Applications of Nanotechnology in Water and Wastewater Treatment: A Review
Water pollution due to heavy metals, organic and inorganic matters and biological organisms is a matter of serious concern all around the globe. Thus, providing clean and safe drinking water at a reasonable cost has become a challenge nowadays. Therefore the importance of technological advancement to facilitate integrated water management cannot be overruled. Due to this, emergence of nanotechnology has delivered pioneering solution to problems in the field of medicine, engineering, physics, chemistry, etc. Nanotechnology is basically the world of science employing nanoparticle for various engineering applications including environmental remediation. Among the nano-based techniques, use of nanoadsorbents, nanomembranes, and nano-photocatalysts has been quite promising in water and wastewater treatment, at both small and commercial scale. Nanoparticles have a higher aspect ratio, larger pore-volume, electrostatics, a higher specific surface area which is quite useful in processes like sorption, catalysis, censoring in the field of water treatment having higher efficiency, flexibility, being multifunctional and affordability. Considering these aspects, nanotechnology has proved to be an innovative, eco-friendly and an advanced treatment technique. The main limitation in applying nanotechnology is that uptil now most of the researches are confined to laboratory or pilot scale only. In this review, we have discussed in brief about a few recently used nanomaterials that are presently employed in treating water, with a focus on nanobased adsorbents and filtration membranes.
Bellona, C. and J.E. Drewes (2007). Viability of a low-pressure nanofilter in treating recycled water for water reuse applications: A pilot-scale study. Water Research, 41, 3948-3958
Bruggen, B.V.D., Manttari, M. and M. Nystrom (2008). Drawbacks of applying nanofiltration and how to avoid them: A review. Separation and Purification Technology, 63, 251-263.
Cohen, Y. (2006). Membrane surface nano-structuring: Selective enhancement, fouling reduction and mineral scale formation. In: US-Israeli Nanotechnology for Water Purification Workshop, Arlington, Virginia, USA, March 13-15, 2006.
Das, R., Ali, M.E., Hamid, S.B.A., Ramakrishna, S. and Z.Z. Chowdhury (2014). Carbon nanotube membranes for water purification: A bright future in water desalination. Desalination, 336, 97-109.
Dotzauer, D.M., Dai, J., Sun, L. and M.L. Bruening (2006). Catalytic membranes prepared using layer-by-layer adsorption of polyelectrolyte/metal nanoparticle films in porous supports. Nano Letters, 6, 2268-2272.
Diasa, J.M., Alvim-Ferraza, M.C.M., Almeida, M.F., Rivera-Utrilla, J. and M. Sánchez-Polo (2007). Waste materials for activated carbon preparation and its use in aqueous-phase treatment: A review. J. Environ. Manage., 85, 833-846.
Hollman, A.M. and D. Bhattacharyya (2004). Pore assembled multilayers of charged polypeptides in microporous membranes for ion separation. Langmuir, 20, 5418-5424.
Hu, J., Chen, G. and I.M.C. Lo (2005). Removal and recovery of Cr(VI) from wastewater by maghemite nanoparticles. Water Research, 39, 4528-4536.
Khan, S.U., Farooqi, I.H. and S. Ayub (2017). Studies on application of Fe based binary oxide nanoparticles for treatment of lead (Pb2+) contaminated water: A batch study. Materials Today: Proceedings, 4, 9650-9655.
Khan, S.U., Zaidi, R., Hassan, S.Z., Farooqi, I.H. and A. Azam (2016). Application of Fe-Cu binary oxide nanoparticles for the removal of hexavalent chromium from aqueous solution. Water Sci. Technol., 74, 165-175.
Khan, S.U., Noor, A. and I.H. Farooqi (2015). GIS application for groundwater management and quality mapping in rural areas of District Agra, India. Int. J. Water Res. and Arid Env., 4(1), 89-96.
Lau, W.J., Gray, S., Matsuura, T., Emadzadeh, D., Paul Chen, J. and A.F. Ismail (2015). A review on polyamide thin film nanocomposite (TFN) membranes: History, applications, challenges and approaches. Water Res., 80, 306-324.
Leung, W.C., Wong, M.F., Chua, H., Lo, W. and C.K. Leung (2000). Removal and recovery of heavy metals by bacteria isolated from activated sludge treating industrial effluents and municipal wastewater. Water Sci. Technol., 41(12), 233-240.
Li, Y.-H., Ding, J., Luan, Z., Di, Z., Zhu, Y., Xu, C., Wu, D. and B. Wei, B., (2003). Competitive adsorption of Pb2+, Cu2+ and Cd2+ ions from aqueous solutions by multiwalled carbon nanotubes. Carbon, 41, 2787-2792.
Linder, C. and Y. Oren (2006). Relationships between materials parameters of nanofiltration membranes and the resultant membrane performance. In: US–Israeli: Nanotechnology for Water Purification Workshop, Arlington, Virginia, USA, March 13–16.
Manttari, M., Viitikko, K. and M. Nystrom (2006). Nanofiltration of biologically treated effluents from the pulp and paper industry. Journal of Membrane Science, 272, 152-160.
Mohan, D. and C.U. Pittman Jr. (2007). Arsenic removal from water/wastewater using adsorbents: A critical review. Journal of Hazardous Materials, 142, 1-53.
Pillay, K., Cukrowska, E.M. and N.J. Coville (2009). Multi-walled carbon nanotubes as adsorbents for the removal of parts per billion levels of hexavalent chromium from aqueous solution. J. Hazard. Mater., 166, 1067-1075.
Ponder, S.M., Darab, J.G. and T.E. Mallouk (2000). Remediation of Cr6+ and Pb2+ aqueous solutions using supported nanoscale zero-valent iron. Environ. Sci. Technol., 34, 2564-2569.
Qi, X., Li, N., Xu, Q., Chen, D., Li, H. and J. Lu (2014). Water-soluble Fe3O4 superparamagnetic nanocomposites for the removal of low concentration mercury(II) ions from water. RSC Adv., 4, 47643-47648.
Qu, X., Brame, J., Li, Q. and P.J.J. Alvarez (2013b). Nanotechnology for a safe and sustainable water supply: Enabling integrated water treatment and reuse. Acc. Chem. Res., 46, 834-843.
Qu, Xiaolei, Alvarez, Pedro J.J. and Qilin Li (2013a). Applications of nanotechnology in water and wastewater treatment. Water Research, 47, 3931-3946.
Satyawali, Y. and M. Balakrishnan (2008). Wastewater treatment in molasses-based alcohol distilleries for COD and color removal: A review. Journal of Environmental Management, 86, 481-497.
Shipley, H., Engates, K. and V. Grover (2013). Removal of Pb(II), Cd(II), Cu(II), and Zn(II) by hematite nanoparticles: Effect of sorbent concentration, pH, temperature, and exhaustion. Environ. Sci. Pollut. Res., 20, 1727-1736.
Theron, J., Walker, J.A. and T.E. Cloete (2008). Nanotechnology and Water Treatment: Applications and Emerging Opportunities. Critical Reviews in Microbiology, 34, 43-69.
Tu, Y.-J., You, C.-F., Chang, C.-K., Wang, S.-L. and T.-S. Chan (2012). Arsenate adsorption from water using a novel fabricated copper ferrite. Chem. Eng. J., 198-199, 440-448.
Ullah, R. and J. Dutta (2008). Photocatalytic degradation of organic dyes with manganese-doped ZnO nanoparticles. Journal of Hazardous Materials, 156, 194-200.
Vuković, G.D., Marinković, A.D., Cǒlić, M., Ristić, M.Đ., Aleksić, R., Perić-Grujić, A.A. and P.S. Uskoković (2010). Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes. Chem. Eng. J., 157, 238-248.
Wegmann, M., Michen, B. and T. Graule (2008). Nanostructured surface modification of microporous ceramics for efficient virus filtration. Journal of the European Ceramic Society, 28, 1603-1612.
Xiao, L., Erdei, L., McDonagh, A. and M. Cortie (2008). Photocatalytic nanofibres. ICONN, 2008. International Conference on Nanoscience and Nanotechnology, Melbourne, Vic, Australia.
Zhang, G., Ren, Z., Zhang, X. and J. Chen (2013). Nanostructured iron(III)-copper(II) binary oxide: A novel adsorbent for enhance arsenic removal from aqueous solutions. Water Res., 47, 4022-4031.
Zhang, W.-X. (2006). Nanotechnology for water purification and waste treatment: Frontiers in Nanotechnology, US EPA Millennium Lecture Series, July 18 2005. Washington, D.C., USA.
Zodrow, K., Brunet, L., Mahendra, S., Li, D., Zhang, A., Li, Q. and P.J.J. Alvarez (2009). Polysulfide ultrafiltration membranes impregnated with silver nanoparticles show improved biofouling resistance and virus removal. Water Research, 43, 715-723.