Preparation of Coated CMC-nZVI Using Rheological Phase Reaction Method and Research on Degradation of Chloroform in Water

Abstract:

This study reported the synthesis of nanoscale zero-valent iron (nZVI) by rheological phase reaction method in the presence of sodium (CMC). The synthesized CMC coated nZVI (CMC-nZVI) was then characterized with x-ray diffraction (XRD) and transmission electron microscope (TEM) and was tested for the removal of chloroform from simulated groundwater. The investigated parameters in the uptake experiments included different adsorbents, initial concentrations of chloroform and different water flow. The results show that:(1) the prepared CMC-nZVI has good stability and dispersibility; (2) when the concentration of chloroform is 0.1 mg/L, the dosage of CMC-Fe⁰ is 0.01 g, the removal rate of chloroform is 91.2%;(3)The reaction follows the first-order kinetic reaction equation, and the apparent reaction rate constant increases with decreasing the concentration of chloroform.

• Periodical: Materials Science Forum (Volume 847)
• Pages: 230-233
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.847.230
• Online since: March 2016
• Authors: Shu Zhen Yu, Yue Cheng, Xiao Feng Fan, Li Ping Xu
• Keywords: Chloroform, CMC-nZVI, Rheological Phase Reaction

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