Metabolites
·
2024
·Vol. 14
·期 8
·449
·
IF 3.4
Min Li,Zhenfang Shang,Yonglan Ma,Huijun Zhao,Zhijing Ni,Zhaojun Wei,Xiu Zhang
This study investigates the growth tolerance mechanisms ofChlorella pyrenoidosato 3-fluorophenol and its removal efficiency by algal cells. Our results indicate thatC. pyrenoidosacan tolerate up to 100 mg/L of 3-fluorophenol, exhibiting a significant hormesis effect characterized by initial inhibition followed by promotion of growth. InC. pyrenoidosacells, the activities of superoxide dismutase (SOD) and catalase (CAT), as well as the levels of malondialdehyde (MDA) and reactive oxygen species (ROS), were higher than or comparable to the control group. Metabolic analysis revealed that the 3-fluorophenol treatment activated pathways, such as glycerol phospholipid metabolism, autophagy, glycosylphosphatidylinositol (GPI)-anchored protein biosynthesis, and phenylpropanoid biosynthesis, contributed to the stabilization of cell membrane structures and enhanced cell repair capacity. After 240 h of treatment, over 50% of 3-fluorophenol was removed by algal cells, primarily through adsorption. Thus,C. pyrenoidosashows potential as an effective biosorbent for the bioremediation of 3-fluorophenol.
研究领域:
环境科学
·
生物技术
·
微生物学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Zhenxin Wang,Yifan Yin,Jiaqi Yang,Jiaye Duan,Xiangkang Zeng,Wuang Ren,Shengjiong Yang,Gen Wang
Peracetic acid (PAA)-based advanced oxidation processes (AOPs) have shown promise for organic pollutants removal but predominantly rely on conventional mineralization pathways. Herein, we propose a novel strategy for eliminating phenolic contaminants via polymerization using a heterogeneous CuO/PAA system, in which phenolic compounds are not decomposed but primarily transformed into recoverable solid-state organic polymers. Mechanistic investigations reveal that the catalytic system leverages electron transfer from phenolic contaminants to activated PAA (e.g., CuO@PAA complex), generating phenoxy radicals that undergo crosslinking via polymerization and coupling reactions. Consequently, at neutral pH and low PAA dosage (3.0 mM), complete removal of diverse phenolic compounds (1.0 mM), including phenol, halophenols, cresol and bisphenols, was achieved within 90 min, with 60.5–74.9 % of total organic carbon (TOC) converted into solid-state polymers. More importantly, the electron transfer-driven polymerization maintained efficient in complex matrices and authentic coking wastewater, eliminating 100 % of volatile phenolics (1750 ± 25 mg/L) while generating recoverable polymers (150 mg/L) and enhancing biodegradability (BOD 5 /COD from 0.22 to 0.52). Through the design of a dual-zone reactor, the CuO/PAA-driven polymerization process demonstrated scalability with reduced environmental impact. This work provides a sustainable paradigm for phenolic wastewater remediation via PAA-activated polymerization, enabling simultaneous contaminant elimination and carbon resource recovery.
研究领域:
环境科学
·
环境工程
·
化学工程
·
污染控制
·
高级氧化过程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Xiaomin Zhang,Wenjie Xiong,Zhuoheng Tu,Lingling Peng,Youting Wu,Xingbang Hu
Selective separation of CO2 from flue gas conforms to the criterion of sustainable society. Herein, a series of imidazolium-based phenolate ionic liquids (ILs) that have dual-site interaction centers to isolate CO2 from N2 by supported ionic liquid membranes (SILMs) is designed and prepared. Density, viscosity, and CO2 solubility in these ILs were measured. The effects of the electron-withdrawing or electron-donating ability of the substituents on the anion, the operation temperature and partial pressure on the permeability of CO2, and the ideal selectivity of CO2/N2 were investigated systematically. High permeability (up to 2540 barrers) and selectivity of CO2/N2 (up to 127) are achieved in 1-butyl-3-methylimidazolium phenolate ([bmim][PhO]) containing 15 wt % H2O under humidified condition. A novel facilitated transport mechanism, transfer of CO2 from carbene to phenolated anion, is proposed based on NMR, FT-IR, and theoretical calculation results. The new pathway is believed to offer an alternative opportunity for designing novel CO2 separation materials.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2021
·Vol. 15
·期 2
·1338-1346
·
IF 8.897
Li Zhijun,Zhang Mingyang,Zhang Lili,Dong Xiuli,Leng Leipeng,Horton J. Hugh,Wang Jun
Tuning the electronic properties of single atom catalysts (SACs) between the central metal and the neighboring surface atoms has emerged as an efficient strategy to boost catalytic efficiency and metal utilization. Here we describe a simple and efficient approach to create atomically dispersed palladium atoms supported over defect-containing porous ceria nanorod containing palladium up to 0.26 wt.%. The existence of singly dispersed palladium atoms is confirmed by spherical aberration correction electron microscopy and extended X-ray absorption fine structure measurements. This catalyst shows excellent efficiency in hydrodehalogenation reactions at low H 2 pressure under mild conditions, along with satisfactory recyclability and scalability. Density functional theory (DFT) calculations reveal that the high activity stems from the spatial isolation of palladium atoms and the modified electronic structure of palladium confined in defect-containing ceria nanorod. This work may lay the foundation for the facile creation of single atom catalysts within the synthetic community and shed light on the possibility for scale-up production.
研究领域:
材料科学
·
催化化学
·
理论计算
✓ 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）