Treatment of dairy wastewater by graphene oxide nanoadsorbent and sludge separation, using In Situ Sludge Magnetic Impregnation (ISSMI)

Document Type : Original Research Paper

Authors

Department of Environmental Engineering, Graduate Faculty of Environment, University of Tehran, Tehran, Iran

Abstract

The present research investigates the ability of graphene oxide nanosheets for treatment of dairy wastewater, using In Situ Sludge Magnetic Impregnation” (ISSMI) to separate sludge after adsorption process. To increase the interaction between magnetic nanoparticles and graphene oxide, the former has been functionalized, using 3-Aminopropyl triethoxysilane, with the synthesized graphene oxide and magnetic nanoparticles being characterized by FT-IR, SEM, and NCHS analysis. The experiments have been conducted on the effluent of Pegah factory. The batch adsorption experiments have been carried out to investigate the effect of adsorbent dose, contact time, and pH on the removal of total nitrogen, total phosphorus, COD, and turbidity. At adsorbent dose of 320 mg L-1, the removal efficiencies of 90, 80, 84, and 94% have been observed for TN, TP, COD, and turbidity, respectively. The adsorbent data has been modeled by Langmuir and Freundlich isotherms, giving results that are compatible with Freundlich isotherm. TN, TP, and COD are mostly particulate materials in dairy wastewaters; therefore, when nanosheets aggregate, particulate materials are trapped between GO nanosheets; as a result, pollutants are distributed heterogeneously on the adsorbent's surface. Consequently, adsorption does not occur as monolayer on the surface of GO; for this reason, adsorption follows Freundlich model. Maximum absorption capacity of the adsorbent turns out to be 730 mg g-1 for total nitrogen, 600 mg g-1 for total phosphorus, 26000 mg g-1 for COD, and 5500 mg g-1 for turbidity. Adsorption kinetic has been studied with the first and second order equation, giving results that are compatible with second order equation. 

Keywords


Ali, I., Asim, M. and Khan, T.A. (2012). Low cost adsorbents for the removal of organic pollutants from wastewater. J. Environ. Manage., 113: 170-183.
Demirel, B., Yenigun, O. and Onay, T.T. (2005). Anaerobic treatment of dairy wastewaters: a review. Process Biochem., 40: 2583-2595.
Doğan, M., Alkan, M. and Onganer, Y. (2000). Adsorption of methylene blue from aqueous solution onto perlite. Water. Air. Soil Pollut., 120: 229-248.
Drogui, P., Asselin, M., Brar, S.K., Benmoussa, H. and Blais, J.F. (2008). Electrochemical removal of pollutants from agro-industry wastewaters. Sep. Purif. Technol., 61: 301-310.
Gavala, H.N., Kopsinis, H., Skiadas, I.V., Stamatelatou, K. and Lyberatos, G. (1999). Treatment of dairy wastewater using an upflow anaerobic sludge blanket reactor. J. Agric. Eng. Res., 73: 59-63.
Geetha Devi, M., Dumaran, J.J. and Feroz, S. (2012). Dairy wastewater treatment using low molecular weight crab shell chitosan. J. Inst. Eng. Ser. E, 93; 9-14.
Hameed, B.H. (2009). Spent tea leaves: A new non-conventional and low-cost adsorbent for removal of basic dye from aqueous solutions. J. Hazard. Mater., 161: 753-759.
Hummers J.W.S. and Offeman, R.E. (1958). Preparation of graphitic oxide. J. Am. Chem. Soc., 80: 1339.
Karale, S.S. and Suryavanshi, M.M. (2014). Dairy wastewater treatment using coconut shell activated carbon & laterite as low cost adsorbents. Int. J. Civil, Struct. Environ. Infrastruct. Eng. Res. Dev., 1: 9-14.
Khosroshahi, M.E. and Ghazanfari, L. (2012). Synthesis and functionalization of SiO2 coated Fe3O4 nanoparticles with amine groups based on self-assembly. Mater. Sci. Eng. C, 32: 1043-1049.
Kurniawan, A., Sutiono, H., Indraswati, N. and Ismadji, S. (2012). Removal of basic dyes in binary system by adsorption using rarasaponin-bentonite: Revisited of extended Langmuir model. Chem. Eng. J., 189-190: 264-274.
Kushwaha, J.P., Srivastava, V.C. and Mall, I.D. (2011). An overview of various technologies for the treatment of dairy wastewaters. Crit. Rev. Food Sci. Nutr., 51: 442-452.
Kushwaha, J.P., Srivastava, V.C. and Mall, I.D. (2010). Treatment of dairy wastewater by commercial activated carbon and bagasse fly ash: Parametric, kinetic and equilibrium modelling, disposal studies. Bioresour. Technol., 101: 3474-3483.
Loures, C.C.A., Filho, H.J.I., Samanamud, G.R.L., Souza, A.L., Salazar, R.F.S., Peixoto, A.L.C. and Guimarães, O.L.C. (2013). Performance evaluation of photo-fenton and fenton processses for dairy effluent treatment. Int. Rev. Chem. Eng., 5: 280.
Luo, J., Ding, L., Qi, B., Jaffrin, M.Y. and Wan, Y. (2011). A two-stage ultrafiltration and nanofiltration process for recycling dairy wastewater. Bioresour. Technol., 102: 7437-7442.
Mañas, A., Biscans, B. and Spérandio, M. (2011). Biologically induced phosphorus precipitation in aerobic granular sludge process. Water Res., 45: 3776-3786.
Manu, K.J., Mohana, V.S. and Ganeshaiah, K.N. (2011). Effluent generation by the dairy units: Characterization and amelioration for irrigation. Int J Res Chem Env., 1: 173-182.
Mitra, T., Singha, B., Bar, N. and Das, S.K. (2014). Removal of Pb(II) ions from aqueous solution using water hyacinth root by fixed-bed column and ANN modeling. J. Hazard. Mater., 273: 94-103.
Moharramzadeh, S. and Baghdadi, M. (2016). In situ sludge magnetic impregnation (ISSMI) as an efficient technology for enhancement of sludge sedimentation: Removal of methylene blue using nitric acid treated graphene oxide as a test process. J. Environ. Chem. Eng., 4: 2090-2102.
Moradi, O. and Maleki, M.S. (2013). Removal of COD from dairy wastewater by MWCNTs: adsorption isotherm modeling. Fullerenes, Nanotub. Carbon Nanostructures, 21: 836-848.
Murali, K., Karuppiah, P.L., Nithish, M., Kumar, S.S. and Raja, V.S. (2013). COD reduction using low cost biosorbent as part of cleaner production. Int. J. Sci. Res. Publ., 3: 1-3.
Omidinia, E., Shadjou, N. and Hasanzadeh, M. (2013). (Fe3O4)-graphene oxide as a novel magnetic nanomaterial for non-enzymatic determination of phenylalanine. Mater. Sci. Eng. C, 33: 4624-4632.
Porwal, H.J., Mane, A.V. and Velhal, S.G. (2015). Biodegradation of dairy effluent by using microbial isolates obtained from activated sludge. Water Resour. Ind., 9: 1-15.
Rahimi, Y., Torabian, A., Mehrdadi, N., Habibi-Rezaie, M., Pezeshk, H. and Nabi-Bidhendi, G.R. (2011). Optimizing aeration rates for minimizing membrane fouling and its effect on sludge characteristics in a moving bed membrane bioreactor. J. Hazard. Mater., 186: 1097-1102.
Särkkä, H., Vepsäläinen, M. and Sillanpää, M. (2015). Natural organic matter (NOM) removal by electrochemical methods- A review. J. Electroanal. Chem., 755: 100-108.
Tawfik, A., Sobhey, M. and Badawy, M. (2008). Treatment of a combined dairy and domestic wastewater in an up-flow anaerobic sludge blanket (UASB) reactor followed by activated sludge (AS system). Desalination, 227: 167-177.
Weber, W.J. and Morris, J.C. (1963). Kinetics of adsorption on carbon from solution. J. Sanit. Eng. Div., 89: 31-60.
Yavuz, Y., Öcal, E., Koparal, A.S. and Öğütveren, Ü.B. (2011). Treatment of dairy industry wastewater by EC and EF processes using hybrid Fe-Al plate electrodes. J. Chem. Technol. Biotechnol., 86: 964-969.
Zhu, Y., Murali, S., Cai, W., Li, X., Suk, J.W., Potts, J.R. and Ruoff, R.S. (2010). Graphene and graphene oxide: synthesis, properties, and applications. Adv. Mater., 22: 3906-24.
Zong, P., Wang, S., Zhao, Y., Wang, H., Pan, H. and He, C. (2013). Synthesis and application of magnetic graphene/iron oxides composite for the removal of U(VI) from aqueous solutions. Chem. Eng. J., 220: 45-52.