1. J. Berrueta, L. Castrillón, Anaerobic treatment of leachates in UASB reactors, J. Chem. Technol. Biotechnol., 54 (1992) 33–37.
  2. J.R. Iglesias, L.C. Pelaez, E.M. Maison, H.S. Andres, Biomethanization of municipal solid waste in a pilot plant, Water Res., 34 (2000) 447–454.
  3. Z. Dabaghian, M. Peyravi, M. Jahanshahi, A.S. Rad, Potential of advanced nano‐structured membranes for landfill leachate treatment: a review, Chem. Biol. Eng. Rev., 5 (2018) 119–138.
  4. A. Amokrane, C. Comel, J. Veron, Landfill leachates pretreatment by coagulation–flocculation, Water Res., 31 (1997) 2775–2782.
  5. X.Z. Li, Q.L. Zhao, X.D. Hao, Ammonium removal from landfill leachate by chemical precipitation, Waste Manage., 19 (1999) 409–415.
  6. F. Kargı, M.Y. Pamukoglu, Adsorbent supplemented biological treatment of pre-treated landfill leachate by fed-batch operation, Bioresour. Technol., 94 (2004) 285–291.
  7. A.A. Halim, H.A. Aziz, M.A.M. Johari, K.S. Ariffin, Comparison study of ammonia and COD adsorption on zeolite, activated carbon and composite materials in landfill leachate treatment, Desalination, 262 (2010) 31–35.
  8. Z. Daud, S.E.A. Rahman, H. Awang, M.H. Abubakar, M.B. Ridzuan, H.A. Tajarudin, Utilization of waste paper sludge as an alternative adsorbent for the adsorption of ammonia nitrogen and COD in stabilized landfill leachate, Int. J. Integr. Eng., 10 (2018) 6–10.
  9. X.Z. Li, Q.L. Zhao, MAP precipitation from landfill leachate and seawater bittern waste, Environ. Technol., 23 (2002) 989–1000.
  10. Z. Daud, H.A. Aziz, M.N. Adlan, Treatment of semiaerobic leachate by combined coagulation-flocculation and filtration method, J. Environ. Res. Dev., 2 (2007) 101–110.
  11. S.-J. Park, B.-J. Kim, Ammonia removal of activated carbon fibers produced by oxyfluorination, J. Colloid Interface Sci., 291 (2005) 597–599.
  12. N.F. Gao, S. Kume, K. Watari, Zeolite–carbon composites prepared from industrial wastes: (II) evaluation of the adaptability as environmental materials, Mater. Sci. Eng., A, 404 (2005) 274–280.
  13. Y. Ono, T. Yashima, Eds., Science and Engineering of Zeolite, Kodansha Scientific Publishing, Tokyo, 2000.
  14. B. Okolo, C. Park, M.A. Keane, Interaction of phenol and chlorophenols with activated carbon and synthetic zeolites in aqueous media, J. Colloid Interface Sci., 226 (2000) 308–317.
  15. A.A. Halim, H.A. Aziz, M.A.M. Johari, K.S. Ariffin, Landfill Leachate Treatment using Combination of Hydrophobic– Hydrophilic and Low Cost Adsorption Materials as a Single Media, Proceeding USM Malaysia, 2006.
  16. N.S. Alharbi, B.W. Hu, T. Hayat, S.O. Rabah, A. Alsaedi, L. Zhuang, X.K. Wang, Efficient elimination of environmental pollutants through sorption-reduction and photocatalytic degradation using nanomaterials, Front. Chem. Sci. Eng., 14 (2020) 1124–1135.
  17. X.L. Liu, R. Ma, L. Zhuang, B.W. Hu, J.R. Chen, X.Y. Liu, X.K. Wang, Recent developments of doped g-C3N4 photocatalysts for the degradation of organic pollutants, Crit. Rev. Env. Sci. Technol., 0 (2020)1–40,
  18. L.W.M. Zailani, N.S.M. Zin, Characterization of Leachate at Simpang Renggam Landfill Site, Johor, Malaysia, IOP Conf. Ser.: Earth Environ. Sci., 1049 (2018) 012040.
  19. APHA, Standard Methods for the Examination of Water and Wastewater, American Public Health Association, Washington DC, USA, 2012.
  20. H. Alvarez‐Vazquez, B. Jefferson, S.J. Judd, Membrane bioreactors vs conventional biological treatment of landfill leachate: a brief review, J. Chem. Technol. Biotechnol., 79 (2004) 1043–1049.
  21. A.A. Halim, H.A. Aziz, M.A.M. Johari, K.S. Ariffin, Ammoniacal Nitrogen and COD Removal from Semi-aerobic Landfill Leachate using Carbon-Mineral Composite Adsorbent, Proceeding Indonesia, 2008, pp. 722–728.
  22. M.A. Rosli, Z. Daud, H. Awang, N.A. Ab Aziz, M.B. Ridzuan, M.H. Abubakar, H.A. Tajarudin, Adsorption efficiency and isotherms of COD and color using limestone and zeolite adsorbents, Int. J. Integr. Eng., 10 (2018) 8–13.
  23. Z. Daud, A. Detho, M.A. Rosli, M.H. Abubakar, K.A. Samo, N.F.M. Rais, A.A. Halim, H.A. Tajarudin, Ammoniacal nitrogen and COD removal from stabilized landfill leachate using granular activated carbon and green mussel (Perna viridis) shell powder as a composite adsorbent, Desal. Water Treat., 192 (2020) 111–117.
  24. M.A. Rosli, Z. Daud, M.B. Ridzuan, N.A. Abd Aziz, H.B. Awang, A. Oyekanmi Adeleke, K. Hossain, N. Ismail, Equilibrium isotherm and kinetic study of the adsorption of organic pollutants of leachate by using micro peat-activated carbon composite media, Desal. Water Treat., 160 (2019) 185–192.
  25. A. Detho, Z. Daud, M.A. Rosli, M.B. Ridzuan, H. Awang, M.A. Kamaruddin, H.A. Tajarudin, A.A. Halim, COD and ammoniacal nitrogen reduction from stabilized landfill leachate using carbon mineral composite adsorbent, Desal. Water Treat., 210 (2021) 143–151.
  26. I. Langmuir, The constitution and fundamental properties of solids and liquids. Part I. Solids, J. Am. Chem. Soc., 38 (1916) 2221–2295.
  27. P.S. Kumar, K. Kirthika, Equilibrium and kinetic study of adsorption of nickel from aqueous solution onto bael tree leaf powder, J. Eng. Sci. Technol., 4 (2009) 351–363.
  28. H.M.F. Freundlich, Over the adsorption in solution, J. Phys. Chem., 57 (1906) 1100–1107.
  29. H.A. Abba, L. Sani, M.H. Abubakar, Z. Daud, Novel admixture for improvement of foundations on tropical expansive soils, Int. J. Integr. Eng., 9 (2017) 44–49.
  30. T.A. Kurniawan, W.H. Lo, G.Y. Chan, Physico-chemical treatments for removal of recalcitrant contaminants from landfill leachate, J. Hazard. Mater., 129 (2006) 80–100.