Adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis
Abstract This research examines the efficacy of layered double hydroxides (LDHs) in removing phosphate and nitrate from wastewater, enhanced by the memory effect and in situsynthesis techniques. LDHs were synthesized hydrothermally, initially creating carbonate-based CO₃–LDHs, which were then conver...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-02-01
|
| Series: | Applied Water Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s13201-024-02332-x |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832571421154344960 |
|---|---|
| author | Sarah Mariska Zhang Jin-Wei Hoang Huu Chien Duong Minh Ngoc Nguyen Duy Hai Huan-Ping Chao |
| author_facet | Sarah Mariska Zhang Jin-Wei Hoang Huu Chien Duong Minh Ngoc Nguyen Duy Hai Huan-Ping Chao |
| author_sort | Sarah Mariska |
| collection | DOAJ |
| description | Abstract This research examines the efficacy of layered double hydroxides (LDHs) in removing phosphate and nitrate from wastewater, enhanced by the memory effect and in situsynthesis techniques. LDHs were synthesized hydrothermally, initially creating carbonate-based CO₃–LDHs, which were then converted to chloride-based Cl–LDHs through anion exchange. These LDHs underwent calcination at 300 °C, 400 °C, and 500 °C to optimize their structure for enhanced adsorption capabilities. The synthesized LDHs were thoroughly characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area analysis, and X-ray diffraction (XRD). Adsorption experiments in solutions with pH values between 5, 7, and 9 revealed the adsorption capacities of phosphate and nitrate on the CO₃–LDHs and Cl–LDH, respectively. The results indicated that LDHs calcined at 500 °C showed the highest adsorption performance, achieving maximum capacities of 184 mg/g for phosphate and 70.1 mg/g for nitrate. Kinetic studies confirmed that the adsorption process followed a pseudo-second-order model, demonstrating the effectiveness of the memory effect in enhancing ion exchange. The in situ synthesis of LDHs under controlled conditions significantly improved the removal rates of these anionic contaminants from wastewater, proving the potential of this method for the realistic wastewater treatment. |
| format | Article |
| id | doaj-art-0576af248bcb4526b55fa4799744f458 |
| institution | Kabale University |
| issn | 2190-5487 2190-5495 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Applied Water Science |
| spelling | doaj-art-0576af248bcb4526b55fa4799744f4582025-02-02T12:36:13ZengSpringerOpenApplied Water Science2190-54872190-54952025-02-0115211110.1007/s13201-024-02332-xAdsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesisSarah Mariska0Zhang Jin-Wei1Hoang Huu Chien2Duong Minh Ngoc3Nguyen Duy Hai4Huan-Ping Chao5Department of Civil, Chung Yuan Christian UniversityCenter of Environmental Governance Research, National Environmental Research AcademyFaculty of Natural Resource Management, Thai Nguyen University of Agriculture and Forestry (TUAF)Faculty of Environment, Thai Nguyen University of Agriculture and Forestry (TUAF)Faculty of Environment, Thai Nguyen University of Agriculture and Forestry (TUAF)Department of Environmental Engineering, Chung Yuan Christian UniversityAbstract This research examines the efficacy of layered double hydroxides (LDHs) in removing phosphate and nitrate from wastewater, enhanced by the memory effect and in situsynthesis techniques. LDHs were synthesized hydrothermally, initially creating carbonate-based CO₃–LDHs, which were then converted to chloride-based Cl–LDHs through anion exchange. These LDHs underwent calcination at 300 °C, 400 °C, and 500 °C to optimize their structure for enhanced adsorption capabilities. The synthesized LDHs were thoroughly characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area analysis, and X-ray diffraction (XRD). Adsorption experiments in solutions with pH values between 5, 7, and 9 revealed the adsorption capacities of phosphate and nitrate on the CO₃–LDHs and Cl–LDH, respectively. The results indicated that LDHs calcined at 500 °C showed the highest adsorption performance, achieving maximum capacities of 184 mg/g for phosphate and 70.1 mg/g for nitrate. Kinetic studies confirmed that the adsorption process followed a pseudo-second-order model, demonstrating the effectiveness of the memory effect in enhancing ion exchange. The in situ synthesis of LDHs under controlled conditions significantly improved the removal rates of these anionic contaminants from wastewater, proving the potential of this method for the realistic wastewater treatment.https://doi.org/10.1007/s13201-024-02332-xAdsorptionIn situ synthesisLayered double hydroxidesMemory effectPhosphateNitrate |
| spellingShingle | Sarah Mariska Zhang Jin-Wei Hoang Huu Chien Duong Minh Ngoc Nguyen Duy Hai Huan-Ping Chao Adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis Applied Water Science Adsorption In situ synthesis Layered double hydroxides Memory effect Phosphate Nitrate |
| title | Adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis |
| title_full | Adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis |
| title_fullStr | Adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis |
| title_full_unstemmed | Adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis |
| title_short | Adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis |
| title_sort | adsorptive removal of phosphate and nitrate by layered double hydroxides through the memory effect and in situ synthesis |
| topic | Adsorption In situ synthesis Layered double hydroxides Memory effect Phosphate Nitrate |
| url | https://doi.org/10.1007/s13201-024-02332-x |
| work_keys_str_mv | AT sarahmariska adsorptiveremovalofphosphateandnitratebylayereddoublehydroxidesthroughthememoryeffectandinsitusynthesis AT zhangjinwei adsorptiveremovalofphosphateandnitratebylayereddoublehydroxidesthroughthememoryeffectandinsitusynthesis AT hoanghuuchien adsorptiveremovalofphosphateandnitratebylayereddoublehydroxidesthroughthememoryeffectandinsitusynthesis AT duongminhngoc adsorptiveremovalofphosphateandnitratebylayereddoublehydroxidesthroughthememoryeffectandinsitusynthesis AT nguyenduyhai adsorptiveremovalofphosphateandnitratebylayereddoublehydroxidesthroughthememoryeffectandinsitusynthesis AT huanpingchao adsorptiveremovalofphosphateandnitratebylayereddoublehydroxidesthroughthememoryeffectandinsitusynthesis |