Publications (37)
ARTICLE
Development of numerical model to describe water transfer in hygroscopic soil: use of a new method based on off-center upstream principle for convective flux
Samuel Ouoba, Alfa Omar Dissa and François Ouedraogo
This manuscript is focused on the mechanisms of water evaporation and the phenomena affecting its migration toward the groundwater. The objective is to estimate the essential parameters which govern the diffusion transfer. The phenomenological parameters used in the model are obtained experimentally and the mass transfer equations have been so(...)
numerical model, eccentric upstream, hygroscopic soil, convection, profiles
ARTICLE
Numerical Modelling and Simulation of Water Transfer in Soil with Low Water Content
S. Ouoba and J.-C. Bénet
In this paper, we present the results of numerical model and simulation of water transfers in soils with low water content. The main objective is to identify the major phenomena which allow to adequately describe water transfer in soil between the filtration of liquid phase and the capillary rise. We have shown that in the superficial layer of(...)
Hygroscopic · Numerical modeling · Pendular · Soil water content · Water transfer
ARTICLE
Traçage de la courbe granulométrique et la détermination des coefficients de Hazen par la méthode analytique
GOUBA Bernard
Sand and gravel make up the granular skeleton in concrete. They contribute to the resistance of concrete structures. They are able to support higher loads or allow more slender constructions. The aggregates can also present varieties of diameter and making it possible to carry out more resistant works. In the laboratory we carried out the siev(...)
aggregate1; particle size curve 2; Hazen coefficient 3; fineness modulus 4; analytical method; graphic method 5.
ARTICLE
Lithostab as Technique for Improving the Geotechnical Performance of a Lateritic Soil in Road Construction
Donzala D. Some, Ohindemi G. Yameogo, Takenori Hino and Tri Harianto
This article focuses on a technique for shallow mechanical improvement of soil which deals with the utilization of crushed
granite mixed in a certain percentage with lateritic soils during road construction in Burkina Faso. Lithostab is the simplified name
for litho-stabilization, a technique for improving laterite by adding crushed granit(...)
Lithostab, technique for improving, geotechnical performance, laterite, roads.
ARTICLE
Caractérisation du processus de traitement des eaux usées des unités industrielles dans la station de traitement de Kossodo mise en place par l’Office Nationale des Eaux et l’Assainissement (ONEA) au BURKINA FASO
GOUBA Bernard , SAWADOGO Boukari
Les eaux usées des stations de traitement de Kossodo dans la ville de Ouagadougou ont un impact négatif sur l’environnement et sur la population. Pendant plusieurs années la zone de Kossodo est réputée à cause de son odeur nauséabonde due aux eaux usées. Nous avons effectué une étude de terrain afin de mieux caractériser la station d’épuration(...)
Traitement ; Caractérisation ; Eaux usées ; Station d’épuration ; Bassin anaérobie.
ARTICLE
Risk of Waterborne Parasitic Infection among Vegetables Producers in the City of Ouagadougou, Burkina Faso: An Attempt to Quantify Them Using the Quantitative Microbiological
Noellie W Kpoda, Hamidatu S Darimani, Adama Oueda, Idrissa Ouédraogo, Gustave B Kabré
The use of wastewater in urban agriculture has been promoted as an alternative to water scarcity and as a means to increase soil fertilizer. However, the use of wastewater in urban agriculture raises major public health concerns, mainly due to the often high concentration of pathogenic micro-organisms. Waterborne parasites are a major health c(...)
Urban Agriculture, Polluted Water, Parasites, Health Risk, Quantitative Microbiological Risk Assessment
ARTICLE
Caractérisation d’un réseau d’évacuation optimale des eaux usées muni de capteurs électroniques: Cas de la zone industrielle de Kossodo dans la ville de Ouagadougou au Burkina Faso
Bernard Gouba, Madjoyogo Hervé Sirima , Betaboale Naon
Le dysfonctionnement du réseau d’évacuation des eaux usées constitue un facteur de pollution mettant en cause le bien-être de la population dans la ville de Ouagadougou. La stagnation des eaux usées est le lieu de prédilection des insectes pathogènes. Au cours de notre étude nous avons effectué une sortie d’étude dans la ville qui nous a permi(...)
Section ; Conduite d’évacuation ; Eaux usées ; réseau d’évacuation ; déchet solide.
ARTICLE
Role of Temperature and Pressure on The Evaporation Kinetics of trichloroethylene and Heptane in Soil
Samuel Ouoba and Jean-Claude Bénet
This article discusses the influence of temperature and pressure on evaporation of trichloroethylene and heptane. The results show that the liquid content of the compound, the temperature and the ambient pressure influence the evaporation of volatile organic compounds in the soil. It has been shown that as the liquid content of compound
incre(...)
trichloroethylene, heptane, evaporation kinetics, temperature
ARTICLE
Caractérisation physico-chimique et microbiologique des boues de vidange déshydratées et des déchets solides ménagers organiques pour une valorisation en compost agricole
Soré Ouindpouiré Auguste A. and Ouoba Samuel
Dans la ville de Ouagadougou au Burkina Faso, les stations de traitement es boues de vidange souffrent du manque d'une filière de valorisation des boues après séchage. Pour les déchets solides ménagers, les quantités collectées sont majoritairement destinées à l'enfouissement technique. Trouver une solution pour la valorisation des boues de vi(...)
Boues de vidange déshydratées, Déchets solides ménégers organiques, Compostage
ARTICLE
Experimental study of water evaporation rate, at the surface of aqueous solution, under the effect of a discontinuity of chemical potential – Effect of water activity and air pressure
J.-C. Benet, S. Ouoba, F. Ouedraogo, F. Cherblanc
The aim of this communication is to analyse the influence of water activity and total pressure on water evaporation.
The system is composed of liquid and gas phases, separated by a plane surface, contained in a cylinder whose volume is regulated by a piston. Water activity is regulated by saturated salt solutions and pressure by the piston. T(...)
Surface evaporation rate, Chemical potential, Water activity, Gas pressure
ARTICLE
Measuring the Physico-Chemical Impact of Wastewater from the Open Sewer in an Industrial Area: Case of the Kossodo Industrial Area in the City of Ouagadougou in Burkina Faso
Bernard Gouba, Madjoyogo Hervé Sirima, Betaboale Naon
Wastewater from industrial units in the Kossodo district in the city of Ouagadougou has a physicochemical impact
on the environment and the population. For several years the Kossodo area was famous for the effects of
wastewater from industrial units on the environment (a foul odor). We took samples from various points of the
open canals in(...)
measurement, physico-chemical impact, wastewater
COMMUNICATION
LE BÉTON ET LES BÉTONS A HAUTE PERFORMANCE
GOUBA Bernard
Les bétons à hautes performances présentent une durabilité améliorée et une résistance accrue. Ils sont capables de supporter des charges supérieures ou permettre des constructions plus élancées. Les Béton à Haute Performance peuvent également présenter des formes plus complexes et permettent de réaliser des ouvrages de grandes portées. Pendan(...)
Béton – Béton haute performance
ARTICLE
Valorisation par co-compostage des boues de vidange déshydratées et des déchets solides ménagers organiques : suivi et qualité
O.A.A. SORE, S. SOSSOU, Y. KONATE, S. OUOBA
Pour compléter la chaine de valeur dans la filière de gestion des boues de vidange, il est important de trouver une finalité pour les Boues de Vidange Déshydratés (BVD) issues des stations de traitement. Cette étude a pour objectif de valoriser les BVD à travers le co-compostage avec les Déchets Solides Ménagers Organiques (DSMO). Les BVD et(...)
boues de vidange déshydratés, cocompostage, déchets solides ménagers organiques, qualité agronomique
ARTICLE
Highlighting of a local non-equilibrium thermodynamics during the transfer of trichlorethylene (TCE) in the superficial layers of arid soils
Samuel Ouoba, Bruno Cousin, David Y. Toguyeni, Salifou K. Ouiminga, Fabien Cherblanc, Jean Koulidiati and Jean-Claude Bénet
In this paper, we analyse and model the mass transfer of trichloroethylene in the surface layer of soil. Our study essentially focuses on arid soils taking into account the phase change liquid–vapour. We have then examined the validity of the assumption of local equilibrium by comparing the values of instantaneous pressure of the trichloroethy(...)
Transfer, non-equilibrium, trichloroethylene, arid soil
ARTICLE
A New Experimental Method to Determine the Henry’s Law Constant of a Volatile Organic Compound Adsorbed in Soil
S. Ouoba, F. Cherblanc, J. Koulidiati, and J.-C. Bénet
This paper presents a newmechanical method to determineHenry’s lawconstant (HLC) of a volatile organic compound (VOC). This method is an extension of the one proposed byOuoba et al. (2010) to determine the water activity in porous media.Thiswork focuses on TCE and aims at characterizing its liquid-vapor equilibrium in various cases in the form(...)
Transfer, non-equilibrium, trichloroethylene, arid soil