ارزیابی کارایی بتن متخلخل ساخته شده از کربن فعال ضایعاتی در حذف آلاینده های روانابهای سطحی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی عمران، دانشکده فنی، دانشگاه گیلان، رشت، ایران، صندوق پستی: 3756

2 گروه مهندسی عمران، دانشکده فنی، دانشگاه گیلان، رشت، ایران

3 گروه مهندسی عمران، دانشکده فنی، دانشگاه گیلان، رشت، ایران.

10.22124/jcr.2023.25675.1630

چکیده

در پژوهش حاضر از کربن فعال تهیه‌شده از ضایعات کارخانه چای سازی به ‌عنوان جاذب آلاینده‌های رواناب های سطحی در بتن متخلخل استفاده‌شده است. این کربن فعال طی دو مرحله‌ی کربونیزاسیون (پیرولیز) و فعال‌سازی در دمای بالا تولید شده است. جهت دسترسی به نتایج مطلوب و بهینه از روش سطح پاسخRSM و نرم افزار Design Expert استفاده شده است. همچنین در کنار ارزیابی قابلیت حذف آلاینده‌ها از رواناب توسط بتن متخلخل ، بهبود مشخصات مکانیکی این نوع از بتن با اضافه کردن کربن فعال، میکروسیلیس، تغییرات در نسبت آب به سیمان و مقدار ریز دانه مورد تحلیل قرار گرفته است. با توجه به نتایج آزمایش ها، مدلهای ارائه شده برای تخمین مقاومت فشاری 28 روزه با ضریب همبستگی 0.97، مقاومت فشاری 7 روزه با ضریب همبستگی 0.84، مقاومت فشاری 42 روزه با ضریب همبستگی 0.95، COD با ضریب همبستگی 0.94، TSS با ضریب همبستگی 0.93، TDS با ضریب همبستگی 0.91 و حذف فلز سنگین مس با ضریب همبستگی 0.94 بدست آمدندکه نشان دهنده معنا دار بودن طراحی آزمایش انجام گرفته می باشند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Evaluation of porous concrete containing waste-originated activated carbon in the removal of surface runoff pollutants

نویسندگان [English]

  • Payam Zanganeh Ranjbar 1
  • Morteza Sohrabi Guilani 2
  • Amin Salehi 3
  • Mostafa Ghasemi Laskoukalayeh 3
1 Civil Engineering Department, Faculty of Engineering, Guilan University, Rasht, Iran
2 Civil Engineering Department, Faculty of Engineering, Guilan university, Rasht, Iran
3 Civil Engineering Department, Faculty of Engineering, Guilan University, Rasht, Iran.
چکیده [English]

In this paper, activated carbon prepared from agricultural waste has been used as pollutants absorbent in porous concrete. This activated carbon is produced during two stages of carbonization (pyrolysis) and activation at high temperature. In order to reach the desired and optimal results, the response surface method (RSM) has been used. while evaluating the ability to remove pollutants from runoff water, it has been trying to improve the mechanical characteristics of this type of concrete by adding activated carbon, micro silica, water to cement ratio changes and the amount of fine grains. Design-Expert software was used to design the experiment using the Box-Behnken method. To use the Box-Behnken method, 4 input variables were defined including active carbon percentage (1% to 2.5%), water-cement ratio (0.3 to 0.4%), micro silica percentage (5% to 10%) and fine grain percentage (0 to 10%), which provided 27 mixing plans. Results showed that the presented models for estimating 28-day compressive strength are correlated with R² value of 0.97, 7-day compressive strength with R² value of 0.84, 42-day compressive strength with R² value of 0.95, COD with R² value of 0.94, TSS with R² value of 0.93 , TDS with R² value of 0.91 and copper heavy metal removal with R² value of 0.94, which indicate the significance of the test design as well as the improvement of the mechanical characteristics and removal of pollutants in porous concrete containing waste activated carbon.

کلیدواژه‌ها [English]

  • Porous concrete
  • Activated carbon
  • Response surface method
  • Runoff pollution

مراجع

[1] Organization, W.H., Facts and figures: Water, sanitation and hygiene links to health. Geneva: WHO, 2004.
[2] Müller, A., et al., The pollution conveyed by urban runoff: A review of sources. Science of the Total Environment, 2020. 709: p. 136125. https://doi.org/10.1016/j.scitotenv.2019.136125.
[3]Kim, J.-Y. and J.J. Sansalone, Event-based size distributions of particulate matter transported during urban rainfall-runoff  events. Water research, 2008. 42(10-11): p. 2756-2768. https://doi.org/10.1016/j.watres.2008.02.005
[4] Sánchez-Mendieta, C., J.J. Galán, and I. Martinez-Lage, Physical and Hydraulic Properties of Porous Concrete. Sustainability, 2021. 13(19): p. 10562. https://doi.org/10.3390/su131910562
[5] Tennis, P.D., Leming, M.L. and Akers, D.J. (2004) Pervious Concrete Pavements. Technical Report, EB30202. Portland Cement Association, Skokie, and National Ready Mixed Concrete Associated, Silver Spring.
[6] Moretti, L., P. Di Mascio, and C. Fusco, Porous concrete for pedestrian pavements. Water, 2019. 11(10): p. 2105. https://doi.org/10.3390/w11102105
[7] Moretti, L. and G. Loprencipe, Climate change and transport infrastructures: State of the art. Sustainability, 2018. 10(11): p. 4098. https://doi.org/10.3390/su10114098
[8] Mohammadi, EL., Najafi, EK., Ranjbar, PZ., Payan, M., Chenari, RJ. and Fatahi, B., Recycling industrial alkaline solutions for soil stabilization by low-concentrated fly ash-based alkali cements, Construction and Building Materials, 2023,393:132083. https://doi.org/10.1016/j.conbuildmat.2023.132083
[9] Hosseinjani, MH., Ranjbar, PZ., Lashteh Neshaei, MA., Ranjbar, MM. and Nassiraei, H., Investigation of Alkaline Reaction of Dredged Caspian Sea Marine Sand to Make Concrete in Marine Environment and Ports,Concrete Research, 2022, 15(1), pp.5-22. https://doi.org/10.22124/JCR.2021.20990.1530
[10] Ranjbar, PZ., Talebi, H., Mousazadeh, R. and Ghorbani, M., Investigating the synergistic effect of using cement, polymer slurry, and recycled tire fibers in improving the mechanical and geotechnical properties of dune sand,Concrete Research, 2022, 15(3):31-33. https://doi.org/10.22124/JCR.2022.19642.1500
[11] Bansal, R.C. and M. Goyal, Activated carbon adsorption. 2005: CRC press. https://doi.org/10.1201/9781420028812
[12] Hu, X., Dai, K., & Pan, P. , Investigati on of engineering properties and filtration characteristics of porous asphalt concrete containing activated carbon. Journal of Cleaner Production, 2019, 209, 1484-1493. https://doi.org/10.1016/j.jclepro.2018.11.115
[13] Justo-Reinoso, I., Srubar III, W. V., Caicedo-Ramirez, A., & Hernandez, M. T. (2018). Fine aggregate substitution by granular activated carbon can improve physical and mechanical properties of cement mortars. Construction and Building Materials, 164, 750-759. https://doi.org/10.1016/j.conbuildmat.2017.12.181
[14] Moses, M. T., Thomas, L. B., Scaria, J., & Dev, G. V. (2019). Prospective benefits of using activated carbon in cement composites-An overview. Technology, 10(04),946-953. https://doi.org/10.34218/IJARET.10.3.2019.027
[15] Justo-Reinoso, I., Caicedo-Ramirez, A., Srubar III, W. V., & Hernandez, M. T. (2019). Fine aggregate substitution with acidified granular activated carbon influences fresh-state and mechanical properties of ordinary Portland cement mortars. Construction and Building Materials, 207, 59-69. https://doi.org/10.1016/j.conbuildmat.2019.02.063
[16] Cui, J., et al., A green route for preparation of low surface area SiO 2 microspheres from wheat straw ash with activated carbon and NPK compound fertilizer as by-products. RSC advances, 2015. 5(98): p. 80238-80244. https://doi.org/10.1039/c5ra14622d
[17] Valentín-Reyes, J., et al., Adsorption mechanisms of hexavalent chromium from aqueous solutions on modified activated carbons. Journal of environmental management, 2019. 236: p. 815-822. https://doi.org/10.1016/j.jenvman.2019.02.014
[18] Bezerra, M.A., et al., Response surface methodology (RSM) as a tool for optimization in analytical chemistry. Talanta, 2008. 76(5): p. 965-977. https://doi.org/10.1016/j.talanta.2008.05.019
[19] Esfahanian, M., Nikzad, M., Najafpour, G., Choreyshi, A.A., 2013. Modeling and optimization of ethanol fermentation using saccharomyces cerevisiae: response surface methodology and artificial neural network. Chem. Ind. Chem. Eng. 19 (2), 241–252. https://doi.org/10.2298/CICEQ120210058E
[20] Liu Y, Zheng Y, Wang A. Response Surface Methodology for Optimizing Adsorption Process Parameters for Methylene Blue Removal by a Hydrogel Composite. Adsorption Science & Technology.2010 ;28(10):913-922. https://doi.org/10.1260/0263-6174.28.10.913
[21] Daneshi, A., Younesi, H., Ghasempouri, S.M., Sharifzadeh, M., 2010. Production of poly‐3‐hydroxybutyrate by Cupriavidus necator from  corn syrup: statistical modeling and optimization of biomass yield and volumetric productivity. J. Chem. Technol. Biotechnol. 85, 1528–1539.  https://doi.org/10.1002/jctb.2463
[22] ACI Committee 522. 2006. Pervious Concrete, ACI 522R-06 Report.
[23] ASTM C642, A., Standard test method for density, absorption, and voids in hardened concrete. ASTM, ASTM International, 2013.
[24] ASTM C1760-12, Standard Test Method for Bulk Electrical Conductivity of Hardened Concrete (Withdrawn 2021), ASTM International, West Conshohocken, PA, 2012.

فایل ها

هم رسانی

ارجاع به این مقاله

آمار