Amadou Hama Maiga

• Dr
• Managing Director at Institut International d'ingénierie de l'eau et de l'environnement

We report through this observation the diagnosis of a case of achalasia of the cardia in a 14-year-old adolescent at the Sominé Dolo hospital in Mopti. This was the first case of Achalasia of the cardia out of the 2650 gastroscopies carried out in Mopti from 2018 to 2022. The patient had no particular personal or family medical/surgical history. Ac...

The esophagus is the most common site of impaction of an ingested foreign body. The main initial symptom is acute dysphagia; Patients with complete esophageal obstruction produce excessive amounts of saliva and are unable to swallow oral secretions. Complete obstruction can cause pressure necrosis and increases the risk of perforation if present fo...

Blunt abdominal trauma being one of the most common abdominal emergencies; they explain the patient's indication of armed expectation in the absence of any notion of hemodynamic instability. The objectives were to determine the hospital frequency, to identify the etiologies and to analyze the therapeutic modalities. The study was retrospective and...

Goiter is the most common endocrine pathology in the world [2]. Its medical treatment is based on hormone therapy, iodotherapy and its surgical treatment is based on thyroidectomy. Familial goiter appeared to be more common in the gotrigenic regions of Europe, rarer in North America. In Africa, particularly in Mali, there have been few studies on f...

The aim of the work was to describe the epidemiological, clinical and therapeutic aspects of peritonitis by gastroduodenal perforation. Patients and methods: the study was retrospective, and descriptive from January 2010 to December 2013.It was carried out in the general surgery department of the hospital of Sikasso (Mali). Patients operated for ga...

The objective of this study was to determine the epidemiological profile of preterm infants followed at the Kangaroo Unit. Patients and Methods: This was a descriptive cross-sectional study carried out in the Pediatrics Department of Sikasso hospital (Mali), a second-reference hospital from 1 January 2019 to 31 December 2019 on a comprehensive samp...

Clitoral cyst remains a common pathology in our regions given the persistence of traditional female genital mutilation practices. Cyst forms in the bed of clitoris carried entirely by excision. In our case the consultation was motivated by the size of the cyst, psychological trauma, discomfort and gravity caused by the tumor. Our gesture consisted...

Appendicular mucocele is a rare appendicular tumor characterized by dilation of the appendicular lumen with linear changes in the mucosa and hypersecretion of mucus. We report a case of appendicular mucocele in a 73-year-old patient. Clinically, there was pain in the right iliac fossa, nausea, sometimes vomiting, and a poorly defined mass palpated...

Introduction : La COVID-19 est une pandémie ayant occasionné une morbi-mortalité importante. L'hôpital Sominé DOLO (HSD) a été le principal site de prise en charge des cas dans la région de Mopti. Objectif : décrire les caractéristiques épidémiologique, clinique, thérapeutique et évolutive de l'infection par le SRAS-Cov-2. Méthodes : Il s'agit d'un...

Crimean Congo haemorrhagic fever (CCHF) is a zoonosis characterized by fever, coagu- lopathy and hepatitis. It is avoided in more than 30 countries in Africa, Asia, the Mid. It is one of twelve haemorrhagic fevers caused by viruses. Crimean-Congo hemorrhagic fever is transmitted by Hyalomma spp ticks or by contact with the blood or fluids of infect...

This case study presents partial results of a research project in agro-sanitation. The study took place in rural area of Burkina Faso, a typical Sahelian country in West Africa. The objectives were (1) to design and implement an agro-sanitation system and (2) assess the willingness of users to reuse the sanitation by-products in small-scale subsist...

This chapter proposes concept of the sanitation business model, based on the discussions; what is necessary to solve current world’s sanitation issue and what is the limitation of current sanitation concept. Proposed policy was on the basis of the Postmodern Sanitation concept; (1) discuss a sanitation value chain which create and add a value to hu...

The main goal of this study was to analyze hepatic amoebiasis abscess at the service of gastroenterology of CHU Gabriel Touré, Bamako- Mali. Material and method: It was longitudinal and prospective study from January 2013 to February 2014 and concerned patients having hepatic abscess diagnosed by echography and amoebic serology or chocolate pus f...

The main objective of this longitudinal and prospecting study from February 2013 to January 2014 was to analyze uper digestive tractus caustic injuries in adult patients at the service of gastroenterology of CHU Gabriel Touré Bamako-Mali. Patients and méthod: We include patients (age more than 16 years) hospitalized for digestive caustic injuries...

Due to the lack of rain, dry spell and agricultural insufficient inputs, agricultural yields are very low and do not allow achieving food self-sufficiency in countries such as Burkina Faso. To fight against this situation in the context of climate change, several researches have emerged such as agronomic research with the promotion of crop varietie...

Access to sanitation technologies remains one of the biggest challenges in sub-Saharan Africa. To overcome this gap, a sanitation project called "Ameli-EAUR" translated from French as improvement of water and sanitation in urban and rural areas, was implemented in Burkina Faso for 5 years (2010-2016). The technologies from the project were designed...

Contexte - Le traitement reste le maillon faible de la gestion des boues de vidange (BV) en Afrique de l'Ouest.-Les lits de séchage plantés et non plantés (LSP et LSNP) font partie de traitement des boues les mieux adaptés aux PED.-Cependant, le dimensionnement de ces procédés encore empirique.-Dysfonctionnements souvent constatés lors du transfert...

Access to sanitation technologies remains one of the biggest challenges in sub-Saharan Africa. To overcome this gap, a sanitation project called " Ameli-EAUR " translated from French as improvement of water and sanitation en urban and rural areas, was implemented in Burkina Faso for 5 years (2010-2016). The technologies from the project were design...

At the beginning of the drought in the Sahel in the 1970s and 1980s, rainfall decreased markedly, but runoff coefficients and in some cases absolute runoff increased. This situation was due to the conversion of the land cover from natural vegetation with a low annual runoff coefficient, to cropland and bare soils, whose runoff coefficients are high...

In Ouagadougou, Burkina Faso, the scarcity of freshwater resources is a critical problem and the reuse of low quality water in urban agriculture is increasing. This study compares the parasitological characteristics of wastewater at the inlet and outlet of a wastewater treatment plant (WWTP) and inside an open channel which conveys the treated wast...

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...

This study aimed to estimate the sanitization effectiveness of compost by solar heating. Compost produced from composting toilet was inoculated with Escherichia coli, Enterococcus faecalis and Ascaris eggs and subjected to solar heating. The heating was performed by direct exposure of compost to sun and in a solar box. From treated compost, the num...

We study the geography of schistosomiasis across Burkina Faso by means of a spatially explicit model of water-based disease dynamics. The model quantitatively addresses the geographic stratification of disease burden in a novel framework by explicitly accounting for drivers and controls of the disease, including spatial information on the distribut...

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...

The review of studies on arsenic in African waters shows that arsenic can be found in high concentrations in both surface water and groundwater. Arsenic concentrations in African groundwater range between 0.02 and 1760 μg L-1, whilst the level of arsenic in surface water is ranged up to 10,000 μg L-1. This high level of arsenic in surface water is...

Safe and appropriate disposal of human waste is a basic requirement for sanitation and protection of public health. For proper sanitation and nutrient recovery, it is necessary to ensure effective treatment methods to complete pathogen destruction in excreta prior to reuse. Composting toilets convert faeces to a reusable resource such as fertilizer...

In Urban areas of Burkina Faso, there are essentially on-site sanitation systems, constituted of latrines and septic tanks. Faecal sludge produced by these utilities are actually rarely treated and just spilt in the environment. So, there is a need to develop sustainable treatment solutions, to preserve local populations health, water resources and...

High Rate Algal Pond (HRAP) was constructed and operated using a mixer device to investigate its capability in treating greywater for reuse in gardening. Physico-chemical and microbiological parameters were monitored. With a hydraulic retention time of 7.5 days and a solid retention time of 20 days, the average removal efficiencies (ARE) were 69% a...

A urine diverting composting toilet system is modified for rural areas of Burkina Faso from the system that is commercially available in Japan. The rural model does not have a heat source. It still has some pathogens in the compost after three months of operation and hence requires a post-treatment. In this study, the kinetics inactivation of Enter...

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...

This article proposes a Postmodern Sanitation concept, based on discussions such as what is necessary to solve the world's current sanitation issues and what are the limitations of the current sanitation concept. The proposed policies of the Postmodern Sanitation concept are: (1) to discuss a sanitation value chain that creates and adds value to hu...

The compost withdrawn from a composting toilet still contains pathogens and therefore requires a post-treatment unit to treat the compost prior to reuse. A quantitative microbial risk assessment Monte Carlo was conducted to evaluate the risk of infectious diseases and the length of time for the post-treatment. The accidental ingestion of compost (0...

The quality of irrigation water from different sources used by urban vegetable producers, the watered soils and vegetables in Ouagadougou was investigated. From December 2012 to December 2013, samples of water (97), lettuces heads (20), manure (10) and soil (9) were collected and analyzed for their parasitological quality using modified Bailenger m...

The goal of this study was to investigate internal hemorrhoid disease. This cross-sectional study was conducted at the digestive endoscopy center of the Gabriel Toure University Hospital from December 2011 to December 2012. Sixty cases of internal hemorrhoid disease were found - 36 men and 24 women and an average age of 47 ±14.4 years. Clinical sig...

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...

Sanitizing of finished compost from composting toilet by solar heating in a local solar box

Urine diverting composting toilets are becoming increasingly popular and are promoted to sanitize human excreta for recycling them into fertilizer. This study aimed to assess the removal and deactivation of intestinal parasites during the composting process. Batch experiments were conducted by composting human feces in an aerobic composting reactor...

The characteristics of greywater generated in two rural areas (“Barkoundba” and “Kologoudiessé”) located in the Sahelian region in Burkina Faso were assessed through observations in selected concessions, sample collection and laboratory analyses. The study aimed at characterizing the qualitative and quantitative characteristics of greywater in orde...

To solve the unpleasant disposal of greywater in rural area and allow its collection for reuse in gardening, a slanted soil treatment system (SSTS) was designed and installed in two households. Granitic gravel of 1–9mm size was used as the filter medium. The aim of this study was to design a SSTS and assess its suitability as a treatment system all...

This study aimed to compare the inactivation rate and the mechanisms of pathogenic bacteria in three matrixes (sawdust, rice husk and charcoal) during the composting process. The inactivation rate was evaluated with Escherichia coli strain and the damaged parts and/or functions were evaluated with three different media. Normalized inactivation rate...

The application of improperly treated compost is one of the causes of bacterial contamination in the field, crops, food and water. Although there are practical guidelines for treatment of compost published, there could be a misapplication in local situations, such as lack of attention by traditional users, labour ineffectiveness and material unavai...

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...

The assessment of industrial liquid waste of Ouagadougou shows 91262 m 3 yr-1 total quantity of effluent composed mainly of tannery effluent. Treatment experiment by EC of these effluents allowed to eliminate chromium and to lower COD up to 86% abatement. The process designed for the treatment of liquid waste from tannery works at 10.5 m 3 hr-1 for...

COD, turbidity and absorbance evolutions have been analyzed depending on current density, time of water treatment, metal concentration, and charge loaded. It's found that the treatment performance is dependent on these parameters until a maximum after that, no improvement of the treatment appears. Electrocoagulation process allows the treatment of...

L'évolution de la DCO, de la turbidité et de l'absorbance sont analysées en fonction de la densité de courant, de la durée du traitement, de la concentration en métaux dissous et de la charge produite. L'efficacité est proportionnelle à tous ces paramètres jusqu'à un certain niveau, niveau au-delà duquel l'augmentation de la valeur de ces paramètre...

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...

West African hydraulic infrastructure lags far behind the rest of the world. But the demands are important and increasing fast. Farmers want irrigation to deal with climate variability. Consumers want rice, a crop that required irrigation. Rural and urban populations have a poor access to drinking water and sanitation. Energy cost is among the high...

The present paper deals with the treatment of an industrial wastewater containing Cr (VI) by electrocoagulation using Al or Fe electrodes, in a discontinuous system with forced recirculation of the solution. Treatment of the waste impurities is achieved by electrocoagulation whereas Cr (VI) removal requires its reduction to Cr (III) prior to precip...

Electrocoagulation technique has been used for the treatment of two wastewaters issued by textile industry. Treatment was carried out in a discontinuous system provided with aluminium or iron electrodes, and with recirculation of the liquid. The efficiency of the technique was followed depending on the electrode material in terms of water treatment...

The present paper deals with the treatment of an industrial wastewater containing Cr (VI) by electroco-agulation using Al or Fe electrodes, in a discontinuous system with forced recirculation of the solution. Treatment of the waste impurities is achieved by electrocoagulation whereas Cr (VI) removal requires its reduction to Cr (III) prior to preci...

The Fenton and photo-Fenton detoxification of non-biodegradable chemical pollution in water was investigated under simulated UV light in the laboratory and under direct sunlight in Ouagadougou, Burkina Faso. The laboratory experiments enable one to make a systematic diagnosis among three types of wastewaters, identifying a biorecalcitrant wastewate...

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...

Le vieillissement naturel des plans d’eau par eutrophisation qui devrait se dérouler sur quelques centaines voire des milliers d’années a lieu de manière précoce et souvent dramatique dans les petites retenues d’eau en Afrique de l’Ouest. C’est le cas de plusieurs centaines de barrages construits dans cette région durant les décennies 1970 et 1980,...

Les conditions socio-économiques des populations peuvent être perçues au travers d'un certain nombre de facteurs de bien être qui sont entre autres une alimentation suffisante, de l'eau potable, un abri sûr, de bonnes conditions sociales et un milieu environnemental et social apte à maîtriser les maladies infectieuses.Ces facteurs ont été analysés...

The annual hydrological regime of the Nakambe River shows sub­ stantial changes during the period 1955 to 1998 with a shift occurring around 1970. From 1970 to the mid 1990s, despite a reduction in rainfall and an increase in the number of dams, runoff increased, including maximum daily discharges, and a delay of several weeks in the timing of peak...

Thèse no 1489 sc. techn. EPF Lausanne. Bibliogr. Evaluation multicritères des systèmes d'alimentation en eau potable des petits centres urbains africains ; Monographie du système d'alimentation en eau potable de dix petits centres urbains.

The assessment of industrial liquid waste of Ouagadougou shows 91262 m 3 yr -1 total quantity of effluent composed mainly of tannery effluent. Treatment experiment by EC of these effluents allowed to eliminate chromium and to lower COD up to 86% abatement. The process designed for the treatment of liquid waste from tannery works at 10.5 m 3 hr -1 f...

Il est question dans cet article de la réalisation de systèmes d’approvisionnement en eau potable (AEP) de type urbain dans les petits centres urbains (PCU) ou centres secondaires d’Afrique. Il s’agit des réseaux de conduites de distribution avec la possibilité pour les ménages de se connecter par un branchement privé (BP) alors que le plus souvent...

L'aide multicritère à la décision est souvent utilisée dans les processus de décision notamment dans les domaines de l'industrie et de l'environnement. On peut utiliser cette science dans le choix entre plusieurs alternatives d'approvisionnement en eau pour les petits centres urbains en Afrique. Pour illustrer cela, nous avons construit un cas fict...

Les systèmes d’informations géographiques (SIG) jouent un rôle important dans la gestion et le suivi des ressources naturelles. Les concepts et les données manipulées par les SIG sont entachés d’incertitude de divers points de vue : inexactitude des mesures, insuffisance dans la formulation des définitions, compréhension approximative de la part de...