The influence of the pH of the medium on the process of adsorption of copper, nickel, and zinc ions by Siberian larch needles (Larix Sibirica)
Abstract
Heavy metal ions are one of the most toxic pollutants found in the water reservoirs as a result of waste water disposal in electroplating industry. Recently, there has been a lot of research into the sorption properties of inexpensive and available sorption materials containing cellulose produced from plant waste. One such material is the Siberian larch needle (Larix Sibirica). Although there are a great number of works dedicated to the study of sorption processes of heavy metals by materials containing cellulose and the effect of the pH of the medium on the course of the process, there is still no agreement on the mechanisms of sorption processes of heavy metals by materials containing cellulose and the adsorption model to describe these processes. Therefore, the sorption properties of Siberian larch needles with regard to copper, nickel, and zinc ions were studied in statistic conditions with simulated solutions of heavy metal ions with a volume of 100 cm3 and ion content between 10 and 1,500 mg/dm3, the dose of the sorption material of 1g, and the pH of the medium of 2, 4, and 6. The maximum values of larch needle sorption capacity for Cu2+, Ni2+, and Zn2+ ions are 48.8, 17.4 and 36.0 mg/g respectively. The sorption process for copper ions (Cu2+) is the most evident at the pH=4, for nickel ions (Ni2+) at the pH=6, and for zinc ions (Zn2+) sorption is equally good at рН=4 and рН=6. The processing of the obtained isotherms using monomolecular adsorption models (Langmuir, Freundlich, Dubinin-Radushkevich, and Temkin equations) revealed that in weak acid media (рН=6) heavy metal ions are mainly adsorbed in pores, while in acidic media (рН=2-4) they are adsorbed on the surface of the material as a result of interaction of heavy metals with active centres uniformly distributed over the needle surface. Langmuir and Dubinin-Radushkevich equation constants were used to calculate the thermodynamic parameters of the processes. The values for the energy of adsorption and Gibbs free energy indicate the presence of spontaneous physical adsorption.
Downloads
References
Filatova E.G., Pozhidaev Ju.N., Pomazkina O.I., Fizikohimija poverhnosti i zashhita materialov, 2019, Vol. 55, No 5, pp. 507-512. 2. Letenkova I.V., Vestnik SanktPeterburgskogo gosudarstvennogo universiteta tehnologii i dizajna. Serija 1: Estestvennye i tehnicheskie nauki, 2019, No 2, pp. 79-82. 3. Linnikov O.D., Rodina I.V., Baklanova I.V., Suncov A.Ju., Sorbtsionnye i khromatograficheskie protsessy, 2018, Vol. 18, No 4, pp. 554-562. 4. Abramova A.Ju., Jurchenko V.V., Khimija. Ekologija. Urbanistika, 2018, Vol. 1, pp. 185-188. 5. Linnikov O.D., Rodina I.V., Suncov A.Ju., Sorbtsionnye i khromatograficheskie protsessy, 2017, Vol. 17, No 5, pp. 725-732. 6. Filatova E.G., Pomazkina O.I., Pozhidaev Ju.N., Fizikokhimija poverhnosti i zashhita materialov, 2017, Vol. 53, No 6, pp. 596-601. 7. Jur'eva A.V., Butova T.S., Dinamika sistem, mehanizmov i mashin, 2014, No 3, pp. 318320. 8. Maksatova A.M., Vezencev A.I., Mihajljukova M.O., Kalashnikova L.A., Vestnik sovremennyh issledovanij, 2017, No 7-1 (10), pp. 162-169. 9. Sviridov A.V., Jurchenko V.V., Sviridov V.V., Ganebnyh E.V., Sorbtsionnye i khromatograficheskie protsessy, 2016, Vol. 16., No 1, pp. 78-86. 10. Linnikov O.D., Rodina I.V., Tjutjunnik A.P., Eselevich D.A. et al., Voda: himija i Ekologija. 2016, No 7 (97), pp. 72-80. 11. Harljamov D.A., Nasyrov I.A., Mavrin G.V., Shaikhiev I.G., Vestnik Tehnologicheskogo universiteta, 2015, Vol. 18, No 12, pp. 204-206.
Miljutina A.D., Kolesnikov V.A., Uspehi v himii i himicheskoj tehnologii, 2015, Vol. 29, No 1 (160), pp. 43-45. 13. Tsvetkova A.D., Akaev O.P., Vestnik Kostromskogo gosudarstvennogo universiteta im. N.A. Nekrasova, 2011, Vol. 17, No 2, pp. 27-30. 14. Akhrimenko V.E., Akhrimenko Z.M., Sidorova I.I., Poterjaev A.V., Nauka Kubani, 2009, No 4, pp. 20-23. 15. Pimneva L.A., Lebedeva A.A., Mezhdunarodnyj zhurnal jeksperimental'nogo obrazovanija, 2016, No 9-1, pp. 69-70. 16. Miljutina A.D., Kolesnikov V.A., Kolesnikov A.V., Uspehi v himii i himicheskoj tehnologii, 2016, Vol. 30, No 1 (170), pp. 4243. 17. Denisova T.R., Sokolov M.P., Galimova R.Z., Shaikhiev I.G., International Journal of Green Pharmacy, 2017, Vol. 11, No 4, pp. S872-S876. 18. Denisova T.R., Mavrin G.V., Galimova R.Z., Shaikhiev I.G., Research Journal of Pharmaceutical, Biological and Chemical Sciences, 2016, Vol. 7, No 5, pp. 1765-1771. 19. Miftahova F.R., Nguen T.K.T., Galimova R.Z., Shaikhiev I.G., Vestnik Tehnologicheskogo universiteta, 2019, Vol. 22, No 2, pp. 37-43. 20. Miftahova F.R., Nguen T.K.T., Galimova R.Z., Shaikhiev I.G. et al., Sorbtsionnye i khromatograficheskie protsessy, 2019, Vol. 19, No 5, pp. 588-595. 21. Galimova R.Z., Nguen T.K.T., Shaikhiev I.G., Sverguzova S.V., Chemical Bulletin, 2019, Vol. 2, No 4, pp. 12-23. 22. Ugrozov V.V., Filippov A.N., Sidorenko Ju.I., Zhurnal fizicheskoj himii, 2007, Vol. 81, No 3, pp. 458-461. 23. Nguyen T.K.T., Galimova R.Z., Shaikhiev I.G., Denisova T.R. et al., International Journal of Green Pharmacy, 2018, Vol. 12, No 4, pp. S895-S899. 24. Nguyen T.K.T., Sidorovnina O.O., Zamalieva L.A., Miftahova F.R. et al., Vestnik Tehnologicheskogo universiteta, 2017, Vol. 20, No 18. pp. 159-162. 25. Dagaeva E.V., Valinurova Je.R., Vestnik Bashkirskogo universiteta, 2019, Vol. 24, No 1, pp. 71-75. 26. Nikiforova T.E., Kozlov V.A., Rodionova M.V., Modina E.A., Izvestija vysshih uchebnyh zavedenij. Serija: Himija i himicheskaja tehnologija, 2009, Vol. 52, No 3, pp. 2731. 27. Bagrovskaja N.A., Nikiforova T.E., Kozlov V.A., Lilin S.A., Himija v interesah ustojchivogo razvitija, 2006, Vol. 14, No 1, pp. 1-7. 28. Nikiforova T.E., Bagrovskaja N.A., Kozlov V.A., Lilin S.A., Himija rastitel'nogo syr'ja, 2009, No 1, pp. 5-14. 29. Bagrovskaya N.A., Nikiforova T.E., Kozlov V.A., Russian Journal of Physical Chemistry A, 1999, Vol. 73, No 8, pp. 1305-1309. 30. Kamalova N.A., Shaikhiev I.G., Sadykova S.V., Galimova R.Z., "Innovacionnye podhody v reshenii sovremennyh problem racional'nogo ispol'zovanija prirodnyh resursov i ohrany okruzhajushhej sredy", sbornik dokladov Mezhdunarodnoj nauchno-tehnicheskoj konferencii, 2019, pp. 196-201.
Denisova T.R., Kharlyamov D.A., Galimova R.Z., Shaikhiev I.G. et al., International Journal of Engineering and Technology (UAE), 2018, Vol. 7, No 4.7, pp. 219-222. 32. Kamalova N.A., Galimova R.Z., Shaikhiev I.G., Sadykova S.V. et al., Vestnik Tehnologicheskogo universiteta, 2017, Vol. 20, No 19, pp. 121-124. 33. Kamalova N.A., Shajhiev I.G., Sadykova S.V., "Aktual'nye voprosy ohrany okruzhajushhej sredy", sbornik dokladov Vserossijskoj nauchno-tehnicheskoj konferencii, 2018, pp. 114-118. 34. Kamalova N.A., Shaikhiev I.G., Sadykova S.V, "Innovacionnye puti reshenija aktual'nyh problem prirodopol'zovanija i zashhity okruzhajushhej sredy", sbornik dokladov Mezhdunarodnoj nauchno-tehnicheskoj konferencii, 2018, pp. 113-120. 35. Galimova R.Z., Shaikhiev I.G., Ochistka fenolsoderzhashhih stochnyh vod nativnymi i modificirovannymi adsorbcionnymi materialami na osnove othodov sel'skohozjajstvennogo i promyshlennogo proizvodstva. BelgorodKazan', 2018, 96 p. 36. Galimova R.Z., Shaikhiev I.G., "Innovacionnye podhody v reshenii sovremennyh problem racional'nogo ispol'zovanija prirodnyh resursov i ohrany okruzhajushhej sredy", sbornik dokladov Mezhdunarodnoj nauchnotehnicheskoj konferencii, 2019, pp. 160-166.
