MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202641063632 A) filed by Sneha M K; and Mangalpady Aruna, Mangaluru, Karnataka, on May 20, for 'a method and system for phytoremediation-based sustainable utilization of gold ore tailings for agricultural applications.'
Inventor(s) include Sneha M K; Mangalpady Aruna; Karthik B S; Dr Uma G Hullur; Dr. Channabassamma N; and Sangamesh N.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "A method and integrated system are disclosed for the phytoremediation-based sustainable utilisation of gold-ore tailings for agricultural applications. The method comprises characterising the gold-ore tailings for physico-chemical and heavy-metal parameters, mixing the characterised tailings with local soil at 30-60% w/w loading, amending the mixture with mature compost (1.8% w/w) and NPK fertiliser, supplemented by a PGPR inoculant, establishing a hyperaccumulator or accumulator plant species selected from Pteris vittata, Page 18 of 19 Complete Specification - Phytoremediation of Gold Ore Tailings Brassica juncea, Helianthus annuus, Solanum nigrum and Vetiveria zizanioides, allowing said plant to grow for 100-180 days while monitoring bioconcentration and translocation factors, harvesting the metal-laden aerial biomass, and finally cultivating a safe food or fodder crop on the remediated substrate. The integrated system implementing the said method () comprises a sample preparation unit (104), a characterisation laboratory (106, 108), a mixing unit (110), an amendment unit (112), a plantation bed (114), a monitoring system (126), a harvesting unit (118), a biomass disposal/metal-recovery unit (124), and a safe-crop cultivation section (122). The invention converts gold-ore tailings, hitherto regarded as an environmental liability, into a productive agricultural resource without the use of transgenic plants or persistent synthetic chelators, and is particularly suited to Indian gold-mining regions."
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