Annadurai G.Juang R.S.Lee D.J.2019-05-142019-05-14200302731223https://scholars.lib.ntu.edu.tw/handle/123456789/407927Liquid-phase adsorption removal of Cu2+, Co2+, Ni2+, and Pb2+ in the concentration range of 5-25 mg/L using low-cost banana and orange peel wastes was examined at 30 ¢XC. Under comparable conditions, the amount of adsorption decreased in the order Pb2+ > Ni2+ > Zn2+ > Cu2+ > Co2+ for both adsorbents. The adsorption isotherms could be better described by the Freundlich equation. The amount of adsorption increased with increasing pH and reached a plateau at pH > 7, which was confirmed by the variations of zeta potentials. The application potential of such cellulose-based wastes for metal removal (up to 7.97 mg Pb2+ per gram of banana peel at pH 5.5) at trace levels appeared to be promising.Adsorption removalFruit peelsHeavy metalsZeta potentialsconference paper2-s2.0-0346037250https://www.scopus.com/inward/record.uri?eid=2-s2.0-0346037250&partnerID=40&md5=0c00c764fa5ffc2beacf76bef3a57bee