تعداد نشریات | 161 |
تعداد شمارهها | 6,468 |
تعداد مقالات | 69,896 |
تعداد مشاهده مقاله | 122,406,930 |
تعداد دریافت فایل اصل مقاله | 95,654,200 |
Optimization of Copper and Zinc ions removal from aqueous solution by modified Nano-bentonite using Response surface methodology | ||
Journal of Ultrafine Grained and Nanostructured Materials | ||
دوره 53، شماره 1، شهریور 2020، صفحه 78-90 اصل مقاله (3.15 M) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22059/jufgnsm.2020.01.10 | ||
نویسندگان | ||
Shahab Nasseri* 1؛ Ali Yaqubov2؛ Abdolali Alemi3؛ Ali Nuriev2 | ||
1Technical College of Ibn Sina Khalkhal, Technical and Vocayional University, Ardabil, Iran; Institute of Catalysis and Inorganic Chemistry named after acad. M. F. Nagiyev of Azerbaijan National Academy of Sciences, Baku, Azerbaijan; Department of Inorganic chemistry, Faculty of chemistry, University of Tabriz, Tabriz, Iran. | ||
2Institute of Catalysis and Inorganic Chemistry named after acad. M. F. Nagiyev of Azerbaijan National Academy of Sciences, Baku, Azerbaijan. | ||
3Department of Inorganic chemistry, Faculty of chemistry, University of Tabriz, Tabriz, Iran. | ||
چکیده | ||
In recent decades, the presence of heavy metal ions in wastewater has become an important public concern worldwide. Adsorption is a commonly used technique for removing various types of materials including metal ions from contaminated water sources. However, common methods for adsorption are not completely efficient at low ion concentrations; therefore, adsorbents should be improved in order to reach an acceptable level of adsorption efficiency. In this study, the removal of two heavy metals ions, zinc and copper, from synthetic aqueous solutionusing Nano-bentonite was investigated. Modified bentonite was obtained by calcination of bentonite at 600℃ for 2h. Response surface methodology (RSM) and central composite design (CCD) were used to optimize the operating factors of the adsorption process. Operation time, adsorbent dosage, ion concentration and pH were the variables and percentage of ion removal was considered as the response. HCl and NaOH were used as chemical agents to adjust pH at optimum level of operating condition for Cu2+ and Zn2+ removal which were as follows: Cu2+ initial concentration: 110.1 mg/L, pH:7.3, time: 96.8 min, adsorbent dosage: 2.1 g/l, and Zn2+ initial concentration: 105 mg/L, pH: 6.9, time: 73.1 min and adsorbent dosage: 2 g/l. Results and 3D plots exhibited significant proof for accepting the competence of the modified Nano-bentonite as an efficient adsorbent for metals ion removal. | ||
کلیدواژهها | ||
Response surface methodology؛ Heavy metal adsorption؛ Wastewater treatment؛ Nano bentonite | ||
مراجع | ||
2. Wada K. Selective Adsorption of Zinc on Halloysite. Clays and Clay Minerals. 1980;28(5):321-7.
38. Ahmadi S, Bazrafshan E, Kord Mostafapoor F. Treatment of landfill leachate using a combined Coagulation and modify bentonite adsorption processes. J Sci Eng Res. 2017;4(2):58-64. | ||
آمار تعداد مشاهده مقاله: 1,043 تعداد دریافت فایل اصل مقاله: 645 |