Green and sustainable zero-waste conversion of water hyacinth (Eichhornia crassipes) into superior magnetic carbon composite adsorbents and supercapacitor electrodes.

ABSTRACT: Troublesome aquatic weed, water hyacinth (Eichhornia crassipes) was converted into solid and liquid fractions via green and energy-saving hydrothermal carbonization (HTC). The solid product, hydrochar, was employed as a precursor to prepare magnetic carbon materials by simple activation and magnetization using KOH and Fe³⁺ ions, respectively. The obtained magnetic adsorbent possessed good magnetic properties and presented outstanding capacities to adsorb methylene blue (524.20 mg g^-1), methyl orange (425.15 mg g^-1) and tetracycline (294.24 mg g^-1) with rapid adsorption kinetics even at high concentrations (up to 500 mg L^-1), attributed to high specific surface area and mesopore porosity. Besides the solid hydrochar, the w

SUBMITTER: Saning A 

PROVIDER: S-EPMC9069585 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature