Auflistung Geologie nach Mitwirkenden "Noubactep, Chicgoua"
Anzeige der Dokumente 21-40 von 47
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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 ... -
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 ... -
Metallic iron for water treatment: A knowledge system challenges mainstream science
A knowledge system (KS) is a knowledge that is unique to a given group of persons. This form of knowledge may have a local or natural origin and is linked to the community that has produced it. On the contrary, the core ... -
Metallic iron for water treatment: Healing a research community
Despite two decades of intensive research on using metallic iron (Fe0) for environmental remediation and water treatment, basic concerns about their efficiency still prevail. This communication presents the basic idea of ... -
MODELING AND SIMULATION OF IRON/SAND FILTERS
This article develops a mathematical model of Iron (Fe0) /sand filter taking into account the loss of porosity during the filtration process. The mass transport advection-dispersion equation is derived to predict, through ... -
On the mechanism of microbe inactivation by metallic iron
This letter challenges the concept that the metallic iron (Fe0) surface contributes directly to the process of micro-organism inactivation in aqueous solutions. It is shown that any antimicrobial properties of Fe0 is related ... -
On the operating mode of bimetallic systems for environmental remediation
This letter challenges the concept that Fe0/Me0 bimetallic systems enhance contaminant reduction on Me0 surfaces. It is shown on a pure thermodynamic perspective that any enhancement of contaminant reduction by Fe0 in the ... -
On the suitability of admixing sand to metallic iron for water treatment
This communication clarifies the relationships between sand addition and the sustainability of iron/water systems for environmental remediation. It is shown that any enhanced contaminant removal in an iron/sand/water ... -
Optimising the Design of Fe0-Based Filtration Systems for Water Treatment: The Suitability of Porous Iron Composites
Rahman, Mohammad Azizur; Karmakar, Shyamal; Salama, Heba; Gactha-Bandjun, Nadège; Btatkeu, Brice Donald; Noubactep, Chicgoua (Journal of Applied Solution Chemistry and Modeling, 2013-08-31)This study assessed the functionality of metallic iron (Fe0) filtration systems using porous iron composite (PIC) as an alternative to granular Fe0/aggregate mixtures. The usage of PIC for water treatment has many challenges ... -
Predicting the Hydraulic Conductivity of Metallic Iron Filters: Modeling Gone Astray
Since its introduction about 25 years ago, metallic iron (Fe0) has shown its potential as the key component of reactive filtration systems for contaminant removal in polluted waters. Technical applications of such systems ... -
Processes of Contaminant Removal in Fe0-H2O Systems Revisited: The Importance of Co-Precipitation
The mechanism of aqueous contaminant removal by elemental iron (Fe0) materials (e.g., in Fe0-H2O systems) has been largely discussed in the iron technology literature. Two major removal mechanisms are usually discussed: ...