Journal
CHEMICAL ENGINEERING JOURNAL
Volume 341, Issue -, Pages 218-226Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2018.02.025
Keywords
Micro-adsorbent; Hydrogel; Prussian blue; Cesium; Glass capillary device
Categories
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2014R1A5A1009799]
- Inha University WCSL research grant
- National Research Foundation of Korea [2014R1A5A1009799] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Here, we designed and synthesized a recoverable multifunctional adsorbent using a microfluidic reaction system and evaluated the removal performance of the smart adsorbent toward radioactive cesium as a model sample. Prussian blue-laden magnetic micro-adsorbents (PB-MNPs-MAs) with uniform morphology and monodispersity were generated via two-step sequential procedures using a glass capillary microfluidic system, followed by chemical co-precipitation with a high production rate. The cesium removal efficacy of the PB-MNPs-MAs was analyzed based on Langmuir and Freundlich isotherms by controlling adsorption parameters such as adsorbent size, initial cesium concentration, and contact time. The adsorption isotherm of the PB-MNPs-MAs was better fitted to the Langmuir model with a maximum cesium adsorption capacity of 58.73 mg g(-1), which was 40% higher than that of macro-adsorbents in a dynamic magnetic field. This result can be attributed to their large specific area, which increased the kinetic rate of cesium adsorption and achieved saturation within 20 min. Additionally, the PB-MNPs-MAs were recovered from wastewater within 5 s under a static magnetic field, indicating their great potential for magnetic actuation. We believe that our PB-MNPs-MAs can encapsulate nanofunctional adsorbents and prevent actuation, making them promising for environmental remediation and especially for removal of radionuclides.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available