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+ Nano metal oxides
+ Transition metal oxides
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Pamela Anne Trinidad

What are the disadvantages of using nanomaterials in water and...

Andrew Wiltshire  Follow

Dear All,
According to my experiences, the most common challenges using nanomaterials for water treatments are:
1- Collecting these nano materials after treatment
2- Preventing agglomeration or aggregation of nanomaterials in the wastewater
3- Leaching of new contaminations from the nanomaterial composites (binary or ternary complexes) to the wastewater sample


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Bert Willke  Follow

You may find these articles helpful to your research as they provide a review about the recent advancements in the application of nanoparticles for water/contaminated water/ wastewater treatment.
  1. Potential of Magnetic Nanoferrites in Removal of Heavy Metals from Contaminated Water: Mini Review. https://doi.org/10.1007/s10948-020-05657-1
  2. Recent advances in synthesis, characterization, and applications of nanoparticles for contaminated water treatment- A review. https://doi.org/10.1016/j.ceramint.2020.09.050
Thanks and Regards. Feel free to contact me if you need to.

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Donna J. Nichols-Lawrence  Follow
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Bilal Sayed  Follow

Azeeza, Himdad Hamad, and Azeez Abdullah Barzinjya. "Biosynthesis zinc oxide nanoparticles using Apium graveolens L. leaf extract and its use in removing the organic pollutants in water." DESALINATION AND WATER TREATMENT 190 (2020): 179-192.

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Chris Mansker  Follow

There are following drawbacks in using nanomaterials at WW treatment plants:
1. aggregation of nanoparticles in WW
2. Water contamination by leaching of nano composites
3. Human toxicity due to skin exposure of nano particles
4. Difficulties in disposing nano wastes after WW treatment


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Carl Bussmann MD  Follow
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Ashok Rangnekar  Follow

Dear Mutasem Z. Bani-Fwaz

This article may helps you
https://doi.org/10.1155/2016/4964828

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Colin Reed  Follow


Dear Mutasem Z. Bani-Fwaz,

Current research in nanotechnology offers the possibility of developing technically and economically viable alternatives to conventional wastewater treatment. Nanocatalysts can effectively be used for chemical oxidation of organic and inorganic pollutants in water in advanced oxidation processes (AOP). Biggest drawback for nanaocatalysts is the high operating cost of providing the required light energy (UV radiation), which is why this technology is still not considered to be economically viable. It also has its own disadvantages, such as aggregation, oxidation, and separation difficulty from the degraded system.

Disadvantages
Example
1. A disadvantage of bactericidal nanoparticles in general except for nano-TiO2 is that no bactericidal substances such as hydroxyl radicals remain in the water past the contact time that could ensure the water quality in storage and distribution devices (depot effect).
2. The stability is depending on the essential chemical resistance which applies for material cleansing. The disadvantages are less reliability, slow operation process, less selectivity; high maintenance cost and working efficiency reduce with passage of time. There are some common disadvantages that is why it is not extensively explored.

Ashish

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Angus Mccamant  Follow

Hi everyone based on my personal research, nanomaterials are an effective way remove various pollutants in water and have been successfully applied in water and wastewater treatment, keeping that in mind a couple disadvantages are that:
- Because of size and quantity it is a long and difficult process of retrieve nanomaterials after the treatment process.
-The agglomeration rate increases, which block the reaction and absorption sites making the process less efficient.



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Dahny Patel  Follow

Dear Sir
Please Check the following citations which may be useful for you
Article Innovations in nanotechnology for water treatment


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David Bangley  Follow

Increasing agglomeration rate causing blockage of reaction and adsorption sites and difficultly in recovering after the treatment are the two major ones

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Chee-Eng, Lim  Follow


Dear Mutasem Z. Bani-Fwaz,

Current research in nanotechnology offers the possibility of developing technically and economically viable alternatives to conventional wastewater treatment. Nanocatalysts can effectively be used for chemical oxidation of organic and inorganic pollutants in water in advanced oxidation processes (AOP). Biggest drawback for nanaocatalysts is the high operating cost of providing the required light energy (UV radiation), which is why this technology is still not considered to be economically viable. It also has its own disadvantages, such as aggregation, oxidation, and separation difficulty from the degraded system.

Disadvantages
Example
1. A disadvantage of bactericidal nanoparticles in general except for nano-TiO2 is that no bactericidal substances such as hydroxyl radicals remain in the water past the contact time that could ensure the water quality in storage and distribution devices (depot effect).
2. The stability is depending on the essential chemical resistance which applies for material cleansing. The disadvantages are less reliability, slow operation process, less selectivity; high maintenance cost and working efficiency reduce with passage of time. There are some common disadvantages that is why it is not extensively explored.

Ashish

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