Review of Recent Progress in Wastewater Treatment Using Carbon Nanotubes

Abstract

<jats:sec> <jats:title>Background:</jats:title> <jats:p>Clean and clear water is an essential element in our life. Finding new and innovative approaches to purify water is a critical topic in the research and development. Carbon nanotubes are promising adsorbent for many stable organic compounds. The ability of wastewater treatment using carbon nanotubes was studied in this review article.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods:</jats:title> <jats:p> Adsorption mechanism was discussed based on several research studies. Kinetics and thermodynamics of sorption was reviewed using carbon nanotubes. This review has discussed the approach of removing dyes and heavy metal ions from wastewater using nanomaterials as adsorbent. Furthermore, the paper provides several essential parameters involved in the adsorption mechanism of carbon nanotubes for wastewater applications.</jats:p> </jats:sec> <jats:sec> <jats:title>Results:</jats:title> <jats:p> The results of this review show that carbon nanotubes are an advantageous source of the adsorbent for the wastewater applications. High thermal and chemical stability create carbon nanotube more attractive for the wastewater treatment application. It is observed that both kinetics and equilibrium studies are essential to understand the adsorption phenomena. The adsorption rate constant is considered an important factor to study the adsorption.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion:</jats:title> <jats:p>Nanomaterials in the adsorption process make the process more effortless compared to other types of adsorbents. Carbon nanotubes have several properties that help in surface modification, which make them an effective and environmentally friendly material for wastewater treatment.</jats:p> </jats:sec>

Clay-Supported Metal Oxide Nanoparticles in Catalytic Advanced Oxidation Processes: A Review

“…Some conventional methods, such as chemical precipitation, coagulation, flocculation, adsorption, and membrane filtration, are well-known technologies which have applied for many years; however, the effectiveness is still low in terms of perspectives and challenges for sustainable technology and future perspectives [ 5 , 6 ]. As an illustration, coagulation and flocculation require high volumes of consumable chemicals as coagulants and flocculants which are not reusable.…”