Harshita Gogoi, Ruichi Zhang, Jakub Matusik, Tiina Leiviskä, Jaakko Rämö, Juha Tanskanen, Vanadium removal by cationized sawdust produced through iodomethane quaternization of triethanolamine grafted raw material, Chemosphere, Volume 278, 2021, 130445, ISSN 0045-6535, https://doi.org/10.1016/j.chemosphere.2021.130445
Vanadium removal by cationized sawdust produced through iodomethane quaternization of triethanolamine grafted raw material
|Author:||Gogoi, Harshita1; Zhang, Ruichi1; Matusik, Jakub2;|
1Chemical Process Engineering, P.O. Box 4300, 90014, University of Oulu, Oulu, Finland
2Department of Mineralogy, Petrography and Geochemistry, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Krakow, Poland
|Online Access:||PDF Full Text (PDF, 1.5 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2021041310253
|Publish Date:|| 2021-04-13
In this study, two-step surface modification of sawdust using triethanolamine (at 180 °C) and iodomethane (at 42 °C) was performed to produce a novel quaternized biosorbent, TEA-I-SD. The characterization studies revealed significant morphological changes in the sawdust and successful quaternization with a nitrogen content of 5.75%. The highest vanadium removal (96.2%) was achieved at pH 4 (dosage 1 g/L, initial vanadium concentration 19.1 mg/L). Equilibrium was achieved within 8 h of contact time and the adsorption kinetics were well fitted with the pseudo-second-order model. Both film diffusion and intra-particle diffusion contributed to the adsorption process, while the latter was the rate-limiting step. The maximum vanadium adsorption capacity of TEA-I-SD (35.0 mg/g, pH 4) was close to the theoretical value obtained from the Langmuir model. The best fit was achieved with the Redlich-Peterson model, exhibiting a monolayer adsorption phenomenon. Tests with real mine water containing 11 mg/L of vanadium also confirmed its high removal (91.3%, dosage 1 g/L) using TEA-I-SD at pH 4. The TEA-I-SD could be reused three times without significant capacity loss after regeneration, although the desorption efficiency was rather low (synthetic solution: 38.5–40.5% and mine water: 26.2–43.1%).
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
116 Chemical sciences
218 Environmental engineering
This research was funded by the Academy of Finland, project “Comprehensive Sulphate Management in Cold Mining Waters” (COSUMA) (grant number 295050). The research was also partially supported by the VanProd project “Innovation for Enhanced Production of Vanadium from Waste Streams in the Nordic Region”, funded by the European Union programme Interreg Nord 2014–2020 and Regional Council of Lapland.
|Academy of Finland Grant Number:||
295050 (Academy of Finland Funding decision)
© 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).