Characterization of Clay of the Benin Used in Ruminale Feeding. Complete Determination of the Smectites Contained in These Clays  

作　　者：Etienne Sagbo Marielle Agbahoungbata Wilfried Kangbode Arthur Cakpo Jacques Kinlehoume Jean-Baptise Mensah Yves Noack 

机构地区：[1]Laboratoire de ChimieInorganiqueet de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Universitéd’ Abomey-Calavi, Cotonou, Bénin [2]Laboratoire de Chimie Théoriqueet de Spectroscopie Moléculaire (LACTHESMO), Faculté des Sciences et Techniques (FAST), Universitéd’ Abomey-Calavi, Cotonou, Bénin [3]Centre Européen de Rechercheetd’ Enseignementen Géosciences de L’Environnement (CEREGE), Universitéd’Aix Marseille, AIX en Provence, France

出　　处：《Journal of Environmental Protection》2015年第11期1322-1336,共15页环境保护（英文）

摘　　要：In this work, by the use of several physico-chemical complementary methods for the characterization of soil (diffraction of x-rays, chemical analysis, density, cationic exchange capacity, specific sur faces, m?ssbauer, granulometry, etc.), the smectite of the three clayey localities of Benin (Gbédji-Kotovi, Massi-Sèhouè and Zogbodomey) was notably studied. Thus, these three sites principally contain principally smectite, kaolinite and quartz in variable proportion. This smectite is a beidellite. Its chemical formula is proposed. The specific surfaces and the cationic exchange capacity of the samples are determined. For these samples, the fraction lower than 2 μm is practically beidellitic for Gbédji-Kotovi and Massi-Sèhouè (more than 82% of beidellite) and practically kaolinitic (70% of kaolinite) for Zogbodomey. So, used as additive food to ruminant, the clay of Gbédji-Kotovi and Massi-Sèhouè will induce an enteric reduction of methane more than clay of Zogbodomey.In this work, by the use of several physico-chemical complementary methods for the characterization of soil (diffraction of x-rays, chemical analysis, density, cationic exchange capacity, specific sur faces, m?ssbauer, granulometry, etc.), the smectite of the three clayey localities of Benin (Gbédji-Kotovi, Massi-Sèhouè and Zogbodomey) was notably studied. Thus, these three sites principally contain principally smectite, kaolinite and quartz in variable proportion. This smectite is a beidellite. Its chemical formula is proposed. The specific surfaces and the cationic exchange capacity of the samples are determined. For these samples, the fraction lower than 2 μm is practically beidellitic for Gbédji-Kotovi and Massi-Sèhouè (more than 82% of beidellite) and practically kaolinitic (70% of kaolinite) for Zogbodomey. So, used as additive food to ruminant, the clay of Gbédji-Kotovi and Massi-Sèhouè will induce an enteric reduction of methane more than clay of Zogbodomey.

关 键 词：CLAY CHARACTERIZATION BEIDELLITE Formula Bénin 

分 类 号：R73[医药卫生—肿瘤]