Fixed-Bed Studies of Landfill Leachate Treatment Using Chitosan-Coated Carbon Composite

The feasibility of a chitosan-coated coconut-shell (CS) carbon composite for landfill leachate treatment in fixed-bed study was investigated terms COD and NH3-N removal. surface the characterized using SEM, FT-IR, XRD to assess any changes before after column operations. To enhance its cost-effectiveness, saturated regenerated NaOH. results showed that had significantly better removal both NH3-N, as compared CS and/or chitosan (p ≤ 0.05; ANOVA test), respectively. breakthrough curve obtained from studies exhibited an ideal “S” shape. points adsorbents followed order at BV 76 < 200 305. It also found low flow rate deeper bed depth packed adsorbent were necessary achieving optimal achieved 96% regeneration first cycle. However, even with enhanced adsorption target pollutants by through coating, treated effluents still could not meet required effluent limits less than 5 mg/L, respectively, mandated legislation. Nonetheless, findings suggest low-cost composites derived unused resources can be employed effective wastewater treatment.