TY - JOUR

T1 - Photooxidation of p-arsanilic acid in aqueous solution by UV/persulfate process

AU - Shen, Xiangyi

AU - Xu, Jing

AU - Pozdnyakov, Ivan P.

AU - Liu, Zizheng

N1 - Publisher Copyright: © 2018 by the authors.

PY - 2018/4/13

Y1 - 2018/4/13

N2 - Used as a kind of feed additive, p-arsanilic acid can pose a potential risk to organisms when abandoned in the environment. The photodegradation of p-ASA was investigated under UV-C irradiation in the presence of persulfate (PS) in this work. The addition of PS facilitated the decomposition of p-ASA and notably, the presence of 50 mmol PS brought about a nearly complete mineralization after 3 h, while an insignificant total organic carbon (TOC) removal was observed under UV irradiation (λ = 254 nm) only. Experimental results proved that sulfate radical (SO4•-) was responsible for the promotion effect. The cleavage of As-C bond released inorganic arsenic and caused the occurrence of various organic products, for example, hydroxybenzaldehyde, nitrobenzene, benzenediol sulfate, and biphenylarsinic acid. The application of PS with UV-C light may throw a light on thorough treatment for p-ASA containing wastewater.

AB - Used as a kind of feed additive, p-arsanilic acid can pose a potential risk to organisms when abandoned in the environment. The photodegradation of p-ASA was investigated under UV-C irradiation in the presence of persulfate (PS) in this work. The addition of PS facilitated the decomposition of p-ASA and notably, the presence of 50 mmol PS brought about a nearly complete mineralization after 3 h, while an insignificant total organic carbon (TOC) removal was observed under UV irradiation (λ = 254 nm) only. Experimental results proved that sulfate radical (SO4•-) was responsible for the promotion effect. The cleavage of As-C bond released inorganic arsenic and caused the occurrence of various organic products, for example, hydroxybenzaldehyde, nitrobenzene, benzenediol sulfate, and biphenylarsinic acid. The application of PS with UV-C light may throw a light on thorough treatment for p-ASA containing wastewater.

KW - P-arsanilic acid

KW - Photodegradation

KW - Sulfate radical

KW - UV/persulfate system

KW - photodegradation

KW - p-arsanilic acid

KW - HETEROGENEOUS CATALYSIS

KW - MASS-SPECTROMETRY

KW - ADVANCED OXIDATION PROCESSES

KW - POULTRY LITTER

KW - KINETICS

KW - PHOTODEGRADATION

KW - DEGRADATION

KW - BISPHENOL-A

KW - sulfate radical

KW - ACTIVATED PERSULFATE

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85045636202&partnerID=8YFLogxK

U2 - 10.3390/app8040615

DO - 10.3390/app8040615

M3 - Article

AN - SCOPUS:85045636202

VL - 8

JO - Applied Sciences (Switzerland)

JF - Applied Sciences (Switzerland)

SN - 2076-3417

IS - 4

M1 - 615

ER -