پیوندهای مفید
آمار
| تعداد نشریات | 22 |
| تعداد شمارهها | 705 |
| تعداد مقالات | 10,146 |
| تعداد مشاهده مقاله | 71,451,118 |
| تعداد دریافت فایل اصل مقاله | 63,174,121 |
Determining Effective Parameters on Hydrodynamic Characteristics of Pulsed Packed Column Using ANOVA Method: Determining Optimum Conditions with Maximum Extraction Efficiency | ||
| Journal of Heat and Mass Transfer Research | ||
| دوره 8، شماره 2 - شماره پیاپی 16، بهمن 2021، صفحه 267-281 اصل مقاله (2.47 M) | ||
| نوع مقاله: Full Length Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/jhmtr.2021.23601.1347 | ||
| نویسندگان | ||
| Mohammad Ghazvehi1؛ Masoud Nasiri* 1؛ Mohammad Hasan Mallah2؛ Jaber Safdari2 | ||
| 1Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan | ||
| 2Material and Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Tehran, Iran | ||
| تاریخ دریافت: 16 خرداد 1400، تاریخ بازنگری: 12 مهر 1400، تاریخ پذیرش: 18 مهر 1400 | ||
| چکیده | ||
| Using nanoparticles can lead to an increase in mass transfer rate in liquid–liquid extraction systems. Increasing the concentration of nanoparticles in liquids results in the deposition of nanoparticles and thus limits its use in extraction systems. In this paper, the effect of adding a surfactant to nanoparticle in liquid-liquid extraction systems on extraction efficiency is investigated. The effect of surfactant concentration on the extraction efficiency has been investigated both separately and in the presence of nanoparticles. In this research, the effect of continuous and dispersed phase velocity, and pulsation intensity on the hydrodynamic characteristics of the system has been investigated for the first time with the simultaneous use of silica nanoparticles and SDS surfactant in the vertical pulsed packed column. Using hydrodynamic system and in the presence of nanoparticles and surfactant, this research article provides optimum conditions to obtain maximum efficiency with minimum additives and pulsation intensity. ANOVA analysis (three-level Box–Behnken experimental design) has been used to investigate the effective parameters and sensitivity analysis. The results showed that pulsation intensity is the most effective factor on response. With increasing pulsation intensity from 1 to 2.5, the droplet size decreases and hold-up is increased from 0.02 to 0.05 (at Qd=Qc= 2 lit/s) in the system. Also, the effects of adding SiO2 nanoparticles and Sodium dodecyl sulfate (SDS) surfactant into a chemical system on the hydrodynamic characteristics were studied. The results showed that by adding nanoparticles the droplet size decreases while hold-up increases. Finally, a semi-empirical correlation has been proposed to predict the droplet size in terms of operational parameters, the system chemical properties and the nanoparticle volume fraction. It was found that when pulsation intensity, nanoparticle concentration and surfactant concentration were 1.75, 0.1, and 0.05, respectively, extraction efficiency increased to 0.98. | ||
| کلیدواژهها | ||
| Nanoparticle؛ surfactant؛ Pulsed packed column؛ Mass transfer coefficient؛ Hold-up؛ Liquid-liquid extraction | ||
| عنوان مقاله [English] | ||
| تعیین پارامترهای موثر بر مشخصه های هیدرودینامیکی ستون ضربه ای پر شده با استفاده از روش تحلیل ANOVA : تعیین شرایط بهینه با بالا ترین بازده جداسازی | ||
| چکیده [English] | ||
| استفاده از نانوذرات میتواند میزان انتقال جرم در سیستم های جداسازی مایع -مایع را افزایش دهد. افزایش غلظت نانوذرات در مایعات سبب از هم گسیختگی نانوذرات گردیده و در نتیجه استفاده از این سیستم های جداسازی را محدود میسازد. در این مقاله تاثیر اضافه نمودن سورفکتانت و نانو ذرات بر ضریب جداسازی در سیستم های جداسازی مایع - مایع بررسی گردید. تاثیر غلظت سورفکتانت نیز بر ضریب جداسازی به طور جداگانه با حضور و بدون حضور نانوذرات بررسی گردید. در این تحقیق همچنین تاثیر شدت جریان فاز مداوم و پخش شده و شدت ضربه روی مشخصه های هیدرو دینامیکی سیستم با استفاده همزمان از نانو ذرات سیلیکا و سورفکتانت SDS در یک ستون پرشده عمودی برای اولین بار مورد بررسی قرار گرفت. این مقاله با استفاده از سیستم هیدرودینامیکی و با حضور نانو ذرات و سورفکتانت، شرایط بهینه ای را برای دستیابی به بالاترین راندمان با حداقل افزودنی ها و شدت ضربه فراهم میکند. از آنالیز ANOVA (طراحی آزمایش سه سطحی Box-Behnken) جهت بررسی اثر پارامترها و تحلیل حساسیت استفاده گردید. نتایج نشان داد که شدت ضربه مهمترین پارامتر موثر بر پاسخ می باشد. با افزایش شدت ضربه از ۱ تا 5/2، سایز قطره کاهش یافته و هلد آپ از 02/0تا 05/0 (در (Qd=Qc=2 lit/s در سیستم افزایش می یابد. همچنین اثر اضافه نمودن نانوذرات SiO2 و سورفکتانت SDS به سیستم شیمیایی بر روی پارامترهای هیدرودینامیکی مطالعه گردید . نتایج نشان داد که با اضافه نمودن نانوذرات اندازه ذرات کاهش می یابد در حالی که هلد آپ افزایش می یابد. در پایان یک رابطه نیمه تجربی برای پیش بینی اندازه قطره بر حسب پارامترهای عملیاتی و خواص شیمیایی سیستم و کسر حجمی نانوذرات ارائه گردید . این رابطه مشخص میکند زمانی که شدت ضربه ، غلظت نانوذره و غلظت سورفکتانت به ترتیب برابر با 75/1 و 1/0 و 05/0 باشند، بازده استخراج تا 98/0 افزایش مییابد . | ||
| کلیدواژهها [English] | ||
| نانوذره, ماده فعال سطحی, ستون ضربهای پر شده, ضریب انتقال جرم, هلدآپ, استخراج مایع-مایع | ||
| مراجع | ||
|
[1] Ahuja, A.S., 1975. Augmentation of heat transport in laminar flow of polystyrene suspensions. I. Experiments and results. Journal of Applied Physics, 46(8), pp.3408-3416.
[2] Hamilton, R.L. and Crosser, O.K., 1962. Thermal conductivity of heterogeneous two-component systems. Industrial & Engineering Chemistry Fundamentals, 1(3), pp.187-191.
[3] Happel, J., 1958. Viscous flow in multiparticle systems: slow motion of fluids relative to beds of spherical particles. AIChE Journal, 4(2), pp.197-201.
[4] Maxwell, J.C., 1954. A Treatise on Electricity and Magnetism, vol. 1 (Vol. 1). Dover Books on Physics.
[5] Feng, W., Wen, J., Fan, J., Yuan, Q., Jia, X. and Sun, Y., 2005. Local hydrodynamics of gas–liquid-nanoparticles three-phase fluidization. Chemical Engineering Science, 60(24), pp.6887-6898.
[6] Olle, B., Bucak, S., Holmes, T.C., Bromberg, L., Hatton, T.A. and Wang, D.I., 2006. Enhancement of oxygen mass transfer using functionalized magnetic nanoparticles. Industrial & Engineering Chemistry Research, 45(12), pp.4355-4363.
[7] Wen, J.P., Jia, X.Q. and Feng, W., 2005. Hydrodynamic and Mass Transfer of Gas‐Liquid‐Solid Three‐Phase Internal Loop Airlift Reactors with Nanometer Solid Particles. Chemical Engineering & Technology: Industrial Chemistry‐Plant Equipment‐Process Engineering‐Biotechnology, 28(1), pp.53-60.
[8] Krishnamurthy, S., Bhattacharya, P., Phelan, P.E. and Prasher, R.S., 2006. Enhanced mass transport in nanofluids. Nano Letters, 6(3), pp.419-423.
[9] Ashrafmansouri, S.S. and Esfahany, M.N., 2015. The influence of silica nanoparticles on hydrodynamics and mass transfer in spray liquid–liquid extraction column. Separation and Purification Technology, 151, pp.74-81.
[10] Bahmanyar, A., Khoobi, N., Moharrer, M.M.A. and Bahmanyar, H., 2014. Mass transfer from nanofluid drops in a pulsed liquid–liquid extraction column. Chemical Engineering Research and Design, 92(11), pp.2313-2323.
[11] Raei, B., 2021. Statistical analysis of nanofluid heat transfer in a heat exchanger using Taguchi method. Journal of Heat and Mass Transfer Research, 8(1), pp.29-38.
[12] Mollamahdi, M., Abbaszadeh, M. and Sheikhzadeh, G.A., 2016. Flow field and heat transfer in a channel with a permeable wall filled with Al2O3-Cu/water micropolar hybrid nanofluid, effects of chemical reaction and magnetic field. Journal of Heat and Mass Transfer Research, 3(2), pp.101-114.
[13] Barik, A.K. and Nayak, B., 2017. Fluid flow and heat transfer characteristics in a curved rectangular duct using Al2O3-water nanofluid. Journal of Heat and Mass Transfer Research, 4(2), pp.103-115.
[14] Goodarzi, H.H. and Esfahany, M.N., 2016. Experimental investigation of the effects of the hydrophilic silica nanoparticles on mass transfer and hydrodynamics of single drop extraction. Separation and Purification Technology, 170, pp.130-137.
[15] Lee, J.K., Koo, J., Hong, H. and Kang, Y.T., 2010. The effects of nanoparticles on absorption heat and mass transfer performance in NH3/H2O binary nanofluids. International Journal of Refrigeration, 33(2), pp.269-275.
[16] Bahmanyar, A., Khoobi, N., Mozdianfard, M.R. and Bahmanyar, H., 2011. The influence of nanoparticles on hydrodynamic characteristics and mass transfer performance in a pulsed liquid–liquid extraction column. Chemical Engineering and Processing: Process Intensification, 50(11-12), pp.1198-1206.
[17] Jang, S.P. and Choi, S.U., 2004. Role of Brownian motion in the enhanced thermal conductivity of nanofluids. Applied Physics Letters, 84(21), pp.4316-4318.
[18] Nagy, E., Feczkó, T. and Koroknai, B., 2007. Enhancement of oxygen mass transfer rate in the presence of nanosized particles. Chemical Engineering Science, 62(24), pp.7391-7398.
[19] Tajik, M., Dehghan, M. and Zamzamian, A., 2015. Analysis of variance of nanofluid heat transfer data for forced convection in horizontal spirally coiled tubes. Journal of Heat and Mass Transfer Research, 2(2), pp.45-50.
[20] Khoobi, N., Bahmanyar, A., Molavi, H., Bastani, D., Mozdianfard, M.R. and Bahmanyar, H., 2013. Study of droplet behaviour along a pulsed liquid–liquid extraction column in the presence of nanoparticles. The Canadian Journal of Chemical Engineering, 91(3), pp.506-515.
[21] Mirzazadeh Ghanadi, A., Heydari Nasab, A., Bastani, D. and Seife Kordi, A.A., 2015. The effect of nanoparticles on the mass transfer in liquid–liquid extraction. Chemical Engineering Communications, 202(5), pp.600-605.
[22] Nematbakhsh, G. and Rahbar-Kelishami, A., 2015. The effect of size and concentration of nanoparticles on the mass transfer coefficients in irregular packed liquid–liquid extraction columns. Chemical Engineering Communications, 202(11), pp.1493-1501.
[23] Roozbahani, M.A.G., Najafabadi, M.S., Abadi, K.N.H. and Bahmanyar, H., 2015. Simultaneous investigation of the effect of nanoparticles and mass transfer direction on static and dynamic holdup in pulsed-sieve liquid–liquid extraction columns. Chemical Engineering Communications, 202(11), pp.1468-1477.
[24] Saien, J. and Bamdadi, H., 2012. Mass transfer from nanofluid single drops in liquid–liquid extraction process. Industrial & Engineering Chemistry Research, 51(14), pp.5157-5166.
[25] Saien, J., Bamdadi, H. and Daliri, S., 2015. Liquid–liquid extraction intensification with magnetite nanofluid single drops under oscillating magnetic field. Journal of Industrial and Engineering Chemistry, 21, pp.1152-1159.
[26] Schmidt, S.A., Simon, M., Attarakih, M.M., Lagar, L. and Bart, H.J., 2006. Droplet population balance modelling—hydrodynamics and mass transfer. Chemical Engineering Science, 61(1), pp.246-256.
[27] Molavi, H., Amanabadi, M., Hosseinpoor, S., Bahmanyar, H. and Shariaty-Niasar, M., 2010. A study on local static hold-up in a rotary disc contactor liquid-liquid extraction column; Part I: single drop experiments. Australian Journal of Basic and Applied Sciences, 4, pp.5191-5198.
[28] Narender, G., Sreedhar Sarma, G. and Govardhan, K., 2019. Heat and mass transfer of nanofluid over a linear stretching surface with Viscous dissipation effect. Journal of Heat and Mass Transfer Research, 6(2), pp.117-124.
[29] Misek, T., 1985. Standard test systems for liquid extraction studies. EFCE Publication, Series 46.
[30] Pratt, H.R.C. and Stevens, G.W., 1992. Selection, design, pilot-testing and scale-up of extraction equipment. Science and Practice of Liquid-Liquid Extraction, Edited by JD Thornton, pp.492-589. | ||
|
آمار تعداد مشاهده مقاله: 676 تعداد دریافت فایل اصل مقاله: 568 |
||