________________________________________________________________________ a Department of Chemistry, PSGR Krishnammal College for Women, Affiliated to Bharathiar University, Coimbatore-641 004, Tamil Nadu, India. *Corresponding author: E-mail: andaldr@gmail.com; Assessment of Agricultural Wastes in the Removal of Hexavalent Chromium N. Muthulakshmi Andal a* and S. Charulatha a DOI: ABSTRACT The present study highlights the assessment of Agricultural Wastes in the Removal of Hexavalent Chromium. Hexavalent chromium is a major pollutant produced by a variety of industrial processes. Adsorbents derived from waste agricultural byproducts have been used to remove hexavalent chromium. Study mainly focused on comparing certain agro based products for the chelation of Cr(VI) ions. An extensive list of agricultural based products such as Coconut Coir, Prunus amygdalus, Cissus quadrangularis, Soapnut Acacia, Justicia adhatoda, Bhringraj, Aerva lanata, Trianthema portulacastrum, Tephrosia purpurea, Solanum nigrum, Datura metel, Cleome viscose, Asparagus racemosus used for Cr(VI) trapping from aqueous solutions and the discharged industrial effluents are reviewed in this work. Chemically altered materials have greater adsorption capacities and are therefore used to modify the reported materials in the research articles in particular ways. For further investigation into the extensive use of the used materials, the results reported by the authors have been compared and summarized. the comparative study on biosorbents proves that they possess high potential in full- scale for the removal of toxic metal ions. Keywords: Hexavalent chromium; adsorption; modification; agricultural by- products; comparison. 1. INTRODUCTION Chromium exists intrivalent and hexavalent forms in aqueous systems. The trivalent form is an essential nutrient, but hexavalent form is toxic, carcinogenic and mutagenic in nature. It is highly mobile in soil and aquatic system and also is a strong oxidant capable of being adsorbed by the skin [1]. The main human activities that heavily contaminate soil with toxic metals include metal-rich mine tailings, metal smelting, electroplating, gas exhausts, energy and fuel production, down wash from power lines, intensive agriculture, and sludge disposal [2,3]. An increased use of metals and chemicals in the process industries has resulted in