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Iranian Journal of Health Sciences، جلد ۳، شماره ۱، صفحات ۱-۹
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| عنوان انگلیسی |
Adsorption of Ni(II) and Cd(II) from Aqueous Solutions Using Modified Rice Husk |
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| چکیده انگلیسی مقاله |
Background and purpose: Recently, release of pollutants such as heavy metal ions to the environment becomes one of the most important problems for soil and water. The present study was conducted to introduce modified rice husk (RH) as a new low-cost adsorbent. Materials and Methods: In this study, tartaric acid modified RH (TARH), was used as an adsorbent for removal of Ni(II) and Cd(II) from water samples. This study was conducted in laboratory scale. Employing batch method, solution pH, adsorbent dose, contact time, and initial metals concentration were optimized. Results: The optimum pH for removing of both the investigated metal ions from water solutions was found to be 4.0. The process of Ni(II) and Cd(II) adsorption on TARH reached equilibrium within 45 min. The isotherm evaluations revealed that the Langmuir model attained better fits of the experimental equilibrium data than the Freundlich model. In addition, adsorption kinetics data were well-fitted by the pseudo-second-order rate model with high regression coefficients. Conclusion: It was found that TARH is a highly efficient adsorbent for Ni and Cd from aqueous solution, and the maximum predicted adsorption capacities for Ni(II) and Cd(II) were obtained as 55.5 and 45.5 mg/g, respectively. |
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| نویسندگان مقاله |
سهیل سبحان اردکانی | soheil sobhanardakani
department of the environment, school of basic sciences, hamedan branch, islamic azad university, 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, hamedan branch, islamic azad university, hamedan, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
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| نشانی اینترنتی |
http://jhs.mazums.ac.ir/browse.php?a_code=A-10-435-4&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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