Auteur : André Kanjinga Ngoyi

Co-auteur : Athanase Kusonika Ndamba, Hervé Ngangu Buloki, Sharon Tshibola Mpiana, Olivier Muhika Mungwengwa,Thierry Tangou Tabou

Revue : CENTRAL ASIAN JOURNAL OF WATER RESEARCH

Lien : https://water-ca.org/article/a-comparative-study-of-biocoagulant-powers-in-preparing-drinking-water-case-of-moringa-oleifera-and-adansonia-digitata

Résumé : Rivers in the Democratic Republic of Congo are a major source of pollution, with conven-tional methods of producing drinking water employing expensive and unclean chemicals. The addition of aluminum salts for coagulation often leads to high concentrations of dis-solved aluminum, which is suspected to cause Alzheimer's disease. Integrating biological processes for treating drinking water could be a sustainable alternative due to their availa-bility and nontoxicity. This study evaluated the effectiveness of biocoagulants (Moringa oleifera Lam. and Adansonia digitata seeds) in preparing drinking water from surface water. Adansonia digitata seeds were unable to clarify raw river water, whereas Moringa oleifera seeds were. Oil extraction improved biocoagulant power, with hot extracts performing better than cold extracts. The optimal doses for hot extracts were , , , and  mg/l for turbidities of ., , , and  NTU, respectively. Cold extracts were retained in the same raw water samples. Settling times of  to  minutes were found to be sufficient to eliminate most suspended matter and colloids. The chlorine level required for effective dis-infection was  to  mg/l. The extracts significantly increased the level of organic matter (OM) in the treated water. Moringa oleifera exhibited superior biocoagulant, bio-adsorbent, and bio-disinfectant properties over Adansonia digitata. Hot extracts from Moringa oleifera were more effective than cold extracts

Mots-clés : drinking water, biocoagulant, Moringa oleifera Lam., Adansonia digitata