Removal of cadmium from aqueous solutions using industrial coal fly ash-nZVI

Batch experiments were conducted to test the effects of various solution properties, such as pH, temperature, initial concentration and anoxic and aerobic atmosphere, on Cd removal by nanoscale zerovalent iron (nZVI) supported on industrial coal fly ash. Cd (II) could be removed by adsorption on fly...

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Detalles Bibliográficos
Autores principales: Ma, Lixia, Wei, Qi, Chen, Yueqin, Song, Qiuyang, Sun, Conghui, Wang, Zhiqiang, Wu, Guanghong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society Publishing 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5830719/
https://www.ncbi.nlm.nih.gov/pubmed/29515830
http://dx.doi.org/10.1098/rsos.171051
Descripción
Sumario:Batch experiments were conducted to test the effects of various solution properties, such as pH, temperature, initial concentration and anoxic and aerobic atmosphere, on Cd removal by nanoscale zerovalent iron (nZVI) supported on industrial coal fly ash. Cd (II) could be removed by adsorption on fly ash-nZVI in a very short time (5 min) with high removal rates (greater than 99.9%) over a wide range of concentration (5–100 mg l(−1)). Cd (II) was physically adsorbed on the surface of fly ash-nZVI. The preparation of fly ash-nZVI can incorporate the use of waste media, making the overall adsorbent more removal efficient and low cost.

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