Abstract
Pollution from industrial effluents is a major concern because of their toxicity and threat to human life and the environment. The discharge of industrial effluents into water bodies has sparked widespread concern due to the potential health risks associated with toxic components entering the human and animal food chains. This study aims at the removal of selected heavy metal ions from industrial wastewater using Ulva lactuca (seaweed) biomass. A batch reactor study was carried out to remove selected heavy metal ions from industrial wastewater. Atomic absorption spectroscopy and Fourier Transform Infrared Spectroscopy (FTIR) were used to quantify heavy metal ions and adsorbent characterization. The maximum removal efficiency was 55.00% and 81.71%, respectively, for chromium and lead at pH 4, 60 mins contact time, temperature of 40 oC, 1 mg absorbent dosage, and agitating speed of 200 rpm. Absorption behaviour was described using the Langmuir and Freundlich isotherm models. Freundlich isotherm model (R2˜1) was in good agreement with the experimental data and best described the studies based on data fitness. Kinetics data were best modeled by a Pseudo second-order equation. The study demonstrated that the Ulva lactuca (seaweed) biomass is a promising, biodegradable, eco-friendly adsorbent. The data obtained from the study would be useful to industry stakeholders for proper waste management plans.
