Application of Carbon Nanotubes for the Efficient Removal of Heavy Metals from water: A sustainable approach

Heavy metals are toxic , non- biodegradable environmental pollutants that pose significant risks to human health. The remediation of heavy metal contaminated water and soil is an urgent concern from both environmental and public health perspectives. In recent years , nano materials have garnered considerable attention as promising adsorbents for heavy metal removal,owing to their high adsorption capacities, chemical reactivity, active surface sites, and eco-friendly characteristics. In this study ,carbon nanotubes (CNTs) were employed for the removal of lead and chromium from aqueous solutions through batch adsorption experiments. The influence of various operational parameters -including contact time, pH,temperature, initial metal concentration and adsorption was 6, and the adsorption capacity increased with rising temperature, suggesting an endothermic process. Additionally the morphological characteristics of the CNTs were analysed using ScanningElectron Microscopy (SEM). Adsorption behaviour was further evaluated using both Langmuir and Freundlich isotherm models. The findings confirm that well- dispersed carbon nanotubes offer an effective and efficient for the removal of hihly toxic heavy metals, even at low CNT concentration.
Keywords: Carbon nanotubes, Aqueous solution, Lead, Chromium,Heavy metal, Environmental remediation.