MUMBAI, India, Sept. 14 -- Intellectual Property India has published a patent application (202641108143 A) filed by Dr T S Arul Jeevan on September 09, 2026, for Waste-Derived Magnetic Biochar–chitosan Composite And Regeneration Method For Simultaneous Removal And Recovery Of Heavy Metals And Organic Dyes From Wastewater.
Inventors include Dr T S Arul Jeevan; D. Priya; Dr. J. Ramkumar; P. Usha; Dr. S. Anitha; Mr. Sandy Subala Soosai Michael; . Dr. A. Maria Kulandai Raja Balan; and Dr. R. Senthil Kumar.
The application for the patent was published on September 11, 2026, under issue no. 37/2026.
Abstract: A regenerable composite material and associated method are disclosed for the simultaneous removal and recovery of heavy metals and organic dyes from contaminated water. The composite is synthesized from agricultural and seafood processing waste streams, namely rice husk and shrimp shell, which are respectively converted into a porous biochar matrix and a chitosan biopolymer coating. A magnetic core comprising iron oxide (Fe3O4) nanoparticles is embedded within the porous biochar framework to enable magnetic-field-assisted separation, while iron-based catalytic sites and surface functional groups (–COOH, –OH, –NH2) provide dual adsorption and catalytic-degradation capability. In use, the composite is contacted with contaminated water to simultaneously adsorb heavy-metal ions and organic dye molecules and to catalytically degrade the adsorbed dyes. The loaded composite is thereafter separated from the treated water using an external magnetic field, subjected to a regeneration step using an acidic or chelating elution solution to desorb and recover the bound heavy metals in concentrated form, and the regenerated composite is returned to the treatment cycle for reuse. The disclosed material and method provide a low-cost, waste-valorizing, multi-cycle-reusable water-treatment solution that simultaneously addresses heavy-metal and dye contamination while recovering valuable metals, thereby closing the loop between waste valorization, water purification, and resource recovery.
Disclaimer: Curated by HT Syndication.
