Abstract

Adsorption of Cu(II) and Ni(II) ions onto the waste powdered activated sludge biomass (PWB), which was obtained from the biological wastewater treatment plant, was investigated in this experimental study. The effects of contact time, pH, temperature, initial sorbate and sorbent concentrations on the adsorption were determined. The BET surface area, pore volume, and pore diameter of PWB were found to be about 0.51 m2/g, 0.0053 cm3/g, and 41.4 nm, respectively. Considering the R2 value, qexp and qcal, the Langmuir and Freundlich models were well described for Cu(II) and Ni(II) adsorption, respectively. The adsorption mechanism of Cu(II) and Ni(II) onto the PWB could be better simulated by the pseudo-second-order kinetic mechanism than the pseudo-fi rst-order, intra particle diffusion and Elovich models. Thermodynamic aspects of the adsorption of heavy metals were also investigated. Considering the applied desorbing agents for reuse of PWB for Ni(II) recovery, desorption cycle is not feasible due to the deterioration of the PWB structure.

Details

Title
Biosorption of Cu2+ and Ni2+ Ions From Aqueous Solutions Using Waste Dried Activated Sludge Biomass
Author
Aslan, Sukru 1 ; Yildiz, Sayiter 1 ; Ozturk, Mustafa 2 

 Department of Environmental Engineering, Sivas Cumhuriyet University, 58140, Sivas, Turkey 
 Department of Organic Agriculture, Sivas Vocational School of Higher Education, Sivas Cumhuriyet University, 58140, Sivas, Turkey 
Pages
20-28
Publication year
2018
Publication date
2018
Publisher
De Gruyter Poland
ISSN
15098117
e-ISSN
18994741
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2167918438
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.