Please suggest some easily available and highly efficient adsorbents for waste water treatment.

I want to do my B.E. project on the topic- "Adsorbent for waste water treatment," please suggest naturally available adsorbents which are cheap and easily available

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So research Lignin further. Its not exactly hard to source as a material, but what are these modifying chemicals ?

Deepak91 (author) 3 years ago

Thanks a lot for all those suggestions but further i would like to ask about "lignin". The recent studies shows that lignin can be used as adsorbent for the removal of heavy metals from waste water. But how it can be used? whether it needs modification or not?

What have you found so far ? Its your project, not ours.

Deepak91 (author)  steveastrouk3 years ago

I have found that lignin as a possible option to be used as an adsorbent, but it needs to be modified by the chemicals which are not easily available

Try activated charcoal many water purifiers use it.

One filtering method uses UV light to kill bacteria, sand to remove solids, and activated charcoal to remove other dissolved impurities, in that order.

Vyger3 years ago

Old panty hose stuffed with human hair works really good for soaking up oil spills on water. Lots of hair is usually available at barber shops and its free for the picking up. Although in some places it is getting the designation of "medical waste" since it is human byproduct.

It sounds like you pulled this topic out of a hat, or got it handed to you, or something like that. I'm guessing the words are not your own, I mean, why use quote marks for your own words?

I think the choice for an adsorbent kinda depends on what compounds you want to adsorb, which I guess depends on the source of your wastewater. Is it from a wastewater from a factory process contaminated with some particular chemical, or is just sewage from a town? Also what do you want to do with the saturated adsorbent? Regenerate it? Dispose of it? Maybe that's why you want the cheap kind.

Years ago, I got to on a field trip to a waste water treatment plant. It was the kind for treating sewage from a town. There were lots of concrete channels and open ponds, all filled with churning, brown, sewage water. The wind was blowing that day, and every so often a gust of wind would pick up some mist, a spray of fine droplets, and deposit it on our tour group.

Ah, good times. ;-)

If I remember correctly, this plant was not trying to adsorb anything. They just filtered out all the plastic trash, and then let the bacteria already present in the water do the rest of the work. They had special aeration ponds for the aerobic bacteria, and enclosed, shielded from air, ponds for the anaerobic bacteria, and I don't remember what else.

Of course you don't need me for the overview. That's what Wikipedia is for:


Kiteman3 years ago
antoniraj3 years ago

I think you should try your project with Effective Microorganisms (shortly known as EM). Please go through this link. EM is available in India also