Crown Ether-Grafted Graphene Oxide-Based Materials—Synthesis, Characterization and Study of Lithium Adsorption from Complex Brine DOI Open Access
Ewa Knapik,

Grzegorz Rotko,

Marcin Piotrowski

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6269 - 6269

Published: Dec. 22, 2024

Direct lithium extraction from unconventional resources requires the development of effective adsorbents. Crown ether-containing materials have been reported as promising structures in terms selectivity, but data on adsorption real, highly saline brines are scarce. ether-grafted graphene oxides were synthesized using 2-hydroxymethyl-12-crown-4, hydroxy-dibenzo-14-crown-4 and epichlorohydrin a source anchoring groups. The obtained carbonaceous used to prepare chitosan–polyvinyl alcohol composites. prepared (and intermediate products) characterized FTIR, XRD, Raman spectroscopy SEM-EDS methods. Adsorption tests performed pure diluted LiCl solution ([Li] = 200 mg/kg) well oilfield brine ≈ 220 mg/kg), distribution coefficients (Kd) determined. results show that Kd was range 0.9–75.6, while it 0.2–2.3. study indicates high affinity for is mostly associated with non-selective interaction ions oxide matrix (COOH groups). It also shown application dibenzo-14-crown-4 moiety modification groups increases composite material compared an analogous containing 12-crown-4-ether

Language: Английский

Sustainable treatment of boron from oilfield produced water for optimum recovery using zirconium chloride oxo-precipitation DOI

Rabia Khatoon,

Yeek‐Chia Ho,

Maung Maung Myo Thant

et al.

Sustainable Chemistry and Pharmacy, Journal Year: 2024, Volume and Issue: 42, P. 101762 - 101762

Published: Sept. 12, 2024

Language: Английский

Citations

0
RECOVERY OF LITHIUM AND DESALTED WATER FROM OILFIELD BRINE DOI
Ewa Knapik,

Grzegorz Rotko

International Multidisciplinary Scientific GeoConference SGEM ..., Journal Year: 2024, Volume and Issue: 24, P. 441 - 448

Published: Nov. 15, 2024

Oilfield brine extracted with hydrocarbons is often considered as a problematic waste. The typical management option for this produced water reinjection into the formation to maintain reservoir pressure (or just disposal). High salinity of on one hand drawback, but other an advantage because it can be used raw material production valuable chemicals. In paper freezing-thawing desalination method was tested obtain partially desalted and concentrated from water. obtained conductivity lower than 10 mS/cm could beneficially reuse non-potable applications (crop irrigation, livestock watering). concentrate above 80 suitable feed salt/chemicals production. As lithium content in high, up 20 mg/L, so Mn-based sorbent applied recover it. lithium-selective prepared via solid state reaction its morphological textural parameters confirm good chemical stability high affinity towards ions. recovery ration static conditions 95 %. results prove that may outside energy sector.

Language: Английский

Citations

0
Recovery of sulphate from industrial wastewater in the form of strontium sulphate and optimisation using hybrid metaheuristic approach: RSM-GA and RSM-PSO DOI
Navamani Kartic Dhayabaran,

M. Arivazhagan

Indian Chemical Engineer, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 19

Published: Dec. 22, 2024

Large quantities of inorganic salts from process effluent are inevitable and a threat to the environment. Sulphates were major anions (initial concentration = 70 g/L) in pigment industry effluent. Strontium ions could recover sulphate by precipitation as SrSO4, commercially useful precipitate. The stoichiometric ratio precipitant, mixing, temperature optimised response surface methodology (RSM) precipitant had maximum influence (Sensitivity 99.62%). model created RSM showed notable performance (predicted R2 0.9987). Further enhancement optimisation was done coupling with genetic algorithm (GA) particle swarm (PSO). Both them able determine global optima efficiently when their hyper-parameters optimised. In GA, crossover higher than mutation ratio. PSO converged close 20 iterations, exhibiting better exploration exploitation capacity. values (1.35), (30.7°C), mixing speed (230 rpm) validated experimentally, which gave 99.95% utilisation. reaction followed first-order kinetics (R2 0.9908) majorly dependent on concentration. Preliminary cost estimation Aspen that chemical be an employable option for utilising high levels wastewater.

Language: Английский

Citations

0
Crown Ether-Grafted Graphene Oxide-Based Materials—Synthesis, Characterization and Study of Lithium Adsorption from Complex Brine DOI Open Access
Ewa Knapik,

Grzegorz Rotko,

Marcin Piotrowski

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6269 - 6269

Published: Dec. 22, 2024

Direct lithium extraction from unconventional resources requires the development of effective adsorbents. Crown ether-containing materials have been reported as promising structures in terms selectivity, but data on adsorption real, highly saline brines are scarce. ether-grafted graphene oxides were synthesized using 2-hydroxymethyl-12-crown-4, hydroxy-dibenzo-14-crown-4 and epichlorohydrin a source anchoring groups. The obtained carbonaceous used to prepare chitosan–polyvinyl alcohol composites. prepared (and intermediate products) characterized FTIR, XRD, Raman spectroscopy SEM-EDS methods. Adsorption tests performed pure diluted LiCl solution ([Li] = 200 mg/kg) well oilfield brine ≈ 220 mg/kg), distribution coefficients (Kd) determined. results show that Kd was range 0.9–75.6, while it 0.2–2.3. study indicates high affinity for is mostly associated with non-selective interaction ions oxide matrix (COOH groups). It also shown application dibenzo-14-crown-4 moiety modification groups increases composite material compared an analogous containing 12-crown-4-ether

Language: Английский

Citations

0