References

1. N.V. Rusova, O.V. Astashkina, A.A. Lysenko, Adsorption of heavy metals by activated carbon fibers, Fiber Chem., 47 (2015) 320–323.
2. M.A. Zain, Y. Amano, M. Machida, Adsorption of heavy metals onto activated carbons derived from polyacrylonitrile fiber, J. Hazard. Mater., 180 (2010) 552–560.
3. D. Mohan, K. P. Singh, Single- and multi-component adsorption of cadmium and zinc using activated carbon derived from bagasse—an agricultural waste, Water Res., 36 (2002) 2304–2318.
4. M.A. do Amaral Junior, J.T. Matsushima, M.C. Rezende, E.S. Gonçalves, J.S. Marcuzzo, M.R. Baldan, Production and characterization of activated carbon fiber from textile PAN fiber, J. Aerosp. Technol. Manage., 9 (2017) 423–430.
5. M. Suzuki, Activated carbon fiber: fundamentals and applications, Carbon, 32 (1994) 577–586.
6. T. Lee, C.-H. Ooi, Othman, Radzali, F.Y. Yeoh, Activated carbon fiber - the hybrid of carbon fiber and activated carbon, Rev. Adv. Mater. Sci., 36 (2014) 118–136.
7. Y. Yang, Z. Mei-Hua, X. Gang, J. Zheng-Xiong, Preparation and characterization of PAN-based ultra-fine activated carbon fiber adsorbent, J. Porous Mater., 18 (2011) 379–387.
8. M.F. Nasr, S.M. Abo El-Ola, A. Ramadan, A. Hashem, A comparative study between the adsorption behavior of activated carbon fiber and modified alginate I. Basic dyes adsorption, Polym. Plast. Technol. Eng., 45 (2006) 335–340.
9. J. Lee, M. Kim, Y. Lee, Selective removal of Cr(VI) and Cr(III) in aqueous solution by surface modified activated carbon, Carbon Lett., 9 (2008) 23–27.
10. M. Pang, B. Liu, N. Kano, H. Imaizumi, Adsorption of chromium (VI) onto activated carbon modified with KMnO₄, J. Chem. Chem. Eng., 9 (2015) 280–287.
11. O.S. Amuda, A.A. Giwa, I.A. Bello, Removal of heavy metal from industrial wastewater using modified activated coconut shell carbon, Biochem. Eng. J., 36 (2007) 174–181.
12. D.A. Fungaro, J.E.A. Graciano, Adsorption of zinc ions from water using zeolite/iron oxide composites, Adsorpt. Sci. Technol., 25 (2007) 729–740.
13. R. Leyva-Ramos, M.S. Berber-Mendoza, J. Salazar-Rabago, R.M. Guerrero-Coronado, J. Mendoza-Barron, Adsorption of lead(II) from aqueous solution onto several types of activated carbon fibers, Adsorption, 17 (2011) 515–526.
14. K.J. Cronje, K. Chetty, M. Carsky, J.N. Sahu, B.C. Meikap, Optimization of chromium(VI) sorption potential using developed activated carbon from sugarcane bagasse with chemical activation by zinc chloride, Desalination, 275 (2011) 276–284.
15. Z.L. Deng, M.N. Liang, H.H. Li, Z.J. Zhu, Advances in Preparation of Modified Activated Carbon and its Applications in the Removal of Chromium (VI) from Aqueous Solutions, IOP Conference Series: Earth and Environmental Science, 2016.
16. E.V. Abaldueva, T.V. Druzhinina, Sorption of the heavy metals by polyamide chemisorption fibers, Fiber Chem, 36 (2004) 267–275.
17. Y. Gokce, Z. Aktas, Nitric acid modification of activated carbon produced from waste tea and adsorption of methylene blue and phenol, Appl. Surf. Sci., 313 (2014) 352–359.
18. M. Kobya, Adsorption, Kinetic and equilibrium studies of Cr(VI) by hazelnut shell activated carbon, Adsorpt. Sci. Technol., 22 (2004) 51–64.
19. A. Ihsanullah, F.A. Al-Khaldi, B. Abu-Sharkh, A.M. Abulkibash, M.I. Qureshi, T. Laoui, M.A. Atieh, Effect of acid modification on adsorption of hexavalent chromium (Cr(VI)) from aqueous solution by activated carbon and carbon nanotubes, Desal. Wat. Treat, 57 (2016) 7232–7244.
20. Z. Guo, J. Zhang, H. Liu, Y. Kang, Development of a nitrogenfunctionalized carbon adsorbent derived from biomass waste by diammonium hydrogen phosphate activation for Cr(VI) removal, Powder Technol., 318 (2017) 459–464.
21. S. Babel, T.A. Kurniawan, Cr(VI) removal from synthetic wastewater using coconut shell charcoal and commercial activated carbon modified with oxidizing agents and/or chitosan, Chemosphere, 54 (2004) 951–967.
22. N.M. Osmond, Activated carbon fiber adsorbent materials, Adsorpt. Sci. Technol., 18 (2000) 529–539.
23. R.A. Meye, Interpretation of Infrared Spectra, A Practical Approach in Encyclopedia of Analytical Chemistry, John Wiley & Sons Ltd, Chichester, 2000.