DOI: 10.1016/j.watres.2018.11.051
Scopus记录号: 2-s2.0-85057409080
论文题名: Kinetics and modeling of artificial sweeteners degradation in wastewater by the UV/persulfate process
作者: Fu Y. ; Wu G. ; Geng J. ; Li J. ; Li S. ; Ren H.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 12
结束页码: 20
语种: 英语
英文关键词: Artificial sweeteners
; Predicting model based on water matrices
; Reactive species
; Real wastewater
; UV/persulfate
Scopus关键词: Biological materials
; Food additives
; Photolysis
; Rate constants
; Sugar substitutes
; Surface waters
; Artificial sweeteners
; Reactive species
; Real wastewater
; UV/persulfate
; Water matrices
; Photodegradation
; bicarbonate
; chloride ion
; natural organic matter
; nitrate
; persulfate
; sulfate
; sweetening agent
; unclassified drug
; chemical pollutant
; degradation
; ion
; organic matter
; photolysis
; pollutant removal
; reaction kinetics
; response surface methodology
; ultraviolet radiation
; wastewater
; wastewater treatment
; Article
; degradation kinetics
; oxidation
; photolysis
; priority journal
; rate constant
; response surface method
; sedimentation
; ultraviolet radiation
; waste water
英文摘要: The frequent detection of artificial sweeteners (ASs) in wastewater and surface water gives rise to concerns about their removal, Acesulfame (ACE) and sucralose (SUC) are two ASs that are difficult to remove. The ultraviolet/persulfate (UV/PS) advanced oxidation technology (AOT) is being considered as an effective process for the degradation of micropollutants in wastewater. However, the study of the degradation of ASs in real wastewater by the UV/PS is minimal. This study investigated the kinetics and modeling of ACE and SUC degradation in wastewater by the UV/PS process. Both ACE and SUC could be degraded effectively using this process. The degradation of ACE was mainly attributed to UV photolysis (51%), HO∙ (26%) and SO4 ∙- (16%), while that of SUC was mainly attributed to HO∙ (68%) and SO4 ∙- (27%). The second-order rate constants of ASs with SO4 ∙- were significantly lower than that with HO∙. Three major transformation products (TPs) of ACE and four major TPs of SUC were identified. Additionally, the effects and mechanisms of the water matrices, such as HCO3 −, Cl−, NO3 − and natural organic matter (NOM), on ASs degradation were investigated through response surface methodology (RSM). NOM and Cl− significantly inhibited the degradation of ACE in the UV/PS system, whereas NOM and HCO3 − played a main inhibition role on the degradation of SUC. A water matrices parameter model for predicting ASs degradation in real wastewater was established by RSM for the first time, and the removal of ACE and SUC was well predicted by the model. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122113
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing UniversityJiangsu, China
Recommended Citation:
Fu Y.,Wu G.,Geng J.,et al. Kinetics and modeling of artificial sweeteners degradation in wastewater by the UV/persulfate process[J]. Water Research,2019-01-01