DOI: 10.1016/j.watres.2018.10.038
Scopus记录号: 2-s2.0-85055901142
论文题名: 2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) degradation by ozonation: Kinetics, phosphorus transformation, anti-precipitation property changes and phosphorus removal
作者: Xu Z.-B. ; Wang W.-L. ; Huang N. ; Wu Q.-Y. ; Lee M.-Y. ; Hu H.-Y.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 334
结束页码: 343
语种: 英语
英文关键词: Anti-precipitation property
; Antiscalant
; Ozonation
; PBTCA
; Phosphorus transformation
Scopus关键词: Alkalinity
; Chlorination
; Chlorine compounds
; Coagulation
; Eutrophication
; Molecules
; Ozone
; Ozonization
; Precipitates
; Rate constants
; Antiscalant
; PBTCA
; Phosphorus transformations
; Precipitation effects
; Precipitation properties
; Reverse osmosis systems
; Second-order rate constants
; Transformation products
; Phosphorus
; 2 phosphonobutane 1,2,4 tricarboxylic acid
; carbamazepine
; ferric chloride
; hydroxyl radical
; ibuprofen
; naproxen
; ozone
; phosphate
; phosphorus
; tricarboxylic acid
; unclassified drug
; aggregate
; chemical compound
; coagulation
; concentration (composition)
; degradation
; eutrophication
; inorganic phosphorus
; organic phosphorus
; ozonation
; ozone
; phosphorus
; pollutant removal
; precipitation (chemistry)
; reaction kinetics
; reverse osmosis
; transformation
; alkalinity
; Article
; degradation
; kinetics
; ozonation
; pH
; pollutant
; precipitation
; priority journal
; rate constant
英文摘要: 2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) is an antiscalant that is widely used in reverse osmosis (RO) systems. Because of its high concentration in RO concentrate, eutrophication risk and anti-precipitation properties may affect subsequent treatments, therefore treatment strategies are needed to eliminate such substances. In this study, PBTCA was degraded by ozonation. The results show that PBTCA reacted with ozone molecules and hydroxyl radicals, with second-order rate constants of (0.12 ± 0.002) and (7.83 ± 1.51) × 10 8 L mol −1 s −1 , respectively. The phosphorus in PBTCA (P P ) was transformed into organic phosphorus except for PBTCA (P O ), and inorganic phosphorus (P I ); P O was further transformed into P I . The changes in the concentrations of these phosphorus forms were investigated by model simulation. Simulation showed that the rate of P P transformation into P O was 5.5 times higher than that into P I . PBTCA was ozonated much faster at alkaline pH than at acidic pH. This is ascribed to different amounts of ozone molecules and hydroxyl radicals, and their different reaction rates with PBTCA. Furthermore, anti-precipitation property was reduced during ozonation, as shown by the amounts and morphology changes of the precipitates. PBTCA concentration for 50% anti-precipitation (AP 50 ) did not change during ozonation, indicating that the transformation products generated during ozonation did not have anti-precipitation effects. Phosphorus in PBTCA was removed by ozonation–coagulation treatment. Total phosphorus and inorganic phosphorus were removed efficiently by using ferric chloride as a coagulant. The coagulants tended to bind with inorganic phosphorus to form flocs. Meanwhile, flocs were more easily to aggregate and precipitate as anti-precipitation effect was gradually removed, thus more phosphorus was removed. A combination of ozonation and coagulation removed PBTCA effectively and simultaneously reduced its anti-precipitation property and phosphorus. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122200
Appears in Collections: 气候变化事实与影响
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作者单位: Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing, 100084, China; Shenzhen Laboratory of Microorganism Application and Risk Control, Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, 518055, China; School of Environment, Tsinghua University, Room 524, Beijing, 10084, China
Recommended Citation:
Xu Z.-B.,Wang W.-L.,Huang N.,et al. 2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) degradation by ozonation: Kinetics, phosphorus transformation, anti-precipitation property changes and phosphorus removal[J]. Water Research,2019-01-01