حذف فنل و رنگ از لیکور سیاه فرایند خمیر کاغذ سازی به‌روش الکتروکواگولاسیون

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد صنایع چوب و کاغذ، دانشگاه تربیت مدرس، تهران

2 استادیار گروه علوم وصنایع چوب و کاغذ، دانشگاه تربیت مدرس، تهران

3 استادیار گروه شیمی، دانشگاه پیام نور، مرکز ساری

چکیده

در کشور ایران منابع لیگنوسلولزی غیر چوبی زیادی از قبیل کاه گندم، کاه برنج و دیگر محصولات زراعی با قابلیت مناسب برای تولید خمیر کاغذ وجود دارد. اصلی‌ترین عامل بازدارنده استفاده از آنها، وجود لیکور سیاه حاصل از فرایند خمیرسازی است که به‌دلیل انحلال لیگنین از ماده لیگنوسلولزی، حاوی مقادیر فراوانی رنگ و ترکیبات فنلی است. هدف از این مطالعه، بررسی قابلیت حذف فنل و رنگ به‌عنوان مهم‌ترین آلاینده آلی لیکور سیاه حاصل از فرایند خمیرسازی کاه گندم به‌روش الکتروکواگولاسیون بود. در این مطالعه از الکترودهای آلومینیوم با اعمال پتانسیل 16 ولت و شدت جریان 1700 میلی‌آمپر استفاده شد. تأثیر زمان‌های مختلف الکترولیز (10، 25، 40، 55 و 70 دقیقه) و pH (3، 5، 7، 9 و 5/10) بر روی لیکور سیاه مورد بررسی قرار گرفت. نتایج نشان داد که بیشترین میزان حذف در pH اولیه 5 حاصل شد که منجر به کاهش 78 درصد فنل کل و 98 درصد رنگ لیکور سیاه در مدت زمان 70 دقیقه گردید. روش الکتروکواگولاسیون به‌دلیل ساده و مؤثر بودن و هزینه سرمایه‌گذاری پایین آن در مقایسه با دیگر تکنولوژی‌‌های تصفیه لیکور سیاه می‌تواند مورد استفاده قرار گیرد.

کلیدواژه‌ها


عنوان مقاله [English]

Elimination of Phenol and Color from Pulping Black Liquor Using Electrocoagulation Process

نویسندگان [English]

  • Nahid Rastegarfar 1
  • Rabi Behrouz 2
  • Nader Bahramifar 3
چکیده [English]

There are many non-wood lignocelluloses resources such as wheat, rice straw and other agriculture by- products with appropriate feature for pulp production in Iran. The most major deterrent to their use is presence of pulping black liquor that due to lignin of lignocelluloses solution contains significant amounts of color and phenol compounds. The aim of this paper was investigation of the ability to remove phenol and color as the most important organic pollutants from back liquor of agri-based pulping process using electrocoagulation method. In the electrocoagulation process aluminium electrode was used and cell potential and current intensity were adjusted on 16 V and 1700 mA respectively. The effect of various treatment time (10, 25, 40, 55, 70 min) and initial pH (3, 5, 7, 9, 10/5) of black liquor were investigated.The results showed that maximum of decrease obtained at pH 5 that has led to a remove capacity 78% of phenol and 98% of color in treatment time 70 min. electrocoagulation method can be used for black liquor treatment because of simple, effective and its low investment cost compared to other technologies.

کلیدواژه‌ها [English]

  • Black Liquor
  • Electrocoagulation
  • Aluminum Electrode
  • Phenol
  • Color
1- Kreetachat, T., Damrongsri, M., Punsuwon, V., Vaithanomsat, P., Chiemchaisri, C., and Chomsurin, C. (2006). “Effects of ozonation process on lignin-derived compounds in pulp and paper Mill Effluents.” J. Biochemica Engineering, 35, 365-370.

2- Adhoum, N., and Monser, L. (2004). “Decolourization and removal of phenolic compounds from olive mill wastewater by electrocoaqulation.” J. Chemical Engineering Process, 43, 1281-1287.

3- Tantemsapya, N., Wirojanagud, W., and Sakolchai, S. (2004). “Removal of color, COD and lignin of pulp and paper wastewater using wood ash.” J. Science Technology, 26, 1-12.

4- Dafinov, A., Font, J., and Garcia-Valls, R. (2005). “Processing of black liquors by UF/NF ceramic membranes.” J. Desalination, 173, 83-90.

5- Ghatak, H.R., Kumar, S., and Kundu, P.P. (2002). “Electrode processes in black liquor electrolysis and their significance for hydrogen production.” J. Chemical Technology, 33, 2904-2911.

6- Guolin, H., Jeffrey, X. Sh., and Langrish, T.A.G. (2007). “A new pulping process for wheat straw to reduce problems with the discharge of black liquor.” J. Bio Resource Technology, 98, 2829-2835.

7- Srivastava, V.C., Mall, D.I., and Mishra, M.I. (2005). “Treatment of pulp and paper mill wastewaters with polyaluminium chloride and bagasse fly Ash.” J. Colloids and Surfaces, 260, 17-28.

8- Soloman, P.A., Ahmed Basha, C., Velan, M., Balasubr Amanian, N., and Marimuthu, P. (2009). “Augmentation of biodegradability of pulp and paper industry wastewater by electrochemical pre-treatment and optimization by RSM.” J. Separation and Purification Technology, 69, 109-117.

9- Qinglin, Z., and Chuang, K.T. (2001). “Adsorption of organic pollutants from effluents of a kraft pulp mill on activated carbon and polymer resin.” Advances in Environmental Research, 3, 251-258.

10- Fuying, M., Zeheng, X., Yubin, Z., Xiaochen, Y., and Xiaoyu, Z. (2008). “Repeated batch process for biological treatment of black liquorusing brown-rot basidiomycete fomitopsis sp. IMER2.” Microbiol Biotechnol., 24, 2627-2632.

11- Ghoreishi, S.M., and Haghighi, M.R. (2007). “Chromophores removal in pulp and paper mill effluent via hydrogenation-biological batch reactors.” J. Chemical Engineering, 127, 59-70.

12- Kalyani, P.K.S., Balasubramanian, N., and Srinivasakannan, C. (2003). “Decolorization and COD reduction of paper industrial effluent using electro-coagulation.” J. Chemical Engineering, 151, 97-104.

13- Zaied, M., and Bellakhal, N. (2008). “Electrocoagulation treatment of black liquor from paper industry.” J. Hazardous Material, 163, 995-1000.

14- Mollah, M.Y.A., Pathak, S.R., Patil, P.K., Vayuvegula, M., Agrawal, T.S., Gomes J.A.G., Kesmez, M., and Cocke, D.L. (2004). “Treatment of orange II azo-dye by electrocoagulation (EC) technique in continuous flow cell using sacrificialiron electrodes.” J. Hazardous Material, 109, 165-171.

15- Chen, G.H. (2004). “Electrochemical technologies in wastewater treatment.” J. Separation and Purification Technology, 38, 11-41.

16- Kuramitz, H., Nakata, Y., Kawasaki, M., and Tanaka, S. (2009). “Electrochemical oxidation of bisphenol A. application to the removal of bisphenol a using a carbon fiber electrode.” J. Chemosphere, 45, 37-43.

17- Chen, J.S., and Do, M.L. (1994). “Decolorization of dye-containing solutions by electrocoagulation.” J. Application Electrochemical, 24, 785-790.

18- Feng, C., Sugiura, N., and Shimada, S. (2003). “Development of a high performance electrochemical wastewater treatment system.” J. of Hazardous Materials, 103, 65-78.

19- Hector, A., Moreno-Casillas, D., Cocke, A., Jewel, A.G., Gomes, P., Morkovsky, B. J.R., Parga C., and Eric, P. (2007). “Electrocoagulation mechanism for COD removal.” J. Separation and Purification Technology, 56, 204-211.

20- Rahmani, A.R., and Samarghandi, M.R. (2008). “Electrocoagulation treatment of color solution containing colored index eriochrome black T.” J. Water and Wastewater, 64, 9-15. (In Persian)

21- Hemat Abadi, H. (2010). “Pollution control of a paper recycling mill effluent by electrochemical technique.” M.Sc. Thesis, Tarbiat Modares University, Tehran. (In Persian)

22- Ugurlu, M., Gurses, A., Dogar, C., and Yalcın, M. (2007). “The removal of lignin and phenol from paper mill effluents by electrocoagulation.” J. Environmental Management, 87, 420-428.

23- Mahesh, S., Prasad, B., Mall, I. D., and Mishra, I.M. (2006). Electrochemical degradation of pulp and paper mill wastewater. Part1. COD and color removal.” J. Industrial and Engineering Chemistry, 45, 2830-2839.

24- Donini, J.L., Kan, J.A., and Kar, K.L. (1997). “The operating cost of electrocoagulation.” Chemical Engineering, 2, 1000-1007.

25- APHA (1997). Standard methods for examination of water and wastewater, 18th Ed., Amrican Public Health Assocation, Washington D.C.

26- Zhu, J., Zhao, H., and Ni, J. (2007). “Fluoride distribution in electrocoagulation defluoridation process.” J. Separation and Purification Technology, 56, 184-191.

27- Rajeshwar, K., and Ibanez, J. (1997). Environmental electrochemistry, Academic Press, Australia.

28- Abdelwahaba, O., Aminb, N.K., and El-Ashtoukhyb, E-S.Z. (2009). “Electrochemical removal of phenol from oil refinery wastewater, J. Hazardous Material, 163, 711-716.

29- Jafarzadeh, N., and Daneshvar, N. (2006). “Treatment of textile wastewater containing basic dyes by electrocoagulation process.” J. Water and Wastewater, 57, 22-29. (In Persian)

30- Kobya, M., Can, O. T., and Bayramoglu, M. (2003). “Treatment of textile wastewaters by electrocoagulation using iron and aluminium electrodes.” J. Hazardous Material, 100, 163-178.

31-Holt, P.H., Barton, G.W., Wark, M., and Mitchell, A.A. (2002). “A quantitative comparison between chemical dosing and electrocoagulation.” J. Colloids Surface, A: Physical Chemical Engineering, 211, 233-248.

32- Gurses, A., Yalc, M., and Dogar, C. (2002). “Electrocoagulation of some reactive dyes: A statistical investigation of some electrochemical variables.” J. Waste Management, 22 (5), 491-499.

33- Othman, F., Sohaili, J., Niam, M.F., and Fauzia, Z. (2006). “Enhancing suspended solid removal from wastewater using Fe electrodes.” Malaysian Journal of Civil Engineering, 18, 139-148.