Multiple heavy metal removal simultaneously by a biomass?based porous carbon

Activated carbon from sawdust was produced with an environmentally friendly process involving single-stage carbonization and activation steam at 800°C. Production is scalable because lignocellulosic biomass ubiquitous worldwide as a waste or virgin material. Single-stage production without any cooling steps between easier in larger scale production. Monometal adsorption multimetal of cobalt, nickel, zinc were investigated by using the carbon, commercial one control. Effect pH, initial metal concentration, adsorbent dosage, time evaluated batch experiments. Multimetal experiments showed order maximum capacities: > nickel cobalt. Experimental capacities 17.2, 6.6, 4.5 mg/g for zinc, respectively, multisolute adsorption. In case monometal adsorption, capacity notably lower. data fitted into single-solute Freundlich models. The best fit kinetic model varied among metals. Weber Morris intraparticle diffusion used. Regeneration performed 0.1 M HNO3, HCl, H2SO4. remained same within three adsorption–desorption cycles. Practitioner points heavy metals studied Best-fitting models to experimental could be diluted acids Worldwide available raw material successfully used