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Water treatment using Nanotechnology

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by

mays shadeed

on 28 May 2014

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Transcript of Water treatment using Nanotechnology

Nanotechnology Applications in Water Treatment

-
Commercialization and cost effectiveness.
-Potential risks (the environment
& Humans).
Conclusion
Nanotechnology in water purification
Solve current water problems
Enhance water quality
Reduce using traditional disinfectants chemicals
Done by:
Mays A. Shadeed
Submitted to:

Dr.Nehal Abu Lail
May, 28th, 2014

- Major applications of Nanotechnology in water treatment.

-More details about nano-enhanced membranes.

- Challenges facing nanoenhanced WT technologies.

-Future vision
Nanotechnology in Water Treatment
Photocatalysis
Disinfection and microbial control
Sensing and monitoring
Adsorption
Nanomembrane
Nanofiber
Nanocomposite
Thin film Nanocomposite
Biological inspired membrane

Objective
-To remove the organic and inorganic material
- Very high surface area.
- can be functionlized easily.

Special properties:
Experimentally:
-Higher efficiency.
-More durability.

-The ability to regeneration for several times.
material used:
- Nano-Ag,
-TiO2
- ZnO, MgO, Ce2O4.
-CNT.
-
The stability the nanomaterials.
-Compatibility with the current
infrastructure.
Thank you for listening and attention.
Any Questions?

Membranes offer a leapfrogging opportunity in the removal of a very wide range of contaminants from water such as: minerals, particulates, microorganisms, and natural organic material.

The effectiveness of the membranes are usually characterized by the
recovery
and the
salt rejection
by the membrane.
Common Modifications:

-Modifying existence membranes:
Nanocomposite membrane.
Thin film coating membrane.

- Creating new membrane materials:
Nanohollow fiber membranes.
Biological inspired membrane.

-They have a high porosity.

-Huge surface area to volume ratio.

-Easy to be functionlized.
Why are we interested in nanofiber?
Material used:
-TiO2, Zeolite and AL2O3
The Water Demand
Future Vision
A definitive solution for the water treatment problems
Development of handheld devices.
Special nanosensors.

Nano-enhanced Technologies the Newest Trend in the Water Treatment World
The Challenges
Material Used
CNTs:
They are used in pathogens detection by using bioconjugated nanomaterials.

nano-Au
and
QDs:
show spectacular result when used in the trace element sensor production.
70% water
Thin Film Composite
Membrane
Asymmetric Membrane
The greatest breakthrough was achieved by Cattode.
- A very thin layer of aromatic-polyamide was suggested to create directly on the surface of polysulfone layer
Nanophotocatalysits are used for hazardous and nondegaradble substances removal from water.
Disinfection is an urgent step to kill all pathogenic microorganisms exist in water.
Many disinfectants are commonly used such as: chlorine, ozone, etc.
Presentation content
Carbon based


metal based


Polymer based


Examples:
http://cnx.org/content/m41397/latest/
http://www.aid-n.com/water-resources-distribution-of-the-worlds-water/
http://www.ksb.com/ksb-pk/Products_and_Services/
http://www.moontrail.com/sawyer-point-zero-two-purifier.php
https://acswebcontent.acs.org/prfar/2008/AC7.HTM
http://www.azonano.com/article.aspx?ArticleID=2603
http://pubs.rsc.org/en/content/articlelanding/2012/dt/c2dt31550e#!divAbstract
http://www.techamender.com/aquaporin-natures-clean-water-filter/
http://www.nanowerk.com/spotlight/spotid=6810.php
http://www.chemistryviews.org/details/ezine/968077/Design_of_Polymeric_Porous_Adsorbent_Media.html
http://www.democritos.it/the-group/index.php/Main/Carbon
http://www.intechopen.com/books/carbon-nanotubes adsorption-and-photo-degradation
http://www.amjtj.com/en/projekty/fotokatalyticke-aplikace/
http://ch40finalprojectbio.weebly.com/
http://www.nanowerk.com/spotlight/spotid=366.php
Work Cited

X. Qu, P.J. Alvarez, Q. Li
, Applications of nanotechnology in water and wastewater treatment, Water Rese-arch, 47(12), 1 August 2013, pp 3931-3946.
M.G. Buonomenna
, Nano-enhanced reverse osmosis membranes Review Article, Desalination, 314, 2 April 2013, pp 73-88.
T. F. Barker, L. Fatehi, M. T. Lesnick, T. J. Mealey, R. R. Raimond
, Nanotechnology and the Poor: Opportunities and Risks for Developing Countries, Nanotechnology & Society, 2, 2011, pp 277-290.
H. T. Madsen
, Membrane Filtration in Water Treatment – Removal of Micropollutants,Chemistry of Advanced Environmental Purification Processes of Water, 2014, pp 199-248.
J.E. Cadotte, R.J. Petersen, R.E. Larson, E.E. Erickson
, A new thin-film composite seawater reverse osmosis membrane, Desalination, 32, 1980, pp 25–31.
K. P. Lee, T. C. Arnot, D. Mattia
, A review of reverse osmosis membrane materials for desalination—Development to date and future potential Review Article, Journal of Membrane Science, 370(1-2), 15 March 2011, pp 1-22.

http://www.bza.org/zeolites.html
Improving the water quality monitoring
Nanomembrane
Full transcript