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High-performance polyethylenimine-functionalized lignin/silica porous composite microsphere for the removal of hexavalent chromium, phosphate and Congo red from aqueous solutions

Hexavalent ChromiumChemical EngineeringEngineeringPorous CarbonEnvironmental EngineeringWater PurificationEnvironmental RemediationSeparation TechnologyBio-based SorbentAqueous SolutionsAdvanced SeparationWastewater Treatment