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Review of Research on Li-Ion Batteries Waste Management

Open Journal of Inorganic Chemistry 2022年第2期12卷 19-38页

作者： Rokhaya Sylla Gueye Nango Gaye Mamadou Baldé Adama Diedhiou Ngoné Diouf seck gorgui awa Idrissa Ndoye Yoro Tine Matar seck Djibril Fall Alassane Wele Mahy Diaw Laboratory of Physical Inorganic Organic and Therapeutic Chemistry Faculty of Medicine Pharmacy and Odontology Cheikh Anta Diop Dakar University (UCAD) Dakar Senegal Gaston Berger Saint-Louis University (UGB) Saint-Louis Senegal Alioune Diop Bambey University (UADB) Bambey Senegal

Li-ion batteries (Libs) are a mature technology widely used for energy storage in various electronic devices. Nowadays, this technology has become a leading candidate for the portable electronics market and for electric vehicles due to its good performance. As a result, the demand for Libs containing critical metals, rare earth elements and precious metals is increasing day by day with the accelerated upgrades of consumer electronics, which promotes the supply risk of many mining resources. In addition, the problems associated with the production of end-of-life Lib are increasing on a global scale. Used Libs are e-waste containing significant levels of critical raw materials (such as Co, Li, Mn and Ni) along with harmful substances. Without proper management of Lib waste, these precious metals and toxic substances may end up in nature and cause environmental and public health problems. In order to preserve nature, ensure sustainable resource management and stimulate the circular economy, it has become crucial to properly manage and recycle end-of-life Li-ion batteries. By the way, conventional methods focusing on pyrometallurgical treatments combined with hydrometallurgical treatment are widely studied to recover design metals from Libs waste. It is in this context that we have conducted this bibliographic synthesis, focusing on the efficiency of the solvents employed and their competitiveness for a more environmentally friendly economic management. In this manuscript, recent leaching, solvent extraction, electrodeposition and precipitation strategies to recover precious metals from end-of-life Li-ion battery designs are reviewed and the evolution of these processes is discussed.

关键词： Libs Waste Leaching Extraction Rate Affinity Partition Coefficient

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Review of Research on Li-Ion Batteries Waste Management

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Open Journal of Inorganic Chemistry 2022年第2期

作者： rokhaya sylla gueye nango gaye mamadou baldé adama diedhiou ngoné diouf seck gorgui awa idrissa ndoye yoro tine matar seck djibril fall alassane wele mahy diaw

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Analysis of the Level of Pollutants in the ICS Location Area

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Open Journal of Air Pollution 2023年第3期12卷 92-101页

作者： Sokhna Die Ka Dia Issa Samb Ousmane Niass Thaddée Adiouma seck gorgui Ka Natural Justice Hub de Dakar Senegal Organic and Therapeutic Chemistry Research Team (ECOT) Department of Chemistry University Alioune Diop Bambey Senegal

The present study deals with the analysis of the level of pollution found in the area where the Chemical Industries of Senegal (ICS) is located. The results of various field surveys and physicochemical analyses show a high exposure of sulphur and phosphate. This study aims to define abatement strategies to reduce the effects of pollution in the area where ICS is located and mitigate the harmful impacts to the health of the population by creating a system to inform the population of the level of concentration of pollutants in the environment. This will allow the different targets to understand pollution, its manifestations and its effects on health and the environment, prevention, participation in the limitation of pollutant emissions and the formation of eco-citizens sensitive to the issue of environmental pollution of ICS.

关键词： Environment Pollutants Physicochemical Analysis

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Phenotypic Detection of Enterobacterales Strains Susceptible of Producing OXA-48 Carbapenemase

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Advances in Microbiology 2024年第2期14卷 115-121页

作者： Abdoulaye seck Abdou Diop Babacar Ndiaye Assane Dieng awa Ba Amadou Diop Chantal Mahou Douala-Djemba Thierno Abdoulaye Diallo Cheikh Anta Diop University of Dakar Dakar Senegal Medical Biology Laboratory Pasteur Institute of Dakar Dakar Senegal

Background: Nowadays, emergence of Carbapenemase-Producing Enterobacterales (CPE) throughout the world has become a public health problem, especially in countries with limited resources. In recent years, CPE of type OXA-48 (Ambler class D) have been identified in Dakar. The aim of this study was to evaluate the phenotypic detection of OXA-48 CPE using a temocillin disc (30 μg). Methodology: A retrospective study was carried out at Medical Biology Laboratory of Pasteur Institute in Dakar on Ertapenem-Resistant Enterobacterales (ERE) strains isolated from 2015 to 2017. These strains were then tested with a 30 μg temocillin disc. Any strain resistant to temocillin (inhibition diameter Results: Forty-one ERE isolated during the study period were tested, of which 34 (82.9%) were OXA-48 based on phenotypic detection using temocillin disc and confirmed by PCR (100%). OXA-48 CPE strains detected were composed of Klebsiella pneumoniae (n = 14;41.2%), Enterobacter cloacae (n = 8;23.5%), Escherichia coli (n = 7, 20.5%), Citrobacter freundii (n = 3;8.8%), Cronobacter sakazakii (n = 1;3%) and Morganella morganii (n = 1;3%). Conclusion: Temocillin resistance has a good positive predictive value for detecting OXA-48 CPE by phenotypic method, confirmed by PCR. Temocillin is therefore a good marker for detection of OXA-48 CPE except Hafnia alvei.

关键词： Ertapenem Temocillin Phenotypic Detection Carbapenemase-Producing Enterobacterales OXA-48

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Body Composition in Sickle Cell Disease Patients in the Steady State

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Open Journal of Molecular and Integrative Physiology 2024年第2期14卷 31-38页

作者： Mame Saloum Coly Mouhamadou Mansour Diagne Jean Fidele Nnang Essone Abdou Khadir Sow Salimata Diagne Houndjo Maimouna Toure Aïssatou seck awa Ba Abdoulaye Ba Abdoulaye Samb Moussa seck Saliou Diop Mor Diaw Fatou Bintou Sar Arame Mbengue Laboratory of Physiology and Functional Explorations UFR of Health Sciences Iba Der Thiam University Thies Senegal Laboratory of Physiology and Functional Explorations FMPO Cheikh Anta DIOP University Dakar Senegal Department of Fundamental Sciences FMSS/USS Libreville Gabon Laboratory of Physiology UFR of Health Alioune DIOP University Bambey Senegal National Center of Blood Transfusion Dakar Senegal

Introduction: Previous studies in sickle cell disease (SCD) patients have demonstrated low muscle mass (MM) and high fat mass (FM) percentages compared to individuals with normal hemoglobin. The relationship between the evolutions of body composition (BC) parameters in the active SCD population is not well elucidated. The aim of the present study was to assess the body composition in active adult SCD patients in sub-Saharan Africa during the inter-critical period. Methodology: We conducted a descriptive and analytical cross-sectional study over an 8-month period. Eighteen SCD patients (sex ratio = 1) reported regular physical activity (RPA) corresponding to level 3 (RPA of moderate intensity) of the 4-level Saltin-Grimby physical activity scale were recruited. Anthropometric and BC parameters such as BMI, percentage FM and percentage MM were evaluated using an impedance meter. Results: The study population had a mean age of 26 ± 7 years and a mean BMI of 20.5 ± 1.9 kg/m2. We found a significantly higher percentage of FM in women compared to the men (25.6% ± 10.2% vs 11.1% ± 2.1%;p = 0.001). For the proportion of MM, all the women had a normal percentage. The men mostly had high levels of MM compared with reference norms. Men had significantly greater MM percentages than women (45.4% ± 1.8% vs. 26.5% ± 1.4%;p Conclusion: RPA appears to have positive effects on BC in active population with SCD, and a greater-than-expected effect was observed on MM in male patients. Promoting regular, adapted physical activity would be a promising way of improving BC parameters and quality of life in the SCD population. Further studies with larger cohorts will be needed to better substantiate these results.

关键词： Sickle Cell Disease Body Composition Physical Activity

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A Cross-Sectional Survey on Non-Communicable Diseases and Risk Factors in the Senegalese Army

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Health 2016年第14期8卷 1529-1541页

作者： Abdoul Aziz Ndiaye Alioune Badara Tall Boubacar Gueye Ibrahima Soce Fall Sidy Mouhamed seck Amady Barro Mbodj Ndeye Fatou Ngom-Gueye awa Gaye Anta Tal-Dia Community Health Department University Alioune Diop of Bambey Bambey City Senegal Army Health Service Camp Dial Diop Dakar Senegal WHO Bamako Mali Faculty of Health Sciences Gaston Berger University Saint-Louis Senegal Public Health Department Cheikh Anta Diop University Dakar Senegal

Background: The non-communicable diseases (NCDs) have become a public health priority. The objectives of this study were to measure the prevalence and to assess the risk factors of NCDs among the Senegalese military population to initiate an intervention program. Methods: A cross-sectional survey was conducted in 2014. Two-level stratification was used to sample participants. Data were collected following the protocol recommended by the World Health Organization. Data were managed using Epi-Info 6 software and analyzed using R software. Results: A total of 1224 participants were recruited, of whom 96.9% were men. Their ages ranged from 25 to 60 years with a mean of 39.7 ± 9.2 years. Of participants, 17.2% were active smokers. Average duration of active smoking was 19.9 ± 9 years. The prevalence of current alcohol consumption was 11.5%, with an average of 4 ± 2.7 glasses a day. 97.17% of participants consumed fewer than 5 servings of fruits and vegetables a day. 18.63% had insufficient physical activity. The overall prevalence of high blood pressure was 26.9%. The proportion of those who were overweight was 27.2%;3.3% were obese. 3.0% of participants had diabetes and 44.1% had hypercholesterolemia. After adjusting for waist circumference, the risk of high cholesterol was 2.42 in the 35 - 44 age group and 2.86 in the 45 - 60 age group in comparison with the 25 - 34 age group. 32% were classified as having stage 2 chronic kidney. Conclusions: The findings of this study indicate the importance of risk factors for NCDs in the Senegalese military population. Intervention based on prevention and health promotion is needed.

关键词： Risk Factors NCDs Military

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Study on the Perceptions and Social Representations of Husbands on Family Planning in the Health District of Pout/Senegal

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Advances in Reproductive Sciences 2022年第2期10卷 59-72页

作者： Mamadou Saliou Mbengue Abdoul Aziz Ndiaye Alioune Badara Tall Rakhmatoulaye seck awa Ba Ndeye Fatou Ngom Fatou Ndiaye Omar Sy Aladji Madior Diop Anta Tal Dia Université Alioune Diop Bambey Bambey Senegal Université Cheikh Anta Diop Dakar Dakar Senegal

Contraception is a set of procedures that aim to achieve temporary infertility in a woman without her ability to conceive being engaged in the future. It plays an essential role in the health of women and children, the psychological well-being of husbands and allows, among other things, savings for the family. The objective was to study the perceptions and social representations of husbands on family planning. A mixed method was used with a qualitative dominance, carried out in the health district of Pout. The result showed that the perceptions and representations of husbands influence this practice family planning. Even if they have positive attitudes and a good level of knowledge about contraceptive methods, their involvement in FP practices remains low with gaps to be filled. Direct or intermediate variables such as the social, cultural, economic and religious aspects are pitfalls. Indeed, the commitment of men and the consideration of their social attributes are variables to be integrated into the process of information and awareness on family planning;this is crucial in achieving Sustainable Development Goal (SDG) 3 (Good Health and Well-being), including its target 7 focused on sexual and proactive health: a second best move towards the demographic dividend.

关键词： Family Planning Perceptions Social Representations Demographic Dividend

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Spirometric Abnormalities Met among Senegalese Workers Exposed to Chlorine Gas

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Journal of Pharmacy and Pharmacology 2019年第11期7卷 584-592页

作者： Houndjo Salimata Diagne Ouattara Rokia Mbengue Arame Ouedraogo Valentin seck Aissatou Sow Abdou khadre Diaw Mor Toure Maimouna Coly Mame Saloum Ba awa Sar Fatou Bintou Ba Abdoulaye Samb Abdoulaye Laboratoire de Physiologie et d’Explorations Fonctionnelles Faculté de Médecine de Pharmacie et d’Odontologie-Senegal Universite Cheikh Anta Diop de Dakar Dakar BP 5005 Senegal UMI 3189 “Environnement Sante Societies” CNRS CNRST Universite Bamako-UCAD Dakar BP 5005 Senegal UFR des sciences de la sante Thies BP 221 Senegal UFR des sciences de la sante Bambey BP 21400 Senegal

Introduction: Chlorine as a disinfectant has many side effects on respiratory function. This respiratory toxicity may be related to the exposure time. Materials and Methods: Measure the impact of the duration of chlorine gas exposure on the respiratory function of Senegalese workers who work in the national water production factory: Senegalaise Des Eaux (SDE), aged 35-54 years. Twenty-four (24) male subjects exposed to chlorine gas were divided into two groups, one (35-44) and the other (45-54). Clinical examinations were performed on each employee, followed by chest x-rays and spirometry. We included all subjects whose first or last two spirometry results were normal. Results: In the 35-44 years group, 50% of subjects had disturbed spirometry including 41.6% of obstructive syndrome (OS), at the second spirometry and 8.3% had a restrictive syndrome FVC at -25%, at the 3rd spirometry 4/12 had a normal spirometry. The duration of exposure was 10 years. For subjects in 45-54 years, 8/12 had persistent OS or accentuated, then at the 3rd spirometry we had 10 subjects. The duration of exposure was 17.5 years. Conclusion: Compared with (35-44) group, older (45-54) subjects had significant OS, which may be related to duration of exposure.

关键词： Spirometry exposure SDE

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Community Pharmacists’ Knowledge, Practices and Perceptions on Antibiotic Use and Resistance: A Cross-Sectional, Self-Administered Questionnaire Survey, in Guediawaye and Pikine, Senegal

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Open Journal of Epidemiology 2019年第4期9卷 289-308页

作者： Oumar Bassoum awa Ba-Diallo Ndèye Marème Sougou Mamadou Makhtar Mbacke Lèye Mayassine Diongue Ndèye Fatou Cissé Adama Faye Ibrahima seck Djibril Fall Anta Tal-Dia Department of Public Health and Preventive Medicine Faculty of Medicine Pharmacy and Odontology University Cheikh Anta Diop Dakar Senegal Institute of Health and Development University Cheikh Anta Diop Dakar Senegal Laboratory of Bacteriology and Virology National University Hospital Center Dakar Senegal Laboratory of Therapeutic and Organic Chemistry Faculty of Medicine Pharmacy and Odontology University Cheikh Anta Diop Dakar Senegal

Background: Antibiotic resistance is a threat to global health. Community pharmacists are among the most accessible health professionals. Therefore, their role in improving antibiotic use and subsequently in fighting resistance is crucial. The objective of this study was to evaluate community pharmacists’ knowledge, practices and perceptions on antibiotic use and resistance. Methods: We conducted a cross-sectional study in community pharmacies located in the departments of Guediawaye and Pikine, Senegal. The study took place between November 2017 and February 2018. A total of 121 community pharmacies were located. In each of them, we planned to include one pharmacist. A self-administered questionnaire was used. The data were analyzed using Epi Info 7. The analysis was descriptive. Variables were expressed as number (n) and percentage (%). Results: The response rate was 75.2%. The majority mistakenly thought that antibiotics are always effective against sore throat (64.8%), bronchitis (51.6%), paronychia (72.5%) and dental caries (65.9%). Most respondents knew that self-medication (96.7%), poor treatment compliance (94.5%), inappropriate antibiotic dispensing (79.1%), inappropriate antibiotic prescribing (85.7%) were causes of resistance. Further, causes such as poor hand hygiene and lack of immunization were cited by 9.9% and 6.6% of participants. Moreover, 25.2% knew that third-generation cephalosporins, macrolides and quinolones are critically important antibiotics. In addition, 96.7% and 90.2% said to dispense antibiotics without a prescription and to contact prescribers in case of doubt about the reliability of an antibiotic prescription, respectively. The majority was of the opinion that some antibiotic prescriptions were inadequate (29.7%) and that the consumption of antibiotics was high (92.3%). Conclusion: This study showed a lack of knowledge among community pharmacists practicing in Guediawaye and Pikine towards antibiotic use and resistance. Therefore, it

关键词： Community Pharmacists Knowledge Practices Senegal Antibiotic Resistance

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Neonatal Mortality in Rural Area in Senegal

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Open Journal of Pediatrics 2022年第2期12卷 325-331页

作者： Aliou Mar Coundoul Amadou Sow Modou Gueye Djibril Boiro Fatou Ndiaye Guilaye Diagne Aminata Mbaye awa Kane Mohameth Mbodj Khadim Bop Serigne Tawa Ndiaye Papa Souleye Sow Ndeye Fatou Sow Mame Aita seck Mohamed Fattah Papa Moctar Faye Amadou Lamine Fall Ousmane Ndiaye Albert Royer National Hospital Center Dakar Senegal Abass Ndao Hospital Center Dakar Senegal

Most newborn deaths occur in two regions of the world, South Asia and sub-Saharan Africa. In Senegal, much progress has been made over the past two decades with a reduction in overall infant mortality by 38%. However, the decline in neonatal mortality has been slower during the same period. The objective of this study is to assess neonatal mortality, to determine the different causes and to make recommendations for improving care in rural areas. This is a retrospective study with a descriptive and analytical aim carried out in the pediatrics department of the Diourbel regional hospital, 130 km from Dakar, the Senegalese capital, over a 12-month period from January 1 to January 31, December 2018. All newborns hospitalized in the pediatric ward during the study period were included. Overall mortality was 30.6%, newborns between 0 and 7 days accounted for 90.6% of deaths, INBORNs accounted for 62.3% of deaths. Newborns whose mother’s age was between 20 and 35 years of age accounted for 69.3% of deaths. Newborns of first-time mothers accounted for 40.2% of deaths and those of multiparous mothers 31%. Newborns who did not reach term accounted for 58.9% of deaths. Newborns admitted for respiratory distress represented the majority of deaths 45.5% (n = 93) followed by those with low birth weight 32.5 (n = 65) followed by those with neurological manifestations 30.5 (n = 62). Conclusion: Neonatal mortality is very high in the Diourbel region and the main cause is the lack of human resources and a very insufficient technical platform. The fight against this mortality involves improving the technical platform and recruiting sufficient and well-trained staff.

关键词： Mortality Neonatal Rural Area Senegal

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