Kavak Ağacı Talaşına Borik Asit İmpregnasyon ile Elde Edilmiş Aktif Karbon (KB-A) ile Sulu Çözeltiden Ağır Metal Giderimi

Abstract

In this study the removal of heavy metals Pb(II), Cr(III), Zn(II) and Co(II) in wastewater with activated carbon (KB-A) obtained by boric acid impregnation to poplar sawdust (K-S) grown in the Van region was investigated. The parameters affecting adsorption were examined and optimum values were determined. For this purpose, the effects of different parameters such as solution pH, KB-A dosage, contact time and metal concentration were studied for their effects on the removal of heavy metals. As a result of the adsorption process, It was observed that the adsorption of all metals decreased with increasing temperature. The adsorption process was found to follow the Langmuir and Freundlich models. The maximum adsorption capacity values were determined as 30.89 mg g-1 for Cr(III), 30.49 mg g-1 for Pb(II), 30.30 mg g-1 for Zn(II) and 27.70 mg g-1 for Co(II). According to the thermodynamic parameter results, the adsorption process was spontaneous, and the reaction followed a pseudo-second-order kinetic model. The KB-A adsorption ability showed a trend ordered from large to small as Cr(III)˃ Pb(II) ˃Zn(II) ˃ Co(II). © 2023, Gumushane University. All rights reserved.