1. V.O Njoku, M. Asif, B.H. Hameed, 2,4-dichlorophenoxyacetic acid adsorption onto coconut shell-activated carbon: isotherm and kinetic modelling, Desal. Water Treat., 55(1) (2015) 1–10.
  2. E. Bazrafshan, F.K. Mostafapour, H. Faridi, M. Farzadkia, S. Sargazi, A. Sohrabi, Removal of 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous environments using single-walled carbon nanotubes, Health Scope., 2(1) (2013) 39–46.
  3. Y.F. Chao, P.C. Chen, S.L. Wang, Adsorption of 2,4-D on Mg/Al-NO3 layered double hydroxides with varying layer charge density, Appl. Clay Sci., 40 (2008) 193–200.
  4. M. Dehghani, S. Nasseri, M. Karamimanesh, Removal of 2,4-dichlorophenolyxacetic acid (2,4-D) herbicide in the aqueous phase using modified granular activated carbon, J. Environ. Health Sci. Eng., 12(28) (2014) 1–10.
  5. B.H. Hameed, J.M. Salman, A.L. Ahmad, Adsorption isotherm and kinetic modelling of 2,4-D pesticide on activated carbon derived from date stones, J. Hazard. Mater., 163(1) (2009) 121–126.
  6. E. Suganya, S. Rangabhashiyam, A.V. Lity, N. Selvaraju, Removal of hexavalent chromium from aqueous solution by a novel biosorbent Caryota urens seeds: equilibrium and kinetic studies, Desal. Water Treat., 57(50) (2016) 23940–23950.
  7. S. Rangabhashiyam, M.S.G. Nandagopal, E. Nakkeeran, N. Selvaraju, Adsorption of hexavalent chromium from synthetic and electroplating effluent on chemically modified Swietenia mahagoni shell in a packed bed column, Environ. Monit. Assess., 188(7) (2016) 411.
  8. J.M. Salman, B.H. Hameed, Adsorption of 2,4-dichlorophenoxyacetic acid and carbofuran pesticides onto granular activated carbon, Desalination, 256 (2010) 129–135.
  9. V. Nair, R. Vinu, Peroxide-assisted microwave activation of pyrolysis char for adsorption of dyes from wastewater, Bioresour. Technol., 216 (2016) 511–519.
  10. F.T. Kamga, Modeling adsorption mechanism of Paraquat onto Ayous (Triplochiton scleroxylon) wood sawdust, Appl. Water Sci., 9(1) (2019) 1–7.
  11. E.E. Priya, P.S. Selvan, Water hyacinth (Eichhornia crassipes) - An efficient and economic adsorbent for textile effluent treatment-A review, Arab. J. Chem., 10(2) (2014) S3548–S3558.
  12. I.A.H. Schneider, J. Rubio, M. Misra, R.W. Smith, Eichhornia crassipes as biosorbent for heavy metal ions, Miner. Eng., 8(9) (1995) 979–988.
  13. K.S. Low, C.K. Lee, K.K. Tan, Biosorption of basic dyes by water hyacinth roots, Bioresour. Technol., 52(1) (1995) 79–83.
  14. K. Yang, Y. Jiang, J. Yang, D. Lin, Correlations and adsorption mechanisms of aromatic compounds on biochars produced from various biomass at 700°C, Environ Pollut., 233 (2018) 64–70.
  15. B. Girisuta, B. Danon, R. Manurung, L.P.B.M. Janssen, H.J. Heeres, Experimental and kinetic modelling studies on the acid-catalysed hydrolysis of the water hyacinth plant to levulinic acid, Bioresour. Technol., 99(17) (2008) 8367–8375.
  16. V.O. Njoku, B.H. Hameed, Preparation and characterization of activated carbon from corncob by chemical activation with H3PO4 for 2,4-dichlorophenoxyacetic acid adsorption, Chem. Eng. J., 173(2) (2011) 391–399.
  17. R. Elangovan, L. Philip, K. Chandraraj, Biosorption of chromium species by aquatic weeds: Kinetics and mechanism studies, J. Hazard. Mater., 152(1) (2008) 100–112.
  18. Y. Miller, G.M. Chaban, R.B. Gerber, Ab initio vibrational calculations for H2SO4 and H2SO4·H2O: Spectroscopy and the nature of the anharmonic couplings, J. Phys. Chem. A., 109(29) (2005) 6565–6574.
  19. V. Nair, A. Panigrahy, R. Vinu, Development of novel chitosan-lignin composites for adsorption of dyes and metal ions from wastewater, Chem. Eng. J., 254 (2014) 491–502.
  20. R. Han, L. Zhang, C. Song, M. Zhang, H. Zhu, L. Zhang, Characterization of modified wheat straw, kinetic and equilibrium study about copper ion and methylene blue adsorption in batch mode, Carbohydr. Polym., 79(4) (2010) 1140–1149.
  21. N. Bujang, M.N.M. Rodhi, M. Musa, F. Subari, N. Idris, N.S.M. Makhtar, K.H.K Hamid, Effect of dilute sulfuric acid hydrolysis of coconut dregs on chemical and thermal properties, Procedia Eng., 68 (2013) 372–378.
  22. Z.R. Komy, W.H. Abdelraheem, N.M. Ismail, Biosorption of Cu2+ by Eichhornia crassipes: Physicochemical characterization, biosorption modelling and mechanism, J. King Saud Univ-Sci., 25(1) (2013) 47–56.
  23. N.M. Muchanyereyi, J. Kugara, M.F. Zaranyika, Thermodynamic parameters for the adsorption of volatile n-alkane hydrocarbons on water hyacinth (Eichhornia crassipes) root biomass: Effect of organic solvent and mineral acid treatment, Afr. J. Environ. Sci. Technol., 9(3) (2015) 282–291.
  24. N.M. Muchanyereyi, J. Kugara, M.F. Zaranyika, Surface composition and surface properties of water hyacinth (Eichhornia crassipes) root biomass: Effect of mineral acid and organic solvent treatment, Afr. J. Biotechnol., 15 (2016) 897–909.
  25. N. Saranya, E. Nakkeeran, S. Shrihari, N. Selvaraju, Equilibrium and kinetic studies of hexavalent chromium removal using a novel biosorbent: Ruellia Patula Jacq, Arab. J. Sci. Eng., 42(4) (2017) 1545–1557.
  26. S.N. Trivedi, R.A. Kharkar, S.A. Mandavgane, Utilization of cotton plant ash and char for removal of 2,4-dichlorophenoxyacetic acid, Resour. Technol., 2 (2016) S39–S46.
  27. D. Borah, S. Satokawa, S. Kato, T. Kojima, Surface-modified carbon black for As (V) removal, J. Colloid Interface Sci,. 319(1) (2008) 53–62.
  28. J.P. Kearns, L.S. Wellborn, R.S. Summers, D.R. Knappe, 2,4-D adsorption to biochars: Effect of preparation conditions on equilibrium adsorption capacity and comparison with commercial activated carbon literature data, Water Res., 62 (2014) 20–28.
  29. D. Pathania, S. Sharma, P. Singh, Removal of methylene blue by adsorption onto activated carbon developed from Ficus carica bast, Arab. J. Chem., 10(1) (2017) S1445–S1451.
  30. G. Annadurai, L.Y. Ling, J.F. Lee, Adsorption of reactive dye from an aqueous solution by chitosan: isotherm, kinetic and thermodynamic analysis, J. Hazard. Mater., 152(1) (2008) 337–346.
  31. B. Doczekalska, K. Kusmierek, A. Swiatkowski, M. Bartkowiak, Adsorption of 2,4-dichlorophenoxyacetic acid and 4-chloro-2-metylphenoxyacetic acid onto activated carbons derived from various lignocellulosic materials, J. Environ. Sci. Health B., 53(5) (2018) 290–297.
  32. Q. Li, J. Sun, T. Ren, L. Guo, Z. Yang, Q. Yang, H. Chen, Adsorption mechanism of 2,4-dichlorophenoxyacetic acid onto nitric acid modified activated carbon fiber, Environ. Technol., 39(7) (2017) 895–906.
  33. M.A. Lelifajri, S. Nawi, S. Sabar, W.I. Nawawi, Preparation of immobilized activated carbon-polyvinyl alcohol composite for the adsorptive removal of 2,4-dichlorophenoxyacetic acid, J. Water Process Eng., 25 (2018) 269–277.
  34. B.H. Hameed, Equilibrium and kinetic studies of methyl violet sorption by agricultural waste, J. Hazard. Mater., 154(1–3) (2008) 204–212.
  35. I. Langmuir, The adsorption of gases on plane surfaces of glass, mica and platinum, J. Am. Chem. Soc., 40 (1918) 1361–1368.
  36. T.E. Khalil, A.E. Dissouky, S. Rizk, Equilibrium and kinetic studies on Pb2+, Cd2+, Cu2+ and Ni2+ adsorption from aqueous solution by Resin 2, 2’- (ethylenedithio)diethanol immobilized amberlite XAD-16 (EDTDE-AXAD-16) with chlorosulphonic acid, J. Mol. Liq., 219 (2016) 533–546.
  37. I.A.W. Tan, A.L. Ahmad, B.H. Hameed, Adsorption isotherms, kinetics, thermodynamics and desorption studies of 2,4,6-trichlorophenol on oil palm empty fruit bunch-based activated carbon, J. Hazard. Mater., 164(2–3) (2009) 473–482.
  38. M. Rafatullah, O. Sulaiman, R. Hashim, A. Ahmad, Adsorption of copper (II), chromium (III), nickel (II) and lead (II) ions from aqueous solutions by Meranti sawdust, J. Hazard. Mater., 170(2–3) (2009) 969–977.
  39. R.L. Liu, Y. Liu, X.Y. Zhou, Z.Q. Zhang, J. Zhang, F.Q. Dang, Biomass-derived highly porous functional carbon fabricated by using a free-standing template for efficient removal of methylene blue, Bioresour. Technol., 154 (2014) 138–147.
  40. A.I. Adeogun, R.B. Balakrishnan, Kinetics, isothermal and thermodynamics studies of electro coagulation removal of basic dye Rhodamine B from aqueous solution using steel electrodes, Appl. Water Sci., 7(4) (2017) 1711–1723.
  41. S. Sadaf, H.N. Bhatti, S. Ali, K. Rehman, Removal of Indosol Turquoise FBL dye from aqueous solution by bagasse, a low cost agricultural waste: batch and column study, Desal. Water Treat., 52(1–3) (2014) 184–198.
  42. C. Solisio, S. Al Arni, A. Converti, Adsorption of inorganic mercury from aqueous solutions onto dry biomass of chlorella vulgaris: Kinetic and isotherm study, Environ. Technol., 40(5) (2017) 1–9.
  43. A.M.M. Vargas, A.L. Cazetta, M.H. Kunita, T.L. Silva, V.C. Almeida, Adsorption of methylene blue on activated carbon produced from flamboyant pods (Delonix regia): Study of adsorption isotherms and kinetic models, Chem. Eng. J., 168 (2011) 722–730.
  44. A.B. Perez-Marin, V.M. Zapata, J.F. Ortuno, M. Aguilar, J. Saes, M. Llorens, Removal of cadmium from aqueous solutions by adsorption onto orange waste, J. Hazard. Mater., 139(1) (2007) 122–131.
  45. T. Zheng, Q. Wang, Z. Shi, Z. Zhang, Y. Ma, Microwave regeneration of spent activated carbon for the treatment of ester-containing wastewater, RSC Adv., 6(65) (2016) 60815–60825.
  46. A. Alahabadi, G. Moussavi, Preparation, characterization and atrazine adsorption potential of mesoporous carbonate-induced activated biochar (CAB) from Calligonum comosum biomass: Parametric experiments and kinetics, equilibrium and thermodynamic modelling, J. Mol. Liq., 242 (2016) 40–52.
  47. D. Banerjee, U. Sarkar, S. Chakraborty, D. Roy, Removal of a cationic bisbiguanide using functionalized activated carbons (FACs), Process Saf. Environ., 92(6) (2013) 957–972.
  48. L.S. Rocha, A. Almeida, C. Nunes, B. Henriques, M.A. Coimbra, C.B. Lopes, C.M. Silva, A.C. Duarte, E. Pereira, Simple and effective chitosan based films for the removal of Hg from waters: Equilibrium, kinetic and ionic competition, Chem. Eng. J., 300 (2016) 217–229.
  49. R.M.C. Viegas, M. Campinas, H. Costa, M.J. Rosa, How do the HSDM and Boyd’s model compare for estimating intra particle diffusion coefficients in adsorption processes, Adsorption, 20(5–6) (2014) 737–746.
  50. E.G. Deze, S.K. Papageorgiou, E.P. Favvas, F.K. Katsaros, Porous alginate aerogel beads for effective and rapid heavy metal sorption from aqueous solutions: Effect of porosity in Cu2+ and Cd2+ ion sorption, Chem. Eng. J., 209 (2012) 537–546.
  51. G.F. Malash, M.I. El-Khaiary, Piecewise linear regression: A statistical method for the analysis of experimental adsorption data by the intra particle diffusion models, Chem. Eng. J., 163(3) (2010) 256–263.
  52. V.K. Gupta, A. Rastogi, Sorption and desorption studies of chromium (VI) from nonviable cyanobacterium Nostoc muscorum biomass, J. Hazard. Mater., 154(1–3) (2008) 347–354.