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Clay–polymer nanocomposites: Progress and challenges for use in sustainable water treatment

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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  • Raj Mukhopadhyay
  • Debarati Bhaduri
  • Binoy Sarkar
  • Ruhaida Rusmin
  • Deyi Hou
  • Rubina Khanam
  • Subhas Sarkar
  • Jayanta Kumar Biswas
  • Meththika Vithanage
  • Amit Bhatnagar
  • Yong Sik Ok
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Article number121125
<mark>Journal publication date</mark>5/02/2020
<mark>Journal</mark>Journal of Hazardous Materials
Volume383
Number of pages17
Publication StatusPublished
Early online date29/08/19
<mark>Original language</mark>English

Abstract

Contaminant removal from water involves various technologies among which adsorption is considered to be simple, effective, economical, and sustainable. In recent years, nanocomposites prepared by combining clay minerals and polymers have emerged as a novel technology for cleaning contaminated water. Here, we provide an overview of various types of clay–polymer nanocomposites focusing on their synthesis processes, characteristics, and possible applications in water treatment. By evaluating various mechanisms and factors involved in the decontamination processes, we demonstrate that the nanocomposites can overcome the limitations of individual polymer and clay components such as poor specificity, pH dependence, particle size sensitivity, and low water wettability. We also discuss different regeneration and wastewater treatment options (e.g., membrane, coagulant, and barrier/columns) using clay–polymer nanocomposites. Finally, we provide an economic analysis of the use of these adsorbents and suggest future research directions.