Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6586886 | Chemical Engineering Journal | 2013 | 8 Pages |
Abstract
Wastewaters often contain organics and heavy metals and simultaneous removal of these mixed contaminants using iron-based nanoparticles is still unclear. In this paper, chitosan stabilized bimetallic Fe/Ni nanoparticles (CS-Fe/Ni) used to remove mixed contaminants such as amoxicillin and Cd (II) was reported, where only 68.9% and 81.3% of amoxicillin and Cd (II) was removed in co-existing amoxicillin and Cd (II), while 93.0% and 90.9% were removed individually with an initial concentration of 60Â mg/L within 60Â min. SEM and EDS confirmed that chitosan served as a stabilizer to enhance the stability of Fe/Ni and to reduce aggregation of nanoparticles, while XRD and FTIR confirmed that iron oxides were formed and Cd (II) adsorbed onto iron oxides. CS-Fe/Ni exhibited functions such as the catalytic reduction of amoxicillin and the adsorption of Cd (II), which were confirmed by a pseudo first-order kinetic degradation and a pseudo second-order kinetic adsorption model. Here the activation energy for the degradation of amoxicillin was 60.9Â kJ/mol and 22.0Â kJ/mol for the adsorption of Cd (II), respectively. This indicated a chemically controlled reaction and adsorption. Finally, CS-Fe/Ni used to remove amoxicillin and Cd (II) in wastewater has been demonstrated.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Xiulan Weng, Shen Lin, Yanhua Zhong, Zuliang Chen,