Journal ArticleDOI
Potential of carbon nanotubes in water purification: an approach towards the development of an integrated membrane system
Soumitra Kar,Ramesh C. Bindal,Sivaraman Prabhakar,P.K. Tewari,Kinshuk Dasgupta,Dakshinamoorthy Sathiyamoorthy +5 more
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In this paper, the authors assess the potential of carbon nanotubes (CNTs) as an emerging technology in water purification system, particularly with respect to its potential for the removal of arsenic, fluoride, heavy metals and toxic organic components.Abstract:
The problems of water shortages and lack of access to safe drinking water have been and will continue to grow as major global problems. To alleviate these problems, water purification technologies are being updated. Recent years have witnessed impressive breakthroughs towards practical application of nanostructured materials such as Carbon Nanotubes (CNTs) in the field of water purification owing to their unique thermal, electrical and mechanical properties. These nanoscale structures need to be arranged into well-defined configurations in order to build integrated systems with high efficiency (the nanotubes being reusable, whereas the traditional membranes foul easily and require frequent replacements), high flux (owing to the hydrophobic super smooth inner surface of nanotubes), and with improvements in chemical selectivity (through suitable chemical functionalisation of the CNTs), so that the idea of using CNTs in separation technology can be made realistic and the potential benefits of practical application of these unique materials can be exploited. This paper assesses the CNTs as an emerging technology in water purification system, particularly with respect to its potential for the removal of arsenic, fluoride, heavy metals and toxic organic components.read more
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Environmental concerns and long-term solutions for solar-powered water desalination
Siddhan Siva Kumar,Manishekhar Kumar,Suman Chowdhury,Bharat Singh Rajpurohit,Jaspreet Kaur Randhawa +4 more
TL;DR: In this article , the authors focus on global energy data and the principles of operation of various desalination facilities and provide a comprehensive overview of the most recent published studies on a variety of solar-based desalification techniques.
Journal ArticleDOI
Arsenic Speciation Analysis in Environmental Water by HG-AFS after Solid-Phase Extraction Using Multiwalled Carbon Nanotubes
TL;DR: In this paper, a simple, inexpensive, and sensitive method was developed for the determination of inorganic arsenic species As(III), As(V) and total arsenic in environmental water samples using multiwalled carbon nanotubes (MWCNTs) as solid phase extraction (SPE) adsorbents coupled with hydride generation atomic fluorescence spectrometry (HG-AFS).
Book ChapterDOI
Application of Carbon-Based Nanomaterials for Removal of Biologically Toxic Materials
Sekhar C. Ray,Nikhil R. Jana +1 more
TL;DR: In this article, the removal processes of different classes of biologically toxic materials using different forms of carbon nanomaterials: carbon nanoparticles, carbon nanotubes, graphene, and graphene oxide, as well as some of their most important polymeric and metallic nanocomposites.
Journal ArticleDOI
Customizable Ceramic Nanocomposites Using Carbon Nanotubes
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TL;DR: Adding CNTs in ceramic matrices and then systematically oxidizing them, without substantial reduction in densification, induces significant capability to achieve desirable/application oriented balance between mechanical, electrical, and catalytic properties of these ceramic nanocomposites.
Journal ArticleDOI
Effects of multiwalled carbon nanotubes on the bioavailability and toxicity of diphenhydramine to Pimephales promelas in sediment exposures.
TL;DR: In this paper, the combined effects of multiwalled carbon nanotubes (MWCNTs) and a common pharmaceutical compound (DPH) were examined in the presence of natural sediment for 10 d, with some treatment groups receiving MWNTs.