References

  1. E. Longe, M. Balogun, Groundwater quality assessment near a municipal landfill, Lagos, Nigeria, Res. J. Appl. Sci. Eng. Technol., 2 (2010) 39–44.
  2. M. Vahabian, Y. Hassanzadeh, S. Marofi, Assessment of landfill leachate in semi-arid climate and its impact on the groundwater quality case study, Hamedan, Iran, Environ. Monit. Assess., 191 (2019) 109.
  3. S.N.F. Zakaria, H.A. Aziz, Characteristic of leachate at Alor Pongsu Landfill Site, Perak, Malaysia: a comparative study, IOP Conf. Ser.: Earth. Environ. Sci., 1 (2018) 012–013.
  4. A. Johari, H. Alkali, H. Hashim, S.I. Ahmed, R. Mat, Municipal solid waste management and potential revenue from recycling in Malaysia, Mod. Appl. Sci., 8 (2014) 37.
  5. P. Agamuthu, S.N.A. AL–Abdali, Physico-chemical treatment of Bukit Tagar sanitary landfill leachate using P-Floc775 and ferric chloride, Malaysian J. Sci., 28 (2009) 187–195.
  6. L.A. Manaf, M.A.A. Samah, N.I.M. Zukki, Municipal solid waste management in Malaysia: practices and challenges, Waste Manage., 29 (2009) 2902–2906.
  7. M. Hussein, K. Yoneda, Z.M. Zaki, A. Amir, Leachate characterizations and pollution indices of active and closed unlined landfills in Malaysia, Environ. Technol. Manage., 12 (2019) 100–232.
  8. Y. Moh, A.M. Latifah, Solid waste management transformation and future challenges of source separation and recycling practice in Malaysia, Resour. Conserv. Recycl., 116 (2017) 1–14.
  9. S.H. Fauziah, P. Agamuthu, Trends in sustainable landfilling in Malaysia, a developing country, Waste Manage. Res., 30 (2012) 656–663.
  10. H.A. Aziz, S.F. Ramli, Recent development in sanitary landfilling and landfill leachate treatment in Malaysia, Int. J. Environ. Eng., 934 (2018) 201–229.
  11. M.A. Kamaruddin, M.S. Yusoff, H.A. Aziz, N.K. Basri, Removal of COD, ammoniacal nitrogen and color from stabilized landfill leachate by anaerobic organism, Appl. Water Sci., 3 (2013) 359–366.
  12. N.A. Zainol, H.A. Aziz, M.S. Yusoff, Characterization of leachate from Kuala Sepetang and Kulim landfills: a comparative study, Energy Environ. Res., 2 (2012) 45.
  13. N.H. Adam, M.S. Yusoff, H.A. Aziz, Biodegradability of semiaerobic leachate, AIP Conf. Proc., 1892 (2017) 040–010.
  14. A. Nikolaou, A. Giannis, E. Gidarakos, Comparative studies of aerobic and anaerobic treatment of MSW organic fraction in landfill bioreactors, Environ. Technol., 31 (2010) 1381–1389.
  15. S.Q. Aziz, H.A. Aziz, M.S. Yusoff, M.J. Bashir, M. Umar, Leachate characterization in semi-aerobic and anaerobic sanitary landfills: a comparative study, J. Environ. Manage., 91 (2010) 2608–2614.
  16. J.S. Guo, A.A. Abbas, Y.P. Chen, Z.P. Liu, F. Fang, P. Chen, Treatment of landfill leachate using a combined stripping, Fenton, SBR, and coagulation process, J. Hazard. Mater., 178 (2010) 699–705.
  17. M.A. Kamaruddin, M.S. Yusoff, H.A. Aziz, Y.T. Hung, Sustainable treatment of landfill leachate, Appl. Water Sci., 52 (2015) 113–126.
  18. J. Faitli, T. Magyar, A. Erdélyi, A. Murányi, Characterization of thermal properties of municipal solid waste landfills, Waste Manage., 36 (2015) 213–221.
  19. P. Kjeldsen, M.A. Barlaz, A.P. Rooker, A. Baun, A. Ledin, T.H. Christensen, Present and long-term composition of MSW landfill leachate: a review, Environ. Sci. Technol., 324 (2002) 297–336.
  20. G. Tchobanoglous, H. Theisen, S. Vigil, Integrated Solid Waste Management, McGraw-Hill, New York, 1993.
  21. Z. Salem, K. Hamouri, R. Djemaa, K. Allia, Evaluation of landfill leachate pollution and treatment, Desalination, 22 (2008) 108–114.
  22. S. Ghosh, S.E. Hasan, Sanitary Landfill, Environ. Eng. Geol., 3 (2010) 22.
  23. R. Cossu, R. Raga, Test methods for assessing the biological stability of biodegradable waste, Waste Manage., 28 (2008) 381–388.
  24. D. Bove, S. Merello, D. Frumento, S.A. Arni, B. Aliakbarian, A. Converti, A critical review of biological processes and technologies for landfill leachate treatment, Chem. Eng. Technol., 38 (2015) 2115–2126.
  25. P.T. Williams, Waste Treatment and Disposal, John Wiley & Sons, Chichester, UK, 2005.
  26. N. Aghamohammadi, A.A. Hamidi, I.M. Hasnain, A. Zinatizadeh, E.S.H. Nasr, S. Ghafari, Performance of a powdered activated carbon (PAC) augmented activated sludge process treating semi-aerobic leachate, Int. J. Environ. Res., 1 (2007) 96–103.
  27. M.A. Kamaruddin, M.S. Yusoff, H.A. Aziz, R. Alrozi, Current status of Pulau Burung sanitary landfill leachate treatment, Penang Malaysia, AIP Conf. Proc., 1774 (2016) 030014.
  28. H.A. Aziz, M.S. Yusoff, M.N. Adlan, N.H. Adnan, S. Alias, Physico-chemical removal of iron from semi-aerobic landfill leachate by limestone filter, Waste Manage., 244 (2004) 353–358.
  29. S.H. Fauziah, P. Agamuthu, Municipal solid waste management in Malaysia: strategies in reducing the dependency on landfills, Chem. Inf. Model., 53 (2012) 160.
  30. E.S.R.I. Environmental Systems Research Institute, ArcGIS Desktop Help, Geostatis. Anal., (2014) 102.
  31. I. Yusoff, Y. Alias, M. Yusof, M.A. Ashraf, Assessment of pollutants migration at Ampar Tenang landfill site, Selangor, Malaysia, Sci. Asia, 39 (2013) 392–409.
  32. C.O. Akinbile, M.S. Yusoff, A.A. Zuki, Landfill leachate treatment using sub-surface flow constructed wetland by Cyperus haspan, Waste Manage., 32 (2012) 1387–1393.
  33. D. Kumar, B. J. Alappat, Evaluating leachate contamination potential of landfill sites using leachate pollution index, Clean Technol. Environ. Policy, 7 (2005) 190–197.
  34. D. Kumar, B.J. Alappat, Analysis of leachate pollution index and formulation of sub-leachate pollution indices, Waste Manage. Res., 233 (2005) 230–239.
  35. S.N.F. Zakaria, H. Abdul Aziz, A. Amr, S. Salem, Performance of ozone/ZrCl4 oxidation in stabilized landfill leachate treatment, Appl. Mech. Mater., 80 (2015) 501–506.
  36. S. Budi, B.A. Suliasih, M.S. Othman, L.Y. Heng, S. Surif, Toxicity identification evaluation of landfill leachate using fish, prawn and seed plant, Waste Manage., 55 (2016) 231–237.
  37. M.A. Jumaah, M.R. Othman, M.R. Usop, Characterization of leachate from Jeram sanitary landfill Malaysia, Int. J. Chem. Tech. Res., 9 (2016) 571–574.
  38. F.D.M.S. Nur, U.K.H. KU, Leachate characterization from a closed landfill in Air Hitam, Puchong, Malaysia, J. Anal. Sci., 17 (2013) 24–29.
  39. A. Shehzad, M.J. Bashir, S. Sethupathi, J.W. Lim, Simultaneous removal of organic and inorganic pollutants from landfill leachate using sea mango derived activated carbon via microwave induced activation, Int. J. Chem. Reactor Eng., 145 (2016) 991–1001.
  40. B. Adhikari, S.N. Khanal, Qualitative study of landfill leachate from different ages of landfill sites of various countries including Nepal, J. Environ. Sci. Technol., 9 (2015) 2319–2399.
  41. C.O. Akinbile, M.S. Yusoff, L.M. Shian, Leachate characterization and phytoremediation using water hyacinth Eichorrnia crassipes in Pulau Burung, Malaysia, Biorem. J., 16 (2012) 9–18.
  42. A. Sq, A. Ha, B. Mjk, Assessment of various tropical municipal landfill leachate characteristics and treatment opportunities, Global Nest J., 17 (2015) 1-13.
  43. N.A. Zainol, H.A. Aziz, N. Ibrahim, Treatment of Kulim and Kuala Sepetang landfills leachates in Malaysia using polyaluminium chloride (PACl), Res. J. Chem. Sci., 3 (2013) 606.
  44. M. Zin, N. Shaylinda, H. Abdul aziz, M. Adlan, A. Ariffin, Characterization of leachate at Matang landfill site, Perak, Malaysia, Acad. J. Sci., 1 (2012) 317–322.
  45. N.M. Azme, M.F. Murshed, Treatability of stabilize landfill leachate by using pressmud ash as an adsorbent, IOP Conf. Ser. Earth Environ. Sci., 140 (2018) 012–041.
  46. A. Shehzad, M.J. Bashir, S. Sethupathi, J.W. Lim, M. Younas, Bioelectrochemical system for landfill leachate treatment challenges, opportunities and recommendations, Geosyst. Eng., 196 (2016) 337–345.
  47. Z.J. Yong, M.J. Bashir, C.A. Ng, S. Sethupathi, J.W. Lim, A sequential treatment of intermediate tropical landfill leachate using a sequencing batch reactor (SBR) and coagulation, J. Environ. Manage., 205 (2018) 244–252.
  48. E.S. Ameen, S.A. Muyibi, M.I. Abdulkarim, Microfiltration of pretreated sanitary landfill leachate, Environmentalist, 31 (2011) 208–215.
  49. C.U. Emenike, S.H. Fauziah, P. Agamuthu, Characterization and toxicological evaluation of leachate from closed sanitary landfill, Waste Manage. Res., 30 (2012) 888–897.
  50. A.R. Ishak, S. Mohamad, T.K. Soo, F.S. Hamid, Leachate and surface water characterization and heavy metal health risk on cockles in Kuala Selangor, Proc. Soc. Behav. Sci., 222 (2016) 263–271.
  51. E. Olisa, N. Sapari, A. Malakahmad, E.H. Ezechi, A. Riahi, I.U. Salihi, K.U. Orji, Evaluation of leachate characteristics from different leachate ponds in a semi-aerobic landfill, Int. J. Eng. Res., 22 (2016) 68–82.
  52. W. Razarinah, M.N. Zalina, N. Abdullah, Utilization of the white-rot fungus, Trametes menziesii for landfill leachate treatment, Sains Malaysiana, 44 (2015) 309–316.
  53. S.N.F. Zakaria, H.A. Aziz, Influence of dosage, pH and contact time in stabilized landfill leachate treatment using ozone/ zirconium tetrachloride catalytic oxidation, AIP Conf. Proc., 18 (2017) 040–030.
  54. H.A. Aziz, Y.C. Yii, S.F.F. Syed Zainal, S.F. Ramli, C.O. Akinbile, Effects of using Tamarindus indica seeds as a natural coagulant aid in landfill leachate treatment, Global Nest J., 20 (2018) 373–380.
  55. S.F.F.S. Zainal, H.A. Aziz, Potential of tin (IV) chloride for treatment in Alor Pongsu as stabilized landfill leachate, AIP Conf. Proc., 18 (2017) 040–003.
  56. M.Z.N. Shaylinda, A.A. Hamidi, N.A. Mohd, A. Ariffin, D. Irvan, Z.A.M. Hazreek, Z.M. Nizam, Optimization of composite coagulant made from polyferric chloride and tapioca starch in landfill leachate treatment, J. Phys. Conf. Ser., 99 (2018) 012–019.
  57. Y.M.N.Z. Ismail, N. Ngadi, M.H. Hassim, M.J. Kamaruddin, A. Johari, M.A.A. Aziz, Preparation of activated carbon from oil palm empty fruit bunch by physical activation for treatment of landfill leachate, IOP Conf. Ser. Mater. Sci. Eng., 45 (2018) 012–036.
  58. H. Aziz, N. Rahim, S. Ramli, M. Alazaiza, F. Omar, Y.T. Hung, Potential use of Dimocarpus longan seeds as a flocculant in landfill leachate treatment, Water, 10 (2018) 1672.
  59. A. Shehzad, M.J. Bashir, S. Sethupathi, J.W. Lim, An insight into the remediation of highly contaminated landfill leachate using sea mango based activated bio-char optimization, isothermal and kinetic studies, Desalin. Water Treat., 57 (2016) 22244–22257.
  60. S. PV, S. TG, Characteristics of a municipal solid waste landfill leachate, IGC Indian Geotechnical Conf., (2014).
  61. C. Ray, G. Student, P.C. Chan, Heavy metals in landfill leachate, Int. J. Environ., 27 (1986) 225–237.
  62. S.S. Kale, A.K. Kadam, S. Kumar, N.J. Pawar, Evaluating pollution potential of leachate from landfill site from the Pune metropolitan city and its impact on shallow basaltic aquifers, Environ. Monit. Assess., 16 (2010) 327–346.
  63. S. Singh, N.J. Raju, W. Gossel, P. Wycisk, Assessment of pollution potential of leachate from the municipal solid waste disposal site and its impact on groundwater quality, Varanasi environs, India, Arab. J. Geosci., 9 (2016) 131.
  64. S. De, S. Maiti, T. Hazra, A. Debsarkar, A. Dutta, Leachate characterization and identification of dominant pollutants using leachate pollution index for an uncontrolled landfill site, J. Environ. Sci. Manage., 22 (2016) 177–186.
  65. L. Salami, O. Fadayini, R.J. Patinvoh, O. Koleola, Evaluation of leachate contamination potential of Lagos dumpsites using leachate pollution index, J. Appl. Sci. Technol., 5 (2015) 48–59.
  66. M.A. Ashraf, I. Yusoff, M. Yusof, Y. Alias, Study of contaminant transport at an open-tipping waste disposal site, Environ. Sci. Pollut. Res., 20 (2013) 4689–4710.
  67. S.N.S. Ismail, C.F. Ishak, M.A.A. Samah, E.M. Hatta, A.S.A. Wahab, Soil contamination from non-sanitary waste landfill in Langat water catchment area, Malaysia, J. Sci. Res. Rep., 76 (2015) 480–493.
  68. M.O. Ofomola, O.S. Umayah, O. Akpoyibo, Contamination assessment of dumpsites in Ughelli, Nigeria using the leachate pollution index method, J. Appl. Sci. Environ. Manage., 21 (2017) 77–84.
  69. M. Umar, H.A. Aziz, M.S. Yusoff, Variability of parameters involved in leachate pollution index and determination of LPI from four landfills in Malaysia, Int. J. Chem. Eng., 2010 (2010) 1–6.
  70. B.G.N. Sewwandi, K. Takahiro, K. Kawamoto, S.H.O.I. C. Hamamoto, S.Asamoto, H. Sato, Evaluation of leachate contamination potential of municipal solid waste dumpsites in Sri Lanka using leachate pollution index, Proc. Int. Waste Manage., 23 (2013) 113–124.
  71. A. Godwin, E. Oghenekohwiroro, Leachate characterization and leachate pollution index from landfill dump sites in Warri Metropolis, Nigeria, Int. Lett. Natural Sci., 57 (2016) 41–48.
  72. M.A. Kamaruddin, M.S. Yusoff, L.M. Rui, A.M. Isa, M.H. Zawawi, R. Alrozi, An overview of municipal solid waste management and landfill leachate treatment: Malaysia and Asian perspectives, Environ. Sci. Pollut. Res., 24 (2017) 26988–27020.
  73. H.A. Aziz, Control and Treatment of Landfill Leachate for Sanitary Waste Disposal, IGI Global, USA, 2015.