This study aimed to evaluate the ability of magnesium chloride modified carbonized rice hull (MCRH) material for ammonium removal from synthetic and domestic wastewater. The MCRH material was prepared by using waste rice hull from a household rice-processing factory and magnesium chloride salt via a simple mixing and annealing method. The material was then characterized by scanning electron microscopy and energy-dispersive X-ray spectroscopy. The effects of rice hull modification by magnesium chloride and experimental conditions such as initial ammonium concentration (20 - 100 mg/L), amount of adsorbent ( - g/L), and adsorption time (0 - 32 h) on the ammonium removal efficiency and adsorption capacity were investigated. Adsorption kinetic and isotherms were also studied for MCRH material. Results showed that magnesium was successfully added on carbonized rice hull with Mg/C molar ratio of . Ammonium adsorption isotherm fitted well to Langmuir model with maximum adsorption capacity of mg/g. | Study on the removal of ammonium in wastewater using adsorbent prepared from rice hull and magnesium chloride
