Advanced Energy and Sustainability Research
·
2022
·Vol. 3
·期 12
·2200138
·
IF 0
Linlin Zhang,Lu Liu,Xiaodong Zhang,Chengjun Ge,Jianjun Liao
Pharmaceuticals and personal care products (PPCPs) have attracted widespread attention due to their durability to the environment. Therefore, it is highly desirable to develop new technologies that are environmentally friendly, energy saving, and compatible to degrade these pollutants. In this study, a vis–NIR-driven and highly efficient S-scheme photocatalyst, WO 3− x /S doped g-C 3 N 4 , is used for PPCPs degradation. The results show that the photocatalytic activity of WO 3− x /S doped g-C 3 N 4 composite system for PPCPs is much higher than that of WO 3− x and g-C 3 N 4 . The introduced WO 3− x has a great positive effect on the photocatalytic performance of WO 3− x /S doped g-C 3 N 4 S-scheme composite photocatalyst for both naproxen and diclofenac. Due to the fast photogenerated carrier separation brought by the S-scheme, the WO 3− x /S-doped g-C 3 N 4 nanocomposite exhibits enhanced performance in photocatalytic PPCPs degradation. The degradation rate of naproxen is 99.2%, and the degradation rate of diclofenac can also be as high as 99.5%. This research has important reference value for the synthesis of WO 3 -based S-scheme photocatalysts for energy and environmental applications.
研究领域:
环境科学
·
材料科学
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DOI
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yizhou Tu,Liqin Han,Xiaolu Ding,Xingqi Zhu,Guizhou Xu,Xianchuan Xie,Qing Zhou,Chendong Shuang,Aimin Li
Refractory pharmaceuticals and personal care products (PPCPs) represented by diclofenac, ibuprofen, sulfamethoxazole, and carbamazepine have become risk compounds in municipal wastewater, and they possessed generalized antimicrobial properties along with numerous electron-withdrawing groups, difficult to biodegrade through bacterial-based systems. In contrast, fungi could thrive even in environments contaminated by antibiotics, among which the white rot fungus Trametes versicolor ( T. versicolor ) possessed enzymatic degradation systems represented by laccase, capable of degrading complex chemical bonds. However, almost all white rot fungi reactors were conducted at pH 4.5, which limited their application. In this study, the neutral degradation environment was developed for T. versicolor , and the pH-dominated laccase degradation mechanism was clarified. It was found that T. versicolor could possess both laccase activity and production at pH 6.5, with better application potential compared to acidic conditions. Accordingly, fluidized bed T. versicolor reactors were developed, and their application potential under neutral pH was validated for the first time in municipal wastewater. Compared with reactors without any adjustment, the four refractory PPCPs removal by T. versicolor reactors was increased from 26% to 72%, and T. versicolor abundance was increased from almost zero to 27% by adding carbon and nitrogen sources and adjusting pH to 6.5. Metabolic pathway analysis revealed the cytochrome P450 and amide hydrolase functional genes of T. versicolor , which were critical for PPCPs degradation. Nine transformation products of PPCPs were identified, further validating the multiple capabilities of T. versicolor for both hydroxylation and complex chemical structures (carbon–nitrogen bonds, epoxides, carbon–sulfur bonds) degradation. Furthermore, these findings also provided new ideas for the degradation of more complex aminobenzene or chlorinated aniline wastewater.
研究领域:
环境科学
·
微生物学
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产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 47
·475701
·
IF 3.5
Jiayu Ma,Xu Jin,Mengjuan Yang,Ximeng Zhao,Shanshan Ding,Bin Wang,Xiuyan Li
In this research work, a reusable and efficient 2D/1D heterogeneous structured photocatalyst based on amine-functionalized halloysite nanotubes (MHNTs) and Bi2WO6 nanosheet (BWO) was prepared using a facile hydrothermal method for decomposing PPCPs under simulated sunlight. On the degradation of tetracycline hydrochloride (TCH), the effects of composite catalysts prepared under various conditions were discussed. The results showed that over BWO/MHNTs with a mass ratio was 3:1, the synthesizing temperature was 120 °C and the precursor pH value was 1, the TCH (10 mg l−1) degradation efficiency reached 100% after 1 h irradiation of simulated sunlight. Moreover, BWO/MHNTs composites kept good recovery and stable photocatalytic activity after 5 cycles. The excellent dispersion of Bi2WO6 on the surface of clay minerals and the oxygen vacancy enhanced electron–hole separation may be responsible for the its high activity and stability. Futhermore, the radical capture test demonstrated that ·O−2 was primarily responsible for the photodegradation of TCH. Thus, BWO/MHNTs composites exhibit a good application prospect in the field of sunlight-driven photocatalytic degradation towards PPCPs pollutants in water.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xubin Qian,Kefu Peng,Lei Xu,Shaoyu Tang,Weilai Wang,Min Zhang,Junfeng Niu
The global detection and potential harm of pharmaceuticals and personal care products (PPCPs) call for the effective decomposition technology. In this study, the modified β-PbO 2 anodes with different hydrophobicity (Ti/SnO 2 -Sb/La-PbO 2 , Ti/SnO 2 -Sb/La-PbO 2 -PTFE and Ti/SnO 2 -Sb/La-PbO 2 -PVDF) were prepared to decompose aqueous PPCPs, i.e. isoniazid, methotrexate, carbamazepine, sulfamethoxazole and ibuprofen. PTFE and PVDF modification improved the physical property, electrochemical property, stability and safety of β-PbO 2 electrode. Moreover, Ti/SnO 2 -Sb/La-PbO 2 -PVDF had the highest oxygen evolution potential (1.95 V vs. SCE), the largest electroactive area (88.85 cm 2 ), the highest HO • production rate (10.44 mM min −1 m −2 ) and the best degradation performance for all the five PPCPs. The hydrophobic surface increased the proportion of free HO • , resulting in higher radical utilization rate and better degradation performance. The excessive hydrophobicity could decrease the degradation performance of PPCPs with high log K ow due to the relatively large hydrophobic force zone. Furthermore, the hydrophobicity enhanced the mineralization (current) efficiency of isoniazid, and its electrochemical degradation mechanism on Ti/SnO 2 -Sb/La-PbO 2 -PVDF was thoroughly proposed. These results demonstrated that Ti/SnO 2 -Sb/La-PbO 2 -PVDF anode exhibited a good application prospect in treating wastewater containing PPCPs.
研究领域:
环境科学
·
电化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Pengxiao Liu,Xinzhang Yu,Yang Liu,Rong Han,Houfen Li
This study established a novel three-dimensional electrochemical oxidation coupled with forward osmosis and reverse osmosis (3DEO-FO-RO) system with the purpose to achieve simultaneous degradation and rejection of pharmaceuticals and personal care products (PPCPs) in wastewater. 18 frequently detected PPCPs were selected as the target pollutants to prepare the synthetic wastewater with a concentration of 200 μg/L for each pollutant. Ti/IrO 2 –Ta 2 O 5 –SnO 2 mesh anode, titanium mesh cathode and Sn–Sb–Bi/γ-Al 2 O 3 particles electrodes were integrated in the 3DEO-FO reactor. Experimental results demonstrated that degradation efficiency exceeding 98.5 % and rejection exceeding 99.4 % for each PPCP were achieved simultaneously in the 3DEO-FO-RO processes at a current density of 1 mA/cm 2 after 8 h treatment. Despite variations in applied current density, the 3DEO-FO-RO processes exhibited superior PPCPs removal efficiencies, particularly for refractory compounds, compared to the 2DEO-FO-RO processes. Increased hydroxyl radical (·OH) generation in the 3D reactor was considered to be responsible for the excellent performance. Furthermore, results derived from ultraviolet (UV) absorption spectra and fluorescence excitation-emission matrix (EEM) spectra provided additional validation for the effective removal of PPCPs in the 3DEO-FO-RO processes, along with evidence indicating the decomposition of PPCPs into smaller constituents. Ultimately, the 3DEO-FO-RO process demonstrated its capacity in removing PPCPs from actual secondary effluent from a wastewater treatment plant. This integrated system coupling 3D EO with FO-RO membranes can provide an efficient approach for simultaneous degradation and rejection of trace contaminants for wastewater reuse.
研究领域:
环境科学
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水处理技术
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电化学工程
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Hengli Qian,Guanjie Yu,Qidong Hou,Yifan Nie,Chuanyunlong Bai,Xinyu Bai,Haozhi Wang,Meiting Ju
To achieve efficient degradation of pharmaceutical and personal care products (PPCPs), dual reaction centers [email protected] photo-Fenton catalysts with high-speed electron transmission channel were designed through surface hydroxyl-induced assembly. In [email protected] catalytic system, the photocatalysis center of ZnO and Fenton catalytic center of FePc were formed simultaneously. Concept and process for the control of hydroxyl groups to construct a dual reaction center [email protected] photo-Fenton catalyst were verified ingeniously based on the density functional theory (DFT) analysis and experimental results. A series of catalysts, including ZIF-8 (400 ℃-N 2 ), FePc (400 ℃-N 2 ), ZIF-8 (400 ℃)-FePc (400 ℃) and [email protected] were prepared and characterized by XRD, FTIR, TEM, BET, XPS, PL and DRS, respectively. The [email protected] catalyst showed superior performance for the photo-Fenton degradation of ibuprofen, affording degradation rate larger than 90 % within just 10 min under simulateed sunlight. The excellent performance of [email protected] catalyst is mainly attributed to the synergistic effect between dual reaction centers of [email protected] This work provides a novel method to construct dual reaction centers [email protected] catalyst with efficient photo-generated electrons transmission link and to strengthen the synergistic effect of dual reaction centers.
研究领域:
环境化学
·
催化
·
材料科学
·
光化学
✓ 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）