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ABSTRACT
This study presents a comparative analysis of the performance of filter media composed of biochar and activated carbon in the remediation of grey water. Grey water, containing various organic and inorganic contaminants, poses a significant challenge for effective treatment before discharge. Biochar and activated carbon are both recognized for their adsorption capabilities and potential in water treatment applications. However, their comparative effectiveness in grey water remediation remains underexplored. The experimental setup involved the fabrication of filter media using biochar and activated carbon sourced from the market. Greywater samples from Hall 2 Dormitory of University of Benin were passed through these filters and the efficiency of contaminant removal was evaluated. Parameters such as temperature, total dissolved solid (TDS), electrical conductivity, turbidity, pH, biological oxygen demand etc before and after filtration. Results indicate that both biochar and activated carbon exhibit promising performance in removing a range of contaminants from grey water. However, subtle differences were observed in their adsorption capacities for specific contaminants. Biochar demonstrated higher affinity towards certain organic pollutants. It can be concluded that biochar performs better compared to activated carbon in greywater treatment because it yields a clearer result. In addition, due to its ease of the availability of materials to the locals, it can be used to treat greywater and serve as a replacement for activated carbon in some water treatment systems.
