ORIGINAL RESEARCH
Hybrid Processes Evaluation of Pb(II) Removal
from Wastewater Effluents
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1
University of Prishtina, Department of Chemistry, 10 000 Prishtinë, Republic of Kosova
2
Academy of Sciences and Arts of Kosova, 10 000 Prishtinë, Republic of Kosova
Submission date: 2020-09-11
Final revision date: 2020-11-05
Acceptance date: 2020-11-13
Online publication date: 2021-04-06
Publication date: 2021-06-09
Pol. J. Environ. Stud. 2021;30(4):3261-3267
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ABSTRACT
The hybrid processes potential on Pb(II) removal from wastewater effluents have been investigated.
Batch test conditions were carried out to examine the effects of initial metal concentration, adsorbent
dose, contact time, temperature and initial solution pH on adsorption of Pb(II) ions from aqueous
solution onto wheat bran. The highest adsorption efficiency was observed at solution pH 5, contact time
30 min and temperature 25oC. The adsorption equilibrium data correlate well with both Langmuir and
Freundlich isotherms. Thermodynamic studies suggested the spontaneous and exothermic nature of
adsorption process. The retentate of power plants wastewater sample pretreated with wheat bran was
used as feed for reverse osmosis low-pressure heterogeneous membrane treatment. The high removal
efficiency of Pb(II) and co-existed ions from the above wastewater sample was achieved by hybrid
processes with high preference for re-use.