This paper is related to study the using sea lettuce (Ulva lactuca) as a low-cost adsorbent for removing phenol compound from aqueous solutions by adsorption at different operating conditions in a batch unit. The SEM and FTIR tests were performed to determine the morphological characteristics and...

In this study, aluminium foil waste was used as a raw material to prepare alumina (Al₂O₃) by the precipitation process. Then, the produced alumina was applied in the removal of reactive green-19 dye from the simulated wastewater. The purity of the prepared alumina was investigated by the X-ray florescence test, and it was more than 97%. The X-ray diffraction analysis displayed that the alumina sample calcined at 550°C had γ-Al₂O₃ phase. High-surface area and the pore volume obtained were 246 m²/g and 0.412 cm³/g, respectively. Also, the real and bulk densities were found to be 3 and 1.35 g/cm³, respectively. Batch adsorption experiments were carried out for removing RG dye from simulated wastewater using the prepared alumina. The effects of pH, contact time, agitation speed, alumina dose, and the initial concentration on the adsorption process were studied. The optimum conditions were as follows: pH = 3; contact time = 90 min; agitation speed = 200 rpm; and alumina dose = 0.25 g for initial dye concentration of 100 mg/L to have high removal efficiency (98.65%). Moreover, the results revealed that the experimental data fitted to both Freundlich and Langmuir isotherms. The maximum adsorption capacity was 133.33 mg/g.

Water pollution has increased due to human activities; consequently, it is essential to treat both surface water and ground water so they are suitable to meet the needs of the population. This study will discuss water treatment intended to remove antimony. Antimony (Sb) is classed as a...