International Journal of Scientific Research and Engineering Development

The escalating volume of agricultural waste poses significant environmental and disposal challenges globally. Concurrently, the demand for nanomaterials, particularly nano silica, continues to grow across various industries due to its exceptional properties. Conventional production of nano silica is often energy-intensive and relies on hazardous chemicals, creating a need for more sustainable pathways. This paradigm shift is addressed by the green synthesis of nano silica from abundant and renewable agricultural wastes, such as rice husk, sugarcane bagasse, corn cob, and wheat straw. These residues are ideal, low-cost precursors due to their high silica content and wide availability. This green synthesis approach employs environmentally benign methods like chemical precipitation, sol-gel techniques, and thermal treatments to extract high-purity, amorphous silica nanoparticles. A key focus of these methods is to minimize ecological impact by reducing energy consumption, avoiding toxic reagents, and utilizing waste as a primary resource. The resulting biogenic nano silica is characterized by its high surface area, controlled particle size, and excellent reactivity, making it comparable or even superior to silica produced from traditional sources. The valorization of agricultural waste into nano silica offers profound economic and environmental advantages, contributing to a circular economy model where waste is transformed into a valuable commodity.

Dr.R.W.Parankar, Sanket Dnyaneshwar Patne, Harshdip Babarao Herode, Nandakishor Raju Chandankhede, Shivani Anil Thorat,"Green Synthesis of Nano Silica from Agricultural Waste" International Journal of Scientific Research and Engineering Development, V9(2): Page(1824-1826) Mar-Apr 2026. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.