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This research studied decontamination of laboratory wastewater with an activated carbon derived from maize cob, an agricultural waste to ascertaining its adsorption effectiveness for water treatment. The preparation conditions such as the concentration of the activating agent, impregnation ratio, impregnation temperature, impregnation time, activation temperature and activation time were optimized. The adsorbent’s porous properties revealed its adsorption potency was correlated with the iodine value. The test adsorbent showed significant contaminants adsorption in the laboratory wastewater; the results obtained were within the standards for drinking water set by the regulatory agencies. This agricultural waste could be considered for the preparation of activated carbon which would ultimately serve as an alternative method of decontaminating laboratory wastewater.

Design of locally sourced activated charcoal filter from maize cob for wastewater decontamination: an approach to fight waste with waste