Adsorption behavior of Pb(II) in aqueous solution using coffee husk-based activated carbon modified by nitric acid
Adsorption behavior of Pb(II) in aqueous solution using coffee husk-based activated carbon modified by nitric acid
In the work Adsorption behavior of Pb(II) in aqueous solution using coffee husk-based activated carbon modified by nitric acid, activated carbon (AC) was prepared from coffee husk and modified by nitric acid for effective lead ions removal from aqueous solution. The as-prepared samples have uniform particles size, developed surface area and contain acidic surface functional groups. Nitric acid modification showed a pronounced effect on improving Pb(II) adsorption capacity. The Freundlich isother