Activated carbons or functionalized carbonaceous nano-structures like CNTs, graphene etc. will remove Cr..

you can see articles publisher by Hamdaoui walid in Sciencedirect. He has a lot of researches in the fied of new absorbents for water and wastewater polluted by heavy metals.

I have published a book on chromium adsorption by natural material just see it I think you will find it useful

Depends if we are talking about chrome 3 or chrome 6

I am talkin about chromium 6

I think in this case Iron 2 sulfate because you have the contemporary oxidation of iron and reduction of chrome (make sludge)

Hello, you could use the CaCO3 send me your email so I could send you one of my research for this issue.

Groundnut husk removes approximately 97% of Cr(VI).

@bharadwaj vemparala can u elabrote more how groundnut husks can be used to remove chromium its feasibiliy and the cost involved in doing such a project.

Try to use coirpith, groundnut shell etc.

there s one good paper on arsenic removal by p ratna kumar and sanjeev chaudhari.....so u can also try electrocoagulation for the same.........and study the Cr removal...........

We had success using peat and active charcoal for CrVI sorption. In the case of peat, CrVI is reduced to CrIII and retained in a stable coordination complex...