Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Zhang Jinlong,White Jason C.,Lowry Gregory V.,He Jinglei,Yu Xuefeng,Yan Chuanhao,Dong Liang,Tao Shu,Wang Xilong
Enzyme-catalyzed biodegradation is an emerging green strategy for environmental remediation, although challenged by high cost and poor robustness. Herein, natural biopolymer (cellulose)-derived hydrogels concurrently doped with β-cyclodextrin and montmorillonite nanosheets that are synthesized in one-step demonstrate exceptional pollutant affinity and mechanical strength. Laccase is then stably and effectively assembled onto the hydrogels by a facile strategy based on charge-assisted H-bonding, which can be extended to other enzymes. The advanced laccase-assembled hydrogels display excellent stability and increased degradation activity achieved by strong substrate capture and rapid electron transfer. The laccase-assembled hydrogels exhibit significantly improved removal (62-fold) and degradation (52-fold) performance compared to free laccase for diverse organic pollutants (e.g., polycyclic aromatic hydrocarbons) in real wastewater. This enhanced performance is maintained despite the presence of heavy metals, other organic chemicals or dissolved organic matter. This work provides a practical strategy for designing an advanced and sustainable biodegradation tool for environmental remediation.
研究领域:
环境科学
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生物技术
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材料科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2016
·
IF 1.083
Shengji Xia,Yukun Wan,Nana Li,Yu Zhao
Despite the great advance in nano-filtration (NF) process development in various applications, its performance in water treatment is still impeded by the undesired fouling phenomenon, which is not yet fully understood nowadays. In this study, a comprehensive investigation on the fouling behavior, more specifically the combined fouling behavior with the presence of more than one type of foulant was carried out under various solution chemistries and feed hydraulic pressures. The interaction between the model organic foulant (alginate) and inorganic foulant (silica colloid) was systematically studied with nano-filtration membranes, with a more severe fouling observed in the combined fouling than individual foulants. However, the results also revealed that the commonly observed synergistic effect of combined fouling in the forward osmosis process was not present in the nano-filtration process. In addition, the solution chemistries (pH and calcium ions) and feed hydraulic pressure were also found to have certain influence on the combined fouling, especially the feed hydraulic pressure which exhibited a more pronounced impact on the flux decline than the other factors, thus in turn, affecting more on the reversibility of the membrane fouling.
研究领域:
环境科学
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化学工程
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水处理技术
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
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2024
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IF 8.1
Vahid Vatanpour,Seyed Ali Naziri Mehrabani,Ahmad Dehqan,Samira Arefi-Oskoui,Yasin Orooji,Alireza Khataee,Ismail Koyuncu
In this work, the hydrophobic polyethersulfone (PES) membrane was modified by incorporating Ti 3 AlCN MAX phase. Synthesis of Ti 3 AlCN MAX phase was performed using the reactive sintering method. The scanning electron microscopy (SEM) images showed a 3D compressed layered morphology for the synthesized MAX phase. The Ti 3 AlCN MAX phase was added to the casting solution, and the mixed-matrix membranes were fabricated by the non-solvent induced phase inversion method. The performance and antifouling features of bare and modified membranes were explored by pure water flux, flux recovery ratio ( FRR), and fouling resistance parameters. Through the modification of membranes by introducing the Ti 3 AlCN MAX phase, the enhancement of these features was observed, in which the membrane containing 1 wt% of MAX phase showed 17.7 L/m 2 .h.bar of permeability and 98.6% for FRR . Also, the separation efficiency of all membranes was evaluated by rejecting organic and inorganic pollutants. The Ti 3 AlCN MAX membranes could reject 96%, 95%, and 88% of reactive blue 50, Rose Bengal, and azithromycin antibiotics, respectively, as well as 98%, 80%, 86%, and 36% of Pb 2+ , As 5+ , Na 2 SO 4, and NaCl, respectively. Finally, the outcomes indicated the Ti 3 AlCN MAX phase was an excellent and efficient novel additive for modifying the PES membrane.
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
FUEL
·
2021
·
IF 6.609
Hongliang Qian,Donghang Yin,Beichen Qin,Licheng Li,Jiahua Zhu,Liwen Mu,Caolong Li,Bin Dong,Dechun Huang,Xiaohua Lu
Biogas-residue-based mesoporous carbons with high adsorption capacity have been successfully synthesized via a facile template-free and one-step approach by sodium amide activation and applied in the removal of organic and inorganic pollutants in wastewater for the first time in this study. A “waste” and widely available resource, biogas residue, was utilized as carbon precursor. Different mesoporous carbons were prepared by direct co-milling and activation at various conditions, among which largest surface area of 1278 m 2 /g and maximum adsorption of 556 mg/g on methylene blue were achieved, respectively. It is also verified to possess superior adsorption capacity on typical organic pollutant phenanthrene (112 mg/g) and typical inorganic pollutant N/P element (N, 113 mg/g; P, 12 mg/g). The results show that the prepared mesoporous carbons possess high and universal adsorption performance toward both organic and inorganic pollutants in wastewater. Finally, the adsorption mechanism such as the relationship between the adsorption capacities and characterization results was also discussed. The low-valued raw materials, convenient procedure, energy conservation, minimum pollution and corrosion, high adsorption capacity show feasible manufacture in industry.
研究领域:
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 SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 33
·80279-80292
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IF 5.8
Zhang Yaping,Zhang Duoxin,He Yufeng,Wang Zeyuan,Song Pengfei,Wang Rongmin
The environment and human health are in danger due to the long-term enrichment and buildup of organic pesticides, dyes, and harmful microbes in wastewater. The development of functional materials that are efficient for treating wastewater remains a significant problem. Eco-friendly hexagonal spindle-shaped Fe-MOFs (Hs-FeMOFs) were created in this study under the influence of cationic copolymer (PMSt). The mechanism of crystal growth and development of its unique morphology were described after looking into impact factors for the ideal circumstances and being characterized by XRD, TEM, XPS, and other techniques. It revealed that Hs-FeMOFs possess an enormous supply of adsorption active sites, a strong electropositivity, and the nanometer tip. Then, typical organic pollutants, such as herbicides and mixed dyes, as well as biological pollutants bacteria, were chosen to assess its efficacy in wastewater treatment. It was discovered that the pendimethalin could be quickly removed in wastewater and the removal rate reached 100% within 10 min. In separation of mixed dyes, the retention rate of malachite green (MG) reached 92.3% in 5 min and with a minimum inhibitory concentration of 0.8 mg/mL and demonstrated strong activity due to the presence of cationic copolymers. In actual water matrix, Hs-FeMOF could also play excellent adsorption and antibacterial activity. In summary, a novel, environmentally friendly MOF material with good activity was successfully created by cationic copolymer induction. It offers a fresh approach to develop functional materials in wastewater treatment.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Yanlong Wang,Jiang Xu,Kun Yang,Daohui Lin
Water scarcity is one of the most pressing global challenges and limits economic and social development. Multiple processes of current technologies for water purification are needed to meet water quality objectives due to their contaminant-specific removal capability. Here, we developed Fe 0 @SiO 2 @CaO 2 nanocomposite with three layers of core–shell structure that could achieve an array of water contaminants removal by oxidation, reduction, and flocculation. >99 % of 50 mg/L tetracycline, 20 mg/L pentachlorophenol, 450 mg/L Cd(Ⅱ), 20 mg/L Cr(Ⅵ), or 80 mg/L P (in form of PO 4 3− ) was removed by 2 g/L Fe 0 @SiO 2 @CaO 2 in 24 h. Moreover, Fe 0 @SiO 2 @CaO 2 (2 g/L) showed an excellent performance in turbidity removal (239 mg/L kaolinite suspension, removal rate > 99 %) and water decolorization (50 mg/L humic acid, removal rate > 93 %). Cd(II) and Cr(VI) could be reduced to Cd(0) and Cr(III), respectively, through electronic reduction reactions using Fe 0 and •H, which is formed during the reaction Fe 0 + 2H + →2•H + Fe 2+ ; Cd(Ⅱ) and the formed Cr(III) could coprecipitate with the formed orthosilicic acid and OH − . The removal of P was mainly resulted from the coordination with released Ca 2+ and iron compounds. Charge neutralization by nanocomposite and coagulation with the products from nanocomposite transformation were responsible for the kaolinite removal. Reduction by •H and Fe 0 , oxidation by •OH derived from the Fenton reaction, and/or coagulation accounted for the organic contaminant removal. This work provides a novel material that can be used to simultaneously remove a range of contaminants in wastewater treatment.
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
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2016
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IF 2.264
Jin Liu,Wei Lu,Hongzhang Wu,Lin Jin,Bin Hu,Lili Li,Zhenling Wang
Rice-like HT-ZnGa 2 O 4 were successfully synthesized by using commercially available Ga 2 O 3 as an in situ sacrificial templates. The composition, morphology and microstructure of rice-like HT-ZnGa 2 O 4 were characterized in detail. Rice-like HT-ZnGa 2 O 4 were found to be composed of hundreds of nanoparticles . The pH-dependent experiment results indicated that the dispersive rice-like HT-ZnGa 2 O 4 was obtained at pH 8.0. The photocatalytic degradation results showed that the rice-like HT-ZnGa 2 O 4 exhibited high photocatalytic activity and excellent stability for the photocatalytic removal of organic and inorganic pollutants in solution. Finally, the mechanism involved in the photocatalytic process have been investigated by theory and experiment analyses.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2014
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IF 6.007
Shunxing Li,Jiabai Cai,Xueqing Wu,Fengying Zheng,Xiaofeng Lin,Wenjie Liang,Jie Chen,Jianzhong Zheng,Zhanghua Lai,Tanju Chen,Licong Zhu
A novel approach to prepare double-shelled, nanostructured hollow spheres with positively and negatively charged was proposed. If the difference in isoelectric points between M x O and N y O was large enough, at a certain pH range, the inner and outer shell of double-shelled M x O@N y O hollow spheres were positively and negatively charged, respectively. A proof-of-concept was shown, using WO 3 and TiO 2 as anionic and cationic building subunits, respectively. The nanoparticles of WO 3 and TiO 2 were coated successively onto the functionalized polystyrene (PS) template beads, the resulted PS@WO 3 @TiO 2 nanocomposites were calcined at elevated temperature, and then double-shelled WO 3 @TiO 2 hollow spheres were obtained. The dispersity, morphology, size, and lattice of these hollow spheres were tested by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The presence and purity of both WO 3 and TiO 2 phases were confirmed by electron energy loss mapping analysis and X-ray diffraction analysis (XRD). The specific surface area and the average pore diameter of these hollow spheres were 53.04 m 2 /g and 8.042 nm, respectively. The photocatalytic activity for the degradation of cationic and anionic aromatic pollutants was in the order of double-shell hollow spheres WO 3 @TiO 2 > single-shell WO 3 -TiO 2 > P25, i.e., the synergistic effect of coupling TiO 2 with WO 3 on photocatalytic performance was proved by us.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Zishan Diao,Xianyin Ping,Xue Zhang,Bin Hui,Fanping Zhu,Yiqiao Zhang,Jing Wang,Yinjie Yu,Lin Zhang,Wenjia Hui,Xiaomin Xie,Xiaohan Zhang,Shuguang Wang,Xianzheng Yuan
The presence of priority and emerging contaminants in aquatic environments is a worldwide concern. This study utilized the diffusive gradients in thin-films (DGT) technique for in situ monitoring of polycyclic aromatic hydrocarbons (PAHs) and synthetic musks (SMs) in coastal waters over a year. DGT provided time-integrated and reliable pollutant measurements, outperforming grab sampling in terms of repeatability and stability. Seasonal and spatial variations in PAH and SM concentrations were observed, influenced by proximity to vehicle and maritime transport and tourist areas. Source apportionment using diagnostic ratios, positive matrix factorization, and principal component analysis indicated mixed pollutant origins. High ecological risks for certain PAHs emerged in the summer, highlighting significant seasonal threats. These findings provide critical insights for the long-term monitoring and management of PAHs and SMs, offering valuable regional data to support pollution mitigation efforts in the coastal water.
研究领域:
环境科学
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生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Science-Processes & Impacts
·
2014
·Vol. 17
·期 2
·488-494
·
IF 0
Xiaozhu Wei,Ping Gu,Guanghui Zhang,Jianjun Huang
This paper aimed to investigate the occurrence and concentrations of emerging and priority pollutants in the municipal reverse osmosis concentrate (ROC) using liquid–liquid extraction (LLE) followed by gas chromatography-mass spectrometry. The results indicated that there were varieties of pollutants, including chlorinated organic compounds, polycyclic aromatic hydrocarbons (PAHs), phthalate esters (PAEs), pharmaceutical and personal care products (PPCPs), herbicides and flame retardants, in the ROC. Most of the pollutants were quantified, and the performance of the analytical method was explored. For most of the target compounds, the mean recoveries at two concentration levels (0.17 μg L−1 and 1.67 μg L−1) ranged from 70% to 130% and the relative standard deviation (RSD) values were less than 20%, indicating excellent accuracy and precision. Typical concentrations of most of the pollutants were as low as tens or hundreds of ng L−1, whereas others were as high as several μg L−1 (such as, the concentration of 2-chloroethyl ether was 1.42 μg L−1, of caffeine was 3.73 μg L−1, and of benzyl butyl phthalate was 4.90 μg L−1).
研究领域:
环境科学
·
分析化学
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产品关联
DOI
PubMed
BIORESOURCE TECHNOLOGY
·
2024
·
IF 9.7
Shengtao Jiang,Haoyang Liu,Weixi Zhang,Ying Lu
Microbial fuel cell (MFC) is a promising device for water decontamination and energy generation. However, the correlation between power generation and pollutant degradation has not been clarified. Herein, a ruthenium–activated carbon (Ru–AC) bioanode was constructed for chlorobenzenes (CBs) treatment. The pollutant tolerance was improved by Ru–AC anode, and the minimum removal efficiencies of CB and ortho -dichlorobenzene ( o -DCB) reached 75.1 % and 69.3 %, respectively, which were considerably higher than those of other MFCs (16.3 %–39.7 %). Correspondingly, the maximum output voltage reached 360.7 mV for the Ru–AC anode, whereas the values obtained from others reached 45.2–149.6 mV. Interaction models were introduced to quantify the relationship between power generation and pollutant degradation. The conversion of highly toxic chlorophenols to organic acids could be accelerated by boosting the mass and electron transfer, thereby simultaneously enhancing CBs removal and power generation. This work provided important insights into pollutant-powered MFC development.
研究领域:
环境科学
·
生物技术
·
能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Mingmei Ding,Hang Xu,Anqi Wang,Chen Yao,Ao Wang,Li Gao
Advanced oxidation processes (AOPs) are efficient means for the water recovery by removing the organic pollutants in wastewater. In this study, γFe 2 O 3 @Ti 3 C 2 T x nanocomposite was synthesized and utilized for the removal of micropollutants (i.e. ibuprofen, IBP) through peroxymonosulfate (PMS) activation. The characterization results suggest that γFe 2 O 3 nanoparticles were uniformly decorated on the Ti 3 C 2 T x MXene nanosheets surface. γFe 2 O 3 @Ti 3 C 2 T x nanocomposite exhibited excellent catalytic ability and stability for PMS activation to generate reactive species for the elimination of IBP. The influence of reaction parameters, including catalyst, IBP and PMS concentration as well as initial pH value, were systematacially studied. The synergistic effect of the binary active sites (Fe and Ti) facilitated the cleavage of O O bond in PMS, thus contributing to the production of abundant sulfate radicals (SO 4 ●- ) and hydroxyl radicals ( ● OH) for the degradation of IBP. This study may shed light on the applications of heterogeneous catalyst for the degradation of organic pollutants through PMS activation.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）