The best adsorbent is undoubtedly active charcoal

Other materials can be used in particular in the case where there is the possibility of recycling vegetable waste, but there are always small problems to be solved

Otherwise the references given by  Mohammad Aljaradin · and  Amin Shavandi

are excellent

Hello Paramasivan,

There is a wide range of adsorbent that can be used for fabrication of the reactor bed. ranging from natural organics such as chitosan, algae or TiO2 photocatalyst. the selection of the adsorbent depends on a number of parameters including the type of dye (acid dye, basic, mixture,...), dye concentration, bed height, flow rate, maximum uptake, the adsorption capacity of the material, cost, adsorption kinetic,  recycle ability and etc.

 Please see following papers which I think would be helpful and give you some information to better decide on the design of your system

http://www.tandfonline.com/doi/abs/10.1080/19443994.2015.1085910?src=recsys&journalCode=tdwt20

http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5517518

http://www.sciencedirect.com/science/article/pii/S2213343714001651

http://www.sciencedirect.com/science/article/pii/S0960852415002321

Hope it helps

Amin

The best adsorbent is undoubtedly active charcoal

Other materials can be used in particular in the case where there is the possibility of recycling vegetable waste, but there are always small problems to be solved

Otherwise the references given by  Mohammad Aljaradin · and  Amin Shavandi

are excellent

Hi,

you could try zeolites, LTA, also synthetic.

Dear Paramasivan,

Biofilm systems (packed bed, MBBR/FBBR, ...) barely remove color from textile dyes as compared to advanced activated sludge (AAS) based systems.

This is one of the conclusions from our in-depth assessment of 20 large textile dyeing and finishing wastewater plants in Bangladesh on behalf of the IFC (World Bank Group). Attached you can find an extract of our summary report .

Regards,

Bruno