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Iranian Journal of Health Sciences، جلد ۳، شماره ۲، صفحات ۲۱-۳۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Removal of Hg(II) and Cd(II) Ions from Aqueous Solution Using Chitosan: Kinetics and Equilibrium Studies |
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| چکیده انگلیسی مقاله |
Background and purpose: The discharge of toxic heavy metal ions into the environment is a serious pollution problem. Heavy metal ions pose adverse toxic risks to human health at very low concentrations. The aim of this paper is the adsorption potential of chitosan (CS) in the removal of Hg(II) and Cd(II) ions from aqueous solution. Materials and Methods: This study was conducted in laboratory scale. In this research, CS was used as an adsorbent for the removal of Hg(II) and Cd(II) from aqueous solutions. In batch tests, the effects of various parameters such as metals concentration (40-350 mg/L), pH solution (2-8), contact time (5-120 min), and adsorbent dose (0.25-2 g) were investigated. Results: The results showed that adsorption of Hg(II) and Cd(II) ions on CS strongly depends on pH. The experimental data were analyzed using the Langmuir and Freundlich isotherm models. Equilibrium data fitted well with the Langmuir model and the maximum adsorption capacity of the CS for Hg(II) and Cd(II) were 52.63 and 58.8 mg/g, respectively. Kinetic analysis showed that adsorption was most accurately represented by a pseudo-second-order model. Conclusion: The obtained results showed that CS is a readily, available, economic adsorbent and was found suitable for removing Hg(II) and Cd(II) ions from aqueous solution. |
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| کلیدواژه‌های انگلیسی مقاله |
Adsorption, Chitosan, Mercury, Cadmium, Removal efficiency |
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| نویسندگان مقاله |
سهیل سبحان اردکانی | soheil sobhanardakani
department of the environment, school of basic sciences, islamic azad university, hamedan branch, hamedan, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
راضیه زندی پاک | raziyeh zandipak
young researchers and elite club, islamic azad university, hamedan branch, hamedan, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
آرش جوانشیر خویی | arash javanshir khoei
department of fisheries, school of agriculture and natural resources, university of tehran, karaj, iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)
سید مهدی حسینی | seyed mehdi hosseini
department of the environment, school of natural resources and marine sciences, tarbiat modares university, noor, iran
سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)
مهران مسلمی | mehran moslemi
department of fisheries, jouybar branch, islamic azad university, jouybar, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
پریسا دلفیه | parisa delfieh
department of fisheries, school of marine natural resources, khoramshar university of marine science and technology, khoramshar, iran
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| نشانی اینترنتی |
http://jhs.mazums.ac.ir/browse.php?a_code=A-10-435-5&slc_lang=en&sid=en |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
بهداشت محیط زیست |
| نوع مقاله منتشر شده |
پژوهشی |
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