Comparative study of natural and modified Abies bornmulleriana cones in the removal of copper (II) ions

Abies bornmulleriana  cones and their modified forms were used to uptake the Cu (II) ions and compare biosorption efficiency and biosorbent capacity. The effect of various experimental conditions on the uptake of the Cu (II) ions was researched. Additionally, Cu (II) ion removal efficiency and capac...

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Bibliographic Details
Published in:International journal of environmental science and technology (Tehran) 2022-06, Vol.19 (6), p.5343-5358
Main Author: Oguz, Ensar
Format: Article
Language:English
Subjects:
Aquatic Pollution
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Science and Engineering
Original Paper
Soil Science & Conservation
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Abies bornmulleriana  cones and their modified forms were used to uptake the Cu (II) ions and compare biosorption efficiency and biosorbent capacity. The effect of various experimental conditions on the uptake of the Cu (II) ions was researched. Additionally, Cu (II) ion removal efficiency and capacity were investigated in the presence of Pb (II) ions. Besides, the Cu (II) ions' removal mechanism was illustrated in terms of FTIR results. Electrophoretic mobilities of the normal and modified cones were determined to get information about the biosorption. The Brunauer, Emmett, and Teller surface area and pore volume per gram of cones before and after biosorption were identified as (5.05 m 2 and 0.0018 cm 3 ) and (0.97 m 2 and 0.00032 cm 3 ), respectively. The average pore width of the biosorbent before and after the biosorption was calculated as 9.34 and 13.04 Å, respectively. The pseudo-second-order kinetic gave the best fit to the biosorption data (R 2 0.99, 0.99). The biosorption data for the normal and modified biosorbent fitted well to Dubinin–Radushkevitch (D–R) isotherm due to the high R 2 values (0.99, 0.98), and the maximum biosorption capacities were determined as 16.58 and 25.35 mg g −1 , respectively. Δ H °, Δ S °, and Δ G ° parameters were estimated from the linear plot of ln Kd  vs. (1/ T ). The normal and modified biosorbent regeneration with 0.5 N HNO 3 showed that the biosorption and desorption processes were reversible.
ISSN:1735-1472
1735-2630
DOI:10.1007/s13762-021-03496-8