References

  1. X. Bai, Y. Du, X. Hu, Y. He, C. He, E. Liu, J. Fan, Synergy removal of Cr (VI) and organic pollutants over RP-MoS2/rGO photocatalyst, Appl. Catal., B, 239 (2018) 204–213.
  2. M.S. Gaikwad, C. Balomajumder, Simultaneous electrosorptive removal of chromium(VI) and fluoride ions by capacitive deionization (CDI): multicomponent isotherm modeling and kinetic study, Sep. Purif. Technol., 186 (2017) 272–281.
  3. S. Ayoob, A.K. Gupta, Fluoride in drinking water: a review on the status and stress effects, Crit. Rev. Environ. Sci. Technol., 36 (2006) 433–487.
  4. L. Deng, Z. Shi, L. Wang, S. Zhou, Fabrication of a novel NiFe2O4/Zn-Al layered double hydroxide intercalated with EDTA composite and its adsorption behavior for Cr(VI) from aqueous solution, J. Phys. Chem. Solids, 104 (2017) 79–90.
  5. Z.A. Al-Othman, R. Ali, M. Naushad, Hexavalent chromium removal from aqueous medium by activated carbon prepared from peanut shell: adsorption kinetics, equilibrium and thermodynamic studies, Chem. Eng. J., 184 (2012) 238–247.
  6. G. Sharma, A. Kumar, M. Naushad, A. Kumar, A.a.H. Al-Muhtaseb, P. Dhiman, A.A. Ghfar, F.J. Stadler, M.R. Khan, Photoremediation of toxic dye from aqueous environment using monometallic and bimetallic quantum dots based nanocomposites, J. Cleaner Prod., 172 (2018) 2919–2930.
  7. G. Sharma, B. Thakur, M. Naushad, A.a.H. Al-Muhtaseb, A. Kumar, M. Sillanpaa, G.T. Mola, Fabrication and characterization of sodium dodecyl sulphate@ironsilicophosphate nanocomposite: ion exchange properties and selectivity for binary metal ions, Mater. Chem. Phys., 193 (2017) 129–139.
  8. Y. Zheng, B. Cheng, W. You, J. Yu, W. Ho, 3D hierarchical graphene oxide-NiFe LDH composite with enhanced adsorption affinity to Congo red, methyl orange and Cr(VI) ions, J. Hazard. Mater., 369 (2019) 214–225.
  9. M. Naushad, T. Ahamad, G. Sharma, A.a.H. Al-Muhtaseb, A.B. Albadarin, M.M. Alam, Z.A. Alothman, S.M. Alshehri, A.A. Ghfar, Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion, Chem. Eng. J., 300 (2016) 306–316.
  10. G. Sharma, B. Thakur, M. Naushad, A. Kumar, F.J. Stadler, S.M. Alfadul, G.T. Mola, Applications of nanocomposite hydrogels for biomedical engineering and environmental protection, Environ. Chem. Lett., 16 (2017) 113–146.
  11. G. Sharma, M. Naushad, D. Pathania, A. Mittal, G.E. El-Desoky, Modification of Hibiscus cannabinus fiber by graft copolymerization: application for dye removal, Desal. Wat. Treat., 54 (2014) 3114–3121.
  12. M.A. Teixeira, A.B. Mageste, A. Dias, L.S. Virtuoso, K.P.F. Siqueira, Layered double hydroxides for remediation of industrial wastewater containing manganese and fluoride, J. Cleaner Prod., 171 (2018) 275–284.
  13. H.P. Chao, Y.C. Wang, H.N. Tran, Removal of hexavalent chromium from groundwater by Mg/Al-layered double hydroxides using characteristics of in-situ synthesis, Environ. Pollut., 243 (2018) 620–629.
  14. M. Xu, B. Bi, B. Xu, Z. Sun, L. Xu, Polyoxometalate-intercalated ZnAlFe-layered double hydroxides for adsorbing removal and photocatalytic degradation of cationic dye, Appl. Clay Sci., 157 (2018) 86–91.
  15. T.L. Coelho, Y.E. Licea, L.A. Palacio, A.C. Faro, Heptamolybdateintercalated CoMgAl hydrotalcites as precursors for HDSselective hydrotreating catalysts, Catal. Today, 250 (2015) 38–46.
  16. B. Zhang, L. Luan, R. Gao, F. Li, Y. Li, T. Wu, Rapid and effective removal of Cr(VI) from aqueous solution using exfoliated LDH nanosheets, Colloids Surf., A, 520 (2017) 399–408.
  17. D. Bharali, R.C. Deka, Preferential adsorption of various anionic and cationic dyes from aqueous solution over ternary CuMgAl layered double hydroxide, Colloids Surf., A, 525 (2017) 64–76.
  18. S. Anantharaj, K. Karthick, S. Kundu, Evolution of layered double hydroxides (LDH) as high performance water oxidation electrocatalysts: a review with insights on structure, activity and mechanism, Mater. Today Energy, 6 (2017) 1–26.
  19. M. Pigna, J.J. Dynes, A. Violante, A. Sommella, A.G. Caporale, Sorption of arsenite on Cu-Al, Mg-Al, Mg-Fe, and Zn-Al layered double hydroxides in the presence of inorganic anions commonly found in aquatic environments, Environ. Eng. Sci., 33 (2016) 98–104.
  20. J. Cai, X. Zhao, Y. Zhang, Q. Zhang, B. Pan, Enhanced fluoride removal by La-doped Li/Al layered double hydroxides, J. Colloid Interface Sci., 509 (2018) 353–359.
  21. X. He, X. Qiu, J. Chen, Preparation of Fe(II)–Al layered double hydroxides: application to the adsorption/reduction of chromium, Colloids Surf. A, 516 (2017) 362–374.
  22. P. Cai, H. Zheng, C. Wang, H. Ma, J. Hu, Y. Pu, P. Liang, Competitive adsorption characteristics of fluoride and phosphate on calcined Mg-Al-CO3 layered double hydroxides, J. Hazard. Mater., 213–214 (2012) 100–108.
  23. A. Nagaraj, M. Rajan, Enhanced removal of hazardous fluoride from drinking water by using a smart material: magnetic iron oxide fabricated layered double hydroxide/cellulose composite, J. Environ. Chem. Eng., 6 (2018) 5645–5654.
  24. A.A. Bakr, N.A. Sayed, T.M. Salama, I.O. Ali, R.R. Abdel Gayed, N.A. Negm, Kinetics and thermodynamics of Mn(II) removal from aqueous solutions onto Mg-Zn-Al LDH/montmorillonite nanocomposite, Egypt. J. Petrol., 27 (2018) 1215–1220.
  25. F. Ling, L. Fang, Y. Lu, J. Gao, F. Wu, M. Zhou, B. Hu, A novel CoFe layered double hydroxides adsorbent: High adsorption amount for methyl orange dye and fast removal of Cr(VI), Microporous Mesoporous Mater., 234 (2016) 230–238.
  26. X. Tao, D. Liu, W. Cong, L. Huang, Controllable synthesis of starch-modified ZnMgAl-LDHs for adsorption property improvement, Appl. Surface Sci., 457 (2018) 572–579.
  27. W. Wang, J. Zhou, G. Achari, J. Yu, W. Cai, Cr(VI) removal from aqueous solutions by hydrothermal synthetic layered double hydroxides: adsorption performance, coexisting anions and regeneration studies, Colloids Surf., A, 457 (2014) 33–40.
  28. A. Jawad, Y. Li, X. Lu, Z. Chen, W. Liu, G. Yin, Controlled leaching with prolonged activity for Co-LDH supported catalyst during treatment of organic dyes using bicarbonate activation of hydrogen peroxide, J. Hazard. Mater., 289 (2015) 165–173.
  29. F. Yang, S. Zhang, Y. Sun, K. Cheng, J. Li, D.C.W. Tsang, Fabrication and characterization of hydrophilic corn stalk biochar-supported nanoscale zero-valent iron composites for efficient metal removal, Bioresour. Technol., 265 (2018) 490–497.
  30. H. Hu, J. Liu, Z. Xu, L. Zhang, B. Cheng, W. Ho, Hierarchical porous Ni/Co-LDH hollow dodecahedron with excellent adsorption property for Congo red and Cr(VI) ions, Appl. Surface Sci., 478 (2019) 981–990.
  31. L. Hongtao, L. Shuxia, Z. Hua, Q. Yanling, Y. Daqiang, Z. Jianfu, Z. Zhiliang, Comparative study on synchronous adsorption of arsenate and fluoride in aqueous solution onto MgAlFe- LDHs with different intercalating anions, RSC Adv., 8 (2018) 33301–33313.
  32. M. Islam, R. Patel, Synthesis and physicochemical characterization of Zn/Al chloride layered double hydroxide and evaluation of its nitrate removal efficiency, Desalination, 256 (2010) 120–128.
  33. S. Yanming, L. Dongbin, L. Shifeng, F. Lihui, C. Shuai, M.A. Haque, Removal of lead from aqueous solution on glutamate intercalated layered double hydroxide, Arab. J. Chem., 10 (2017) S2295–S2301.
  34. X. Lv, X. Qin, K. Wang, Y. Peng, P. Wang, G. Jiang, Nanoscale zero valent iron supported on MgAl-LDH-decorated reduced graphene oxide: enhanced performance in Cr(VI) removal, mechanism and regeneration, J. Hazard. Mater., 373 (2019) 176–186.
  35. J. Wang, D. Kang, X. Yu, M. Ge, Y. Chen, Synthesis and characterization of Mg–Fe–La trimetal composite as an adsorbent for fluoride removal, Chem. Eng. J., 264 (2015) 506–513.
  36. X. Wu, Y. Zhang, X. Dou, M. Yang, Fluoride removal performance of a novel Fe–Al–Ce trimetal oxide adsorbent, Chemosphere, 69 (2007) 1758–1764.
  37. K.H. Goh, T.T. Lim, Z. Dong, Application of layered double hydroxides for removal of oxyanions: a review, Water Res., 42 (2008) 1343–1368.
  38. R.L. Goswamee, P. Sengupta, K.G. Bhattacharyya, D.K. Dutta, Adsorption of Cr(VI) in layered double hydroxides, Appl. Clay Sci., 13 (1998) 21–34.
  39. M. Naushad, S. Vasudevan, G. Sharma, A. Kumar, Z.A. Alothman, Adsorption kinetics, isotherms, and thermodynamic studies for Hg2+ adsorption from aqueous medium using alizarin red-S-loaded amberlite IRA-400 resin, Desal. Wat. Treat., 57 (2015) 18551–18559.
  40. G. Sharma, M. Naushad, A.a.H. Al-Muhtaseb, A. Kumar, M.R. Khan, S. Kalia, Shweta, M. Bala, A. Sharma, Fabrication and characterization of chitosan-crosslinked-poly(alginic acid) nanohydrogel for adsorptive removal of Cr(VI) metal ion from aqueous medium, Int. J. Biol. Macromol., 95 (2017) 484–493.
  41. G. Sharma, M. Naushad, A. Kumar, S. Rana, S. Sharma, A. Bhatnagar, F.J. Stadler, A.A. Ghfar, M.R. Khan, Efficient removal of coomassie brilliant blue R-250 dye using starch/ poly(alginic acid-cl-acrylamide) nanohydrogel, Process Saf. Environ. Protect., 109 (2017) 301–310.
  42. V.K. Gupta, A.K. Shrivastava, N. Jain, Biosorption of chromium(VI) from aqueous solutions by green algae Spirogyra species, Water Res., 35 (2001) 4079–4085.
  43. F.D. Natale, A. Erto, A. Lancia, D. Musmarra, A descriptive model for metallic ions adsorption from aqueous solutions onto activated carbons, J. Hazard. Mater., 169 (2009) 360–369.
  44. V.K. Gupta, A. Rastogi, A. Nayak, Adsorption studies on the removal of hexavalent chromium from aqueous solution using a low cost fertilizer industry waste material, J. Colloid Interface Sci., 342 (2010) 135–141.
  45. W. Li, Y. Tang, Y. Zeng, Z. Tong, D. Liang, W. Cui, Adsorption behavior of Cr(VI) ions on tannin-immobilized activated clay, Chem. Eng. J., 193–194 (2012) 88–95.
  46. H. Hong, W.T. Jiang, X. Zhang, L. Tie, Z. Li, Adsorption of Cr(VI) on STAC-modified rectorite, Appl. Clay Sci., 42 (2008) 292–299.
  47. G. Zhang, Z. He, X. Wei, A low-cost and high efficient zirconium-modified Na-attapulgite adsorbent for fluoride removal from aqueous solutions, Chem. Eng. J., 183 (2012) 315–324.
  48. A. Tor, N. Danaoglu, G. Arslan, Y. Cengeloglu, Removal of fluoride from water by using granular red mud: Batch and column studies, J. Hazard. Mater., 164 (2009) 271–278.
  49. M.S. Gaikwad, C. Balomajumder, Tea waste biomass activated carbon electrode for simultaneous removal of Cr(VI) and fluoride by capacitive deionization, Chemosphere, 184 (2017) 1141–1149.
  50. X. Fan, D.J. Parker, M.D. Smith, Adsorption kinetics of fluoride on low cost materials, Water Res., 37 (2003) 4929–4937.
  51. M. Islam, R.K. Patel, Evaluation of removal efficiency of fluoride from aqueous solution using quick lime, J. Hazard. Mater., 43 (2007) 303–310.
  52. G. Mishra, B. Dash, S. Pandey, Layered double hydroxides: A brief review from fundamentals to application as evolving biomaterials, Appl. Clay Sci., 153 (2018) 172–186.
  53. V. Hernandez-Montoya, M.A. Perez-Cruz, D.I. Mendoza-Castillo, M.R. Moreno-Virgen, A. Bonilla-Petriciolet, Competitive adsorption of dyes and heavy metals on zeolitic structures, J. Environ. Manage., 116 (2013) 213–221.
  54. S. Chen, Y. Huang, X. Han, Z. Wu, C. Lai, J. Wang, Q. Deng, Z. Zeng, S. Deng, Simultaneous and efficient removal of Cr(VI) and methyl orange on LDHs decorated porous carbons, Chem. Eng. J., 352 (2018) 306–315.
  55. T. Zhang, Q. Li, H. Xiao, H. Lu, Y. Zhou, Synthesis of Li– Al layered double hydroxides (LDHs) for efficient fluoride removal, Ind. Eng. Chem. Res., 51 (2012) 11490–11498.
  56. P. Huang, C. Cao, F. Wei, Y.B. Sun, W. Song, MgAl layered double hydroxides with chloride and carbonate ions as interlayer anions for removal of arsenic and fluoride ions in water, RSC Adv., 5 (2015) 10412–10417.