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Desorption of Methylene Blue Adsorbed on Activated Carbon from Cocoa Pod Shell

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Open Journal of Applied Sciences 2023年第5期13卷 605-617页

作者： David Léonce Kouadio Yapo Aristide Hermann Yapi Djedjess Essoh Jules César Meledje Kacou Alain Paterne Dalogo Djamatché paul Valery Akesse Brou Dibi Karim Sory Traore Laboratoire des Sciences et Technologie de l’Environnementale Université Jean Lorougnon Guede C&#244te d’Ivoire Laboratoire des Sciences Physiques Fondamentales et appliquées école Normale Supérieure (Abidjan) Abidjan C&#244te d’Ivoire Laboratoire des Sciences de l’Environnement Université Nangui Abrogoua C&#244te d’Ivoire

Environmental protection has become a concern for the world. For this reason, the objective of this work is to remove methylene blue adsorbed on activated carbon. The coal used comes from cocoa pod shells. Before pyrolysis, the shells were ground, sieved and impregnated with orthophosphoric acid. Before desorption, the activated carbons were initially saturated with MB. These saturated coals were brought into contact with a sodium chloride (NaCl) solution and then stirred. The evolution of the resorbed MB concentration was monitored by spectrophotometry. The desorption tests showed a remarkable elimination from the first 10 minutes. The desorption kinetics comprises two phases: a rapid kinetics between 0 and 30 minutes and a slow kinetics between 30 and 60 minutes. The desorption of the dye reaches a concentration aqual to 0.84 mg/l at pH = 4 at temperature = 80°C. For modeling, the coefficient of the Langmuir II model is greater than or equal to O.9893. The model of Langmuir III is less than or equal to 0.9373. The Freundlich model coefficient is 0.9842 or less. The desorption is thefore carried out on energy-homogeneous adsorption sites and without any interaction between the adsorbed cations of the dye. Experimental parameters such as pH, temperature and concentration of sodium chloride (NaCl) solution influence the desorption of MB. And the model of Langmuir II describes well the process of desorption of the MB.

关键词： Desorption Activated Carbon Methylene Blue Isotherm Sodium Chloride

Morbidity and Mortality of Emergency Hernia Surgery in Children in Bujumbura: Analysis of Favourable Factors

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The Haitian Revolution and jean-Jacques Dessalines:The End of History and the Last Man Standing

Surgical Science（外科学） 2023年第12期

作者： jean Claude Mbonicura Prudence Bukuru paul Banderembako RévérienNdayirorere Guy Darcy Nibogora jean Marie Nizeyimana Stève Nkurunziza

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Journal of Philosophy Study 2023年第5期13卷 204-213页

作者： paul C.Mocombe West Virginia State University West VirginiaUSA

This work,using a structurationist approach,phenomenological structuralism,argues that the Haitian Revolution and jean-Jacques Dessalines represented the first embodiment of Alexandre Kojève’s“End of History”*** the Haitian Revolution,which is a revolt against slavery and mercantilist capitalism,the founder of the country,jean-Jacques Dessalines,attempted to synthesize three forms of system and social integration on the island in order to constitute the nation of Haiti:the mercantilist and liberal capitalism of the Affranchis,petit-bourgeois blacks and mulatto elites,respectively;and the Lakouism,communism,of the African majority on the *** this sense,Dessalines represented the first embodiment of Kojève’s end of history Hegelian *** a structurationist,structural Marxist,understanding of practical consciousness constitution,the work explores the origins and basis for Dessalines’s social,political,and economic policies to that *** death of Dessalines,I conclude,would undermine this revolutionary impetus of the Haitian Revolution,rendering it insignificant,and converted Haiti into the so-called poorest country in the Western Hemisphere under American neoliberal capitalist hegemony.

关键词： ideological domination phenomenological structuralism embourgeoisement black underclass Grandon Mulatto Elites Haitian Revolution Bois Caiman Affranchis

Prognostic Factors and Survival of Laryngeal Cancer in Cameroon

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脑钠素:重症败血症中心肌功能不良和预后的标志

International Journal of Otolaryngology and Head & Neck Surgery（耳鼻喉） 2021年第1期

作者： jean paul Engbang Maurice Mpessa Laurence Essama Samad Abdel Mohamadou Louis Richard Njock

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世界医学杂志 2004年第7期8卷 61-61页

作者： Charpentier,Julien Luyt,Charles-Edouard Fulla,Yvonne Vinsonneau,Christophe Cariou,Alain Grabar,Sophie Dhainaut,jean-Fran?ois Mira,jean-paul Chiche,jean-Daniel 杨宏梅(译)

Morbidity and Mortality of Emergency Hernia Surgery in Adults in Bujumbura:Analysis of Favourable Factors

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Evaluation of Health Risks Related to the Consumption of Fish from the Guéssabo River

Surgical Science（外科学） 2023年第12期

作者： Stève Nkurunziza Prudence Bukuru Stany Harakandi paul Banderembako RévérienNdayirorere Guy Darcy Nibogora jean Marie Nizeyimana jean Claude Mbonicura

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Food and Nutrition Sciences 2022年第1期13卷 55-64页

作者： paul Attien Evelyne Toe Kra Athanase Kouassi Arthur Constant Zébré Mamayé Neolly Gomé Haziz Sina Nanouman Marina Christelle Assohoun-Djeni Arsene Konan Ibourehema Coulibaly Baba-Moussa Lamine Adjehi Dadie Department of Biochemistry and Microbiology Laboratory of Agrovalorisation Jean Lorougnon Guede University Daloa C&#244te d’Ivoire Laboratory of Biology and Molecular Typing in Microbiology Faculty of Science and Technology University of Abomey-Calavi Cotonou Benin Department of Food Science and Technology Laboratory of Food Biotechnology and Microbiology Nangui Abrogoua University Abidjan C&#244te d’Ivoire Training and Research Unit of Biological Sciences Department of Biochemistry-Genetic University of Peleforo Gon Coulibaly Korhogo C&#244te d’Ivoire

Fish is rich in essential nutrients but can remain a potential source of food poisoning. A study was, therefore, carried out with the general objective of highlighting the probable biological and chemical dangers associated with the consumption of fish and freshwater fruits from the Guéssabo river. The present study was conducted on 50 carp fish, 50 mackerel fish, 50 frogs and 50 mollusks caught in the Guéssabo River. Microorganisms were enumerated by conventional tests and heavy metals were investigated by Inductively Coupled Plasma Optical Emission Spectrometry. The enumeration showed high levels of thermotolerant Coliforms (2.5 × 104), Enterobacteriaceae (3.4 × 104), S. aureus (2.3 × 103) and Yeast/Molds (2.1 × 104), in all samples the standards were not in conformity with the required standards. High levels of Al (7230 μg/kg) and Cd (21.57 μg/kg) were observed in carp fish and these values are above the standard. In conclusion, the fish caught in the Guéssabo River could be a health risk factor for the consumer.

关键词： Fish Microorganisms Heavy Metals Sanitary Quality Guéssabo River of Côte D’Ivoire

HPV positivity varies with technique and primer set, in formalin-fixed paraffin-embedded benign and malignant breast tissue from Malta

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Genetic Predisposition for Type 2 Diabetes Mellitus in a Cameroonian Population: Contribution of rs4731702 (C/T) Polymorphism of Krüppel-Like Factor 14 Gene

American Journal of Molecular Biology（美国分子生物学期刊） 2011年第3期

作者： Roderick Mallia jean-paul Mangion Christian Camenzuli Annalisse Cassar paul Cacciottolo John Cauchi Joseph Borg Sarfraz Ali Pierre Schembri-Wismayer Anatomy Department University of Malta Msida Malta Applied Biomedical Sciences Department University of Malta Msida Malta.

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