Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals
The applications of polysulfides derived from natural plant oil and sulfur via the inverse vulcanization in the removal of heavy metals from aqueous solutions suffered from their low porosity and scarce surface functionality because of their hydrophobic surfaces and bulk characteristics. In this stu...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Springer
2024
|
| _version_ | 1825939344368599040 |
|---|---|
| author | Lyu, Shiqi Zainal Abidin, Zurina Yaw, Thomas Choong Shean Gunam Resul, Mohamad Faiz Mukhtar |
| author_facet | Lyu, Shiqi Zainal Abidin, Zurina Yaw, Thomas Choong Shean Gunam Resul, Mohamad Faiz Mukhtar |
| author_sort | Lyu, Shiqi |
| collection | UPM |
| description | The applications of polysulfides derived from natural plant oil and sulfur via the inverse vulcanization in the removal of heavy metals from aqueous solutions suffered from their low porosity and scarce surface functionality because of their hydrophobic surfaces and bulk characteristics. In this study, polysulfides from sulfur and palm oil (PSPs) with significantly enhanced porosity (13.7–24.1 m2/g) and surface oxygen-containing functional groups (6.9–8.6 wt.) were synthesized with the optimization of process conditions including reaction time, temperature, and mass ratios of sulfur/palm oil/NaCl/sodium citrate. PSPs were applied as sorbents to remove heavy metals present in aqueous solutions. The integration of porosity and oxygen modification allowed a fast kinetic (4.0 h) and enhanced maximum sorption capacities for Pb(II) (218.5 mg/g), Cu(II) (74.8 mg/g), and Cr(III) (68.4 mg/g) at pH 5.0 and T 298 K comparing with polysulfides made without NaCl/sodium citrate. The sorption behaviors of Pb(II), Cu(II), and Cr(III) on PSPs were highly dependent on the solution pH values and ionic strength. The sorption presented excellent anti-interference capability for the coexisting cations and anions. The sorption processes were endothermic and spontaneous. This work would guide the preparation of porous polysulfides with surface modification as efficient sorbents to remediate heavy metals from aqueous solutions. |
| first_indexed | 2024-09-25T03:39:14Z |
| format | Article |
| id | upm.eprints-106271 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-09-25T03:39:14Z |
| publishDate | 2024 |
| publisher | Springer |
| record_format | dspace |
| spelling | upm.eprints-1062712024-05-12T13:16:11Z http://psasir.upm.edu.my/id/eprint/106271/ Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals Lyu, Shiqi Zainal Abidin, Zurina Yaw, Thomas Choong Shean Gunam Resul, Mohamad Faiz Mukhtar The applications of polysulfides derived from natural plant oil and sulfur via the inverse vulcanization in the removal of heavy metals from aqueous solutions suffered from their low porosity and scarce surface functionality because of their hydrophobic surfaces and bulk characteristics. In this study, polysulfides from sulfur and palm oil (PSPs) with significantly enhanced porosity (13.7–24.1 m2/g) and surface oxygen-containing functional groups (6.9–8.6 wt.) were synthesized with the optimization of process conditions including reaction time, temperature, and mass ratios of sulfur/palm oil/NaCl/sodium citrate. PSPs were applied as sorbents to remove heavy metals present in aqueous solutions. The integration of porosity and oxygen modification allowed a fast kinetic (4.0 h) and enhanced maximum sorption capacities for Pb(II) (218.5 mg/g), Cu(II) (74.8 mg/g), and Cr(III) (68.4 mg/g) at pH 5.0 and T 298 K comparing with polysulfides made without NaCl/sodium citrate. The sorption behaviors of Pb(II), Cu(II), and Cr(III) on PSPs were highly dependent on the solution pH values and ionic strength. The sorption presented excellent anti-interference capability for the coexisting cations and anions. The sorption processes were endothermic and spontaneous. This work would guide the preparation of porous polysulfides with surface modification as efficient sorbents to remediate heavy metals from aqueous solutions. Springer 2024 Article PeerReviewed Lyu, Shiqi and Zainal Abidin, Zurina and Yaw, Thomas Choong Shean and Gunam Resul, Mohamad Faiz Mukhtar (2024) Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals. Environmental Science and Pollution Research, 31. pp. 16940-16957. ISSN 0944-1344; ESSN: 1614-7499 https://link.springer.com/article/10.1007/s11356-024-32323-z 10.1007/s11356-024-32323-z |
| spellingShingle | Lyu, Shiqi Zainal Abidin, Zurina Yaw, Thomas Choong Shean Gunam Resul, Mohamad Faiz Mukhtar Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals |
| title | Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals |
| title_full | Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals |
| title_fullStr | Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals |
| title_full_unstemmed | Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals |
| title_short | Inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals |
| title_sort | inverse vulcanization induced oxygen modified porous polysulfides for efficient sorption of heavy metals |
| work_keys_str_mv | AT lyushiqi inversevulcanizationinducedoxygenmodifiedporouspolysulfidesforefficientsorptionofheavymetals AT zainalabidinzurina inversevulcanizationinducedoxygenmodifiedporouspolysulfidesforefficientsorptionofheavymetals AT yawthomaschoongshean inversevulcanizationinducedoxygenmodifiedporouspolysulfidesforefficientsorptionofheavymetals AT gunamresulmohamadfaizmukhtar inversevulcanizationinducedoxygenmodifiedporouspolysulfidesforefficientsorptionofheavymetals |