SCIENCE OF THE TOTAL ENVIRONMENT
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2024
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IF 8.2
Song Gao,Xinghao Wang,Xinhao Wang,Xiru Chen,Sijia Liang,Ziyan Zhou,Shuxia Xu,Yanfen Fang,Juan Gao,Cheng Gu
Aqueous trivalent manganese [Mn(III)], an important reactive intermediate, is ubiquitous in natural surface water containing humic acid (HA). However, the effect of low-molecular-weight organic acids (LMWOAs) on the formation, stability and reactivity of Mn(III) intermediate is still unknown. In this study, six LMWOAs, including oxalic acid (Oxa), salicylic acid (Sal), catechol (Cat), caffeic acid (Caf), gallic acid (Gal) and ethylene diamine tetraacetic acid (EDTA), were selected to investigate the effects of LMWOAs on the degradation of BPA induced by in situ formed Mn(III)-L in the HA/Mn(II) system under light irradiation. The chromophoric constituents of HA could absorb light radiation and generate superoxide radical to promote the oxidation of Mn(II) to form Mn(III), which was further involved in transformation of BPA. Our results implied that different LMWOAs did significantly impact on Mn(III) production and its degradation of BPA due to their different functional group. EDTA, Oxa and Sal extensively increased the Mn(III) concentration from 50 to 100 μM compared to the system without LMWOAs, following the order of EDTA > Oxa > Sal, and also enhanced the degradation of BPA with the similar patterns. In contrast, Cat, Caf and Gal had an inhibitory effect on the formation of Mn(III), which is likely because they consumed the superoxide radicals generated from irradiated HA, resulting in the inhibition of Mn(II) oxidation and further BPA removal. The product identification and theoretical calculation indicated that a single electron transfer process occurred between Mn(III)-L and BPA, forming BPA radicals and subsequent self-coupling products. Our results demonstrated that the LMWOAs with different structures could alter the cycling process of Mn via complexation and redox reactions, which would provide new implications for the removal of organic pollutants in surface water.
研究领域:
环境科学
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化学
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PubMed
高影响因子
MICROCHIMICA ACTA
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2024
·Vol. 191
·期 6
·1-11
·
IF 5.3
Liu Wei,Li Muyi,Zhang Pengli,Jiang Hongmei,Liu Wenjun,Guan Jinyu,Sun Yanhua,Liu Xiaoying,Zeng Qiongyao
Copper-doped carbon dots and aminated carbon nanotubes (Cu-CDs/NH 2 -CNTs) nanocomposites were synthesized by a one-step growth method, and the composites were characterized for their performance. An electrochemical sensor for sensitive detection of bisphenol A (BPA) was developed for using Cu-CDs/NH 2 -CNTs nanocomposites modified with glassy carbon electrodes (GCE). The sensor exhibited an excellent electrochemical response to BPA in 0.2 M PBS (pH 7.0) under optimally selected conditions. The linear range of the sensor for BPA detection was 0.5–160 μM, and the detection limit (S/N = 3) was 0.13 μM. Moreover, the sensor has good interference immunity, stability and reproducibility. In addition, the feasibility of the practical application of the sensor was demonstrated by the detection of BPA in bottled drinking water and Liu Yang River water. Graphical abstract
研究领域:
材料科学
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环境科学
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分析化学
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PubMed
高影响因子
Materials Today Chemistry
·
2026
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IF 7.4
Mengnan Yin,Huang Zhang,Di Zhang,Lin Shi,Fangfang Li,Baoshan Xing
During the self-assembly of graphene oxide (GO) into three-dimensional graphene-based materials (3D GMs), close-cell structures are formed. However, the specific effects of these structures on the adsorption of 3D GMs remain unclear. To address this, we synthesized a series of 3D GMs with varying proportion of close-cell structures to systematically investigate their impact on Bisphenol A (BPA) adsorption. Prolonged ultrasonic treatment for GO suspension reduced GO sheet size and increased the abundance of close-cell structures in 3D GMs. Raman spectroscopy, isotope tracing, thermogravimetric analysis, and 1 H NMR measurements revealed that freeze-thawing converts confined water into free water, suggesting the destruction of close-cell structures. The freeze-thawing treatment enhanced the BPA adsorption capacity of graphene hydrogel (GH), and this enhancement was more pronounced with the decreased size of GO nanosheets. This result demonstrated that GH samples with a higher abundance of close-cell structures generated more newly exposed adsorption sites for BPA during freeze-thawing. Furthermore, adsorption experiments in real environmental water (Dianchi Lake) demonstrated that although the BPA adsorption on freeze-thawing graphene hydrogel (FGH-60 m) decreased by 43% compared to in pure water, it still exhibited higher BPA adsorption than that of GH-60 m in lake water. This indicates that the close-cell structures retain significant potential for pollutants adsorption in practical environmental applications.
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高影响因子
International Journal of Environmental Research and Public Health
·
2019
·Vol. 16
·期 21
·4100
·
IF 2.468
Qi Chen,Yu Lan,Jian Shi,Weijie Liu,Bo Zhu,Dong Sun,Shunshan Duan
Sediment cores were collected from four outlets in the Pearl River Estuary (Guangdong Province, China) and dated using the210Pb method to investigate the pollution history of the area due to its relatively stable sedimentation status and hydrographic conditions in recent decades. The ages of the sediment cores were dated over 40 years (1968–2015). The concentrations at the four outlets ranged from 2.21 to 48.52 ng g−1dw for nonylphenol and were non-detectable for 23.64 ng g−1dw for bisphenol A (BPA), which exhibited a decreasing trend from north to south as well as seaward. The fluxes (2.84 to 112.91 ng cm−2yr−1and non-detectable to 59.33 ng cm−2yr−1for nonylphenol and bisphenol A, respectively) stabilized in the 1980s to 1990s due to the construction of sewage treatment systems. The fluxes increased again in the 21st century, which reached a peak ca. 2010 but declined in recent years due to the establishment of regulations and the decreasing number of industrial enterprises. Fluctuations in the pollution composition coincided with industrial development and governmental policies.Keywords:nonylphenol;bisphenol A;dry mass sedimentation rates;historical trends;Pearl River Estuary
研究领域:
环境科学
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生态学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2018
·
IF 6.735
Limin Hu,Guangshan Zhang,Meng Liu,Qiao Wang,Peng Wang
In this study, a novel Co 3 O 4 -Bi 2 O 3 catalyst was synthesized using a microwave-assistant method, and the corresponding characteristics were studied through XRD, SEM, and N 2 adsorption. As a peroxymonosulfate (PMS) activator, the catalytic activity of the synthesized catalyst was evaluated on Bisphenol A (BPA) removal, and the result showed that Co 3 O 4 -Bi 2 O 3 catalyst promoted BPA degradation, where 100% BPA was degraded within 15 min under the condition of [catalyst] = 0.1 g·L −1 and [PMS]/[BPA] molar = 5. The Co 3 O 4 -Bi 2 O 3 /PMS system presented a good catalytic activity when the solution pH varied from 3.0 to 11.0. Under the different concentrations of various inorganic anions in the Co 3 O 4 -Bi 2 O 3 /PMS system, Cl − showed an inhibited effect at low concentration and a promoted effect at high concentration. CO 3 2− showed a slight inhibited effect, while H 2 PO 4 − showed a considerable inhibited effect. Additionally, both NO 3 − and SO 4 2− showed a negligible effect on BPA removal. For the real water bodies, both the drinking water and tap water showed a slight decrease in degradation efficiency of BPA but a distinctly negative effect on BPA mineralization, which might be contributed to the competition between BPA and indigenous organic matters in the two water matrices for their oxidation by radical species. The quenching experiment was enforced and it was found that both SO 4 − and OH on the surface-bound of catalyst were the main active radicals in this system. Overall, the Co 3 O 4 -Bi 2 O 3 catalyst as a PMS activator is a promising catalyst in PMS activation for sulfate radical-based wastewater treatment.
研究领域:
环境科学
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化学工程
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JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Guojuan Qu,Peng Jia,Shuai Tang,Md. Nahid Pervez,Yixiong Pang,Bin Li,Chengjin Cao,Yaping Zhao
Understanding the role of intrinsic defects and nonmetallic heteroatom doping defects in activating peroxymonosulfate (PMS) and subsequently degrading endocrine-disrupting compounds is crucial for designing more efficient carbon catalysts. Therefore, we synthesized N-rich carbon nanosheets (NCs) through pyrolysis of a glutamic acid and melamine mixture and utilized them to activate PMS for bisphenol A (BPA) degradation. Different weight ratios of the above mixtures were allowed for manipulating NCs' defect level and N configuration. The reaction rate constant ( k ) was significantly positively correlated with the pyridinic and pyrrolic N content, and negatively and weakly positively correlated with graphite N and intrinsic defects, respectively. These findings suggest pyridinic and pyrrolic N, rather than graphitic N and intrinsic defects, enhance PMS activation to generate reactive oxygen species (specifically O •–2 and 1 O 2 ) and oxidize BPA. The NC-activated PMS system with the highest N content (17.9 atom%) demonstrated a remarkably high k (0.127 min −1 ) using minimal concentrations of PMS (0.4 mM) and NC (0.15 g/L), highlighting the system's efficiency. Excess halide anions led to significantly increased k with only a limited formation of trichloromethane (disinfection byproducts) in presence of 100 mM Cl − . This study offers novel perspectives on identifying catalytic sites within N-doped carbonaceous materials .
研究领域:
环境科学
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材料科学
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2023
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IF 4.7
Tunmise Ayode Otitoju,Yun Bai,Yaxiong Tian,Zhongmin Feng,Yun Wang,Xia Zhang,Ting Sun
Herein, we present a novel polyvinylidene fluoride/vanadium-titanium dioxide (PVDF-TiO 2 /V) membranes prepared using LBL self-assembly. The membranes were tested for ultrafiltration of bovine serum albumin solution and photodegradation of SMX solution. The neat PVDF membrane was endowed with photocatalytic function due to the synergistic interaction of TiO 2 and V. The structure and morphology of PVDF-TiO 2 /V membranes were characterized using a variety of techniques, showing that TiO 2 /V particles had been successfully integrated on the membrane surface. By increasing the number of TiO 2 /V layers, contact angle tests demonstrated that the membranes hydrophilicity has been significantly improved. The FTIR result demonstrated that the TiO 2 /V was affixed to the surface of the PVDF membrane by interfacial interactions. The thermal property of the PVDF membrane was also improved with the assembly of TiO 2 /V on the membrane surface. The PVDF-TiO 2 /V membranes maintained a high BSA rejection of 99.4 % and FRR of 97.4 % while showing a water flux up to 390.07 kg m -2 h −1 , which is ∼1.5 times higher than that of neat PVDF membrane. Specifically, the membranes were capable of degrading SMX under visible-light. The photocatalytic activity for SMX increased with the number of TiO 2 /V layers, attaining the highest value with four self-assembled TiO 2 /V layers. The reaction rate of the optimum membrane was 11.57-fold compared to the neat membrane under visible-light. Furthermore, 95.9 % degradation efficiency was achieved, even after six cycles. More importantly, BPA, MO, and MB could be photodegraded using the PVDF-TiO 2 /V membranes. Compared to using bulk or powdered photocatalysts, the PVDF-TiO 2 /V membrane is more practical and promising for wastewater remediation due to its many advantages including better long-term stability, ability to endure pollutant degradation, low cost, and environmentally friendly.
研究领域:
环境科学
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材料科学
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水处理
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高影响因子
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
·
2020
·Vol. 105
·期 6
·882-891
·
IF 1.657
Shen Jian,Li Xueying,Wang Xinze,Feng Jimeng,He Xiaojuan,Jiang Shiyi,Zhou Ailing,Ouyang Xiaoyan
On-site sampling analysis and laboratory-scale experiments were conducted to study the pollution status and release potential of EDCs in Erhai Lake. We found that nitrogen and phosphorus pollution in Erhai Lake sediment were both at a high level, as well as EDCs pollution. The concentrations of BPA, E2α, E1, E2β, EE2, and E3 were 36.84 ng/g(DW), 13.04 ng/g(DW), 128.97 ng/g(DW), 52.57 ng/g(DW), 18.48 ng/g(DW) and 5.36 ng/g(DW), respectively. The concentrations of E2α, E1, E2β and EE2 in the bottom water were higher than the surface water due to the impact of sediment release. The results of the 20 days release test indicated that BPA release from the sediment had a greater correlation with the original concentration and the particle size of sediment, while the steroid EDCs had no obvious correlation with these two factors, probably due to the difference in hydrophobicity between them. Under hydraulic disturbance and aerobic conditions, the release process of EDCs was accompanied by a large amount of microbial degradation, and degradation amount > released amount. BPA was released quickly, 9.56% was released in 20 days, but only 3.37% of steroid EDCs released. In comparison, the release process of steroids was longer and posed a greater threat to aquatic ecology.
研究领域:
环境科学
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生态学
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PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Yaxin Sun,Xinying Wang,Yuanyuan Zhou,Junhong Zhang,Weiqi Cui,Enyin Wang,Juan Du,Bo Wei,Xia Xu
Human exposure to bisphenol A (BPA) is unavoidable in daily life. Recently, research has showen that BPA could induce oxidative imbalance, thereby causing reproductive toxicity and liver dysfunction. Accumulated evidence has demonstrated that metformin possesses strong anti-oxidative properties. This study aimed to study the mechanism underlying the hepatic-protective effect of metformin on liver injury induced by BPA in rats via the UPLC-MS/MS metabolomics approach. Forty-two male rats were randomly divided into six groups ( n = 7), namely the saline group (control), the corn oil group (vehicle), the metformin group (Met), the bisphenol A group (BPA), the bisphenol A and metformin group (BPA + Met), and the bisphenol A and diammonium glycyrrhizinate (positive control) group (BPA + DG). Serum was collected for biochemical analysis and metabolomics, and liver tissue was collected for histopathology and metabolomics in each group. We found that metformin could significantly reduce the levels of liver function enzymes (ALT, AST and GGT) and ameliorate inflammatory cell infiltration and hepatocyte necrosis induced by BPA. On the other hand, metformin could significantly enhance the total antioxidant capacity in BPA rats. Notably, metabolomics data indicated that the principal altered metabolic pathways based on the 26 differential metabolites in liver tissue, and 21 in serum among vehicle, BPA and BPA + Met groups, respectively, including cysteine and methionine metabolism, glutathione metabolism, and arginine biosynthesis and purine metabolism. Additionally, metformin significantly increased cystathionine β synthase (CBS) and cystathionine γ lyase (CSE), thus reducing serum levels of homocysteine and increasing hepatic levels of cysteine and glutathione in BPA-treated rats. Overall, this study's results provided new insights into the role and mechanism of metformin in BPA-induced liver injury in rats.
研究领域:
药理学
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毒理学
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代谢组学
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肝病学
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PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2019
·
IF 3.78
Fusheng Liu,Jiao Guo,Penghui Zhao,Mingkai Jia,Mengshuai Liu,Jun Gao
In this paper, several succinimide-based ionic liquids (SIILs) were developed and structurally characterized. They were used as multifunctional and sustainable media for selective conversion of polycarbonate (PC) into bisphenol A (BPA) via methanolysis method. The catalytic behaviors of SIILs to the reaction, including the effects of SIIL structures, effects of reaction parameters, catalyst reusability, and interaction between SIIL and CH 3 OH were studied in detail. The [HDBU][Suc] comprising a 1,8-diazabicyclo[5.4.0]undec-7-ene cation and a succinimide anion exhibited superior performance compared to previous catalysts, and it afforded a complete depolymerization of PC with 96% BPA yield under mild conditions of 70 °C for 2 h in the absence of organic solvents and metal ions . The [HDBU][Suc] was easy to recycle and showed satisfactory reusability. Finally, a plausible mechanism for [HDBU][Suc]-catalyzed methanolysis of PC was presented in depth.
研究领域:
化学工程
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环境科学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Rui Ji,Zhuzhu Zhang,Lechen Tian,Liujun Jin,Qingfeng Xu,Jianmei Lu
A novel BiOI-incorporated NH 2 -UiO-66 composite photocatalyst, NH 2 -UiO-66@BiOI, was prepared using an in-situ successive ion-insertion method. The in situ grown BiOI nanosheets exhibited an ultrathin structure and were uniformly dispersed on NH 2 -UiO-66. The formation of tight heterojunctions, characteristics of enhanced visible light absorption and availability of abundant exposed active sites facilitated the efficient activation of peroxymonosulfate and the rapid degradation of Bisphenol A in water (12 min). Surprisingly, the photocatalyst maintained a fast degradation rate of Bisphenol A under the interference of different conditions. The research explored the charge transfer pathways and radical species between the heterojunction components, indicating that the heterojunction type of the NH 2 -UiO-66@BiOI was Z-scheme. In addition, the degraded intermediate components and high mineralization rate indicated that Bisphenol A was deeply degraded. In conclusion, this study synthesized metal–organic framework-based photocatalysts through a simple preparation method, which has potential application value in the rapid degradation of bisphenol A.
研究领域:
材料科学
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环境科学
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高影响因子
ACS ES&T Water
·
2025
·
IF 4.3
Xin-Run Sun,Wan-Song Zong,Lingqiang Kong,Xiang Chen,Mei-Yan Liu,Su-Chun Wang,Peng-Fei Xia,Xian-Zheng Yuan,Li-Juan Feng
Bisphenol A (BPA) is a pervasive environmental contaminant known for its detrimental effects on human health. However, its impact on multiple generations of microorganisms and the biogeochemical cycles they mediate, particularly at environmentally relevant concentrations, remains poorly understood. This study explores the effects of BPA on Roseovarius nubinhibens, a crucial bacterium in the global sulfur cycle, under both short-term (F0 generation) exposure at the observed-effect concentration (26 mg/L) and long-term (F20 generation) exposure at an environmentally relevant concentration (0.06 mg/L). Short-term exposure to the observed-effect concentration significantly inhibited bacterial growth by 12.9%, while long-term exposure at the environmentally relevant concentration induced notable morphological changes without affecting growth. BPA at the observed-effect concentration also disrupted extracellular polymeric substance (EPS) production and protein structures, particularly in the soluble-EPS (S-EPS) fraction, leading to impaired bacterial flocculation. Additionally, BPA at both exposure levels decelerated the conversion of dimethylsulfoniopropionate (DMSP), with the observed-effect concentration particularly affecting the cleavage pathway, reducing dimethyl sulfide (DMS) production. This study provides the first direct experimental evidence that BPA disrupts the metabolic equilibrium of sulfur cycling. These findings underscore the need for deeper exploration of BPA’s environmental risks, especially at environmentally relevant concentrations, and its potential to interfere with microbial-driven sulfur biogeochemistry.
研究领域:
环境微生物学
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生物地球化学
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海洋微生物学
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毒理学
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微生物生态学
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高影响因子
危险品化学品经营许可证（带存储）