New method of producing a more efficient coagulant for the treatment of water from seeds of moringa oleifera oleh Parfait Sagnon Hounsinou, Fidèle Mahoudo Assogba, Miriam Hounsinou, Julien Adounkpè, Lyde Sèwèdo Arsène Tomètin, Achille Comlan Dedjiho, Waris Kéwouyèmi Chouti, Daouda Mama, Joachim Djimon Gbénou, Eléonore Yayi Ladekan