Adsorption processes for the removal of contaminants from wastewater

By T. Sahoo, B. Prélot. 2020

310 citations recorded by the source corpus.

Abstract Nanomaterials are of much interest and are considered as efficient adsorbents for wastewater treatment because of their small particle sizes, large specific surface areas, abundant reactive sites, and nanostructures. In this chapter, the adsorption phenomena at the solid/liquid interface are outlined, together with the most commonly used theoretical adsorption models, their limitations, and some kinetics models. A wide range of organic and inorganic pollutants, with dyes, pesticides and herbicides, heavy metals, radio nuclides, drugs, and other emerging contaminants, lead to a serious concern about human health and aquatic ecosystem and can be treated using adsorption processes. Depending on the targeted contaminants, adsorption techniques take advantages of various types of metal oxides, metal nanoparticles, and carbon-based materials. Finally, some perspectives of the use of nanoadsorbents are pointed out, with the key points related to the cost of the development of such technologies, their practical applications, and the shortcomings of the nanoeffect, such as their transport in aqueous media and the toxicology.

Subfields: Biomedical Engineering, Organic Chemistry, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/b1719accec7f8446d24085dc3ceb939d91488676