Exploring the possibility of removing chromium(IV) from aqueous solution using zeolite clinoptilolite

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KHASHEI SIUKI A.; SHAHIDI A.; Taherian P.; Zeraatkar Z.

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Journal: Journal of Water and Soil Conservation Year:2017 | Volume:24 | Issue:4 Page(s): 243-258

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Title

Exploring the possibility of removing chromium(IV) from aqueous solution using zeolite clinoptilolite

Author(s)

KHASHEI SIUKI A. | SHAHIDI A. | Taherian P. | Zeraatkar Z. | Issue Writer Certificate

Keywords

AdsorptionQ2

ChromiumQ1

Zeolite clinoptiloliteQ1

Isotherm modelQ1

Kinetic modelQ1

Abstract

Background and Objectives: The most important toxic heavy metals and carcinogenic pollutants in the environment are very high. One of the most important and most widely used heavy metal Chromium. Chromium is a heavy metal that is through the digestive system and absorption through the skin and stored in the human body. The aim of this study was to investigate the possibility of using Zeolite clinoptilolite has been the removal of hexavalent Chromium. Materials and Methods: This study was an experimental study in a batch system in a lab environment pollution College of Agriculture and Natural Resources was conducted. In this study, clinoptilolite zeolite adsorbent mines in Semnan province were prepared. The Adsorption process, the change in pH, contact time, the amount of adsorbent weight, initial Chromium concentration and temperature. Continue to measure the concentration of hexavalent Chromium by atomic absorption spectrometry was used in a laboratory environment Birjand University. Data analysis and graphs were done by Excel software. Experimental isotherms Freundlich and Langmuir isotherm equilibrium models were studied. Results: The results of this study showed that the removal of hexavalent Chromium at pH 5, the contact time of 120 minutes, optimum weight absorbent 3 grams, the initial concentration of 50 ppm and a temperature of 22 ° C, respectively. Due to limited active sites in the sorbent by increasing the initial Chromium concentration, adsorbent dose and temperature, the removal efficiency decreases with increasing time efficiency increases. Experimental isotherms Freundlich and Langmuir isotherm equilibrium models revealed that sorption data with the Langmuir Isotherm model, with a correlation coefficient higher and more consistent standard deviations less than the Freundlich Isotherm models. In kinetic studies, the pseudo second model to attract hexavalent Chromium knows index. Conclusion: The results showed that the absorption kinetics of pseudo-quadratic model and the balance of the Langmuir Isotherm model follows. Overall results of the tests showed that natural Zeolite clinoptilolite can be as economically attractive, effective and inexpensive for the removal of hexavalent Chromium from contaminated drainage water and wastewater use.

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APA: Copy

KHASHEI SIUKI, A., SHAHIDI, A., Taherian, P., & Zeraatkar, Z.. (2017). Exploring the possibility of removing chromium(IV) from aqueous solution using zeolite clinoptilolite. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 24(4 ), 243-258. SID. https://sid.ir/paper/156489/en

Vancouver: Copy

KHASHEI SIUKI A., SHAHIDI A., Taherian P., Zeraatkar Z.. Exploring the possibility of removing chromium(IV) from aqueous solution using zeolite clinoptilolite. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2017;24(4 ):243-258. Available from: https://sid.ir/paper/156489/en

IEEE: Copy

A. KHASHEI SIUKI, A. SHAHIDI, P. Taherian, and Z. Zeraatkar, “Exploring the possibility of removing chromium(IV) from aqueous solution using zeolite clinoptilolite,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 24, no. 4 , pp. 243–258, 2017, [Online]. Available: https://sid.ir/paper/156489/en

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