Abstract
In this research, corrosion inhibitors were synthesized using locally available biomass, alfalfa plant. The inhibitor performance was evaluated at different operating conditions and the effect of process variables, namely inhibitor concentration (1–5%v/v), operating temperature (308.15–328.15 K) and method of extraction (alcohol and aqueous) were studied. The corrosion rate of aluminum decreased with increase in inhibitor concentration and the best result attained was 3.7 mg cm−2 h−1 with 5%v/v AALE and 308.15 K. The increase in temperature resulted in the decrease in inhibition efficiency, which could be related to detachment of inhibitors at elevated temperatures. The Langmuir adsorption Isotherm fitted well to the corrosion experiment data (R2>0.990) and thermodynamic parameters were calculated. The value of separation factor (0<RL<1) confirmed the favorable adsorption of corrosion inhibitor on the metal surface. Surface characterization of the green inhibitor using scanning electron microscopy was conducted to understand the morphology and FTIR spectrum was used to identify the main functional groups for Alfalfa extracts. The alcoholic extract possessed comparatively higher number of surface-active groups and produced better performance than aqueous extract. Arrhenius plots were employed to determine the activation energy. Tafel plot was used to determine theoretical corrosion current and potential. Electrochemical impedance spectroscopy inhibition efficiency was found to be 90.91% with 5% AALE.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
G. Asan and A. Asan, J. Mol. Struct., 1201, 127184 (2020).
I. O. Zvirko, S. F. Savula, V. M. Tsependa, G. Gabetta and H. M. Nykyforchyn, Procedia Struct. Integrity, 2, 509 (2016).
E. A. Şahin, R. Solmaz, İ. H. Gecibesler and G. Kardaş, Mater. Res. Express., 7(1), 016585 (2020).
C. Verma, J. Haque, M. A. Quraishi and E. E. Ebenso, J. Mol. Liq., 275, 18 (2019).
S. Bashir, A. Thakur, H. Lgaz, I. M. Chung and A. Kumar, Arab. J. Sci. Eng., 45, 4773 (2020).
S. Bashir, V. Sharma, H. Lgaz, I. M. Chung, A. Singh and A. Kumar, J. Mol. Liq., 263, 454 (2018).
P. Shetty, Chem. Eng. Commun., 207, 985 (2020).
S. Marzorati, L. Verotta and S. P. Trasatti, Molecules, 24, 48 (2019).
M. Goyal, S. Kumar, I. Bahadur, C. Verma and E.E. Ebenso, J. Mol. Liq., 256, 565 (2018).
P. Jain, B. Patidar and J. Bhawsar, J. Bio-and Tribo-Corrosion, 6, 1 (2020).
V. S. Saji and S.A. Umoren, Corrosion inhibitors in the oil and gas industry, Wiley-VCH (2020).
B. El Ibrahimi, A. Jmiai, L. Bazzi and S. El Issami, Arabian J. Chem., 13(1), 740 (2020).
S. Bashir, A. Thakur, H. Lgaz, I. M. Chung and A. Kumar, J. Mol. Liq., 293, 111539 (2019).
B. Tan, J. He, S. Zhang, C. Xu, S. Chen, H. Liu and W. Li, J. Colloid Interface Sci., 585, 287 (2021).
X. Zhang, W. Li, X. Zuo, B. Tan, C. Xu and S. Zhang, J. Mol. Liq., 325, 115214 (2021).
S. Bashir, A. Thakur, H. Lgaz, I. M. Chung and A. Kumar, Surf. Interfaces, 20, 100542 (2020).
B. Tan, B. Xiang, S. Zhang, Y. Qiang, L. Xu, S. Chen and J. He, J. Colloid Interface Sci., 582, 918 (2021).
X. Zheng, M. Gong, Q. Li and L. Guo, Sci. Rep., 8, 1 (2018).
A. Singh, I. Ahamad and M. A. Quraishi, Arabian J. Chem., 9, S1584 (2016).
N. Chaubey, Savita, V. K. Singh and M. A. Quraishi, J. Assoc. Arab Univ. Basic Appl. Sci., 22(1), 38 (2017).
G. Cui, J. Guo, Y. Zhang, Q. Zhao, S. Fu, T. Han, S. Zhang and Y. Wu, Carbohydr. Polym., 203, 386 (2019).
M. R. Singh, P. Gupta and K. Gupta, Arabian J. Chem., 12, 1035 (2019).
C. Pan, M. Guo, W. Han, Z. Wang and C. Wang, Corros. Eng. Sci. Techn., 54(3), 241 (2019).
Y. Yaocheng, Y. Caihong, A. Singh and Y. Lin, New J. Chem., 43(40), 16058 (2019).
S. Kagatikar, B. P. Charitha and R. Padmalatha, Surf. Eng. Appl. Electrochem., 56(3), 381 (2020).
I. B. Onyeachu, I. B. Obot, A. A. Sorour and M. I. Abdul-Rashid, Corros. Sci., 150, 183 (2019).
M. P. Hojilla-Evangelista G. W. Selling, R. Hatfield and M. Digman, J. Sci. Food Agric., 97, 882 (2017).
H. Lgaz, S. Masroor, M. Chafiq, M. Damej, A. Brahmia, R. Salghi and I. M. Chung, Metals., 10, 357 (2020).
H. Hassannejad and A. Nouri, J. Mol. Liq., 254, 377 (2018).
E. Naseri, M. Hajisafari, A. Kosari, M. Talari, S. Hosseinpour and A. Davoodi, J. Mol. Liq., 269, 193 (2018).
N. K. Gupta, P. G. Joshi, V. Srivastava and M. A. Quraishi, Int. J. Biol. Macromo., 106, 704 (2018).
A. S. Yaro, A. A. Khadom and R. K. Wael, Alexandria Eng. J., 52, 129 (2013).
O. A. Akinbulumo, O. J. Odejobi and E. L. Odekanle, Results Mater., 5, 100074 (2020).
K. S. M. Ferıgıta and F. Kandemirli, Int. J. Glob. Sci. Res., 1, 289 (2020).
G. Ji, S. Anjum, S. Sundaram and R. Prakash, Corros. Sci., 90, 107 (2015).
P. E. Alvarez, N. V. Fiori-Bimbi, A. Neske, S. A. Brandán and C. A. Gervasi, J. Ind. Eng. Chem., 58, 92 (2018).
S. Devikala, P. Kamaraj, M. Arthanareeswari and M. B. Patel, Mater. Today. Proc., 14, 580 (2019).
L. T. Popoola, Corros. Rev., 37, 71 (2019).
K. Xhanari and M. Finšgar, Arabian J. Chem., 12, 4646 (2019).
I. B. Obot, S. A. Umoren and N. K. Ankah, J. Mol. Liq., 277, 749 (2019).
Y. Sushmitha and P. Rao, Port. Electrochim. Acta., 38(3), 149 (2020).
A. Singh, E. E. Ebenso and M. A. Quraishi, Int. J. Electrochem. Sci., 7, 3409 (2012).
M. Akin, S. Nalbantoglu, O. Cuhadar, D. Uzun and N. Saki, Res. Chem. Intermed., 41, 899 (2015).
M. Abdallah, H. M. Altass, A. S. Al-Gorair, J. H. Al-Fahemi, B. A. A. L. Jahdaly and K. A. Soliman, J. Mol. Liq., 323, 115036 (2021).
X. Li, S. Deng and X. Xie, Corros. Sci., 81, 162 (2014).
D. Prabhu and P. Rao, J. Environ. Chem. Eng., 1, 676 (2013).
Acknowledgements
The authors acknowledge the financial support provided to conduct the research studies by The Research Council of Oman and infrastructure provided by Sohar University.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Natarajan, R., Al Shibli, F. Corrosion inhibition of aluminum under basic conditions using Medicago sativa L. extract — thermodynamic studies. Korean J. Chem. Eng. 38, 1903–1912 (2021). https://doi.org/10.1007/s11814-021-0851-z
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-021-0851-z