Home
Resources
Publications
The Multiple Role of Bromide Ion in PPCPs Degradation Under UV/Chlorine Treatment

The Multiple Role of Bromide Ion in PPCPs Degradation Under UV/Chlorine Treatment

Shuangshuang Cheng, Xinran Zhang, Xin Yang, Chii Shang, Weihua Song, Jingyun Fang, Yanheng Pan

Environ Sci Technol. 2018 Feb 20;52(4):1806-1816.

PMID: 29338220

Abstract:

This study investigated the role of bromide ions in the degradation of nine pharmaceuticals and personal care products (PPCPs) during the UV/chlorine treatment of simulated drinking water containing 2.5 mgC L-1 natural organic matter (NOM). The kinetics of contributions from UV irradiation and from oxidation by free chlorine, free bromine, hydroxyl radical and reactive halogen species were evaluated. The observed loss rate constants of PPCPs in the presence of 10 μM bromide were 1.6-23 times of those observed in the absence of bromide (except for iopromide and ibuprofen). Bromide was shown to play multiple roles in PPCP degradation. It reacts rapidly with free chlorine to produce a trace amount of free bromine, which then contributes to up to 55% of the degradation of some PPCPs during 15 min of UV/chlorine treatment. Bromide was also shown to reduce the level of HO• and to change the reactive chlorine species to bromine-containing species, which resulted in decreases in ibuprofen degradation and enhancement in carbamazepine and caffeine degradation, respectively. Reactive halogen species contributed to between 37 and 96% of the degradation of the studied PPCPs except ibuprofen in the presence of 10 μM bromide ion. The effect of bromide is non-negligible during the UV/chlorine treatment.

Chemicals Related in the Paper:

Catalog Number	Product Name	CAS Number	Price
AP1066371	Trimethylgermanium bromide	1066-37-1	Price
AP111762302	5-Chloro-2-thienylmagnesium bromide	111762-30-2	Price
AP29552587	i-Propylammonium bromide	29552-58-7	Price
LS72767	i-Butylammonium bromide		Price
LS7932269	4-Acetoxybutylzinc bromide		Price
LS7932278	Cyclobutylzinc bromide		Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: