Abstract: Disclosed herein are a novel chitosan-biochar composite fiber for effective removal of phosphorus from aqueous solutions, a manufacturing method therefor, and a phosphorus adsorbent composition comprising same. Specifically, disclosed are a method for manufacturing a chitosan-biochar composite fiber for removal of phosphorus from aqueous solutions, a chitosan-biochar composite fiber manufactured by the method, and a phosphorus adsorbent composition comprising same, wherein the method comprises the steps of: (1) pyrolyzing paper mill sludge in a carbon dioxide (CO2) or nitrogen (N2) gas atmosphere to prepare a biochar; (2) mixing the biochar prepared in step (1) with a chitosan solution, together with FeCl3.6H2O, followed by stirring to give a mixture; (3) extruding the mixture in a sodium hydroxide solution with the aid of a needle to gel chitosan; and (4) crosslinking the chitosan gel in a glutaraldehyde solution and rinsing and neutralizing the same to afford a chitosan-biochar composite fiber.

Abstract: An evaluation method capable of evaluating whether or not waste plastic-derived porous carbon can be applied on an industrial scale, according to the present disclosure, may include the steps of evaluating CO2 capture performance using a 5-step temperature vacuum swing adsorption (TVSA) process, assessing economic feasibility in an industry using a techno-economic assessment (TEA) method, and quantifying environmental impacts of the porous carbon production pathway and global warming potential (GWP) using cradle-to-gate life-cycle assessment (LCA). A method for manufacturing porous carbon, according to the present disclosure, may include the steps of carbonizing a polyethylene terephthalate plastic, activating the carbonized plastic with CO2, and performing cooling.

Abstract: Disclosed herein are a novel chitosan-biochar composite fiber for effective removal of phosphorus from aqueous solutions, a manufacturing method therefor, and a phosphorus adsorbent composition comprising same. Specifically, disclosed are a method for manufacturing a chitosan-biochar composite fiber for removal of phosphorus from aqueous solutions, a chitosan-biochar composite fiber manufactured by the method, and a phosphorus adsorbent composition comprising same, wherein the method comprises the steps of: (1) pyrolyzing paper mill sludge in a carbon dioxide (CO2) or nitrogen (N2) gas atmosphere to prepare a biochar; (2) mixing the biochar prepared in step (1) with a chitosan solution, together with FeCl3.6H2O, followed by stirring to give a mixture; (3) extruding the mixture in a sodium hydroxide solution with the aid of a needle to gel chitosan; and (4) crosslinking the chitosan gel in a glutaraldehyde solution and rinsing and neutralizing the same to afford a chitosan-biochar composite fiber.