Abstract：
:Natural pyrrhotite (NP) shows promising future in activating persulfate (PS) due to its easy availability at a low cost and easy separation. This study discussed the degradation of O-isopropyl-N-ethyl thionocarbamate (IPETC) in NP/PS system. NP-PS system showed the best IPETC mineralization at the initial pH of 6.0 (62.84%). The kinetics study suggested that the IPETC degradation followed the pseudo-first-order equation in the NP-PS system. NP-PS system worked better in bottled water (96.46%) and tap water (85.14%) than river water (31.28%). Combined with Fourier transform-infrared spectroscopy, gas chromatography-mass spectrometry and computational calculation, the degradation products, including acetone, formic acid isopropyl ester and ethylamine, were identified and the degradation pathway of IPETC in NP-PS system was proposed. The S, O and N atoms in IPETC are easier to be attacked by. SO4-Ethylamine and reduced S ions coordinately worked to recycle Fe2+ in NP/PS/IPETC system.
journal_name
Chemospherejournal_title
Chemosphereauthors
Wu B,Gu G,Deng S,Liu D,Xiong Xdoi
10.1016/j.chemosphere.2019.02.062subject
Has Abstractpub_date
2019-06-01 00:00:00pages
120-127eissn
0045-6535issn
1879-1298pii
S0045-6535(19)30280-2journal_volume
224pub_type
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