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Paper Information

Journal:   JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES)   WINTER 2016 , Volume 68 , Number 4; Page(s) 583 To 594.
 
Paper: 

REMOVAL EFFICIENCY OF SOME ORGANIC SORBENTS IN REMOVING OF CADMIUM FROM AQUEOUS SOLUTION

 
 
Author(s):  SEPEHR EBRAHIM*, TOSAN AMIR
 
* FACULTY OF AGRICULTURE, UREMIA UNIVERSITY, URMIA, IRAN
 
Abstract: 

The application of organic sorbents for removing heavy metal from water, replacing expensive sorbents, is particularly appropriate for developing countries. To investigate the efficiency of some organic sorbents in removing of Cd2+ from aqueous solution, an experiment was conducted with three organic sorbents (sunflower stalks, apple and grapevine pruning residues) and 11 initial concentration of Cd2+ (0- 200 mg L-1) at three pH (4, 6, 8). The results showed that three organic sorbents have relatively high removal efficiency (RE) for cadmium from aqueous solution, and RE increased with increasing of pH but initial concentration of cadmium showed invers effect. The highest RE was obtained at pH 8 and low initial concentration of Cd (£10 mg L-1) for all three organic sorbents. Among sorption models (Langmuir, Temkin and Freundlich), Langmuir model was better fitted for experimental data (R2= 0.99). At pH8, maximum mono layer adsorption (qmax) of sunflower stalks, apple and grape pruning residues were obtained 8905, 8155 and 7895 mg kg-1, respectively. All sorption parameters (qmax, A, KF, KT, KL, n) of sunflower stalks was more than those of apple and grape pruning residues. Therefore, sunflower stalks in comparison to apple and grape pruning residues, have a high efficiency in removing of cadmium from aqueous solution. The Gibbs free energy of reaction (DGr) and separation factor of Langmuir (RL) indicated that the sorption reactions of Cd2+ by all three bio sorbents are spontaneous and favorable.

 
Keyword(s): ADSORPTION ISOTHERM, AQUEOUS SYSTEM, CADMIUM, ORGANIC SORBENTS, PH
 
 
References: 
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Click to Cite.
APA: Copy

SEPEHR, E., & TOSAN, A. (2016). REMOVAL EFFICIENCY OF SOME ORGANIC SORBENTS IN REMOVING OF CADMIUM FROM AQUEOUS SOLUTION. JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), 68(4), 583-594. https://www.sid.ir/en/journal/ViewPaper.aspx?id=508346



Vancouver: Copy

SEPEHR EBRAHIM, TOSAN AMIR. REMOVAL EFFICIENCY OF SOME ORGANIC SORBENTS IN REMOVING OF CADMIUM FROM AQUEOUS SOLUTION. JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES). 2016 [cited 2021May08];68(4):583-594. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=508346



IEEE: Copy

SEPEHR, E., TOSAN, A., 2016. REMOVAL EFFICIENCY OF SOME ORGANIC SORBENTS IN REMOVING OF CADMIUM FROM AQUEOUS SOLUTION. JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), [online] 68(4), pp.583-594. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=508346.



 
 
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