Investigation of Cu and Co Removal from mining industrial wastewater using synthesized Magnetite-Bentonite nano adsorbent

Authors

1 Ph.D Student, Dept. of Mining, Sahand University of Technology

2 Assistant Professor, Dept. of Mining, Imam khomeini International University

Abstract

Heavy metals removal from polluted wastewater is one of the major concerns due to their harmful effectson human health and the environment. The aim of this study is to absorb Cu2+ and Co+2 ions from wastewater by means of a synthesized magnetite bentonite nono - adsorbent. Initially, nano- adsorbent was produced by coprecipitation techniques. Then, the resultant material was analyzed and evaluated by FT-IR, XRD and SEM methods, and it was used as an adsorbent in filtration stages. In this research, the central composite design was used for the design and programming of the experiments. The effects of different variables including adsorbent amount, contact time, metal ion concentration, and pH were studied on the Cu and Co ion removal. Then, optimum conditions were suggested for the highest absorption  conditions using CCD designing model. The results show 94% and 95% removal for Cu2+ and Co+2, respectively.  Finally by determining the optimum conditions, examinations were carried out on Sarcheshmeh copper mine tailings and the results show 30% and 50% removal for Cu2+ and Co+2 respectively.

Keywords


[1]     Shokouhi, M., Faghihian, H., and Nourmoradi, H. (2010). “A survey on efficiency of modified silica aerogel to remove of heavy metals from aqueous solutions”.  Journal subscribes to the principles of the Committee on Publication Ethics (COPE), 6: 974-982.
[2]     Meena, A. K. (2005). “Studies on treatment of conta- minated water containing heavy metals in Jaipur and Pali”. Doctoral dissertation, Ph D Thesis, University of Rajasthan, Jaipur.
[3]     Li, N., and Bai, R. (2005). “Copper adsorption on chito- san–cellulose hydrogel beads: behaviors and mechanisms”.JournalSeparation Purification Technolo- gy, 42: 237–247.
[4]     Appel, C., and Mae, L. (2002). “Concentration, pH, and surface charge effects on cadmium and lead sorption in three tropical soil”. Journal of Environmental Quality, 31: 581-589.
[5]     Liu, X., Hu, Q., Fang, Z.,  Zhang, X., and Zhang, B. (2009). “Magnetic chitosan nanocomposites: a useful recyclable tool for heavy metal ion removal”. Langmuir, 25: 3–8.
[6]     Guilherme, M. R.,  Reis, A. V., Paulino, A. T., Fajardo, A. R., Muniz, E. C., and Tambourgi, E. B. (2007). “Superabsorbent hydrogel based on modified polysaccharide for removal of Pb2þ and Cu2þ from water with excellent performance”. Journal Appllied Polymer Science, 105: 2903–2909.
[7]     Vinodhini, R., and Narayanan, M. (2008). “Bioaccumu- lation of heavy metals in organs of fresh water fishCyprinuscarpio (Common carp)”. International Journal of Environmental Science & Technology, 5: 179-182.
[8]     Kurniawan, T. A., Chan, G. Y., and Babel, S. (2006). “comparison of low cost adsorbents for treating waste water laden with heavy metals: a review”. Journal Science of the Total Environment, 1: 409-26.
[9]     Crini, G. (2005). “Recent developments in polysac- charide-based materials used as adsorbents in wastewater treatment”. Progress in polymer science, 30: 38-70.
[10]  Huang, G. L., Yang, C., Zhang, K., and Shi, J. (2009). “aqueous solution using cross-linked magnetic chitosan bead”. Chinese Journal of Chemical Engineering, 17: 960–966.
[11]  Shahwan, T., Üzüm, Ç., and Eroğlu, A. E. (2010). “Lieberwirth Synthesis and characterization of bentonite/iron nanoparticles and their application as adsorbent of cobalt ions”. Journal Applied Clay Science, 47: 257–262.
[12]  Panneerselvam, P., and Norhashimah, M. (2006). “Magnetic nanoparticle (Fe3O4) impregnated onto tea waste for the removal of nickel(II) from aqueous solution”. Materials, 186: 160–168.
[13]  Li-na, S., Zhang, X., and Zu-liang, Ch. ( 2011). “Removal of Chromium (VI) from wastewater using bentonite-supported nanoscale zero-valent iron”. Water Research, 45: 886-892.
[14]  مرندی، رضا؛ ابراهیمی زرندی، محمدجواد؛ کوشش، محمد؛ 1389؛ "بررسیتصفیهبیولوژیکی حذف فلزاتسنگین از آب زهکشاسیدی معدن مس سرچشمه بر پایه عملکرد راکتورهای ناپیوسته با عملیات متوالی"، فصلنامه علوم و تکنولوژی محیط زیست، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، دوره 12، شماره 3، ص 43-35.
[15]  کریم­پور، محمدحسن؛ 1384؛ کتاب:"زمین شناسی اقتصادی کاربر- دی"، انتشارات ارسلان، ص 536.
[16]  ونیتر، مارک؛ ترجمه: بهشتی، علی؛ 1378؛ کتاب:"شیمی عناصر دسته d"، انتشارات دانشگاه شهید چمران  اهواز، ص 224.
[17]  آقابزرگ، حسن؛ 1383؛ کتاب:"شیمی معدنی 2"، انتشارات جهاد دانشگاهی تربیت معلم، ص 516.