Agro waste-based nano-biosorbent for removal of cadmium ions (Cd II) from aqueous media

Title : Agro waste-based nano-biosorbent for removal of cadmium ions (Cd II) from aqueous media

Abstract:

Among the various harmful pollutants, toxic heavy metals are the one which are responsible for serious problems in our eco-system. The non-biodegradable nature of heavy metals and bio-accumulation at very low concentrations generate hazardous impacts on flora and fauna. Many techniques viz. reverse osmosis, ultra-filtration, electrochemical deposition, ion exchange, chemical precipitation, etc. are utilized for removal of heavy metals at the cost of high currency or involvement of sophisticated instrumentations. However, adsorption by activated carbon has been used comparatively at lower cost, if its production can be done by low-cost waste materials. The present work deals with the implementation of some principles of “Green Chemistry” and “Nanotechnology” to develop low-cost activated carbon-based nanocomposite for the effective removal Cadmium (Cd II) from contaminated water. In this concern, we have explored the use of Ice-apple fruit shell waste for the production of activated carbon and prepared Iron Oxide nanoparticles from waste orange peel extracts in an eco-friendly way. The nanocomposite/nanosorbent Ice-apple Fruit shell waste activated carbon loaded with Iron Oxide (Fe3O4) Nanoparticles (ION@IFSAC) is then developed by simple immersion method and its removal efficiency is determined by conducting batch adsorption studies, isothermal studies and various factors affecting the adsorption are also run to optimise the conditions. Maximum removal efficiency of (ION@IFSAC) for the adsorption of 10 ppm of Cadmium (Cd II) ion from water was 92% at 40⁰C.

Audience Take Away:

• Low cost agrowaste based nanosorbent is prepared
• Cadmium (II) ion can be remove from water in effective manner
• Other pollutants can also be tested viz. heavymetals, dyes, drugs,etc.
• Wastewater treatment can be done in effective manner
• Pilot-plant for water treatment can be developed
• It can manage solid waste and resolve the problem burning of crop residues

Biography:

Dr. Shweta Vyas studied Chemistry at the JNV University, Jodhpur and got doctorate in 2003. She then joined the research group of Prof. S.R. Vadera at the DRDO, Jodhpur as JRF to develop nanocomposites for camouflage materials. She has CSIR<UGC_NET exam in 2002 and currently working as an Assistant Professor at University of Kota since 2012. One scholar completed her Ph.D. under her guidance and four are pursuing. She has published 29 research articles in reputed journals.