4.6 Article

Enhanced removal of aqueous chromium(VI) by KOH-activated soybean straw-based carbon

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Article Engineering, Environmental

KOH-activated porous biochar with high specific surface area for adsorptive removal of chromium (VI) and naphthalene from water: Affecting factors, mechanisms and reusability exploration

Jianhua Qu et al.

Summary: A high-performance porous biochar (PBCKOH) was successfully synthesized through KOH chemical activation, showing excellent adsorption performance for both Cr(VI) and NAP in water treatment. The PBCKOH achieved high uptake capacities for both contaminants and exhibited multiple kinetics during the adsorption process. The enhanced adsorption of Cr(VI) was mainly attributed to electrostatic attraction, complexation, ion exchange, and reduction actions, while the high NAP uptake was achieved through pore filling and π-π stacking interactions.

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