Assisted activated carbon‐microwave degradation of the sodium dodecyl benzene sulfonate by nano‐ or micro‐Fe3O4 and comparison of their catalytic activity. Issue 2 (30th November 2011)

• Record Type: Journal Article
• Authors: Zhang, Zhaohong; Xu, Yao; Shen, Manli; Dionysiou, Dionysios D.; Wu, Dan; Chen, Zhonglin; Li, Fangyi; Liu, Danni; Zhang, Fengqiu
• Is Part Of: Environmental progress & sustainable energy. Volume 32:Issue 2(2013:Jul.)
• Page Start: 181
• Page End: 186
• Publication Date: 2011-11-30
• Subjects: Environmental engineering -- Periodicals; Sustainable engineering -- Periodicals; Environmental chemistry -- Periodicals; 333.7
• DOI: 10.1002/ep.10627
• Languages: English
• ISSNs: 1944-7442

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>An improved method of the integration of activated carbon‐microwave (AC/MW) system with magnetic material such as nano‐ or micro‐Fe<sub>3</sub>O<sub>4</sub> is proposed. A series of experiments to study the Fe<sub>3</sub>O<sub>4</sub> assisted AC/MW (Fe<sub>3</sub>O<sub>4</sub>/AC/MW) degradation of sodium dodecyl benzene sulfonate (SDBS), as a model organic contaminant, was performed. The catalytic activities of nano‐Fe<sub>3</sub>O<sub>4</sub>/AC and micro‐Fe<sub>3</sub>O<sub>4</sub>/AC under MW irradiation were also compared. Some influence factors like added amount of Fe<sub>3</sub>O<sub>4</sub>, MW irradiation time, initial SDBS concentration, solution acidity, and Fe<sub>3</sub>O<sub>4</sub>/AC dose on the degradation were assessed in detail. The results showed that the addition of Fe<sub>3</sub>O<sub>4</sub> significantly promoted the AC/MW degradation and nano‐Fe<sub>3</sub>O<sub>4</sub>/AC displayed higher catalytic activity under MW irradiation. By comparison, the nano‐Fe<sub>3</sub>O<sub>4</sub>/AC/MW process exhibited many advantages including high degradation rate, short irradiation time, low cost, no residual intermediates, and no secondary pollution in application. Thus, it shows to be a promising technology for the destruction of organic contaminants in wastewater treatment applications. © 2011 American Institute of Chemical Engineers Environ Prog, 32: 181‐186, 2013</p> </abstract>