Water Remediation

Water pollution due to the indiscriminate disposal of industrial and domestic wastes poses a serious environmental hazard both nationally and internationally. Worldwide, 780 million people still lack easy access to clean potable water. According to a recent report, it is estimated that around 37.7 million Indians are affected by waterborne diseases annually, with an estimated 1.5 million children dying from diarrhea alone, and 73 million working days are lost due to waterborne diseases each year. Our lab is continuously working on industrial waste water remediation and development of a low cost water filter.

Graphene Nanofiber for Photocatalytic Activity:

Recently, we reported the graphene-oxide-based hydrophobic nanofibers fabricated using electrospinning technique for photocatalytic degradation of Rhodamine 6G dye under natural sunlight illumination. The synthesized nanofibers were characterized using X-ray diffraction, EDX, field emission scanning electron microscopy and FTIR spectroscopy. These large-area reusable graphene oxide nanofibers provide a scalable and novel route for photocatalytic degradation of carcinogenic dyes from industrial water.

(b) Graphene Xerogel for Heavy Metal Ion Detection:

Recently, we fabricated graphene-based 3D porous xerogel through molecular self-assembly of graphene oxide on chitosan matrix and its application in removal of different heavy metal ions from wastewater was investigated. The synthesized xerogel was characterized through FTIR, SEM, XRD and BET surface area analysis. Heavy metal ions, including Pb(II), Cd(II), and Hg(II), were removed from wastewater using this graphene-chitosan (GO-Cs) xerogel and the removal efficiency was monitored through inductively coupled plasma mass spectrometry (ICP-MS).

(c) Development of Low Cost Water Filter:

Recently, we have synthesized highly porous graphene like material in bulk amount in extreme low cost from grass. We have filed the invention disclosure for the same. A low cost water filter is being built with these materials along with activated charcoal which is expected the lower the cost significantly.

Related Publications

[1]. “Reusable graphene oxide nanofibers for enhanced photocatalytic activity: a detailed mechanistic study”, Shailendra Kumar Sharma, Shivali Sokhi, Chandrajit Balomajumder, Soumitra Satapathi, , Journal of Materials Science, 52, 9,5390–5403, 2017.

[2]. “Graphene-Based 3D Xerogel as Adsorbent for Removal of Heavy Metal Ions from Industrial Wastewater”, Purnendu, Soumitra Satapathi, Journal of Renewable Materials, 5, 2, 96-102, 2017.