期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 210, 期 -, 页码 698-709出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2018.08.052
关键词
Surfactant; Micelle; Indigo carmine; Crystal violet; Bicarbonate-activated peroxide; Oxidation
资金
- Romanian National Authority for Scientific Research, CNDI UEFISCDI [PN-II-PT-PCCA-2011-3.1-0031]
Herein we report the modulating effect of sodium dodecyl sulphate (SDS), hexadecyl-pyridinium chloride (HDPC) and octylphenol ethoxylate (Triton X100) on the degradation of indigo carmine (IC) and crystal violet (CV) in bicarbonate-activated peroxide (BAP) system. Upon the addition of surfactant/BAP surfoxidant, the decolourization degrees of both dyes were above 60% after 5 min, and the total organic carbon removal after 15 min varied within 44-50%. While SDS has shown rather an inhibitory effect during the oxidation of CV, HDPC and Triton promoted the oxidation of both CV and IC, particularly HDPC when a 10-fold increase of the decolourization rate was obtained. This behaviour suggests the formation of active entities-kinetic micelles acting as nano-reactors by enclosing reactants in small-sized aggregates with volumes ranging from 30 to 720 mm(3).
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