Characterization and isothermal studies of Cd removal from aqueous solutions using sludge-based activated carbon

Zendelska, Afrodita and Pancevska, Vesna and Golomeova, Mirjana and Golomeov, Blagoj and Mirakovski, Dejan and Hadzi-Nikolova, Marija and Doneva, Nikolinka (2022) Characterization and isothermal studies of Cd removal from aqueous solutions using sludge-based activated carbon. Desalination and Water Treatment, 276. pp. 142-149. ISSN ISSN Print 1944-3994, ISSN Online 1944-3986

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Abstract

Generated sewage sludge by wastewater treatment plants is carbonaceous in nature and rich
in organic materials, therefore, it has the potential to be converted into activated carbon. In this
study, the sludge-based activated carbon was obtained using sewage sludge from Volkovo wastewater
treatment plant in Skopje by chemical activation under controlled conditions. Prepared
sludge-based activated carbon was characterized using scanning electron microscope and X-ray
diffractometer, and was studied its application as adsorbent for cadmium removal from aqueous
solutions. The experimental results performed to determine the efficiency of the sludge-based
activated carbon for cadmium removal from aqueous solutions, shows that the removal of Cd was
73.91%. The effects of parameters such as pH, mass of adsorbent, contact time and initial cadmium
ion concentration were investigated and presented in this study. The sludge-based activated carbon’s
maximum capacity was determined in equilibrium studies. Experimental data were fitted to
adsorption models and better fit was obtained with the Langmuir adsorption isotherm.
Keywords: Cadmium; Sewage sludge; Adsorption isotherm; Adsorption capacity; WWTP Volkovo

Item Type:	Article
Impact Factor Value:	1.273
Subjects:	Engineering and Technology > Environmental engineering
Divisions:	Faculty of Natural and Technical Sciences
Depositing User:	Afrodita Zendelska
Date Deposited:	16 Jan 2023 15:26
Last Modified:	16 Jan 2023 15:26
URI:	https://eprints.ugd.edu.mk/id/eprint/30774

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