پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 154 |
| تعداد شماره‌ها | 5,822 |
| تعداد مقالات | 63,932 |
| تعداد مشاهده مقاله | 106,168,056 |
| تعداد دریافت فایل اصل مقاله | 83,076,280 |
حذف نیکل از محیط‌های آبی توسط کربن فعال به دست آمده از پسماند نفتی به روش فعال سازی فیزیکی با بخار آب | ||
| نشریه محیط زیست طبیعی | ||
| مقاله 7، دوره 72، شماره 3، مهر 1398، صفحه 365-377 اصل مقاله (1.36 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jne.2019.274676.1633 | ||
| نویسندگان | ||
| نیلوفر موجودی1؛ نوراله میرغفاری* 2؛ محسن سلیمانی3 | ||
| 1آلودگی محیط زیست، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، اصفهان، ایران. | ||
| 2دانشگاه صنعتی اصفهان | ||
| 3دانشگاه صنعتی اصفهان-گروه محیط زیست | ||
| چکیده | ||
| در این پژوهش، با استفاده از پسماند مخازن ذخیره نفت خام، جاذب های کربنی در دماهای مختلف با استفاده از بخار آب تهیه شد. پس از بررسی خصوصیات بافتی و سطح ویژه، یک جاذب بهینه برای ادامه آزمایشات انتخاب شد. آزمایش های ناپیوسته جذب نیکل با غلظت اولیهmg/L 200-25، pH 8-2، زمان ماند 240-5 دقیقه و دوز جاذب در گستره g/L 5-1 انجام شد. نتایج نشان داد از میان سه جاذب سنتز شده، جاذب به دست آمده در دمای C˚ 900، به ترتیب با داشتن مساحت سطح ویژه m2/g 422 و حجم کل منافذ m3/g 5/0 دارای بهترین خصوصیات سطحی و ساختاری می‌باشد. نتایج جذب نیکل نشان داد کارایی حذف با افزایش زمان تماس و دوز جاذب، افزایش می‌یابد. حداکثر کارایی جذب نیکل در pH برابر با 5 ، زمان تماس 60 دقیقه و میزان دوز جاذب g/L 2 به دست آمد. بعلاوه مشاهده گردید که داده‌های جذب از ایزوترم لانگمویر و فرندلیچ تبعیت می‌کند. نتایج برازش مدل‌های سینتیک بیانگر تبعیت فرایند جذب از مدل شبه مرتبه دوم است. بر مبنای نتایج حاصل از این مطالعه می‌توان اظهار نمود که کربن فعال تهیه شده از لجن نفتی می‌تواند به عنوان جاذبی کارآمد و مقرون به صرفه برای تصفیه پساب صنایع مورد توجه قرار گیرد. | ||
| کلیدواژه‌ها | ||
| جذب سطحی؛ سنیتیک؛ ایزوترم؛ نیکل؛ محلول آبی | ||
| عنوان مقاله [English] | ||
| Removal of Ni from aqueous solutions by activated carbon prepared from oily waste using physical activation method with steam | ||
| نویسندگان [English] | ||
| niloofar mojoudi1؛ Nourollah Mirghaffari2؛ Mohsen Soleimani3 | ||
| 1Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran | ||
| 3Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran | ||
| چکیده [English] | ||
| In this study, the carbonaceous adsorbents were prepared from the waste of crude oil storage tanks using with steam at various temperatures. The optimum adsorbent was selected for further experiments after characterization of specific surface area and textural properties. Batch experiments of nickel adsorption were performed with initial concentration of 25-200 mg/L, pH 2-8, contact time 5-240 min and absorbent dose of 1-5 g/L. The results showed that among the three synthesized absorbents, the obtained adsorbent at 900 ˚C showed the higher surface and best structural properties with a specific surface area of 422 m2/g and a total pore volume of 0.55 m3/g. The results of nickel adsorption showed that the removal efficiency increases with increasing the contact time and absorbent dose. Maximum nickel adsorption efficiency was obtained at pH 5, contact time of 60 min and absorbance dose of 2 g/L. In addition, it was observed that the adsorption data follow the Langmuir and Freundlich isotherms. The results of fitting the kinetic models for all adsorbents indicate that the adsorption process follow the pseudo second order kinetic model. Base on the results of this study, it can be stated that the activated carbon produced from oily sludge can be considered as an efficient and cost effective adsorbent for treatment of industrial wastewater. | ||
| کلیدواژه‌ها [English] | ||
| Adsorption, kinetic, Isotherm, nickel, aqueous solution | ||
| مراجع | ||
|
Altenor, S., Carene, B., Emmanuel, E., Lambert, J., Ehrhardt, J., Gaspard, S., 2009. Adsorption studies of methylene blue and phenol onto vetiver roots activated carbon prepared by chemical activation. Journal of Hazardous Materials 165, 1029-1039. Asim, N., Emdadi, Z., Mohammad, M., Yarmo, M.A., Sopian, K., 2015. Agricultural solid wastes for green desiccant applications: an overview of research achievements. Opportunities and perspectives. Journal of Cleaner Production 91, 26-35. ASTM. 2006. Standard test method for determination of iodine number of activated carbon, ASTM International D 4607-94. West Conshohocken. Bhattacharyya, K.G., Gupta, S., 2006. Adsorption of chromium (VI) from water by clays. Industrial & engineering chemistry research 45, 7232-7240. Choksi, P.M., Joshi, V.Y., 2007. Adsorption kinetic study for the removal of nickel (II) and aluminum (III) from an aqueous solution by natural adsorbents. Desalination 208, 216-231. Danmaliki, G.I., Saleh, T.A., 2017. Effects of bimetallic Ce/Fe nanoparticles on the desulfurization of thiophenes using activated carbon. Chemical Engineering Journal 307, 914- 927. Daud, W.M., Ahmad, A.W., Aroua, M.A., 2007. Carbon molecular sieves from palm shell: Effect of the benzene deposition times on gas separation properties. Separation and Purification Technology 57, 289-293. Demiral, H., Demiral, I., Karabacakoğlu, B., Tümsek, F., 2011. Production of activated carbon from olive bagasse by physical activation. Chemical Engineering Research and Design 89, 206-213. Dias, J.M., Alvim-Ferraz, M.C.M., Almeida, M.F., Rivera-Utrilla, J., Sánchez-Polo, M., 2007. Waste materials for activated carbon preparation and its use in aqueous-phase treatment: a review. Journal of Environmental Management 85, 833-846. Emam, E.A., 2013. Modified activated carbon and bentonite used to adsorb petroleum hydrocarbons emulsified in aqueous solution. American Journal of Environmental Protection 2, 161-169. Gaspard, S., Ncibi, M.C., 2013. Biomass for Sustainable Applications: Pollution Remediation and Energy, RSC Publishing, Green Chemistry Series, Cambridge, UK, pp. 430. Ghasemi, N., Ghasemi, M. Alwi W., Rafidah, Sh. Manan, A., 2013. Removal of nickel (II) from aqueous solution by activated carbon prepared from Askari grape dust. Proceedings of the 6th International Conference on Process Systems Engineering (PSE ASIA), Kuala Lumpur. Hernandez, J.R., Aquino, F.L., Capareda, S.C., 2007. Activated carbon production from pyrolysis and steam activation of cotton gin trash. American Society of Agricultural and Biological Engineers, Annual International Meeting Sponsored by ASABE, Minneapolis, Minnesota. Jeyakumar, R.S., V. Chandrasekaran, 2014. Adsorption of lead (II) ions by activated carbons prepared from marine green algae: equilibrium and kinetics studies. International Journal of Industrial Chemistry 5, 2. Liu, J., Jiang, X., Zhou, L., Han, X., Cui, Z., 2009. Pyrolysis treatment of oil sludge and model-free kinetics analysis. Journal of hazardous materials 161, 1208-1215. Mohammadi, S., N. Mirghaffari, 2015. A preliminary study of the preparation of porous carbon from oil sludge for water treatment by simple pyrolysis or KOH activation. New Carbon Materials 30, 310-318. Muniandy, L., Adam, F., Mohamed, A.R., Ng. E.P., 2014. The synthesis and characterization of high purity mixed microporous/mesoporous activated carbon from rice husk using chemical activation with NaOH and KOH. Microporous and Mesoporous Materials 197, 316-323. Navarro, A.E., Cuizano, N.A., Lazo, J.C., Sun-Kou, M.R., Llanos, B.P., 2009. Comparative study of the removal of phenolic compounds by biological and non-biological adsorbents. Journal of hazardous materials 164, 1439-1446. Ossman, M.E., Mansour, M.S., 2013. Removal of Cd (II) ion from wastewater by adsorption onto treated old newspaper: kinetic modeling and isotherm studies. journal of indian chemical society 4, 13. Rezaee, A., Godini, H., Dehestani, S., Khavanin, A., 2008. Application of impregnated almond shell activated carbon by zinc and zinc sulfate for nitrate removal from water. Journal of Environmental Health Science & Engineering 5, 125-130. Sun, D., Zhang, X., Wu, Y., Liu, X., 2010. Adsorption of anionic dyes from aqueous solution on fly ash. Journal of hazardous materials 181, 335-342. Wang, Z., Nie, E., Li, J., Yang, M., Zhao, Y., Luo, X., Zheng, Z., 2012. Equilibrium and kinetics of adsorption of phosphate onto iron-doped activated carbon. Environmental Science and Pollution Research 19, 2908–2917. Yu, Q., Li, M., Ji, X., Qiu, Y., Zhu, Y., Leng, C., 2016. Characterization and methanol adsorption of walnut-shell activated carbon prepared by KOH activation. Journal of Wuhan University of Technology- Materials Science Edition. 31, 260- 268. Zazouli, M. A., Yazdani, J., Balarak, D., Ebrahimi, M., Mahdavi, Y., 2013. Removal Acid Blue 113 from Aqueous Solution by Canola. Journal of mazandaran university of medical science 23, 73-81. Zhao, Y., Wang, J., Luan, Z., Peng, X., Liang, Z., Shi, L., 2009. Removal of phosphate from aqueous solution by red mud using a factorial design. Journal of Hazardous Materials 165, 1193-1199. | ||
|
آمار تعداد مشاهده مقاله: 1,539 تعداد دریافت فایل اصل مقاله: 358 |
||