References

  1. Decision No 1386/2013/EU of the European Parliament and of the Council of 20 November 2013 on a General Union Environment Action Programme to 2020 ‘Living well, within the limits of our planet’, Official Journal of the European Union, L354, 56, 2013, 171–200.
  2. C. Stocks, J. Wood, S. Guy, Minimisation and recycling of spent acid wastes from galvanizing plants, Resour. Conserv. Recy. 444 (2005) 153–166.
  3. M.D. Turan, H.S. Altundoğan, F. Tümen, Recovery of zinc and lead from zinc plant residue, Hydrometallurgy, 75 (2005) 169– 176.
  4. G. Rossini, A.M. Bernardes, Galvanic sludge metals recovery by pyrometallurgical and hydrometallurgical treatment, J. Hazard. Mater., 131 (2006) 210–216.
  5. L. Lupa, P. Negrea, A. Iovi, M. Ciopec, M. Motoc, Zinc oxide obtaining from zinc ash, Rev. Chim. (Bucharest, Rom.), 58 (2007) 1075–1079. [In Romanian]
  6. L. Lupa, A. Iovi, P. Negrea, A. Negrea, G. Szabo, Recovery of zinc and iron from the sludge resulted during thermal zinc coating, Environ. Eng. Manag. J., 5 (2006) 1099–1112.
  7. M.A. Stylianou, D. Kollia, K.-J. Haralambous, V.J. Inglezakis, K.G. Moustakas, M.D. Loizidou, Effect of acid treatment on the removal of heavy metals from sewage sludge, Desalination, 215 (2007) 73–81.
  8. N.C. Shiba, F. Ntuli, Extraction and precipitation of phosphorus from sewage sludge, Waste Manage., 60 (2016) 191–200.
  9. X. Wang, J. Chen, X. Yan, X. Wang, J. Zhang, J. Huang, J. Zhao, Heavy metal chemical extraction from industrial and municipal mixed sludge by ultrasound-assisted citric acid, J. Ind. Eng. Chem., 27 (2015) 368–372.
  10. J. Deng, X. Feng, X. Qiu, Extraction of heavy metal from sewage sludge using ultrasound-assisted nitric acid, Chem. Eng. J., 152 (2009) 177–182.
  11. P.T. de Souza e Silva, N.T. de Mello, M.M.M. Duarte, M.C.B.S.M. Montenegro, A.N. Araújo, B. de Barros Neto, V.L. da Silva, Extraction and recovery of chromium from electroplating sludge, J. Hazard. Mater., 128 (2006) 39–43.
  12. C. Li, F. Xie, Y. Ma, T. Cai, H. Li, Z. Huang, G. Yuan, Multiple heavy metals extraction and recovery from hazardous electroplating sludge waste via ultrasonically enhanced two-stage acid leaching, J. Hazard. Mater., 178 (2010) 823-833.
  13. R. Su, B. Liang, J. Guan, Leaching effects of metal from electroplating sludge under phosphate participation in hydrochloric acid medium, Procedia Environ. Sci., 31 (2010) 361–365.
  14. F. Andreola, L. Barbieri, F. Bondioli, M. Cannio, A.M. Ferrari, I. Lancelloti, Synthesis of chromium containing pigments from chromium galvanic sludges, J. Hazard. Mater., 156 (2008) 466–471.
  15. Y.-C. Kuan, I.-H.Lee, J.-M. Chern, Heavy metal extraction from PCB wastewater treatment sludge by sulfuric acid, J. Hazard. Mater., 177 (2010) 881–886.
  16. F.A.D. Amaral, V.S. dos Santos, A.M. Bernardes, Metals recovery from galvanic sludge by sulfate roasting and thiosulfate leaching, Miner. Eng., 60 (2014) 1–7.
  17. J.D. Chou, C.L. Lin, M.Y. Wey, S.H. Chang, Effect of Cu species on leaching behavior of simulated copper sludge after thermal treatment: ESCA analysis, J. Hazard. Mater., 179 (2010) 1106– 1110.
  18. J.E. Silva, A.P. Paiva, D. Soares, A. Labrincha, F. Castro, Solvent extraction applied to the recovery of heavy metals from galvanic sludge, J. Hazard. Mater., 120 (2005) 113–118.
  19. T. Kinoshita, K. Yamaguchi, S. Akita, S. Nii, F. Kawaizumi, K. Takahashi, Hydrometallurgical recovery of zinc from ashes of automobile tire wastes, Chemosphere, 59 (2005) 1105–1111.
  20. M. Gheju, R. Pode, F. Manea, Comparative heavy metal chemical extraction from anaerobically digested biosolids, Hydrometallurgy, 108 (2011) 115–121.
  21. S.M. Shin, G. Senanayake, J.-S. Sohn, J.-G. Kang, D.-H. Yang, T.-H. Kim, Separation of zinc from spent zinc-carbon batteries by selective leaching with sodium hydroxide, Hydrometallurgy, 96 (2009) 349–353.
  22. F. Xie, T. Cai, Y. Ma, H. Li, C. Li, Recovery of Cu and Fe from Printed Circuit Board waste sludge by ultrasound: Evaluation of industrial application, J. Clean. Prod., 17 (2009) 1494–1498.
  23. F. Cavani, F. Trifirò, A. Vaccari, Hydrotalcite-type anionic clays: Preparation, properties and applications, Catal. Today, 11 (1991) 173–301.
  24. L. Cocheci, P. Barvinschi, R. Pode, E. Popovici, E.M. Seftel, Structural characterization of some Mg/Zn-Al type hydrotalcites prepared for chromate sorption from wastewater, Chem. Bull. “Politehnica” Univ. (Timisoara), 55(1) (2010) 40–45.
  25. J.Q. Jiang, S.M. Ashekuzaman, Preparation and evaluation of layered doublehydroxides (LDHs) for phosphate removal, Desal. Water. Treat., 55 (2015) 836–843.
  26. O.P. Ferreira, O.L. Alves, D.X. Gouveia, A.G. Souza Filho, J.A.C. de Paiva, J.M. Filho, Thermal decomposition and structural reconstruction effect on Mg–Fe-based hydrotalcite compounds, J. Solid State Chem., 177 (2004) 3058–3069.
  27. J. Liu, X. Yue, Y. Yu, Y. Guo, Adsorption of sulfate from natural water on calcined Mg–Fe layered double hydroxides, Desal. Water. Treat., 56 (2015) 274–283.
  28. K.B. Rozov, U. Berner, D.A. Kulik, L.W. Diamond, Solubility and thermodynamic properties of carbonate-bearing hydrotalcite-pyroaurite solid solutions with a 3:1 Mg/(Al+Fe) mole ratio, Clay. Clay Miner., 59 (2011) 215–232.
  29. P. Kumar, R. Agnihotri, K.L. Wasewar, H. Uslu, C.K. Yoo, Status of adsorptive removal of dye from textile industry effluent, Desal. Water. Treat., 50 (2012) 226–244.
  30. Mu. Naushad, Z.A. Alothman, Md.R. Awual, S.M. Alfadul, T. Ahamad, Adsorption of rose Bengal dye from aqueous solution by amberlite Ira-938 resin: kinetics, isotherms, and thermodynamic studies, Desal. Water. Treat., 57 (2016) 13527–13533.
  31. S.M. Twang, M.A.A. Zaini, L.Md. Salleh, M.A.C. Yunus, Mu. Naushad, Potassium hydroxide-treated palm kernel shell sorbents for the efficient removal of methyl violet dyed, Desal. Water. Treat., 84 (2017) 262–270.
  32. A.B. Albadarin, M.N. Collins, Mu. Naushad, S. Shirazian, G. Walker, C. Mangwandi, Activated lignin-chitosan extruded blends for efficient adsorption of methylene blue, Chem. Eng. J., 307 (2017) 264–272.
  33. A.A. Alqadami, Mu. Naushad, M.A. Abdalla, M.R. Khan, Z.A. Alothman, Adsorptive removal of toxic dye using Fe3O4-TSC nanocomposite: Equilibrium, kinetic and thermodynamic studies, J. Chem. Eng. Data, 61 (2016) 3806–3813.
  34. D. Pathania, G. Sharma, A. Kumar, Mu. Naushad, S. Kalia, A. Sharma, Z.A. Alothman, Combined sorptional-photocatalytic remediation of dyes by polyaniline Zr(IV) selenotungstophosphate nanocomposite, Toxicol. Environ. Chem., 97 (2015) 526–537.
  35. D. Pathania, D. Gupta, A.H. Al-Muhtaseb, G. Sharma, A. Kumar, Mu. Naushad, T. Ahamad, S.M. Alshehri, Photocatalytic degradation of highly toxic dyes using chitosan-g-poly (acrylamide)/ZnS in presence of solar irradiation, J. Photochem. Photobio. A: Chem., 329 (2016) 61–68.
  36. A. Kumar, G. Sharma, Mu. Naushad, P. Singh, S. Kalia, Polyacrylamide/Ni0.02Zn0.98O nanocomposite with high solar light photocatalytic activity and efficient adsorption capacity for toxic dye removal, Ind. Eng. Chem. Res., 53 (2014) 15549–15560.
  37. R.D. Shannon, Revised effective ionic radii and systematic study of inter atomic distances in halides and chalcogenides, ActaCrystallogr., A32 (1976) 751–767.
  38. A. Fahami, G.W. Beall, Mechanosynthesis and characterization of hydrotalcite like Mg–Al–SO4-LDH, Mater. Lett., 165 (2016) 192–195.
  39. S. Babakhani, Z.A. Talib, M.Z. Hussein, A.A.A. Ahmed, Optical and thermal properties of Zn/Al-layered double hydroxide nanocomposite intercalated with sodium dodecyl sulfate, J. Spectrosc. (2014) http://dx.doi.org/10.1155/2014/467064.
  40. N. Ahmed, Y. Shibata, T. Taniguchi, Y. Izumi, Photocatalytic conversion of carbon dioxide into methanol using zinc–copper– M(III) (M = aluminum, gallium) layered double hydroxides, J. Catal., 279 (2011) 123–135.
  41. R. Jiang, J. Yao, H. Zhu, Y. Fu, Y. Chang, L. Xiao, G. Zeng, Effective decolorization of congo red in aqueous solution by adsorption and photocatalysis using novel magnetic alginate/ γ-Fe2O3/CdS nanocomposite, Desal. Water. Treat., 52 (2014) 238–247.
  42. N. Chubar, R. Gilmour, V. Gerda, M. Micusik, M. Omatsova, K. Heister, P. Man, J. Fraissard, V. Zaitsev, Layered double hydroxides as the next generation inorganic anion exchangers: Synthetic methods versus applicability, Adv. Colloid. Interf.e Sci., 245 (2017) 62–80.
  43. K.M. Reza, A.S.W. Kurny, F. Gulshan, Parameters affecting the photocatalytic degradation of dyes using TiO2: a review, Appl. Water Sci., 7 (2017) 1569–1578.
  44. M. Dinari, M.M. Momeni, Y. Ghayeb, Photodegradation of organic dye by ZnCrLa-layered double hydroxide as visible-light photocatalysts, J. Mater. Sci.: Mater. Electron., 27 (2016) 9861–9869.