Adsorption Dynamics of Agricultural Waste Activated Carbon in Water Quality Improvement

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  •   Igbemi Arthur Igbemi

  •   Ify L. Nwaogazie

  •   Onyewuchi Akaranta

  •   G. O. Abu

Abstract

This study investigated the removal of Lead and Cadmium ions from aqueous solution using activated carbons from agricultural wastes. Activated carbons prepared by chemical activation using Phosphoric acid were characterized by Fourier Transform Infrared (FTIR), Scanning Electron Microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis. The influence of contact time, initial concentration and adsorbent dose which governed the efficiency of the process was ascertained through batch adsorption studies. Adsorption isotherms were determined by correlating with Langmuir and Freundlich isotherms and the kinetic studies were correlated with pseudo first order and pseudo second order equations. The results showed that the amount of Lead and Cadmium adsorbed decreased as the adsorbent dose increased while the adsorption capacity increased with increased in contact time and initial concentration. Activated carbons prepared from Coconut shell and palm kernel (shell and cake) competed favorably with the commercial activated carbon in percentage removal of the metal ions as all the activated carbons had over 90 % removal within 60 minutes when 1g of adsorbent was used. The equilibrium data fitted best into Freundlich isotherms for both metal ions. The rate of adsorption could be described by pseudo second order for all the adsorbents except Coconut shell activated carbon in the adsorption of Lead while intra-particle diffusion was the limiting step for Cadmium adsorption. Therefore, the agricultural by-products can be used as effective, low-cost, and environmentally friendly adsorbents for domestic water treatment in many parts of the world.


Keywords: Activated carbon, Adsorption, Agricultural waste, Cadmium, Isotherm, Kinetics, Lead

References

N. U. Udeh and J. C. Agunwamba,“Removal of Heavy Metals from Aqueous Solution using Bamboo Based Activated Carbon”. International journal of Engineering Inventions, vol.6(2): 01-12, 2017.

M. MadhavaRao, A. Ramesh, R, G. PurnaChandra and K. Seshaiah, “Removal of Copper and Cadmium from the Aqueous Solutions by Activated Carbon derived from Ceibapentandra Hulls”. Journal of Hazardous Materials, 123-129. doi: 10.1016/j.jhazmat.2005.08.018, 2005.

S. Sumathi, S. Bhatia, K. T. Lee and A. R. Mohamed, “Optimization of microporous palm shell activated carbon production for flue gas desulphurization: Experimental and statistical studies,” Bioresource Technology 100, p. 1614, 2009.

M.A. Alkhatib, S. Muyibi and J. Amode, “Optimization of activated carbon production from empty fruit bunch fibers in one-step steam pyrolysis for cadmium removal from aqueous solution,” The Environmentalist 31, p. 349, 2011.

S. E. Abechi, C. E. Gimba, A. Uzairu, and Y. A. Dallatu, “Preparation and Characterization of Activated Carbon from Palm Kernel Shell by Chemical Activation,” Research Journal of Chemical Sciences, 3(7): 54- 61, 2013.

P. C. N. Ejikeme, M. Ejikeme and G. N. Okonkwo, “Equilibrium, Kinetic and Thermodynamic Studies on Basic Dye Adsorption using Composite Activated Carbon,” International Journal of Technical research and Application, 2, 96- 103, 2014.

C. L. Lee, P. S. H’ng, M. T. Paridah, K. L. Chin, U. Rashid, M. Maminski and P. S. Khoo, “Production of Bioadsorbent from Phosphoric Acid Pretreated Palm Kernel Shell and Coconut Shell by Two-Stage Continuous Physical Activation via N2 and Air,” Royal Society Open Science, 5: 180775.doi.org/10.1098/rsos.180775, 2018.

K. C. Jun, A. A. AbdulRaman and A. Buthiyappan, “Treatment of Oil Refinery Effluent using Bio-Adsorbent Developed from Activated Palm Kernel Shell Zeolite,” Royal Society of Chemistry Advances.doi: 10.1039/d0ra03307c, 2020.

A. Allwar, “Preparation and Characteristics of Activated Carbon from Oil Palm Shell for Removal of Iron and Copper from Patchouli Oil,” International Journal of Applied Chemistry, 12(3): 183-192, 2016.

M. Ullah, R. Nazir, W. Khan, M. Shah, S. G. Afridi and A. Zada, “The Effective Removal of Heavy Metals from Water by Activated Carbon Adsorbents of Albizialebbeck and Meliaazedarach Seed Shells,” Soil and Water Research, 15: 30-37.doi.org/10.17221/212/2018-swr, 2020.

I. Langmuir, “The Constitution and Fundamental Properties of Solid and Liquids,” Journal of American Chemistry Society, 39: 2221- 2295, 1916

G. Vijayakumar, R. Tamilarasan and M. Dharmendirakumar, “Adsorption, Kinetic, Equilibrium and Thermothynamic Studies on the Removal of Basic Dye Rhodamine-B from Aqueous Solution by the use of Natural Adsorbent Perlite,” J. Mater. Environ. Sci., 3(1): 157-170, 2012.

H. M. F. Feundlich, “Over the Adsorption in the Solution”. Journal of Physical Chemistry 57A: 385- 470, 1906.

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How to Cite
[1]
Igbemi, I.A., Nwaogazie, I.L., Akaranta, O. and Abu, G.O. 2021. Adsorption Dynamics of Agricultural Waste Activated Carbon in Water Quality Improvement. European Journal of Engineering and Technology Research. 6, 7 (Nov. 2021), 11-19. DOI:https://doi.org/10.24018/ej-eng.2021.6.7.2526.