Yacouba Konate

• Institut International d'ingénierie de l'eau et de l'environnement

Wastewater management remains a major challenge in developing countries due to the lack of adequate infrastructure, making the need for economically viable and efficient technologies that can be sustained by emerging economies imperative. The upflow anaerobic sludge blanket (UASB) reactor represents an efficient and low-cost technology that produce...

Poor wastewater management remains a critical health and environmental challenge in most developing countries in Sub-Saharan Africa due to the lack of adequate infrastructure for collection and treatment. This study evaluated the performance and methane production of a full-scale upflow anaerobic sludge blanket (UASB) reactor of capacity 18000 m³/d...

In Burkina Faso, faecal sludge is mostly discharged into the environment untreated, with associated public health risks. Thus, sanitation technology that efficiently treats Blackwater (BW) in-situ is urgently required. This paper reports the design and testing of a proposed worm-based toilet (wormlet). The presence of E.eugeniae (EE) is found to re...

Constructed wetland technology is an innovative engineering technique for faecal sludge management. The presence of emergent macrophytes enhances the important processes of evapotranspiration, sludge mineralisation, and contaminant reduction. Consequently, selecting a species that can withstand the difficult sludge contaminated conditions within a...

The fate of filter materials and microbial communities during the vermifiltration process were studied for 5 months while treating the concentrated greywater. Four filters were filled with 10 cm gravel of which a layer of medium size gravel (5 cm thickness, aggregate size 20-40 mm) at the bottom and a layer of coarse gravel (5 cm thickness, aggrega...

Vermifiltration technology using Eudrilus Eugeniae could be an alternative low-cost option for the treatment of urban grey water, which is highly polluted with high concentrations of surfactants, sodium and cooking oil. In this study, the effects of these pollutants on performance of a vermifiltration system was tested over a period of 6 to 8 weeks...

Breweries release significant amounts of wastewater loaded with various organic and mineral materials. Prior studies of membrane bioreactor (MBR) wastewater treatment have been conducted with very little interest granted to the conditions of biomass acclimation. This study displays biomass behavior during brewery wastewater treatment by an aerobic...

This study proposes a comprehensive approach to investigate water resource contamination by pesticides under the specific climatic and hydrological conditions of the Sudano-Sahelian climate. Samples were collected from traditional wells, boreholes, and a lake in Burkina Faso. A multiresidue analysis was developed for 25 pesticides identified during...

Constructed Wetland technology has positive potentials for the management of faecal sludge in developing countries of Sub-Saharan Africa. However, identification of indigenous plant species that can survive the high levels of faecal sludge toxicity is a major challenge to its application. Preliminary study highlighted a high complexity of potential...

The present work presents the results obtained during the treatment of a synthetic aqueous solution contaminated by zinc or iron at the laboratory scale by electrocoagulation process. Iron and aluminum electrodes are used separately. The influence of the electrocoagulation parameters as well as the pH of the liquid have been studied. In order to un...

The beverage industries release large amounts of wastewater containing organic and mineral pollutants (sodium). The conditions of biomass acclimation as well as the influence of environmental factors pertaining to the Sahelian context are not well documented in previous studies with regards to industrial wastewater treatment by membrane bioreactor...

Vegetables and water samples have been collected around the lake of Loumbila in Burkina Faso. Pesticides residues in food commodities were analyzed using a modified QuEChERS extraction method prior analysis on GC-MS and UPLC-MS/MS of 31 pesticides. Maximum Residue Limits (MRLs) were exceeded in 36% of the samples for seven pesticides: acetamiprid,...

The present work assesses human exposure to pesticides in vegetable-producing areas in Burkina Faso, using hair as an indicator. The study design includes a comparison between operators who are occupationally exposed while working in the fields and a reference population (i.e. not occupationally exposed) to evaluate both occupational and indirect e...

This study aimed at elucidating the inactivation mechanisms of pathogenic bacteria in drinking water during chlorine and solar disinfection using a simple plating method. The well-known bacterial model Escherichia coli was used as pathogenic bacteria for the experiments. The damage mechanisms of E. coli were evaluated by simple plating method on se...

This study aimed at estimating the sanitizing effectiveness of urea treatment by studying the inactivation kinetics of selected indicator microorganisms. Finished composts from a composting toilet were inoculated with indicator microorganisms and subjected to different urea concentrations (0.5–2% w/w) and temperatures (22, 32 and 42°C). The inactiv...

Abstract

Field surveys have underlined the lack of knowledge regarding good agricultural practices and the use of unsuitable and obsolete pesticides in gardening areas. Food constitutes the most common route of exposure of the consumer to pesticides. To prevent health hazard and unnecessary exposure, European countries have implemented Maximum Residue Limit...

Pesticides are widely used in gardening to maintain high yield, prevent diseases and control pests and rodents. Field surveys conducted in Burkina Faso have underlined the lack of knowledge regarding good agricultural practices and the use of unsuitable and obsolete pesticides. Improper packaging and high illiteracy rate in rural areas also hamper...

This study aimed to investigate and understand the zero level detection of Escherichia coli at the outlet of an improved waste stabilization pond. Wastewaters were collected from the International Institute for Water and Environmental Engineering (2iE) campus and were subjected to biological treatment. The system included two-stage Anaerobic Reacto...

A comparative investigation was conducted for 10 months with sand and fine sawdust vermifilters and a control unit to treat concentrated greywater generated from a poor urban household in Ouagadougou, Burkina Faso. Each of the filters was made up of cylindrical DN200-PVC pipes and filled with 10 cm of gravel at the bottom. On top of the gravel laye...

The treatment of greywater collected from an urban slum area of Ouagadougou, Burkina Faso, by vermifiltration (VF) was investigated using locally available sawdust as bedding material and Eudrilus eugeniae earthworm. The filtration system was made up of layers of sand, and fine and coarse gravel from the top to the bottom, which was spread inside a...

The production of biogas and its composition from an anaerobic pond treating domestic wastewater have been studied in the Sudano-Sahelian climate of Burkina Faso. The biogas production was measured from March 2010 to March 2011 using a floating static chamber, and the composition was analysed using a micro-gas chromatograph. The composition of biog...

Sludge accumulation in waste stabilisation ponds based on local conditions is of great interest for successful sludge management, and accurate accumulation data are essential for WSP design based on reasonable data for model development in relation to the effect of climate variability. For this purpose, a series of three ponds treating domestic was...

Parasite removal and low cost systems for wastewater treatment in small settlements and economically disadvantaged areas have become increasingly important requirements in developed and developing countries to safeguard public health from wastewater-associated intestinal diseases. The paper evaluates the occurrence and removal of protozoan cysts an...

The present paper investigates the occurrence, removal, and accumulation of protozoan cysts and helminth eggs in a large anaerobic pond treating municipal wastewater of Ouagadougou (Burkina Faso). With a hydraulic retention time of 6.5 days, the anaerobic pond achieved 100% removal of helminth eggs and protozoan cysts most of the time, except durin...

Accumulation rates and pathogen concentrations in primary stabilization pond sludges in developing countries are important parameters for adequate sludge management and the safeguarding of public health with sludge reuse in agriculture. An anaerobic pond has been investigated for sludge accumulation rates and helminth egg viability after four years...

Résumé Des études portant sur l’épuration des eaux usées domestiques ont été menées sur une filière de trois bassins en série de lagunage à microphytes à la station expérimentale de l’Institut International d’Ingénierie de l’Eau et de l’Environnement (2IE). Cette filière comporte : un bassin anaérobie (BA), un bassin facultatif (BF) et un bassin de...

Waste stabilization ponds (WSP) are considered to be one of the main methods for municipal wastewater because of their advantages over other methods (conventional treatment) relating to treatment effectiveness, system flexibility and simplicity, and cost (ARTHUR, 1983; MARA, 1976; MARA and PEARSON, 1986; SILVA, 1982). Moreover, it has long been acc...