Another team under Dr. Prosenjit Saha is working on the removal of organic halides and pesticides from drinking water using chemically / biologically trans-esterified waste biomass. Water with elevated halide content was passed through a fixed bed of treated biomass (jute, banana, water-hyacinth, elephant grass) and the halide was partly trapped within the biomass. An outlet effluent with acceptable halide content was obtained.

Flow Diagram of the Filter

Fulvic acid removal by iron-functionalized reduced graphene oxide:

Iron-functionalized reduced graphene oxide (fRGO)-coated sand was used for the adsorption of natural organic matter, such as fulvic acid (FA), from synthetic water

A novel synthesis route was achieved to prepare an fRGO nanocomposite

FTIR, optical microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) were applied to investigate the morphologies and structures of fRGO

The effects of pH of the FA solution and the adsorbent dose (0.5–2.5 mg g-1 ) of fRGO were further evaluated for the determination of a possible removal mechanism.

The π– π interaction between the carbon atoms of FA and fRGO and electrostatic interaction