Nanotechnology-enabled water treatment and reuse: emerging opportunities and challenges for developing countries

The availability of clean water is necessary for all aspects of food production, preparation, distribution and consumption. Yet the magnitude, intensity and diversity of water pollution and the depletion of some water resources continue to grow, reducing the availability of clean, usable water and raising the potential for a water-related crisis that would have a severe impact on food processes. These impacts could be especially severe in developing nations where water supplies and treatment technologies are limited. Nanotechnology shows great promise as a feasible means of treating both long-standing and emerging water contaminants, as well as enabling technologies such as desalination of seawater to increase water supply. However, some engineered nanomaterials could also become water pollutants that threaten public and ecosystem health. Accordingly, this paper considers both the applications and implications of nanotechnology within the context of water quality and water security for developing countries.

[1]  Chihpin Huang,et al.  Application of nanosilver surface modification to RO membrane and spacer for mitigating biofouling in seawater desalination. , 2009, Water research.

[2]  E. Hoek,et al.  Effect of mobile cation on zeolite-polyamide thin film nanocomposite membranes , 2009 .

[3]  James A. Smith,et al.  Sustainable colloidal-silver-impregnated ceramic filter for point-of-use water treatment. , 2008, Environmental science & technology.

[4]  S. Martin,et al.  Environmental Applications of Semiconductor Photocatalysis , 1995 .

[5]  Y. Oren,et al.  Capacitive deionization (CDI) for desalination and water treatment — past, present and future (a review) , 2008 .

[6]  Ramunas Stepanauskas,et al.  Co-selection of antibiotic and metal resistance. , 2006, Trends in microbiology.

[7]  Léna Brunet,et al.  Polysulfone ultrafiltration membranes impregnated with silver nanoparticles show improved biofouling resistance and virus removal. , 2009, Water research.

[8]  Perry L. McCarty,et al.  Chemistry for environmental engineering and science , 2002 .

[9]  Vicki Stone,et al.  Research priorities to advance eco-responsible nanotechnology. , 2009, ACS nano.

[10]  Julie Zimmerman,et al.  Design Through the 12 Principles of Green Engineering , 2003, IEEE Engineering Management Review.

[11]  Dongye Zhao,et al.  Field assessment of carboxymethyl cellulose stabilized iron nanoparticles for in situ destruction of chlorinated solvents in source zones. , 2010, Water research.

[12]  P. Alvarez,et al.  Photochemical and antimicrobial properties of novel C60 derivatives in aqueous systems. , 2009, Environmental science & technology.

[13]  T. Xia,et al.  Understanding biophysicochemical interactions at the nano-bio interface. , 2009, Nature materials.

[14]  D. Barceló,et al.  Solar photocatalytic degradation of persistent pharmaceuticals at pilot-scale: Kinetics and characterization of major intermediate products , 2009 .

[15]  John A. Byrne,et al.  The photocatalytic removal of bacterial pollutants from drinking water , 2002 .

[16]  J. T. Mayo,et al.  The effect of nanocrystalline magnetite size on arsenic removal , 2007 .

[17]  Jamie R Lead,et al.  Nanomaterials in the environment: Behavior, fate, bioavailability, and effects , 2008, Environmental toxicology and chemistry.

[18]  J. Hughes,et al.  Designing Pd-on-Au bimetallic nanoparticle catalysts for trichloroethene hydrodechlorination. , 2005, Environmental science & technology.

[19]  P. Alvarez,et al.  Cleaner water using bimetallic nanoparticle catalysts , 2009 .

[20]  Michael V. Liga,et al.  Antimicrobial nanomaterials for water disinfection and microbial control: potential applications and implications. , 2008, Water research.

[21]  Pedro J. J. Alvarez,et al.  Nanomaterials in the construction industry: a review of their applications and environmental health and safety considerations. , 2010, ACS nano.

[22]  Robert Bogue,et al.  Nanosensors: a review of recent research , 2009 .