CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Jianhua Qu,Zhuoran Li,Zhihuan Wu,Fuxuan Bi,Shuqi Wei,Min Dong,Qi Hu,Yifan Wang,Hui Yu,Ying Zhang
Currently, functional materials-based soil remediation focused on the stabilization of heavy metals and organics to inhibit their migration, however, the possible second release of these pollutants caused by soil condition variation attracts broad attention. Herein, β-cyclodextrin functionalized magnetic sodium alginate microspheres (MSA-CD MW ) were fast and facilely synthesized through microwave-assisted one-pot method for synchronous detachment of Pb and BPA from contaminated soil. The obtained MSA-CD MW presented wide pH adaptability and fast capture for Pb(II)/BPA with superior adsorption capacity of 369.03/165.37 mg/g. Furthermore, the effects of material dosage and soil pH on the remediation ability of MSA-CD MW were explored in detail. After adding 5% MSA-CD MW into the contaminated soil for 3-round successive remediation (12 h for each round), the amount of extractable Pb and total BPA was simultaneously decreased by 56.30 and 0.78 mg/kg, respectively. Meanwhile, the quantity of exchangeable and carbonate bound Pb was significantly decreased to 7.13% with transformation into relatively stable fractions. A series of characterizations revealed that ion exchange, pore filling, complexation, and electrostatic attraction were responsible for Pb binding, while MSA-CD MW could capture BPA through host-guest interaction by the hydrophobic cavity of β-cyclodextrin. Additionally, recovery and floatation results revealed that the MSA-CD MW could be easily separated from the soil using magnets even at extreme drying and wetting conditions, thus providing a novel, fast, and eco-friendly strategy for effective remediation of heavy metals and organics contaminated soil.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
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IF 2.7
Liqing Li,Xiumin Zhong,Minghao Zheng,Panwang Wu,Fei Yu,Shaobo Ouyang,Jie Ma
As emerging pollutants, microplastics have attracted significant attention in recent years. To evaluate the potential carrier effect of degradable microplastics on coexisting contaminants, we used UV light at different wavelengths, 254 nm and 340 nm, to simulate laboratory-accelerated aging and natural noon direct solar aging, respectively. A study was carried out to analyze the adsorption and desorption properties of polylactic acid (PLA) on bisphenol A (BPA) before and after aging. Compared to the UV-340 nm aged PLA (Aged-PLA 2), the UV-254 nm aged PLA (Aged-PLA 1) showed a significant yellowing phenomenon, the original larger PLA particles cracked into smaller ones, and more pronounced changes were observed in surface functional groups and physicochemical properties. The zeta potential of Aged-PLA 1 exhibited a decrease from −24.75 mV to −30.35 mV. By contrast, there was no fixed trend in the Zeta potential changes of Aged-PLA 2. In adsorption experiments, the original PLA and Aged-PLA 2 showed similar adsorption capabilities for BPA, which were higher than those of Aged-PLA 1. Desorption experiments showed that aged PLA desorbed from BPA to an extent greater than that of the original PLA, indicating that the aged PLA had a greater capacity for the pollutant to migrate. The desorption of BPA was found to be higher in simulated intestinal fluid than in ultrapure water, suggesting that PLA adsorbed on BPA faces a higher ecotoxicological risk in organisms. Overall, these results will contribute to the comprehension of the carrier effect and potential ecological risk of MPs on coexisting pollutants.
研究领域:
环境科学
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生态学
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材料科学
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产品关联
DOI
高影响因子
Foods
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2025
·Vol. 14
·期 1
·133
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IF 5.1
Chao Wang,Xiangchuan Wu,Xinhe Lin,Xueting Zhu,Wei Ma,Jian Chen
The use of nanozymes for electrochemical detection in the food industry is an intriguing area of research. In this study, we synthesized a laccase mimicking the MnO2@CeO2nanozyme using a simple hydrothermal method, which was characterized by modern analytical methods, such as transmission electron microscope (TEM), X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy (EDX), etc. We found that the addition of MnO2significantly increased the laccase-like activity by 300% compared to CeO2nanorods. Due to the excellent laccase-like activity of the MnO2@CeO2nanozyme, we developed an electrochemical sensor for the detection of hazardous phenolic compounds such as bisphenol A and catechol in red wines by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). We used the MnO2@CeO2nanozyme to develop an electrochemical sensor for detecting harmful phenolic compounds like bisphenol A and catechol in red wine due to its excellent laccase-like activity. The MnO2@CeO2nanorods could be dispersion-modified glassy carbon electrodes (GCEs) by polyethyleneimine (PEI) to achieve a rapid detection of bisphenol A and catechol, with limits of detection as low as 1.2 × 10−8M and 7.3 × 10−8M, respectively. This approach provides a new way to accurately determine phenolic compounds with high sensitivity, low cost, and stability.
研究领域:
食品科学
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生物化学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
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2025
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IF 7.3
Chao Huang,Yilin Liu,Jing Lu,Xunzhi Deng,Zhoubin Liu,David P. Molloy,Langtao Xiao,Zhoufei Luo
Bisphenol A (BPA), an emerging endocrine-disrupting chemical found in irrigation water, soil, and agricultural plastic mulch, presents potential exposure risks to pepper plants ( Capsicum annuum L.). This study investigated BPA impact, observing that BPA accumulates in a concentration-dependent manner, with highest levels in roots and lowest in fruit. High BPA exposure decreased photosynthetic pigment content, reduced stomatal size, caused chloroplast dilation, and increased reactive oxygen species and malondialdehyde accumulation, disrupting hormone balance in leaves with a 2.3-fold increase in abscisic acid content under 100 mg/kg BPA treatment. Integrated multi-omics analyses revealed that BPA toxicity operates through interference with galactose metabolism, starch-sucrose metabolism, plant hormone signaling, and glutathione metabolism pathways. Key molecular responses included significant downregulation of photosynthesis-related genes and substantial metabolic perturbations, notably an 8.1-fold reduction in uridine diphosphate fructose and 10.6-fold accumulation of indole-3-ethanol. By employing an integrated multi-omics approach, this study provides a comprehensive mechanistic understanding of BPA phytotoxicity that extends beyond conventional physiological observations. The findings offer novel insights into the molecular regulatory networks underlying plant stress responses to endocrine-disrupting chemicals.
研究领域:
植物学
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环境科学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2012
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IF 3.461
Ruixiong Huang,Zhanqiang Fang,Xiaomin Yan,Wen Cheng
In this study, the Fe 3 O 4 magnetic nanoparticles (MNPs) were synthesized as heterogeneous catalysts to effectively degrade bisphenol A (BPA). The properties of the synthesized catalysts were characterized by Brunnaer–Emmett–Teller (BET), X-ray powder diffraction (XRD), X-ray photoelectron spectrometry (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The results indicated that the Fe 3 O 4 MNPs appeared to be roughly spherical shapes and their average size was 10–20 nm. The catalytic capacity of MNPs in US + Fe 3 O 4 + H 2 O 2 system with different pH conditions, H 2 O 2 concentrations and MNPs doses was investigated. It was found that the OH radicals were promptly generated due to the catalysis of the Fe 3 O 4 MNPs. BPA could be degraded within a wide pH range from 3 to 9, and the degradation efficiencies were remarkably enhanced by ultrasound. The apparent rate constants were 8.31 × 10 −3 , 7.96 × 10 −3 and 5.64 × 10 −3 min −1 , respectively, when the pH values were 3, 7 and 9, respectively. The removal efficiencies of BPA were all over 95%. About half total organic carbon (TOC) in solution was eliminated under neutral condition by sono-Fenton process. Furthermore, the results of stability and reusability demonstrated that the Fe 3 O 4 MNPS were promising in the treatment of wastewater with refractory organics.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2021
·
IF 7.086
Ran Ma,Sai Zhang,Xuewei Liu,Mingtai Sun,Jianzhong Cao,Jian Wang,Suhua Wang,Tao Wen,Xiangke Wang
Two-dimensional (2D) bismuth-based semiconductors have aroused intensive concern owing to their prominent photocatalytic activity for organic pollutants removal . In this work, a facile strategy for introducing oxygen vacancy in Bi-based oxyiodides (Bi x O y I z ) sheet-like architectures to activate molecular oxygen was proposed. The structure, photoelectric properties and visible light (λ > 420 nm) induced photocatalytic activities of these samples for decomposition of bisphenol A (BPA) were systematically characterized and evaluated. The as-prepared Bi 7 O 9 I 3 with a feeding Bi/I molar ratio of 1:1 exhibited the best photocatalytic activity comparable to those of similarly synthesized Bi 7 O 9 I 3 with other molar ratios and BiOIO 3 catalysts. The optimal Bi 7 O 9 I 3 achieved excellent photocatalytic activity with 99.6 % degradation efficiency of BPA within 20 min and superior structural stability with 95.1 % degradation retention over 5 cycling tests. In addition, the resulting Bi 7 O 9 I 3 sample displayed a high mineralization efficiency of BPA. Importantly, the plenty of oxygen vacancies (V o s) exsiting in Bi 7 O 9 I 3 played the dominant role in both accelerating electron transfer and activating molecular oxygen to facilitate the generation of superoxide radical (O 2 ·- ) and singlet oxygen ( 1 O 2 ), thereby proceeding oxidative degradation of BPA molecules during photoreactions. The efforts and attempts are also extendable to synthesis other 2D photocatalysts, providing potential for effective charge-carrier separation and molecular oxygen activation.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
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2020
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IF 5.778
Tianli Tong,Ruili Li,Jianfei Chen,Yanchu Ke,Shuguang Xie
Bisphenol A (BPA) is one of the widely detected endocrine disrupting chemicals in coastal sediment . Biodegradation is a vital pathway of BPA elimination in sediment. However, the impact of vegetation on BPA degradation in coastal sediment is still unclear. In this study, the differences of BPA biodegradation and the functional microbial community and metabolic pathway were explored between mangrove forest and mudflat sediments. A nearly complete BPA attenuation was detected in 4 days in mudflat sediment but 8 days in forest sediment. Bacterial abundance varied greatly in different sediment types. Bacterial community structure changed with BPA biodegradation, dependent on sediment type. During the degradation, the proportions of Alphaproteobacteria and Gammaproteobacteria were higher in BPA amended microcosms than in un-amended microcosms. With BPA biodegradation, a substantial increase in Novosphingobium and Croceicoccus occurred in forest sediment and mudflat sediment, respectively. Additionally, two divergent BPA biodegradation pathways were proposed based on functional annotation and KEGG pathway database. The abundance of functional genes also varied with BPA biodegradation, dependent on sediment type. Gene pcaGH decreased, while genes ligK and pcaD increased in both sediment types. Gene pcaB showed a remarkable increase in forest sediment but a decrease in mudflat sediment. Therefore, BPA degradation and the associated microbial community and metabolic pathway differed between mudflat and mangrove forest sediments.
研究领域:
环境科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2013
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IF 2.894
Heng Lin,Jie Wu,Hui Zhang
The removal of bisphenol A (BPA) by a novel “electro/Fe 3+ /peroxydisulfate” process is reported in this study. The effects of initial pH, electrolyte concentration, Fe 3+ concentration, peroxydisulfate (PDS) concentration and current density were investigated. The results indicated that the removal efficiency of BPA declined with the increase of initial pH and electrolyte concentration, but increased with an increase of Fe 3+ concentration and current density. The BPA degradation efficiency was improved significantly when the PDS concentration was increased from 1 to 10 mM, but further PDS increase had little effect. BPA was almost completely removed after 60 min reaction and a TOC removal efficiency of 94.3% was achieved when the reaction time was extended to 120 min.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
WATER RESEARCH
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2019
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IF 7.913
Yang Wu,Yu Wang,Tao Pan,Xin Yang
The degradation of tetrabromobisphenol A (TBBPA), one of the most widely used brominated flame retardant , was evaluated during peroxymonosulfate (PMS) oxidation. TBBPA degradation was pH-dependent, with peak degradation rate constants occurring at pH 8.0–9.0, which was distinct from some other phenolic compounds . Singlet oxygen and radicals were found to play negligible roles in TBBPA degradation. TBBPA oxidation by PMS mainly proceeded via a direct oxidation pathway and the in-situ formed HOBr was found to greatly accelerate its degradation rates. The values of species-specific second-order rate constants for the reactions of PMS with the TBBPA k HSO5 − +TBBPA , k HSO5 − +TBBPA− and k HSO 5− +TBBPA2− were determined to be (1.11 ± 0.84) × 10 −2 , (8.05 ± 2.31) × 10 −2 , and (1.34 ± 0.25) × 10 −1 M −1 s −1 , respectively, while the reaction rate constants for HOBr/OBr − with TBBPA k HOBr+TBBPA , k HOBr+TBBPA− , k HOBr+TBBPA2− and k OBr−+TBBPA2− were determined to be (9.38 ± 2.10) × 10 3 , (1.59 ± 0.56) × 10 5 , (8.22 ± 0.41) × 10 6 , and (1.81 ± 0.12) × 10 6 M −1 s −1 , respectively. The bromine mass balance analysis showed that bromide ion and HOBr/OBr − occupied 19.5% of total Br and brominated organic compounds accounted for the remaining percentages at pH 7.0. No formation of bromate was observed. Based on the identified products, a reaction pathway was proposed, which included oxidation, β-scission, hydroxylation, and dimerization reaction pathways. The results indicate that unactivated PMS is useful for the remediation of TBBPA contaminated water .
研究领域:
环境科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2017
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IF 6.035
Jinxin Fan,Jianquan Luo,Yinhua Wan
Enzyme purification and subsequent immobilization usually require multiple steps and consume plenty of chemicals. Traditional dipping incubation operation is lengthy and the interior of porous carrier is not fully exploited due to the diffusion barrier . To solve these problems, one-step enzyme purification and immobilization was developed based on membrane chromatography concept. A membrane adsorber was prepared by polydopamine coating on a PVDF microfiltration membrane (or on a cheap and disposable cellulose filter paper) and subsequent polyethyleneimine grafting, without any solvent usage. Laccase was selectively immobilized on such membrane adsorber (enzyme activity: 39.9±4.4 U/mL; expressed activity: 19.6±3.0%) by directly capturing it from a crude fermentation broth without pH adjustment under flow-through mode. The immobilized laccase had a high purity of 92.2%, while the membrane permeability decreased due to the adsorption of laccase and impurities (“membrane fouling”). Thanks to the dominant convective transport, the enzyme loading was high and much faster than that by dipping incubation (5 min vs. 80 min). Moreover, enzyme reloading on membrane adsorber was easily realized by reversible desorption-adsorption process. The constructed biocatalytic membrane exhibited a commendable reusability for bisphenol A (BPA) removal only driven by its gravity.
研究领域:
生物化学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
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2018
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IF 4.358
Lun Lu,Baoliang Chen
A high-efficient, low-cost, and practical biochar implementation method is desired to extend biochar's powerful adsorption performance for environmental remediation. This study presents novel results with advanced biochar application by integrating biochar with biofilter for the removal of bisphenol A (BPA) from stormwater . Biochars derived from wood dust (BC0) at different pyrolytic temperatures (300, 500, and 700 °C, referred as, BC300, BC500, and BC700, respectively) were characterized and investigated for their adsorption of BPA under different pH levels and humic acid (HA) concentrations by batch sorption and fixed-bed column experiments. Microcosm biofilters vegetated with phragmites australis and amended with different biochars were constructed and used for BPA removal under different hydraulic loading rates (HLRs). Compared with other biochars, BC700 showed a high adsorption rate and capacity due to high specific surface area and pore volume. As a consequence, fixed-bed columns amended with BC700 can remove BPA more efficiently than columns with BC0, BC300, and BC500 from synthetic stormwater, though the treatment performance was affected relatively by pH change and HA concentration. A high correlation ( r 2 = 0.899) between the breakthrough time and the product of adsorption rate ( k 2 ) and capacity ( Q max ) was found, which suggests that batch sorption experiments could be an efficient tool for prediction of breakthrough time. The BPA removal efficiency of microcosm biofilters amended with BC0, BC300, BC500 and BC700 for real stormwater containing 200 μg/L BPA at HLR of 40 cm/h averaged 4.1, 10.8, 80.3, and 98.4%, which were about 6, 15, 115, and 141 times, respectively, compared to bilfitlers without biochar amendment. Moreover, biochar amendment not only enhanced the BPA removal but also promoted phragmites australis growth, elevated nutrients and increased the E. coli removal efficiency. Hence, biochar-amended biofilters could be a promising approach for enhancing the elimination of endocrine-disrupting chemicals such as BPA from aqueous environments.
研究领域:
环境科学
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污染治理
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
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IF 5.31
Hao Wu,Xiaojun Niu,Jia Yang,Caihong Wang,Meiqing Lu
The retention efficiencies of bisphenol A (BPA) and norfloxacin (NOR) by three different ultrafiltration (UF) membranes prepared in laboratory were investigated, together with the influencing factors such as initial concentration, ionic strength, pH, membrane fouling and trans-membrane pressure (TMP). The results show that the effects of initial concentration and ionic strength on retentions is minor for both BPA and NOR. BPA retentions substantially decreased as pH value approached to its p K a value, and for NOR they first increased and decreased afterwards with pH change. The retentions are all improved after HA fouling because of the HA block in the membrane pores and the developed cake layer, and it can be concluded that between pollutants and HA there exists not only adsorption with each other but also competitive adsorption for sites on membranes. The retentions of both BPA and NOR decrease with increasing pressure. Generally, the effects of these factors on BPA and NOR retention are different and the retentions of the three UF membranes for NOR always remain at a low level, which needs further investigation.
研究领域:
环境科学
·
水处理工程
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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）