Application of carbon nanotubes for removal of emerging contaminants of concern in engineered water and wastewater treatment systems

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Sudarshan Kurwadkar ◽  
Timothy V. Hoang ◽  
Kailas Malwade ◽  
Sushil R. Kanel ◽  
Willie F. Harper ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Wastewater Treatment ◽  
Emerging Contaminants ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Wastewater Treatment Systems

scholarly journals Functionalized Carbon Nanotubes (CNTs) for Water and Wastewater Treatment: Preparation to Application

2021 ◽  
Vol 13 (10) ◽  
pp. 5717
Author(s):  
Mian Muhammad-Ahson Aslam ◽  
Hsion-Wen Kuo ◽  
Walter Den ◽  
Muhammad Usman ◽  
Muhammad Sultan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Wastewater Treatment ◽  
Water Resources ◽  
Large Scale ◽  
Industrial Applications ◽  
Biological Species ◽  
Special Focus ◽  
Water And Wastewater Treatment ◽  
Adsorption Sites ◽  
Water And Wastewater

As the world human population and industrialization keep growing, the water availability issue has forced scientists, engineers, and legislators of water supply industries to better manage water resources. Pollutant removals from wastewaters are crucial to ensure qualities of available water resources (including natural water bodies or reclaimed waters). Diverse techniques have been developed to deal with water quality concerns. Carbon based nanomaterials, especially carbon nanotubes (CNTs) with their high specific surface area and associated adsorption sites, have drawn a special focus in environmental applications, especially water and wastewater treatment. This critical review summarizes recent developments and adsorption behaviors of CNTs used to remove organics or heavy metal ions from contaminated waters via adsorption and inactivation of biological species associated with CNTs. Foci include CNTs synthesis, purification, and surface modifications or functionalization, followed by their characterization methods and the effect of water chemistry on adsorption capacities and removal mechanisms. Functionalized CNTs have been proven to be promising nanomaterials for the decontamination of waters due to their high adsorption capacity. However, most of the functional CNT applications are limited to lab-scale experiments only. Feasibility of their large-scale/industrial applications with cost-effective ways of synthesis and assessments of their toxicity with better simulating adsorption mechanisms still need to be studied.

scholarly journals An Overview of Nanomaterials for Water and Wastewater Treatment

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Haijiao Lu ◽  
Jingkang Wang ◽  
Marco Stoller ◽  
Ting Wang ◽  
Ying Bao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Wastewater Treatment ◽  
Metal Oxide Nanoparticles ◽  
High Reactivity ◽  
Adsorption Properties ◽  
Oxide Nanoparticles ◽  
Water And Wastewater Treatment ◽  
The Subject ◽  
Water And Wastewater ◽  
Active Research

Due to the exceptional characteristics which resulted from nanoscale size, such as improved catalysis and adsorption properties as well as high reactivity, nanomaterials have been the subject of active research and development worldwide in recent years. Numerous studies have shown that nanomaterials can effectively remove various pollutants in water and thus have been successfully applied in water and wastewater treatment. In this paper, the most extensively studied nanomaterials, zero-valent metal nanoparticles (Ag, Fe, and Zn), metal oxide nanoparticles (TiO2, ZnO, and iron oxides), carbon nanotubes (CNTs), and nanocomposites are discussed and highlighted in detail. Besides, future aspects of nanomaterials in water and wastewater treatment are discussed.

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