| Title |
Fabrication of a Lignin-Based Magnetic Nanocomposite Adsorbent to Recover Phosphorus in Water for Agricultural Reuse |
| ID_Doc |
8187 |
| Authors |
Li, TT; Tong, ZH; Zheng, QZ; Bao, HX; Partow, A; Meng, SY; Li, LX; Li, YCC |
| Title |
Fabrication of a Lignin-Based Magnetic Nanocomposite Adsorbent to Recover Phosphorus in Water for Agricultural Reuse |
| Year |
2021 |
| Published |
Acs Sustainable Chemistry & Engineering, 9.0, 31 |
| DOI |
10.1021/acssuschemeng.1c01492 |
| Abstract |
Phosphorus (P) is an essential nutrient for crops, but its excess in discharge water harms both surface water and groundwater quality. A cost-effective and eco-friendly adsorbent is desirable to meet circular economy criteria by effectively removing P from water and being safely recycled for agricultural use. Thus, this study aims to synthesize an amine-functionalized magnetic lignin nanocomposite biosorbent by first grafting poly(ethyleneimine) on epoxidized lignin followed by coprecipitation with iron. This biosorbent shows an adsorption performance of 43 mg g(-1), which is 20 times greater than the unmodified lignin reported in a previous research study and six times more than the magnetic iron metal. A series of characterization methods confirm the chemical features and the formation of a nanostructure. The pH, coexisting anions, and salt concentrations affect the P removal efficiency. The mechanism studies show that the electrostatic interaction between NH3+ functional groups and P, surface precipitation, and ligand exchange all count for P removal, which indicates the heterogeneous adsorption of P onto the sorbent surface by both chemisorption and physisorption. The seedling study confirms that the nanocomposite after P adsorption has better root development and biomass accumulation as a recycled fertilizer. |
| Author Keywords |
nanobiosorbent; phosphorus removal; phosphorus recycle; lignin-based; magnetic nanocomposite |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000685099000007 |
| WoS Category |
Chemistry, Multidisciplinary; Green & Sustainable Science & Technology; Engineering, Chemical |
| Research Area |
Chemistry; Science & Technology - Other Topics; Engineering |
| PDF |
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