SCIENCE OF THE TOTAL ENVIRONMENT
·
2017
·
IF 4.9
Nai-Xian Feng,Jiao Yu,Ce-Hui Mo,Hai-Ming Zhao,Yan-Wen Li,Bing-Xiao Wu,Quan-Ying Cai,Hui Li,Dong-Mei Zhou,Ming-Hung Wong
Phthalic acid esters (PAEs) are a group of recalcitrant and hazardous organic compounds that pose a great threat to both ecosystem and human beings. A novel endophytic strain YJB3 that could utilize a wide range of PAEs as the sole carbon and energy sources for cell growth was isolated from Canna indica root tissue. It was identified as Bacillus megaterium based on morphological characteristics and 16S rDNA sequence homology analysis. The degradation capability of the strain YJB3 was investigated by incubation in mineral salt medium containing di-n-butyl-phthalate (DBP), one of important PAEs under different environmental conditions, showing 82.5% of the DBP removal in 5 days of incubation under the optimum conditions (acetate 1.2 g·L − 1 , inocula 1.8%, and temperature 34.2 °C) achieved by two-step sequential optimization technologies. The DBP metabolites including mono-butyl phthalate (MBP), phthalic acid (PA), protocatechuic acid (PCA), etc. were determined by GC–MS. The PCA catabolic genes responsible for the aromatic ring cleavage of PCA in the strain YJB3 were excavated by whole-genome sequencing. Thus, a degradation pathway of DBP by the strain YJB3 was proposed that MBP was formed, followed by PA, and then the intermediates were further utilized till complete degradation. To our knowledge, this is the first study to show the biodegradation of PAEs using endophyte. The results in the present study suggest that the strain YJB3 is greatly promising to act as a competent inoculum in removal of PAEs in both soils and crops.
研究领域:
环境微生物学
·
生物修复
·
基因组学
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DOI
PubMed
高影响因子
DESALINATION
·
2026
·
IF 9.9
Shu Bi,Huoying Tan,Shiqiang Liang,Fan Yang,Jiamei Xin,Wenbin Wang,Zhi Geng,Chi Wang
Membrane distillation (MD), a promising thermal desalination technology, faces a critical challenge in its practical deployment: membrane wetting induced by low-surface-tension contaminants, which compromises separation efficacy and long-term operational stability. To address this challenge, we conceptualize and fabricate a photo-responsive composite nanofiber membrane endowed with an intrinsic self-cleaning capability to overcome this limitation. This MoO 3 @ZIF-8/PAES-CF 3 composite membrane is architected with a hierarchical roughness and engineered to exhibit dynamic, light-gated anti-wetting behavior. The strategic integration of hydrophobic and photoactive MoO 3 @ZIF-8 nanoparticles, within a fluorinated poly (arylene ether sulfone) (PAES-CF 3 ) matrix via electrospinning yields a robust, photoactive interfacial structure that concomitantly enhances surface hydrophobicity and mechanical integrity. In direct contact membrane distillation (DCMD), the optimized membrane demonstrates exceptional performance, achieving a water flux of 21.3 L·m −2 ·h −1 while maintaining a salt rejection rate exceeding 99.9%. Crucially, the membrane shows excellent resistance to wetting induced by sodium dodecyl sulfate (SDS) under light illumination, withstanding concentrations up to 0.15 mM. Moreover, under a feed solution containing 0.1 mM SDS, the membrane maintains stable operation for 24 h. This work presents a novel strategy for designing anti-wetting MD membranes, providing a foundation for the development of environmentally responsive and adaptive separation materials.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Lin Wang,Yuyan Liu,Yiwei Zhang,Siwen Chen,Niuniu Zhang,Zefeng Wang,Haofeng Liu
With the application of plastic products, phthalates now widely occur in various environmental media. A large number of ecological risk assessment experiments have only been carried out on a single medium such as water or sediment. There are few reports of ecological risk assessments based on the phase states of phthalic acid esters (PAEs) such as the free dissolved state and the dissolved organic carbon (DOC) adsorption state. In this study, the concentrations of the free dissolved state, the DOC adsorption state, and the easily released PAEs in the sediments, as well as the dissolved organic carbon release potential and their influencing factors were calculated in the Dongzhaigang water body. The potential ecological risks posed by state-of-the-art PAEs were investigated. The average concentration of six freely dissolved PAEs in water was 0.542 (0.226–1.115) μg/L, accounting for 76.3 % of the total PAEs. The PAEs with the highest concentrations in the free dissolved state were di-n-butyl phthalate (DBP, 0.383 μg/L), followed by Di(2-ethylhexyl) phthalate (DEHP, 0.094 μg/L). The average concentration of all six PAEs (∑6PAEs) adsorbed by the DOC in the water was 0.172 μg/L, accounting for 23.74 % of all of the PAEs. The DOC-adsorbed DEHP (0.148 μg/L) accounted for about 86 % of the six adsorbed PAEs. Sediment organic carbon may affect the release potential of the DOC through changing the soluble organic carbon concentration. Most types of PAEs in water posed low risk to organisms. However, DBP posed low and medium risk to algae and crustaceans, and medium risk to fish. Medium or high risk of DEHP to algae, crustaceans and fish was observed. The high ecological risk of PAEs related to sediments were only found at S13 and S14. Generally, the potential ecological risk of PAEs in sediment was more stable than that in water bodies.
研究领域:
环境科学
·
生态学
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Bei Wu,Zhiqiang Jiang,Weidong Lei,Jie Sun,Zhi Chen
In a conventional electro-Fenton system with a single cathode, it is difficult to attain both high H 2 O 2 generation by oxygen reduction reaction (ORR) and efficient iron reduction reaction (FRR). For this study, a flow-through dual-system electro-Fenton (FT-DEF) reactor was designed to overcome this shortcoming and promote mass transfer to effectively remove dimethyl phthalate (DMP) from water. By comparing the ORR and FRR performances of four different commercial carbon electrodes, the graphite felt with the highest amount of H 2 O 2 generation was selected as the cathode of the ORR system, and the activated carbon fiber with the best Fe (III) reduction effect was selected as another cathode of the FRR system. The ORR system and FRR system operate simultaneously to form the DEF system. The FT-DEF system displayed many advantages compared with the conventional electro-Fenton (CI-ORR), presenting an improved efficiency and low energy consumption in phthalates removal. Under optimal reaction conditions, the FT-DEF system is capable to degrade 100% DMP in 20 min, which is 25% higher than the CI-ORR, while the reaction rate constant (0.271 min −1 ) is 16 times that of CI-ORR system (0.017min −1 ). In addition, the TOC removal of FT-DEF achieving 72.3% within 2 h with energy consumption of 2.35 kW h·m −3 is much better than CI-ORR that only achieves 18.3% TOC removal within 2 h with energy consumption of 8.13 kW h·m −3 . Furthermore, control parameters and mechanism of FT-DEF were investigated in detail. The main intermediate products of DMP were analyzed by UPLC-ESI-HRMS, and the possible degradation path of DMP was speculated. In addition, application of FT-DEF in three types of natural water demonstrated its universal applicability of the system.
研究领域:
环境科学
·
化学工程
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DOI
PubMed
高影响因子
Nanocomposites
·
2023
·
IF 4.6
Qiannan Cai,Danying Zhao,Hai Xu,Wenhan Xu,Hongyan Yao,Yunhe Zhang
As a key material for capacitors, high-performance polymer dielectric films still exhibit the problem of low energy storage density, which cannot meet the requirements of high-power and high-temperature conditions. Here, a sandwich-structured composite film with inner layer doped TiO2-BCB (titanium dioxide – benzocyclobutene) and outer layer doped BN-BCB (boron nitride – benzocyclobutene) nanoparticles was prepared, which exhibits reduced dielectric loss, leakage current and enhanced dielectric constant (ε) and breakdown strength (Eb). Diels-Alder reaction and radical polymerization reactions are utilized to form the entire cross-linked sandwich structure. Moreover, the thermal-induced crosslinked structure replaces the traditional multilayer structure established by Van der Waals forces, thus improving the dielectric and mechanical qualities of the film. Specifically, the sandwich structure composites achieved a large discharge energy density (4.0 J/cm3) and high charge-discharge efficiency (84%) at 150 °C and 450 MV/m, and the dielectric dissipation factor is less than 0.005. These results demonstrated that designing a cross-linked network in multilayer nanocomposite structure is a feasible method to improve the high-temperature energy storage performance of these films.
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Hong-Jia Huang,Bogui Pan,Qi-Feng Liang,Wan-Ting Zhang,Yan-Wen Li,Lei Xiang,Hai-Ming Zhao,Bai-Lin Liu,Quan-Ying Cai,Nai-Xian Feng,Ce-Hui Mo
Phthalates (PAEs) are emerging organic pollutants that threaten agroecosystems by diminishing agricultural productivity and posing risks to human health. However, traditional organic fertilizers have limited effectiveness in remediating PAE-contaminated soils, while bacterial remediation often lacks stability in heterogeneous soil environments. Here, a novel bio-organic fertilizer (N-BOF) containing the PAE-degrading Bacillus megaterium YJB3 was evaluated in pot experiments for its effectiveness in remediating PAEs-contaminated soils. Results revealed that N-BOF significantly reduced PAE concentrations in soil. At PAE levels of 20 and 100 mg/kg, N-BOF reduced DBP and DEHP concentrations by over 96 %, with a maximum reduction of 99.39 %. Additionally, N-BOF significantly enhanced soil physicochemical properties, increasing organic matter (OM), total organic carbon (TOC), cation exchange capacity (CEC), nutrient availability, and pH. N-BOF also improved the soil bacterial community, enhancing diversity, degradation capacities, and the abundance of aromatic compound-degrading bacteria. Ecological risk assessments demonstrated that N-BOF effectively mitigated PAE contamination risks, reducing the risk quotients (RQ) of DBP and DEHP to safe levels. This study provides practical strategies and theoretical insights for the sustainable remediation of PAE-contaminated soils, utilizing composting to simultaneously improve soil fertility and effectively eliminate PAEs.
研究领域:
环境科学
·
微生物学
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DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 3
·697
·
IF 4.6
Fukun Bi,Yaofei Zhang,Zhuoxuan Zhou,Lei Guo,Ziqiao Zhu,Baolin Liu,Xiaodong Zhang
Phthalic acid esters (PAEs), ubiquitous semi-volatile organic compounds (SVOCs) in indoor environments, pose adverse effects on human health. However, their degradation mechanisms and pathways remain unclear. Herein, we developed an efficient photothermal catalyst by introducing defects (oxygen vacancies, OVs) on TiO2(P25) surfaces via electron beam irradiation technology with different irradiation doses (100, 300, 500, and 700 kGy). The TiO2with defects was employed as a support to prepare Pt-TiO2catalysts for the photothermal degradation of di (2-ethylhexyl) phthalate (DEMP) and dimethyl phthalate (DMP), two representative PAEs. TiO2pre-treated with a 300 kGy irradiation dose supported the Pt catalyst (Pt-Ti-P-300) and presented the optimal catalytic performance for DEMP and DMP degradation. Characterization results confirmed that OVs were successfully introduced to the catalysts. Meanwhile, OVs induced by electron beam irradiation expanded the light absorption range and improved the generation and separation of photogenerated carriers, which significantly enhanced the catalytic activity of the catalysts for PAE degradation. Importantly, the degradation mechanism and pathway of DMP were further explored by using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and gas chromatography–mass spectrometry (GC-MS). These findings provide important insights into the electron beam irradiation-mediated regulation of catalysts and the photothermal catalytic removal of PAEs in indoor environments.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
Food Analytical Methods
·
2017
·Vol. 10
·期 11
·3565-3571
·
IF 2.038
Yue Mei-E,Lin Qiaoyan,Li Qian,Xu Jie,Jiang Ting-Fu
An integrative coupling approach of headspace in-tube microextraction (HS-ITME) and reverse-flow micellar electrokinetic capillary chromatography (RF-MECC) was proposed for determination of phthalic acid esters (PAEs). In the novel method, by placing a capillary filled with background electrolyte (BGE) of RF-MECC in the HS above the sample solution, the PAEs were extracted into the acceptor phase in the capillary. Then, the extracts were separated and determined by RF-MECC. The influence of some essential BGE components such as sodium dodecyl sulfate (SDS) and organic modifier concentrations were investigated. Extraction parameters were also systematically investigated, including the extraction temperature, extraction time, salt concentration, and volume of the sample solution. Under the optimized conditions, enrichment factors for three PAEs were 169, 2534, and 1526, respectively. The proposed method provided a good linearity, low limits of detection, and good repeatability (RSDs below 5.44%, n = 5). This method was then utilized to analyze the three PAEs in tap water, seawater, and beverage samples. The results indicated that the developed method is an excellent alternative for the PAE routine analysis in the food field.
研究领域:
分析化学
·
环境科学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Chi Wang,Xiaoxuan Zhao,Jinghui Wu,Xia Yang,Xiaochun Cui,Wenzhe Geng,Zhi Geng,Xianze Wang
Efficient utilization of renewable solar energy is attractive in the membrane separation process of water treatment. In this study, a series of tight reactive hybrid ultrafiltration membranes were fabricated by covalently grafting Ag@NH 2 -MIL-125 nanoclusters on the side chains of a poly(aryl ether sulfone) matrix containing trifluoromethyl and carboxyl groups. Due to the homogeneous introduction of functional nanoreactors with high-efficiency solar photocatalytic degradation ability, the prepared tight hybrid membranes could approach good self-cleaning anti-fouling properties under sunlight irradiation. And the optimal sample exhibited an excellent water flux recovery ratio of 99.1% after irradiated by 10 min simulated sunlight. Additionally, the tight reactive hybrid membranes displayed excellent anti-aging robustness via the use of a fluorine-containing poly matrix, maintaining the stable high pollutant retention rate during the long-term ultrafiltration separation process. This work provided a new strategy to fabricate high-performance solar-driven reactive hybrid membranes for ultrafiltration separation processes.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Xuecheng Zhang,Jun Gao,Qinghua Chu,Haixia Lyu,Zenghong Xie
A novel hybrid material (ZIF-7-NH 2 @MIP) combining high adsorption capacity of amino-functional zeolitic imidazolate framework and specific recognition ability of dual-template molecular imprinted polymer was synthesized. The prepared ZIF-7-NH 2 @MIP was characterized by a range of instrumental techniques and combined with high performance liquid chromatography for the detection of four phthalate esters. The limits of detection of the four PAEs were below the maximum residue limit of GB 3838-2002 in China, ranging from 0.04 to 0.08 μg L −1 . The recoveries of the three real samples of mineral water , carbonated drinks and pulpy juices spiked at 10 μg L −1 were 88.68–98.58% and the relative standard deviations was 1.19–3.40%. The above results showed that the obtained absorbent exhibited many advantages for extracting analytes in aqueous solution especially complex environment due to the combination of the superior hydrothermal and large specific surface area of the amino-functionalized ZIF-7-NH 2 and the specific identification of the dual-template molecular imprinted polymer.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2026
·
IF 3
Yi-Yang Fang,Hai-Yan Liu,Zhi-Guo Shi
Phthalates (PAEs) are a class of widely used plasticizers known for their reproductive toxicity and detrimental effects on liver and kidney function. The objective of this study is to develop a dispersive solid-phase extraction (d-SPE) method for the enrichment and detection of PAEs in water samples. To achieve effective enrichment and operational convenience, a type of fluorocarbon chain derived silica (abbreviated as FC-silica), which can be dispersed well into aqueous systems, was synthesized. By polar–polar and hydrophobic interactions, the FC-silica was used for extracting six kinds of PAEs, including diethyl phthalate (DEP), diisobutyl phthalate (DIBP), dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), dimethyl phthalate (DMP) and di-n-octyl phthalate (DNOP), successfully. A series of parameters that may influence the extraction were studied in detail. Gas chromatography with flame ionization detection (GC-FID) was employed for the analysis. Under optimal conditions, linearity ranges from 1 to 100 µg mL−1 (R2 > 0.999) and limits of detection from 0.05 to 0.3 µg mL−1 were achieved for the studied PAEs. By the developed FC-silica based d-SPE and GC-FID method, DEP, DIBP, DBP and BBP ranging from 0.089 to 0.187 µg mL−1 were detected in the real lake water sample, while DMP and DNOP were not detected. The present study provided an efficient and convenient method for the analysis of PAEs.
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DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Yu Yang,Yuanfang Fan,Jinkai Zhang,Shiqiang Liang,Chi Wang,Zhi Geng,Zhongmin Su,Mingxin Huo
In light of the challenges posed by heightened water viscosity and aggravated membrane fouling at low temperatures, this study proposes a novel approach to enhance ultrafiltration (UF) performance. By integrating micro/nano bubbles (MNBs) with UF membrane modification, we aim to mitigate the adverse effects of increased viscosity of feed solution and reduce membrane fouling at low temperatures. Specifically, the utilization of carboxyl-modified poly (aryl ether sulfone) UF membranes enhances water flux and fouling resistance. Our findings indicate that the coupled system maintains comparable flux at both low (5 ± 1 °C) and room (22 ± 1 °C) temperatures, indicating excellent UF permeate performance under low temperatures. Notably, when applied to the cyclic filtration of secondary effluent during winter, the permeate flux of the proposed system surpasses that of the commercial PES UF membrane system by 184.82 %. After three filtration cycles, the permeate flux remains 233.19 % higher than that of the commercial PES UF membrane system, with flux recovery rates ( F RR ) exceeding 90 % in each cycle. These results demonstrate the efficacy of our strategy in addressing the challenges of low-temperature UF, achieving efficient separation processes. Our coupled system represents a promising advancement, offering novel insights and practical solutions for membrane-based water treatment in low-temperature environments.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）