Removal of Cadmium Ions from Synthetic Wastewater by using Pennisetum purpureum (Elephant Grass) as Low Cost Biodegradable Adsorbent (Biosorbent)
DOI:
https://doi.org/10.46754/umtjur.v1i1.56Keywords:
adsorption, low cost adsorbent, cadmium, Pennisetum purpureumAbstract
At present, heavy metal pollution is a major environmental concern and the adsorption technique is a potent method for removal of these heavy metals from wastewater. Activated carbon is one of the best adsorbents for metal ions removal but it is sometimes restricted due to high cost and problems with regeneration hamper large scale application. Low cost adsorbent is alternatively being introduced to replace activated carbon since it is available in large quantity, renewable and inexpensive. Hence, Pennisetum purpureum (elephant grass) was investigated for its potential in cadmium ions removal. The adsorbent was characterized by Fourier Transforms Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) analyses. The effects of pH (1 to 5), initial metal ion concentration (5 to 25 mg/L), contact time (10 to 60 minutes) and adsorbent dosage (0.2 to 1.0 g) on cadmium ions removal were conducted by batch adsorption experiments. In this study, the FT-IR results demonstrated that the functional groups for untreated and nitric acid-treated P. purpureum mainly consisted of carbonyl, carboxyl, hydroxyl and amine groups which are able to bind with positively charged cadmium ions. SEM micrographs have proven that nitric acid modification would remove the surface impurities of P. purpureum, which increased the surface roughness, produced deep, open pores and better pore size distribution. From the BET and BJH analyses, the treated P. purpureum was mesoporous, had larger surface area and pore volume compared to untreated P. purpureum. The best pH, adsorbent dosage and contact time were pH 4, 0.6 g and 30 minutes, respectively. The highest removal percentage of cadmium ions for both untreated and treated P. purpureum were 92% and 98% correspondingly. The results shown strengthened the fact that both biosorbents have great potential in cadmium ions removal.
References
Al-Asheh, Banat, R., Al-Omari, Z. & Duvnjak, (2003). Beneficial reuse of chicken feathers in removal of heavy metals from wastewater. Cleaner Production, 11, 321-326.
Anayurt, R.A., Sari, A., & Tuzen, M. (2009). Equilibrium, Thermodynamic and Kinetic Studies on Biosorption of Pb(II) and Cd(II) from Aqueous Solution by Macrofungus (Lactarius scrobiculatus) Biomass. Chemical Engineering Journal, 151, 255 – 261.
Babarinde, N. A. A. & Babalola, J. O. (2010). The biosorption of Pb(II) from solution by elephant grass (pennisetum purpureum): Kinetic, equilibrium, and thermodynamic studies. The Pacific Journal of Science and Technology, 11 (1).
Babel, S. & Kurniawan T. A. (2004). Cr (VI) removal from synthetic wastewater using coconut shell charcoal and commercial activated carbon modified with oxidizing agents and/or chitosan. Chemosphere. 54 (7), 951 – 67.
Barakat, M. A. (2011). New trends in removing heavy metals from industrial wastewater. Arabian Journal of Chemistry, 4 (4), 361 – 377.
Ciesielczyk, F., Bartczak, P. & Jesionowski, T. (2016). Removal of cadmium (II) and lead(II) ions from model aqueous solutions using sol-gel derived inorganic oxide adsorbent. Springer, 22, 445 – 458.
Garg, V. K., Gupta, R., Yadav, A. B. & Kumar, R. (2003). Dye removal from aqueous solution by adsorption on treated sawdust. Bioresource Technology. 89, 121 – 124.
Hong, F., Jin, T. & Zhang, A. (2004). Risk assessment on renal dysfunction caused by co-exposure to arsenic and cadmium using benchmark dose calculation in a Chinese population. Biometals. 17, 573–580.
IARC (1993). Lyon IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. International Agency for Research on Cancer, 148–161, 206–210.
Javanbakht, V., Alavi, S. A. & Zilouei, H. (2014). Mechanisms of heavy metal removal using microorganisms as biosorbent. Water Science & Technolog,. 69 (9), 1775 – 1787.
Kamarullah, S. H., Mydin, M. M., Omar, W. S. A. W., Harith, S. S., Noor, B. H. M., Alias, N. Z. A., Manap, S. & Mohamad, R. (2015). Surface Morphology and Chemical Composition of Napier Grass Fibers. Malaysian Journal of Analytical Sciences, 19 (4), 889 – 895.
Koyu, A., Gokcimen, A., Ozguner, F., Bayram, D.S., Kocak, A. (2006). Evaluation of the effects of cadmium on rat liver. Molecular Cell. Biochemistry, 284, 81–85.
Qiao, X., Huang, W. & Bian, Y. (2014). Effective removal of cadmium ions from a simulated gastrointestinal fluid by Lentinus edodes. International Journal of Environmental Research and Public Health, 11 (2), 12486 – 12498.
Raja, P., Veerasingam, S., Suresh, G., Marichamy, G. & Venkatachalapathy, R. (2009). Heavy metals concentration in four commercially valuable marine edible fish species from Parangipettai Coast, South East Coast of India. International Journal of Animal and Veterinary Advances. 1 (1), 10 – 14.
Rao, K. S., Mohapatra, M., Anand, S. & Venkateswarlu, P. (2010). Review on cadmium removal from aqueous solution. International Journal of Engineering Science and Technology. 2, 81 – 103.
Raoul, T. T. D., Angwafor, N. G. N., Christian, N. S., Theopile, K., Manga, N. H., Gabche, A. S. & Mbadcam, K. J. (2016). Optimization of Cadmium (II) Adsorption onto Modified and Unmodified Lignocellulosics (Rice Husk and Egussi Peeling). International Journal of Basic and Applied Sciences. 5 (1), 45 – 51.
Tellez-Plaza, M., Navas-Acien, A., Crainiceanu, C. M. & Guallar, E. (2008). Cadmium exposure and hypertension in the 1999–2004 National Health and Nutrition Examination Survey (NHANES). Environmental Health Perspective, 116, 51–56.
Tumin, N. D., Chuah, A. L., Zawani, Z. & Rashid, S. A. (2008). Adsorption of copper from aqueous solution by Elais guineensis kernel activated carbon. Journal of Engineering Science and Technology. 3 (2), 180 – 189.
Ullah, M. R. & Haque, M. E. (2010). Spectrophotometric Determination of Toxic Elements (Cadmium) in Aqueous Media. Journal of Chemical Engineering, IEB. 25 (1).
Venkatesan, G. & Senthilnathan, U. (2013). Adsorption Batch Studies on the Removal of Cadmium using Wood of Derris Indica based Activated Carbon. Research Journal of Chemistry and Environment. 17 (5).
Wang, L., Liu, N., Guo, Z., Wu, D., Chen, W., Chang, Z., Yuan, Q., Hui, M. & Wang, J. (2016). Nitric Acid-Treated Carbon Fibers with Enhanced Hydrophilicity for Candida tropicalis Immobilization in Xylitol Fermentation. Materials. 9 (206).
Wong, K. K., Lee, C. K., Low, K. S. & Haron, M. J. (2003). Removal of Cu and Pb by tartaric acid modified rice husk from aqueous Solutions. Chemosphere. 50, 23 – 28.
Zhu, W. J., Wang, J. X., Wu, D., Li, X., Luo, Y., Han, C., Ma, W. & He, S. (2017). Investigating the heavy metal adsorption of mesoporous silica materials prepared by microwave synthesis. Nanoscale Research Letters, 12(1), 323.
