Biosorption of copper(II) and manganese(II) from waste water using low cost bio adsorbents

Role of Powdered Activated Carbon in the Adsorption Behaviour of Hazardous Lead (Pb) using PDAC as an Adsorbent

“…However, as the pH drops, Pb is less likely to attach because hydrogen ions fight with Pb for the PDAC's adsorption sites and the particles' surface charge increases. The charge of the particles becomes positive, which hinders the binding of positively charged Pb.On the other hand, a decrease in adsorption under pH >6.5 may be due to the career of the adsorption spaces by OH, which hinders the approach of such ions further towards the PDAC surface(El-Azim et al 2019;Pavan Kumar et al 2018;Huang et al 2019). According to the results of the experiment, the pH range within 3 and 7 was optimal for the Pb to adsorb, as given in the following Fig.3.…”