MODIFIED RAW MATERIALS: SYNTHESIS, CHARACTERIZATION AND APPLICATION FOR Cd²⁺ IONS REMOVAL
| dc.contributor.author | Gulziya A. SEILKHANOV | |
| dc.contributor.author | Ainur N. IMANGALIYEVA | |
| dc.contributor.author | Dina N. AKBAYEVA | |
| dc.contributor.author | Zhanna ZH. KENZHALINA | |
| dc.date.accessioned | 2024-10-16T15:39:16Z | |
| dc.date.issued | 2017-03-30 | |
| dc.description | STUDIA UBB CHEMIA, LXII, 1, 2017 (p. 35-50), DOI:10.24193/subbchem.2017.1.03 Gulziya A. SEILKHANOV Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan Corresponding author: g_seilkhanova@mail.ru https://orcid.org/0000-0002-9939-8316 Ainur N. IMANGALIYEVA Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan https://orcid.org/0000-0002-3044-277X Dina N. AKBAYEVA Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan https://orcid.org/0000-0002-0483-6468 Zhanna ZH. KENZHALINA Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan | |
| dc.description.abstract | The adsorption behavior of some lowcost adsorbents such as bentonite, meal thistle and carbonized walnut husk with respect to Cd2+ ions in aqueous solutions has been studied. The several process parameters (contact time, initial metal concentration, sorption capacity, extraction degree, rate constants, sorption rates and sorption energy) were found. For the Cd2+ ions adsorption the equilibrium time onto bentonite, meal thistle and carbonized walnut husk were found to be 2 h, 25 and 10 min, respectively. Adsorption parameters were determined using both Langmuir and Freundlich isotherms. Sorption isotherms of cadmium ions onto MBT (modified bentonite) and MTM (modified thistle meal) were the best of all described by the equation of Freundlich sorption (correlation coefficients are closest to unit). In contrast the sorption of Cd2+ ions onto MCWH (modified carbonized walnut husk) was described by the Langmuir isothermic model where the adsorption occurs on homogeneous surface by monolayer sorption without interaction between sorbed ions. The obtained results demonstrate that bentonite, meal thistle and carbonized walnut husk can remove Cd2+ ions from aqueous solutions. It means that cheap and available raw materials can be efficient adsorbents and capable to remove cationic heavy metal species from waste water. The ion-exchange mechanism of adsorption of cadmium ions by the MBT, MTM, MCWH was proposed. | |
| dc.description.sponsorship | This work was supported by the grant of Ministry of Education and Science of Republic of Kazakhstan 3444/GF4 “Scientific bases development of phosphorus-containing compounds obtaining on the basis of technogenic mineral raw materials”. | |
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| dc.identifier.issn | 1224-7154 | |
| dc.identifier.issn | online: 2065-9520 | |
| dc.identifier.uri | http://dspace.chem.ubbcluj.ro/handle/20.500.14637/8 | |
| dc.language.iso | en | |
| dc.publisher | STUDIA UBB CHEMIA. Published by Babeş-Bolyai University | |
| dc.relation.ispartofseries | STUDIA UBB CHEMIA, LXII, 1, 2017 (p. 35-50), DOI:10.24193/subbchem.2017.1.03 | |
| dc.subject | sorption | |
| dc.subject | Cd | |
| dc.subject | bentonite | |
| dc.subject | meal thistle | |
| dc.subject | carbonized walnut husk | |
| dc.subject | kinetics | |
| dc.title | MODIFIED RAW MATERIALS: SYNTHESIS, CHARACTERIZATION AND APPLICATION FOR Cd²⁺ IONS REMOVAL | |
| dc.type | Article |