Differences in Heavy Metals Adsorption on Natural, Modified, and Synthetic Zeolites-A Review

This paper presents a comprehensive study of the differences in heavy metal adsorption on natural, modified, and synthetic zeolites. Heavy metal treatment and adsorption are critical issues in today's modern world, and despite advancements in technology, they remain a global challenge. Industrial effluents are a major source of heavy metal pollutants, which have a severe impact on human health and the environment. Therefore, removing heavy metals from contaminated water and wastewater is a necessity. Adsorption is the most commonly used method for removing heavy metals from the environment due to its cost-effectiveness, design, and performance. Among various adsorbents, zeolites are currently considered a suitable method due to their cost-effectiveness, simplicity, and the varying ion-exchange capacity of natural zeolites worldwide for cations such as ammonium and heavy metal ions. The findings of this research could provide useful information for developing efficient and cost-effective methods for the removal of heavy metals from water and wastewater, thus addressing a critical global issue. The outcomes of this research contribute to promoting a green and healthy environment.