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Using different configurations of -planted constructed wetland-microbial fuel cells to remove Cr (Ⅵ) and p-chlorophenol and generate electricity.
Environ Technol
January 2025
Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, People's Republic of China.
P-chlorophenol (4-CP) and hexavalent chromium (Cr (VI)) are predominant contaminants in industrial effluents, eliciting substantial environmental and human health concerns. As a strong oxidant, Cr (Ⅵ) has the potential to facilitate the removal of 4-CP. However, the specific removal effect remains unclear.
View Article and Find Full Text PDFEffective removal of Congo red and hexavalent chromium from aqueous solutions by guar gum/sodium alginate/Mg/Al-layered double hydroxide composite microspheres.
Int J Biol Macromol
December 2024
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China. Electronic address:
Article Synopsis
- The study developed GG/SA/Mg-Al-LDH composite microspheres (G-LDH) using natural polymers, which significantly improved adsorption of Congo red and hexavalent chromium compared to traditional Mg/Al-LDH.
- G-LDH demonstrated an average particle size of 400-900 nm and a unique microsphere shape, with high adsorption capacities of 361.6 mg/g for Congo red and 461.7 mg/g for chromium solutions.
- The adsorption behavior of G-LDH aligns with the Langmuir isotherm model, indicating an efficient, spontaneous process suitable for low-cost water treatment applications.
Enhancing hexavalent chromium stable reduction via sodium alginate encapsulation of newly isolated fungal and bacterial consortia.
J Hazard Mater
December 2024
School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China; Key Laboratory of Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China. Electronic address:
Chromium [Cr(VI)]-induced soil pollution is a serious environmental threat. Bioremediation utilizes specific microbes capable of transforming Cr(VI) into the less toxic Cr(III), however, microbial efficacy can be inhibited by elevated pollutant concentrations and competition from indigenous microbial communities. Thus, this study explored the potential of single and multi-domain microbial consortia encapsulated in alginate to overcome these shortcomings.
View Article and Find Full Text PDFOptimization of chromium (VI) reduction in aqueous solution using magnetic Fe3O4 sludge resulting from electrocoagulation process.
PLoS One
December 2024
School of Design, Informatics and Business, Abertay University, Dundee, United Kingdom.
The reuse of electro-coagulated sludge as an adsorbent for Cr(VI) ion reduction was investigated in this study. Electro-coagulated sludge was obtained during the removal of citric acid wastewater by the electrocoagulation process. The following parameters were optimized for Cr(VI) reduction: pH (5-7), initial Cr(VI) concentration (10-50 mg/L), contact time (10-45 min), and adsorbent dosage (0.
View Article and Find Full Text PDFAmino-functionalized manganese oxide for effective hexavalent chromium adsorption.
Environ Sci Pollut Res Int
December 2024
Laboratory of Interface Materials Environment, Faculty of Sciences Ain Chock, Hassan II University, Casablanca, Morocco.
This study explores the use of functionalized manganese oxide (K-MnO-NH) for the removal of hexavalent chromium (Cr(VI)) ions, a highly toxic heavy metal contaminant, from wastewater. The synthesis of K-MnO-NH was achieved through a two-step process, followed by comprehensive characterization using various analytical techniques, which confirmed the material's formation as a pure phase. The K-MnO-NH exhibited exceptional chromium removal efficiency, achieving up to 90% (4.
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