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Archives of Hygiene Sciences، جلد ۶، شماره ۲، صفحات ۲۱۴-۲۲۰
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چکیده فارسی مقاله
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عنوان انگلیسی Synthesis and application of iron oxide/silica gel nanocomposite for removal of sulfur dyes from aqueous solutions
چکیده انگلیسی مقاله Abstract Background & Aims of the study: water pollution by synthetic organic dyes is mainly regarded as an environmental and ecological critical issue worldwide. In this research, magnetite iron oxide/silica gel nanocomposite (termed as Fe3O4/SG) was synthesized chemically and then employed as an adsorbent for removal of sulfur dyes from aqueous solution. Materials and Methods: The various parameters such as pH, sorbent dosage, initial concentration, contact time and temperature were investigated in a batch system. The equilibrium data were analyzed by Langmuir and Freundlich isotherm models. Results: The experimental data fit well with pseudo-second-order kinetic model (R2≥0.998) and conformed better to Langmuir isotherm model (R2≥0.997). The maximum adsorption capacity for Fe3O4/SG obtained from the Langmuir model was 11.1 mg/g. Evaluation of thermodynamic parameters proved that the adsorption process was normally feasible, spontaneous and exothermic. Conclusion: It can be concluded that the Fe3O4/SG can be considered as a cost-effective and environmental friendly adsorbent for the efficient removal of sulfur dyes present in aqueous solutions.
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نویسندگان مقاله ناصر توسلی | naser tavassoli
department of chemistry, faculty of science, university of guilan, rasht, iran

سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)

رضا انصاری | reza ansari
department of chemistry, faculty of science, university of guilan, rasht, iran

سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)

زهرا مصیب زاده | zahra mosayebzadeh
department of chemistry, faculty of science, university of guilan, rasht, iran

سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)

نشانی اینترنتی http://jhygiene.muq.ac.ir/browse.php?a_code=A-10-85-1&slc_lang=en&sid=en
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده 1
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