Topography and structural regulation-induced enhanced recovery of lithium from shale gas produced water via polyethylene glycol functionalized layered double hydroxide
| dc.contributor.author | Pan, Yanan | en |
| dc.contributor.author | Ji, Bin | en |
| dc.contributor.author | Zhang, Wencai | en |
| dc.contributor.author | Knott, Kenneth | en |
| dc.contributor.author | Xia, Yang | en |
| dc.contributor.author | Li, Qi | en |
| dc.contributor.author | Rena, Bhavin | en |
| dc.date.accessioned | 2025-01-23T14:15:34Z | en |
| dc.date.available | 2025-01-23T14:15:34Z | en |
| dc.date.issued | 2024-11 | en |
| dc.description.abstract | Recovering lithium from wastewater generated during shale gas operations is essential for promoting sustainable resource utilization and safeguarding the environment. This study aimed to develop a lithium adsorbent by modifying lithium-aluminum layered double hydroxide (Li/Al-LDH) using varying concentrations of polyethylene glycol (PEG) of two distinct molecular weights. Remarkably, the application of a 10 % solution of PEG400 at 293 K and a liquid-to-solid ratio of 20 mL/g yielded a substantial enhancement in the lithium adsorption capacity, increasing from 2.50 mg/g to 3.61 mg/g. Characterization studies revealed positive alterations in the physicochemical attributes of Li/Al-LDH after the integration of PEG long chains, particularly in its surface and structural properties. Moreover, DFT calculations demonstrated an increase in Li+ binding energy from −1.05 eV to −3.24 eV. The lithium adsorption process in produced water using the modified material reached equilibrium within 15 min through a spontaneous chemical reaction. Its capability to release Li+ under neutral conditions offers an environmentally friendly advantage. With a stable cyclic adsorption capacity of around 4.00 mg/g over eight rounds, the material demonstrated remarkable recyclability. This research presents a pioneering advanced lithium adsorbent for the sustainable extraction of lithium from shale gas produced water, thereby advancing the new energy sector. | en |
| dc.description.version | Accepted version | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | https://doi.org/10.1016/j.jiec.2024.10.032 | en |
| dc.identifier.issn | 1226-086X | en |
| dc.identifier.orcid | Zhang, Wencai [0000-0001-8568-5309] | en |
| dc.identifier.uri | https://hdl.handle.net/10919/124323 | en |
| dc.language.iso | en | en |
| dc.publisher | Elsevier | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.title | Topography and structural regulation-induced enhanced recovery of lithium from shale gas produced water via polyethylene glycol functionalized layered double hydroxide | en |
| dc.title.serial | Journal of Industrial and Engineering Chemistry | en |
| dc.type | Article - Refereed | en |
| dc.type.dcmitype | Text | en |
| dc.type.other | Journal Article | en |
| pubs.organisational-group | Virginia Tech | en |
| pubs.organisational-group | Virginia Tech/Engineering | en |
| pubs.organisational-group | Virginia Tech/Engineering/Mining and Minerals Engineering | en |
| pubs.organisational-group | Virginia Tech/All T&R Faculty | en |
| pubs.organisational-group | Virginia Tech/Engineering/COE T&R Faculty | en |