E3S Web of Conferences
Volume 1, 2013Proceedings of the 16th International Conference on Heavy Metals in the Environment
|Number of page(s)||3|
|Section||Heavy Metals in Aquatic Systems II|
|Published online||23 April 2013|
Zero Valent Iron Nanoparticle Assisted Electrocoagulation of Arsenic with electromagnetic Separation of Solids
Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso, CHILE
A new arsenic removal process was designed combining: 1) iron nanoparticle addition, b) electrocoagulation, and c) electromagnetic separation. Results showed that arsenic could be removed with more than 99 % efficiency from liquid waste samples. Parameters that were found to have importance on the process were: a) nanoparticle dosage, b) electric voltage drop during electrocoagulation, b) pH of the solution, d) arsenic concentration, and e) electromagnetic field distribution during solid separation. Arsenic could efficiently be removed by iron nanoparticles during electrocoagulation. Afterwards the arsenic containing particles were separated from the solution by electromagnetic fields. This new process could be a feasible alternative to conventional arsenic treatment in liquid waste streams.
Key words: Arsenic / Iron nanoparticles / electrocoagulation / magnetic separation
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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