Microalgae biomass as a sustainable precursor to produce nitrogen-doped biochar for efficient removal of emerging pollutants from aqueous media

نویسندگان

چکیده

Preparing sustainable and highly efficient biochars as adsorbents remains a challenge for organic pollutant management. Herein, novel nitrogen-doped carbon material has been synthesized via facile single-step pyrolysis method using wild mixture of microalgae precursor. Phosphoric acid (H 3 PO 4 ) was employed activation agent to generate pores in the material. In addition, effect melamine (nitrogen source) evaluated over biochar properties by N-doping process. The results showed that biochar's specific surface area (SSA) increased from 324 433 m 2 g −1 with process percentage micropores structure. Chemical characterization indicated helped increase graphitization contents oxygen nitrogen groups on surface. were successfully tested adsorb acetaminophen treat two synthetic effluents, N-doped presented highest efficiency. kinetics equilibrium data well represented General-order model Liu isotherm model, respectively. maximum sorption capacities attained 101.4 120.7 mg non-doped doped biochars, adsorption mechanism suggests pore-filling dominant uptake. could efficiently remove up 74% contaminants effluents. • Microalgal mixtures used precursor produce biochar. Sustainable strategy developing advanced biomass-derived Nitrogen doping boosted number functionalities area. performance due multiple mechanisms. capacity

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ژورنال

عنوان ژورنال: Journal of Cleaner Production

سال: 2022

ISSN: ['0959-6526', '1879-1786']

DOI: https://doi.org/10.1016/j.jclepro.2022.131280