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Chicgoua Noubactep   Dr.  Senior Scientist or Principal Investigator 
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Chicgoua Noubactep published an article in November 2018.
Top co-authors
Rui Hu

5 shared publications

School of Earth Science and Engineering, Hohai University, Fo Cheng Xi Road 8, Nanjing 211100, China

Mesia Lufingo

2 shared publications

Department of Water and Environmental Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha P.O. Box 447, Tanzania

Revocatus Machunda

2 shared publications

Department of Water and Environmental Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha P.O. Box 447, Tanzania

Janeth Marwa

1 shared publications

Department of Humanities, Governance and Leadership, Nelson Mandela African Institution of Science and Technology, Arusha P.O. Box 447, Tanzania

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Distribution of Articles published per year 
(2018)
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2
 
Publications
Article 0 Reads 0 Citations Fe0/H2O Systems for Environmental Remediation: The Scientific History and Future Research Directions Rui Hu, Xuesong Cui, Willis Gwenzi, Shuanghong Wu, Chicgoua ... Published: 27 November 2018
Water, doi: 10.3390/w10121739
DOI See at publisher website ABS Show/hide abstract
Elemental iron (Fe0) has been widely used in groundwater/soil remediation, safe drinking water provision, and wastewater treatment. It is still mostly reported that a surface-mediated reductive transformation (direct reduction) is a dominant decontamination mechanism. Thus, the expressions “contaminant removal” and “contaminant reduction” are interchangeably used in the literature for reducible species (contaminants). This contribution reviews the scientific literature leading to the advent of the Fe0 technology and shows clearly that reductive transformations in Fe0/H2O systems are mostly driven by secondary (FeII, H/H2) and tertiary/quaternary (e.g., Fe3O4, green rust) reducing agents. The incidence of this original mistake on the Fe0 technology and some consequences for its further development are discussed. It is shown, in particular, that characterizing the intrinsic reactivity of Fe0 materials should be the main focus of future research.
OTHER 0 Reads 1 Citation Defeating Fluorosis in the East African Rift Valley: Transforming the Kilimanjaro into a Rainwater Harvesting Park Janeth Marwa, Mesia Lufingo, Chicgoua Noubactep, Revocatus M... Published: 14 November 2018
Sustainability, doi: 10.3390/su10114194
DOI See at publisher website ABS Show/hide abstract
The high availability of fluoride in surface and groundwater in the East African Rift Valley was documented during the colonial period. Since the early 1960s, many studies have been conducted to solve the fluorosis crisis in this region. At present, no cost-effective solution to mitigate fluoride contamination is available for the large majority of the population. This situation prompted a process analysis of commonly used technologies. Results revealed that the geochemistry of fluoride is the main problem. Fluoride is very difficult to remove from the aqueous phase. Thus, eliminating the need for technical water defluoridation is an excellent way out of the fluorosis crisis. This goal can be achieved by harvesting fluoride-free rainwater. Harvested rainwater can be mixed with naturally polluted waters in calculated proportions to obtain safe drinking water (blending). This paper presents a concept to transform the Kilimanjaro Mountains into a huge rainwater harvesting park for drinking water supply for the whole East African Rift Valley. However, blended water may contain other pollutants including pathogens that are easy to treat using low-cost methods such as metallic iron based-filters (Fe0 filters). The proposed concept is transferable to other parts of the world still enduring fluoride pollution.
Article 0 Reads 1 Citation Iron Corrosion: Scientific Heritage in Jeopardy Rui Hu, Chicgoua Noubactep Published: 10 November 2018
Sustainability, doi: 10.3390/su10114138
DOI See at publisher website ABS Show/hide abstract
Research on the use of metallic iron (Fe0) for environmental remediation and water treatment has taken off during the past three decades. The results achieved have established filtration on Fe0 packed beds as an efficient technology for water remediation at several scales. However, the further development of Fe0-based filtration systems is impaired by the non-professional behavior of scientists who ignore available advances in knowledge. The confusion is overcome when due consideration is given to the fact that revealing state-of-the-art knowledge is a prerequisite to presenting individual achievements.
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