Adsorption and regeneration of leaf-based biochar for -nitrophenol adsorption from aqueous solution.

As an environmentally friendly and low-cost adsorbent, biochar has great potential in wastewater treatment. This study investigated biochar derived from L. leaves (PLB) activated by KOH in terms of its capacity and reusability to adsorb -nitrophenol (PNP).

Removal of chromium (VI) from water by porous carbon derived from corn straw: Influencing factors, regeneration and mechanism.

Porous carbon is one of the most widely used materials to remove Cr(VI) from polluted water. Here we reported one efficient porous carbon material prepared from corn straw. The results of Fourier transform infrared spectroscopy (FTIR), Energy dispersion spectrum (EDS), and X-ray photoelectron spectroscopy (XPS) indicated that the porous carbon surface had functional groups such as COOH, OH and COC, etc, which could be acted as active sites during the adsorption process.