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ABSTRACT
The presence of pesticides in the environment is of great concern due to their persistent nature and chronic adverse effect on human health and the environment. Water bodies are subject to pollution by organochlorine pesticides, especially in developing countries, where water pollution is a key sustainability challenge. Pesticides have been responsible for strong environmental impacts, mainly due to their persistence in the environment. Hence Removal technologies are usually combined, activated carbon is considered a universal adsorbent for the removal of organochlorine pollutants from water. Activated carbon from Acatia etbaica was preparedusing labouratory equipments with low investigating cost. Organochlorines such as heptachlor epoxide, dichlorodiphenyldichloroethylene, endosulfan II, DDT and endosulfan sulfate were selected for adsorption because of their common usage in agricultural and malaria control activities and may occur in high concentrations in surface waters that are used as drinking water sources. The effect of the adsorbent dose and initial concentration were investigated. 0.1M, 0.3M and 0.5M of samples at room temperature obtained a total yield of removal of 91.47%, 98.08% and 94.30% respectively, at 40˚C, 15.50%, 89.93% and 94.31% respectively. Also 2M and 5M of samples at 45˚C obtained a total yield of removal of 76.61% and 92.70% respectively and at 50˚C, 70.12% and 88.62% respectively. The preparation method allows the use of this material by local communities for effective remediation of pollution.
