π€ Lignin Extracted from Green Coconut Waste Impregnated with Sodium Octanoate for Removal of Cu²⁺ in Aqueous Solution πΏπ§ π Introduction: Turning Waste into a Sustainable Solution π±♻️ In today’s world, environmental challenges like heavy metal pollution are among the most pressing issues. Industrial effluents, mining operations, and urban runoff continuously release hazardous metals such as copper (Cu²⁺) , lead (Pb²⁺), cadmium (Cd²⁺), and mercury (Hg²⁺) into water systems π§. These toxic pollutants pose severe risks to aquatic ecosystems π, agriculture πΎ, and even human health π§⚕️. At the same time, millions of tons of agro-waste are generated globally each year π. Among these, green coconut waste (husks, shells, and fibers) is abundant in tropical countries π₯₯. Instead of letting this biomass rot or burn, researchers are finding innovative ways to extract valuable biopolymers like lignin from them. This blog explores an exciting eco-friendly innovation: using li...