This study proposes the use of an ultrasound-assisted adsorption system coupled to porous ceramic fragments to improve the removal of iron from FeSO aqueous solution. Ultrasound was applied using an ultrasound bath at a low frequency (37 kHz, 330 W). The optimized conditions for Fe removal were achieved by 7 g of adsorbent, 40 min of sonication, 20 mg L of initial Fe concentration, and 30 °C of reaction temperature. After optimizing the conditions, the method was applied for the removal of iron in groundwater. A central composite design and response surface methodology were used to evaluate the degree to which different variables had a significant effect on iron removal. The efficiency of iron removal using the selected conditions for FeSO solution was near to 100%. However, for groundwater samples, the maximum iron removal efficiencies of the system with and without ultrasound were 80.7% and 51.1%, respectively, indicating that the adsorption with ultrasound was significantly higher than that without ultrasound. It was shown that the proposed ultrasound-assisted adsorption system can be used to enhance the removal of inorganic iron from groundwater.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/09593330.2020.1822923 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A comparative study on monitoring of bioactive compound production/degradation, volatile substances, and oxidation indices during horn and bath high-power ultrasound-assisted oil bleaching.
Ultrason Sonochem
November 2024
Department of Food Science and Technology, Faculty of Agriculture, Fasa University, Fasa, Iran. Electronic address:
Article Synopsis
- This research compared the effects of two ultrasonic bleaching methods (bath and horn) on sunflower oil regarding degradation of beneficial compounds like tocopherols and sterols, as well as oxidation levels.
- The study found that both ultrasound methods led to greater reductions in these compounds compared to traditional bleaching methods, with the horn technique proving more effective.
- Despite having lower power output, the horn sonicator caused higher degradation of nutrients and increased oxidation indices, indicating a more pronounced impact on oil quality when compared to bath sonication and conventional bleaching.
Adsorption characteristics of modified bentonites for purification of anthocyanin from saffron tepal.
Food Sci Nutr
November 2024
Department of Plant Production Saffron Institute, University of Torbat Heydarieh Torbat Heydarieh Iran.
In this study, anthocyanin was extracted from saffron tepals utilizing the ultrasound-assisted extraction method. The adsorbents of raw bentonite (RB), acid activation of bentonite (AA) thermal activation of bentonite (TA), and acid and thermal activation of bentonite (ATA) were employed to separate anthocyanin from solution. The influence of the operating parameters was evaluated.
View Article and Find Full Text PDFFacilitating Oriented Electron Transfer from Cu to MoC MXene for Weakened Mo─H Bond Toward Enhanced Photocatalytic H Generation.
Small
November 2024
Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, China.
MoC MXene (MoCT) is recognized as an excellent cocatalyst due to unique physicochemical properties and platinum-like d-band of Mo active sites. However, Mo sites of MoCT with high-density empty d-orbitals exhibit strong Mo─H bonds during photocatalytic hydrogen evolution, leading to easy adsorption of hydrogen ions from solution and unfavorable desorption of H from Mo sites. To weaken the Mo─H bond, a strategy of oriented electron transfer from Cu to MoCT to increase the antibonding orbital occupancy of Mo─H hybrid orbitals is implemented by introducing Cu into MoCT interlayers to form Cu-MoCT.
View Article and Find Full Text PDFUltrasound-Assisted Community Bureau of Reference (BCR) Procedure for Heavy Metal Removal in Sewage Sludge.
Materials (Basel)
November 2024
National Research and Development Institute for Industrial Ecology-ECOIND, 57-73 Drumul Podu Dambovitei, 060652 Bucharest, Romania.
Sewage sludge (SS) resulting from wastewater treatment plants (WWTP) is commonly applied worldwide as a fertilizer in agriculture. This can be done following a rigorous analysis of the sewage sludge composition. Due to its toxic potential, heavy metal ion content is one of the key parameters to test when evaluating SS sample usage as fertilizer.
View Article and Find Full Text PDFStudy on optimization of extraction and purification processes for total flavonoids from Lycopi herba roots and their anti-proliferative effects on fibrous synoviocytes in human rheumatoid arthritis.
Ultrason Sonochem
November 2024
Chongqing Engineering Laboratory of Green Planting and Deep Processing of Famous-region Drug in the Three Gorges Reservoir Region, College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404020, China. Electronic address:
Article Synopsis
- Lycopi herba, traditionally known for its aerial parts, has roots that contain valuable flavonoid compounds with medicinal properties, such as anti-inflammatory and anti-tumor activities, which have often been overlooked.
- This study focused on improving the extraction and purification of flavonoids from L. herba roots, using techniques like ultrasound-assisted extraction and response surface methodology to achieve optimal conditions and high yields.
- The research revealed that the purified flavonoids exhibited significant anti-proliferative effects on human fibroblast-like synoviocytes, suggesting potential benefits for treating rheumatoid arthritis and advocating for better utilization of L. herba root resources.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!