The long term stability of immobilized U is yet to be addressed. The present ... -
Laboruntersuchungen zur Freisetzung von Unat aus einem Gestein unter oxischen naturnahen Bedingungen
The effects of carbonate concentration and the presence of iron hydroxide phases on uranium release into the environment were investigated under oxic conditions and in the pH range from 6 to 9. For this purpose not-shaken ... -
Laboruntersuchungen zur Freisetzung von Unat aus einem Gestein unter oxischen naturnahen Bedingungen
Im Labor wurden verschiedene Größen (pH-Wert, HCO3 --Gehalt, Präsenz von Fe(OH)3) untersucht, von denen angenommen werden konnte, dass sie die umweltrelevante Freisetzung von Uran aus Gesteinen (z.B. Haufwerken, Halden, ... -
Making Fe0-Based Filters a Universal Solution for Safe Drinking Water Provision
Naseri, Elham; Ndé-Tchoupé, Arnaud; Mwakabona, Hezron; Nanseu-Njiki, Charles; Noubactep, Chicgoua; Njau, Karoli; Wydra, Kerstin (Sustainability, 2017)
Metallic iron (Fe0)-based filtration systems have the potential to significantly contribute to the achievement of the United Nations (UN) Sustainable Development Goals (SDGs) of substantially improving the human condition ... -
Mechanism of uranium fixation by zero valent iron: the importance of co-precipitation
Noubactep, Chicgoua; Meinrath, G.; Volke, P.; Peter, H.-J.; Dietrich, P.; Merkel, B. (Uranium in the aquatic environment, 2002)
The coprecipitation of U (VI) with iron corrosion products from aqueous solutions by zero valent iron was investigated. The evidence of coprecipitation was demonstrated by conducting experiments with well characterized ... -
Mechanism of uranium removal from the aqueous solution by elemental iron
The effectiveness of elemental iron (Fe0) to remove uranium (U) from the aqueous phase has been demonstrated. While the mitigation effect is sure, discrepancies in the removal mechanism have been reported. The objective ... -
Metallic iron for environmental remediation: the long walk to evidence
The science of metallic iron for environmental remediation is yet to be established. The prevailing theory of the Fe 0 /H 2 O system is characterized by its inability to fully rationalize the concept that holds up the ... -
Metallic iron for water treatment and environmental remediation: A handout to young researchers
Nkundimana, Emmanuel; Noubactep, Chicgoua; Uwamariya, Valentine (Fresenius Environmental Bulletin, 2015)
The premise of this research note is that current research on metallic iron (Fe0) for environmental remediation and water treatment has started on a biased basis. Before expecting experienced researchers to correct flawed ... -
Metallic Iron for Water Treatment: A Critical Review
Water treatment with metallic iron (Fe0) is still based on the premise that Fe0 is a reducing agent. An alternative concept stipulates that contaminants are removed by adsorption, co-precipitation and size-exclusion in a ...