Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 30, Issue 6, Pages 14943-14958Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-23077-7
Keywords
Lignin; One-pot synthesis; Selective adsorption
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In this study, nitrogen-doped magnetic porous carbon (M-PLAC) with a three-dimensional porous structure was successfully synthesized for the adsorption of organic pollutants in wastewater. The material exhibited high adsorption capacity and selectivity for methylene blue and tetracycline, and demonstrated good performance and regeneration ability in various complex water environments.
Organic pollutants pose a serious threat to water environment, thus it is essential to develop high-performance adsorbent to remove them from wastewater. Herein, nitrogen-doped magnetic porous carbon (M-PLAC) with three-dimensional porous structure was synthesized from lignin to adsorb methylene blue (MB) and tetracycline (TC) in wastewater. The calculated equilibrium adsorption amount by M-PLAC for MB and TC was 645.52 and 1306.00 mg/g, respectively. The adsorption of MB and TC on M-PLAC conformed to the pseudo-second-order kinetic model. The removal of MB by M-PLAC showed fast and efficient characteristics and exhibited high selectivity for TC in a binary system. In addition, M-PLAC was suitable for a variety of complex water environments and had good regeneration performance, demonstrating potential advantages in practical wastewater treatment. The organic pollutant adsorption by M-PLAC was attributed to electrostatic interaction, hole filling effect, hydrogen bonding, and the pi-pi interaction.
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