Adsorption of Heavy Metals Contaminants in Used Lubricating Oil Using Palm Kernel and Coconut Shells Activated Carbons Author/Editor(s): Boadu, Kwasi Opoku Joel, Ogbonna Friday Essumang, David KofiEvbuomwan, Benson OsaDate of publication: 2020Other Papers, Posters and Presentations Read more about Adsorption of Heavy Metals Contaminants in Used Lubricating Oil Using Palm Kernel and Coconut Shells Activated Carbons