1. L. Gomes, E.P. Troiani, G.R.P. Malpass, J. Nozaki, Opuntia ficus indica as a polyelectrolyte source for the treatment of tannery wastewater, Desal. Water Treat., 57 (2016) 10181–10187.
  2. B.C. Sarker, B. Basak, M.D.S. Islam, Chromium effects of tannery waste water toxicity strength reduction and alternative, Int. J. Agron. Agric. Res., 3 (2013) 23–35.
  3. C.D. Dorman, K.A. Brenneman, F.S. Melanie, K.L. Miller, A.R. James, M.W. Marshall, P.M.D. Foster, Fertility and developmental neurotoxicity effects of inhaled hydrogen sulfide in Sprague-Dawley rats, Neurotoxicol. Teratol., 22 (2000) 71–84.
  4. A. Omor, Z. Rais, K. El Rhazi, M. Merzouki, K. El Karrach, N. Elallaoui, M. Taleb, Optimization of the method wastewater treatment of unit bovine hides’s unhairing liming, J. Mater. Environ. Sci., 8 (2017) 1235–1246.
  5. S. Elabbas, N. Ouazzani, L. Mandi, F. Berrekhis, M. Perdicakis, S. Pontvianne, M.-N. Pons, F. Lapicque, J.-P. Leclerc, Treatment of highly concentrated tannery wastewater using electrocoagulation: influence of the quality of aluminium used for the electrode, J. Hazard. Mater., 319 (2016) 69–77.
  6. A. Abid, A. Zouhri, A. Ider, Utilisation d’un nouveau biofloculant extrait de cactus marocain dans le traitement des rejets chargés de chrome(VI) par le procédé de coagulation floculation, Afr. Sci. Rev. Int. Sci. Technol., 5 (2009) 25–35.
  7. A.M.A. Elmagd, M.S. Mahmoud, Tannery wastewater treatment using activated sludge process system (Lab Scale Modeling), Int. J. Eng. Tech. Res., 2 (2014) 21–28.
  8. K. Elkarrach, M. Merzouki, O. Laidi, A. Omor, M. Benlemlih, Treatment of tannery effluents of Fez city by the sequential batch reactor, Eur. J. Sci. Res., 150 (2018) 334–348.
  9. K. Elkarrach, M. Merzouki, O. Laidi, S. Biyada, A. Omor, M. Benlemlih, Sequencing batch reactor: inexpensive and efficient treatment for tannery effluents of Fez city in Morocco, Desal. Water Treat., 202 (2020) 71–77.
  10. F. Chen, X. Li, Z. Luo, M. Jing, Q. Zhu, S. Zhan, Treatment of tannery wastewater using a combined UASB (2 stage)- ozonation-BAF system, Desal. Water Treat., 116 (2018) 277–283.
  11. G.M. Ayoub, A. Hamzeh, L. Semerjian, Post treatment of tannery wastewater using lime/bittern coagulation and activated carbon adsorption, Desalination, 273 (2011) 359–365.
  12. J. Rodier, Analysis of Water – Fresh Water, Wastewater, Seawater, 9th ed., Dunod, Paris, 2009.
  13. State Secretariat for Water and the Environment, Department of the Environment, Moroccan Laws Relating to the Environment, Official Bulletin, N°6199–18, 2018.
  14. A.H. Nielsen, P. Lens, J. Vollertsen, T. Hvitved-Jacobsen, Sulfide-iron interactions in domestic wastewater from a gravity sewer, J. Water Res., 39 (2005) 2747–2755.
  15. H. Ge, L. Zhang, D.J. Batstone, J. Keller, Z. Yuan, Impact of iron salt dosage to sewers on downstream anaerobic sludge digesters: sulfide control and methane production, J. Environ. Eng., 139 (2013) 594–601.
  16. P.H. Nielsen, K. Keiding, Disintegration of activated sludge flocs in presence of sulfide, J. Water Res., 32 (1998) 313–320.
  17. A.H.M. Veeken, L. Akoto, P.L.W. Hulshoff, J. Weijma, Control of the sulfide concentration for optimal zinc sulfide precipitation in a continuously stirred tank reactor, Water Res., 37 (2003) 3709–3717.
  18. A. Jin, T. Pasuta, C. Piyarat, Integrated treatment scheme for rubber thread wastewater: sulfide precipitation and biological processes, J. Hazard. Mater., 141 (2007) 1–7.
  19. R.E. Eckford, P.M. Fedorak, Planktonic nitrate-reducing bacteria and sulfate-reducing bacteria in some western Canadian oil field waters, J. Ind. Microbiol. Biotechnol., 29 (2002) 83–92.
  20. B.K. Acharya, S. Mohana, D. Madamwar, Anaerobic treatment of distillery spent wash – a study on upflow anaerobic fixed film bioreactor, Bioresour. Technol., 99 (2008) 4621–4626.
  21. D.I.B. Ortiz, M.Á.M. Jardines, F.M.C. López, A.C. Texier, Biological ammonium and sulfide oxidation in a nitrifying sequencing batch reactor: kinetic and microbial population dynamics assessments, Chemosphere, 253 (2020) 126637, doi: 10.1016/j.chemosphere.2020.126637.
  22. J. Kotás, Z. Stasicka, Chromium occurrence in the environment and methods of its speciation, Environ. Pollut., 107 (2000) 263–283.
  23. S.Y. Kang, J.U. Lee, K.W. Kim, Biosorption of Cr(III) and Cr(VI) onto the cell surface of Pseudomonas aeruginosa, Biochem. Eng. J., 36 (2007) 54–58.
  24. K. Elkarrach, M. Merzouki, S. Biyada, M. Benlemlih, Bioaugmentation process for the treatment of tannery effluents in Fez, Morocco: an Eco-friendly treatment using novel chromate bacteria, J. Water Process Eng., 38 (2020) 101589, doi: 10.1016/j.jwpe.2020.101589.
  25. S. Jallouli, A. Wali, A. Buonerba, T. Zarra, V. Belgiorno, V. Naddeo, M. Ksibi, Efficient and sustainable treatment of tannery wastewater by a sequential electrocoagulation-UV phitolytics process, J. Water Process Eng., 38 (2020) 101642, doi: 10.1016/j.jwpe.2020.101642.
  26. M.C. Pire-Sierra, D.D. Cegarra-Badell, S.J. Carrasquero-Ferrer, N.E. Angulo-Cubillan, A.R. Díaz-Montiel, Nitrogen and COD removal from tannery wastewater using biological and physicochemical treatments, Rev. Fac. Ing., 80 (2016) 63–73.