1. H. Baker, F. Khalili, Analysis of the removal of lead(II) from aqueous solutions by adsorption onto insolubilized humic acid: temperature and pH dependence, Anal. Chim. Acta, 516 (2004) 179–186.
  2. S.I. Siddiqui, S.A. Chaudhry, Nanohybrid composite Fe2O3-ZrO2/BC for inhibiting the growth of bacteria and adsorptive removal of arsenic and dyes from water, J. Cleaner Prod., 223 (2019) 849–868.
  3. F.-C. Huang, Y.-L. Han, C.-K. Lee, H.-P. Chao, Removal of cationic and oxyanionic heavy metals from water using hexadecyltrimethylammonium-bromide-modified zeolite, Desal. Water Treat., 57 (2016) 17870–17879.
  4. H. Baker, Characterization for the interaction of nickel(II) and copper(II) from aqueous solutions with natural silicate minerals, Desalination, 244 (2009) 48–58.
  5. U.M. Aliyu, U. Shuaibu, U.O. Aroke, O.A. Osha, Removal of Pb2+ onto HDTMA-Br modified kaolinite clay as function of pH: batch sorption, isotherms and kinetics, J. Environ. Sci. Toxicol. Food. Technol., 10 (2016) 25–34.
  6. H.R. Rafiei, M. Shirvani, O.A. Ogunseitan, Removal of lead from aqueous solutions by a poly(acrylic acid)/bentonite nanocomposite, Appl. Water Sci., 6 (2016) 331–338.
  7. A. Azimi, A. Azari, M. Rezakazemi, M. Ansarpour, Removal of heavy metals from industrial wastewaters: a review, ChemBioEng Rev., 4 (2017) 37–59.
  8. H. Baker, H.A. Halim, Removal of nickel ions from aqueous solutions by using insolubilized humic acid. Effect of pH and temperature, Asian J. Chem., 19 (2007) 233–245.
  9. M.W. Amer, F.I. Khalili, A.M. Awwad, Adsorption of lead, zinc and cadmium ions on polyphosphate-modified kaolinite clay, J. Environ. Chem. Ecotoxicol., 2 (2010) 1–8.
  10. H. Baker, A study of the binding strength and thermodynamic aspects of cadmium and lead ions with natural silicate minerals in aqueous solutions, Desalination, 242 (2009) 115–127.
  11. S. Veli, B. Alyüz, Adsorption of copper and zinc from aqueous solutions by using natural clay, J. Hazard. Mater., 149 (2007) 226–233.
  12. H. Chen, A. Wang, Kinetic and isothermal studies of lead ion adsorption onto palygorskite clay, J. Colloid Interface Sci., 307 (2007) 309–316.
  13. H.M. Baker, Studies of oxyanion removal from aqueous solution using zeolite and HDTMA-Br surface modified organo-zeolite, Am. Chem. Sci. J., 11 (2016) 1–14.
  14. H.M. Baker, R.A. Ghanem, Study on removal behavior and separation efficiency of naturally occurring bentonite for sulfate from water by continuous column and batch methods, Eur. J. Chem., 6 (2015) 12–20.
  15. F.I. Khalili, N.H. Salameh, M.M. Shaybe, Sorption of uranium(VI) and thorium(IV) by Jordanian bentonite, J. Chem., 2013 (2013) 13 p,
  16. N. Caballero, P.C. Ozuna, M. Monteiro, Kinetic analysis of lead removal by natural hydroxyapatite from aqueous solution in high concentration, Mater. Res., 22 (2019) 1–7, https://doi. org/10.1590/1980-5373-mr-2018-0859.
  17. F.A. Alhnafat, Removal of lead(II) zinc(II) and cadmium(II) by insolubilized humic acid from tafila soil in Jordan, Master Thesis, The University of Jordan, 2014.
  18. H. Chen, R. Berndtsson, M.G. Ma, K. Zhu, Characterization of insolubilized humic acid and its sorption behaviors, Environ. Geol., 57 (2009) 1847–1853.
  19. C.T. Onwordi, C.C. Uche, A.E. Ameh, L.F. Petrik Comparative study of the adsorption capacity of lead(II) ions onto bean husk and fish scale from aqueous solution, J. Water Reuse Desal., 9 (2019) 249–262.
  20. J. He, G. Vidali, Application of a diffusion-desorption rate equation model in astrochemistry, Faraday Discuss., 168 (2014) 517–532.
  21. H.M. Baker, Evaluation of Jordanian treated natural zeolite for the uptake of p-nitrophenol from wastewater by continuous column method, Desal. Water Treat., 52 (2014) 3290–3300.
  22. H.M. Baker, H. Fraij, Principles of interaction of ammonium ion with natural Jordanian deposits: analysis of uptake studies, Desalination, 251 (2010) 41–46.
  23. S.P. Mishra, Adsorption–desorption of heavy metal ions, Curr. Sci., 107 (2014) 601–612.