An Investigation on the Attack of Dye Species on Freshly Synthesized and Characterized Activated Carbon from Cocoa Pod


Department of Chemistry, Mangalore University, Mangalagangothri-574199, India


Activated carbon (AC) was synthesized from raw cocoa pod (RCP) by three activation methods; physical (CPC), chemical (Z CPC, zinc chloride) and microwave activation (MW-CPC). The synthesized AC was characterized using powder X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), Fourier transform infrared spectroscopic technique (FT-IR), thermal analysis and differential thermal analysis (TGA-DTA), atomic absorption spectroscopic technique (AAS)  and flame photometer instrument. The characterization data reveals that microwave activated carbon having good adsorbent character than physical and chemical activated carbon. Adsorption of malachite green on CPC, Z CPC and MW-CPC were studied at various experimental condition. Freundlich adsorption isotherm model holds good for the adsorption process. The mechanism of adsorption followed the second order kinetics. Thermodynamics of adsorption were studied. The amount of dye adsorbed onto activated carbons varies in the order MW-CPC (29.3632mg/g) > CPC (29.3537mg/g) > Z CPC (27.9905mg/g).


  1. A.W. Adamson, 1982. Physical Chemistry of Surfaces, John Wiley and Sons.
  2. A. R. Alberty and J.R. Silbey, 1995. Physical Chemisty, John Wiley and Sons.
  3. M.S. Shafeeyan, W.M.A.W. Daud, A. Houshmand and A. Shamiri, 2010. A review on  surface modification of activated carbon for carbon dioxide adsorption. Journal of Analytical and Applied Pyrolysis. 89: 143-151.
  4. D. Das, D.P. Samal and B.C. Meikap,  2015. Preparation of Activated Carbon from Green Coconut Shell and its Characterization, Journal of Chemical Engineering and Process Technology, 6(5): 1-7.
  5. R. Gandhimathi, S.T. Ramesh, V. Sindhu and P.V. Nidheesh, 2014. Removal characteristics of basic dyes from aqueous solutions by fly ash in single and tertiary systems, Joural of Scientific and Industrial Research,  73(4): 267-272.
  6. T. Ibrahim, B.L. Moctar, K. Tomkouani, D.B. Gbandi, D.K. Victor and N. Phinthe, 2014. Kinetics of the Adsorption of Anionic and Cationic Dyes in Aqueous Solution by Low-Cost Activated Carbons Prepared from Sea Cake and Cotton Cake, American Chemical Science Journal, 4(1): 38-57.
  7. V.K. Gupta, R. Jain, A. Mittal, T. A. Saleh, A. Nayak, S. Agarwal and S. Sikarwar, 2012. Photo-catalytic degradation of toxic dye amaranth on TiO2/UV in aqueous suspensions, Materials Science and Engineering C. 32(1): 12-17.
  8. S. Hashemian and J. Shayegan, 2014. A comparative Study of Cellulose Agricultural Wastes (Almond Shell, Pistachio Shell, Walnut Shell, Tea waste and Orange Peel) for Adsorption of Violet B dye from Aqueous Solutions, Oriental Journal of Chemistry. 30(4): 2091-2098.
  9. S.T. Ong, P.S. Keng, S.L. Lee and Y.T. Hung, 2014. Low Cost Adsorbents for Sustainable Dye Containing-Wastewater Treatment, Asian Journal of Chemistry, 26(7): 1873-1881.
  10. O.S. Bello, M.A. Ahmad and T.T. Siang, 2011. Utilization of Cocoa pod Husk for the Removal of Remaol Black B Reactive Dye from Aqueous Solutions: Kinetic, Equilibrium and Thermodynamic studies, Trends in Applied Sciences Research, 6(8): 794-812.
  11. I.R. Ilaboya, E.O. Oti, G.O. Ekoh and L.O. Umukor, 2013. Performance of Activated Carbon from Cassava Peels for the Treatment of Effluent Wastewate. Iranica Journal of Energy & Environment 4 (4): 361-375.
  12. Y.S.  Mohammad,  E.M.  Shaibu-Imodagbe,  S.B.  Igboro,  A.  Giwa  and  C.A. Okuofu, 2014. Adsorption of Phenol from Refinery Wastewater Using Rice Husk Activated Carbon. Iranica Journal of Energy and Environment, 5 (4): 393-399.
  13. Y.S. Mohammad, E.M. Shaibu-Imodagbe, S.B. Igboro, A. Giwa, C.A. Okuofu, 2015. Effect of Phosphoric Acid Modification on Characteristics of Rice Husk Activated Carbon. Iranica Journal of Energy and Environment, 6 (1):20-25.
  14. K. Ramakrishnan and C. Namasivayam, 2011. Zinc chloride activated Jatropha husk carbon for removal of phenol from water by adsorption: Equilibrium and kinetic studies, Toxicological & Environmental Chemistry, 93(6): 1111-1122.
  15. M. Turoti, E. Bello, Cypermethrin Adsorption unto Sodium Chloride-Activated Cacao Theobroma (Cocoa) pod Using Digital GC, World Ru. Obs. 5 (2013) 64-73.
  16. P.D. Pathak and S.A. Mandavgane, 2015. Preparation and characterization of raw and carbon from banana peel by microwave activation : Application in citric acid adsorption, 3: 2435-2447.
  17. S. Talam, S.R. Karumuri and N. Gunnam, 2012. Synthesis, Characterization, and Spectroscopic properties of ZnO Nanoparticles, ISRN Nanotechnology. 2012(2012): 1-6.
  18. Z.M. Khoshhesab, M.Sarfaraz and M.A. Asadabad, 2011. Preparation pf ZnO nano structures by chemical precipitation method, Synthesis and Reactivity in Inorganic, Metal-organic and Nano-metal Chemistry, 41(7): 814-819.
  19. J. Zhou, F. Zhao, Y. Wang, Y. Zhang and L. Yang, 2007. Size-controlled synthesis of ZnO nanoparticles and their photoluminescence properties, Journal of Lumiescence, 122(1): 195-197.
  20. M.M.B. Abbad, A.A.H. Kadhum, A.B. Mohamad, M.S. Takriff and K.Sopian, 2012. Synthesis and Catalytic Activity of TiO2 Nanoparticles for Photochemical Oxidation of Concentrated Chlorophenols under Direct Solar Radiation, Inernational Journal of Electrochemical Science, 7(6): 4871 – 4888.
  21. Z.R. Khan, M.S. Khan, M. Zulfequar and M.S. Khan, 2011. Optical and Structural Properties of ZnO Thin Films Fabricated by Sol-Gel Method, Materials Sciences and Applications, 2(5); 340-345.
  22. L.P. Xiao, Z.J. Sun, Z.J. Shi, FengXu and R.C. Sun, 2011. Impact of hot compressed water pretreatment on the structural changes of woody biomass for bioethanol production, BioResources, 6(2): 1576-1598.
  23. M.A. Ahmad, N. Ahmad and O.S. Bello, 2015. Adsorption Kinetic Studies for the Removal of Synthetic Dye Using Durian Seed Activated carbon, Journal of Dispersion Science and Technology. 36(5): 670-684.
  24. D. Sun, Z. Zhang, M. Wang and Y. Wu, 2013. Adsorption of Reactive Dyes on Activated Carbon Developed from Enteromorpha prolifera, American Journal of Analytical Chemistry, 4(7A): 17-26.
  25. S.K. Deokar, S.A. Mandavgane and B.D. Kulkarni, 2016. Behaviour of biomass multicomponent ashes as adsorbents, Current Science, 110(2): 180-186.
  26. S.M. Yakout and M.M.S. Ali, 2011. Sorption of cationic dyes onto activated carbon derived from agro-residues, Journal of Atomic and Molecular Sciences, 2(2): 117-128.
  27. M.H. Karaoglu, S. Zor and M. Ugurlu, 2010. Biosorption of Cr(III) from solutions using vineyard pruning pruning waste, Chemical Engineering Journal, 159(13): 98-106.