Auflistung Geologie nach Mitwirkenden "Noubactep, Chicgoua"
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Characterizing uranium solubilization under natural near oxic conditions
Noubactep, Chicgoua; Merten, Dirk; Heinrichs, Till; Sonnefeld, Jürgen; Sauter, Martin (Uranium in the Environment, 2006)A 782 d solubilization study using not shaken batch experiments and involving one uranium-bearing rock and three natural carbonate minerals was conducted to characterize uranium (U) leaching under oxic conditions. Results ... -
Comments on "Decontamination of solutions containing EDTA using metallic iron"
This letter presents an improved discussion of the data provided in a recent article on EDTA removal from aqueous solutions using elemental iron (Fe0) by O. Gyliene and his co-workers. It is shown that the authors have ... -
Comments on: “Decontamination of solutions containing EDTA using metallic iron”
This letter presents an improved discussion of the data provided in a recent article on EDTA removal from aqueous solutions using elemental iron (Fe(0)) by O. Gyliene and his co-workers. It is shown that the authors have ... -
Designing Iron-Amended Biosand Filters for Decentralized Safe Drinking Water Provision
There are ongoing efforts to render conventional biosand filters (BSF) more efficient for safe drinking water provision. One promising option is to amend BSF with a reactive layer containing metallic iron (Fe0). The present ... -
Effect of pumice and sand on the sustainability of granular iron beds for the aqueous removal of CuII, NiII, and ZnII
Bilardi, Stefania; Calabrò, Paolo S.; Caré, Sabine; Moraci, Nicola; Noubactep, Chicgoua (CLEAN - Soil, Air, Water, 2013)Current knowledge of the basic principles underlying the design of Fe0 beds is weak. The volumetric expansive nature of iron corrosion was identified as the major factor determining the sustainability of Fe0 beds. This ... -
Effects of the presence of pyrite and carbonate minerals on the kinetics of the uranium release from a natural rock
Noubactep, Chicgoua; Sonnefeld, J.; Merten, D.; Heinrichs, T. (Journal of radioanalytical and nuclear chemistry, 2006)The influence of calcite, dolomite, pyrite and vaterite on the kinetics of uranium (U) release from a natural rock under relevant i.e. field conditions has been investigated. The time dependence of the U release has been ... -
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 which interact with corrosion products, the determination ... -
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, ...