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学者姓名：李星
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Abstract ：
A crucial and desirable objective in the wastewater treatment field is to design photocatalysts that can efficiently remove emerging pollutants while also being environmental-friendly. This work proposed a novel graphene quantum dots/BiOBr (GQDs/BiOBr) heterojunction with strong interfacial interactions through a hydrothermal method. Consequently, in just 140 min, RhB was almost entirely photodegraded by the GQDs/BiOBr and a rate constant 3.26 times higher than pristine BiOBr. The enhanced photocatalytic activity of GQDs/BiOBr was primarily associated with strengthened visible light absorption and improved charge transfer efficiency, as demonstrated through both experimental characterizations and density functional theory (DFT) calculation. Furthermore, with only a minor alteration in the surface chemical structure, GQDs/BiOBr retained strong photocatalytic ability after five cycles (RhB degradation of 85.17 %). The construction mechanism of S-scheme heterojunction, photogenerated carriers' transfer and photocatalytic mechanism were deduced by DFT calculation. The results derived from the radical trapping experiments as well as electron spin resonance (ESR) indicated that the presence of h(+) and center dot O-2(-) were crucial for the degradation process of RhB. Finally, possible degradation intermediates had been identified and pathways of RhB were proposed, and the results of the toxicity assessment showed that ecotoxicity could be reduced or even eliminated. This effective and reliable visible-light-driven photocatalyst may be applied to build a photocatalytic degradation system for the environmentally friendly and energy-efficient removal of organic pollutants.
Keyword ：
Rhodamine B Rhodamine B Degradation mechanism Degradation mechanism S-scheme GQDs/BiOBr heterojunction S-scheme GQDs/BiOBr heterojunction Visible light photocatalysis Visible light photocatalysis DFT calculation DFT calculation
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| GB/T 7714 | Liu, Yuankun , Zhang, Xinxia , Li, Xing et al. Visible light driven S-scheme GQDs/BiOBr heterojunction with enhanced photocatalytic degradation of Rhodamine B and mechanism insight [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 57 . |
| MLA | Liu, Yuankun et al. "Visible light driven S-scheme GQDs/BiOBr heterojunction with enhanced photocatalytic degradation of Rhodamine B and mechanism insight" . | JOURNAL OF WATER PROCESS ENGINEERING 57 (2023) . |
| APA | Liu, Yuankun , Zhang, Xinxia , Li, Xing , Zhou, Zhiwei . Visible light driven S-scheme GQDs/BiOBr heterojunction with enhanced photocatalytic degradation of Rhodamine B and mechanism insight . | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 57 . |
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Abstract ：
Effects of antibiotics (azithromycin, AZM, 1-40 mg/L) and quorum sensing inhibitor (QSI, 2(5H)-furanone, mg/L) combined pollution with environmental concentration of copper on bacterial/archaeal community antibiotic resistance genes (ARGs) in activated sludge system were explored. QSI inhibited nitrification obviously than AZM. AZM and QSI were synergistic inhibitions on bacterial diversity, and AZM inhibited terial compositions more than QSI. While, QSI had more impacts on archaeal diversity/compositions. Less teractions among bacteria and archaea communities with Aquimonas as keystone genus. Functional differences bacteria/archaea communities were little, and AZM had more effects on metabolism. AZM mainly affected trifying bacteria (Candidatus Nitrospira nitrificans and Nitrosomonas). Specific denitrifying bacteria were enriched by AZM (Brevundimonas, 1.76-31.69%) and QSI (Comamonas, 0.61-9.61%), respectively. AZM enriched more easily than QSI and they were antagonistic to proliferation of ARGs. Bacteria were main hosts of (macrolide-lincosamide-streptogramin B, other/efflux, etc.) and archaea (Methanosphaerula, Methanolobus) ried multiple ARGs.
Keyword ：
Combined pollution Combined pollution Quorum sensing inhibitor Quorum sensing inhibitor Potential hosts Potential hosts Bacterial and archaeal communities Bacterial and archaeal communities Antibiotic resistance genes Antibiotic resistance genes
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| GB/T 7714 | Gao, Yu-Xi , Li, Xing , Fan, Xiao-Yan et al. The dissimilarity of antibiotic and quorum sensing inhibitor on activated sludge nitrification system: Microbial communities and antibiotic resistance genes [J]. | BIORESOURCE TECHNOLOGY , 2022 , 351 . |
| MLA | Gao, Yu-Xi et al. "The dissimilarity of antibiotic and quorum sensing inhibitor on activated sludge nitrification system: Microbial communities and antibiotic resistance genes" . | BIORESOURCE TECHNOLOGY 351 (2022) . |
| APA | Gao, Yu-Xi , Li, Xing , Fan, Xiao-Yan , Zhao, Jun-Ru , Zhang, Zhong-Xing . The dissimilarity of antibiotic and quorum sensing inhibitor on activated sludge nitrification system: Microbial communities and antibiotic resistance genes . | BIORESOURCE TECHNOLOGY , 2022 , 351 . |
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Abstract ：
Pipe wall biofilm plays a vital role in water quality purification in raw water transportation system (RWTS). This study investigated the pollutants removal, bacterial community (abundant, rare and functional taxa) variations, and their correlations during biofilm development process under different pipe materials and raw water quality. Polyethylene pipe had higher removal efficiency on ammonia nitrogen (NH4+-N) and dissolved organic carbon (DOC), while stainless steel pipe achieved a better total nitrogen (TN) degradation performance. Increasing influent DOC promoted the removal of nitrogen pollutants. Compared with water quality, pipe material showed a greater influence on bacterial diversity and community structure. Pseudomonas and Planctopirus were the dominant genera in abundant and rare taxa, respectively. There were complex interactions within the abundant and rare taxa, with Haliscomenobacter and Reyranella as the hub genera, respectively, and many abundant genera co-occurred with rare genera. Serratia of abundant taxa and Filomicrobium of rare taxa had positive correlations with the influent (NH4+-N) and DOC concentration, respectively. Complete ammonia oxidation and ammonia assimilatory contributed to the great NH4+-N transformation, while limited denitrification resulted in the undesirable TN removal. Functional bacteria and genes displayed statistically strong correlations with water quality. Abundant and rare taxa were significantly affected by environmental conditions and organic matter, respectively, while the variations in functional taxa were mainly explained by organic matter, nitrogen and their interactions. These findings provide novel insights into the evolution of abundant, rare and functional taxa during biofilm development in RWTS, and highlight their correlations with water purification performance and environmental factors.
Keyword ：
Biofilm development Biofilm development Raw water transportation system Raw water transportation system Water purification Water purification Nitrogen metabolic pathway Nitrogen metabolic pathway Environmental factors Environmental factors Abundant and rare taxa Abundant and rare taxa
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| GB/T 7714 | Li, Na , Li, Xing , Fan, Xiao-Yan . Biofilm development under different pipe materials and water quality conditions in raw water transportation system: Bacterial communities and nitrogen transformation [J]. | JOURNAL OF CLEANER PRODUCTION , 2022 , 343 . |
| MLA | Li, Na et al. "Biofilm development under different pipe materials and water quality conditions in raw water transportation system: Bacterial communities and nitrogen transformation" . | JOURNAL OF CLEANER PRODUCTION 343 (2022) . |
| APA | Li, Na , Li, Xing , Fan, Xiao-Yan . Biofilm development under different pipe materials and water quality conditions in raw water transportation system: Bacterial communities and nitrogen transformation . | JOURNAL OF CLEANER PRODUCTION , 2022 , 343 . |
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Abstract ：
一种真空紫外/过硫酸氢钾耦合高级氧化去除抗生素抗性基因的方法与调控系统，属于污水处理技术领域。调控系统包括提升泵、投药泵、混合装置、进水阀、进水泵、耦合反应器、硫酸根检测仪、出水阀、回流管、回流阀、PLC调控装置、以及连接上述装置的管道，根据耦合反应器出水硫酸根(SO42‑)浓度的变化，采用循序处理阶段、循环处理阶段和强化处理阶段的精细化调控，实现了不同类型抗生素抗性基因的高效去除，同时真空紫外/过硫酸氢钾耦合高级氧化法反应条件温和，反应时间短，相关工艺可作为新型绿色高效污水处理技术应用于城市污水处理厂二级出水，为控制二级出水抗生素抗性基因污染提供技术支持。
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| GB/T 7714 | 李星 , 徐是龙 , 樊晓燕 et al. 一种真空紫外/过硫酸氢钾耦合高级氧化去除抗生素抗性基因的方法与调控系统 : CN202211022045.X[P]. | 2022-08-24 . |
| MLA | 李星 et al. "一种真空紫外/过硫酸氢钾耦合高级氧化去除抗生素抗性基因的方法与调控系统" : CN202211022045.X. | 2022-08-24 . |
| APA | 李星 , 徐是龙 , 樊晓燕 , 高玉玺 , 赵君如 , 张忠兴 . 一种真空紫外/过硫酸氢钾耦合高级氧化去除抗生素抗性基因的方法与调控系统 : CN202211022045.X. | 2022-08-24 . |
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Abstract ：
Factors responsible for undesirable coagulation performance in winter have not been well understood by far. The aim of this work is to identify the critical factor(s) and to provide applicable suggestions for drinking water production under low temperature. Specifically, water samples were collected from the river Jingmi (JM), a major drinking water source of Beijing City (China), for a series of coagulation tests. Coagulation processes influenced by factors, including particles and organic matter (natural biopolymers and humics) which commonly present in surface waters, were investigated. A photometric dispersion analyzer (PDA) was employed to reveal flocs formation and their properties impacted by water temperature, ranging from 5 degrees C to 25 degrees C. Results showed that the absence of natural biopolymers (40-90 kDa, identified as mixtures of proteins and polysaccharides) in surface water in winter significantly hindered flocs growth at low temperature; flocs size and growth rate continuously improved with artificially increasing concentration of biopolymers with/without particulates (kaolin particles in this study), demonstrating positive roles of biopolymers in coagulating kaolinite/organic water. Nanoscale observation on flocs using scanning electron microscope (SEM) demonstrated a bridging capability of biopolymers in aggregating primary particles into larger clusters, and this facilitated flocs growth at low temperature. The findings of this work are expected to improve the understanding of coagulation mecha-nisms under low temperature, also contributing to better management of coagulation when purifying surface water during winter months.
Keyword ：
Biopolymers Biopolymers Floc formation Floc formation Low temperature Low temperature Particles Particles Coagulation Coagulation
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| GB/T 7714 | Su, Zhaoyang , Wu, Xiaoting , Yu, Wenbao et al. Absence of biopolymers in surface waters inhibits flocs growth in winter: A secret of coagulation over decades [J]. | JOURNAL OF CLEANER PRODUCTION , 2022 , 375 . |
| MLA | Su, Zhaoyang et al. "Absence of biopolymers in surface waters inhibits flocs growth in winter: A secret of coagulation over decades" . | JOURNAL OF CLEANER PRODUCTION 375 (2022) . |
| APA | Su, Zhaoyang , Wu, Xiaoting , Yu, Wenbao , Liu, Ting , Li, Xing , Liu, Muyang et al. Absence of biopolymers in surface waters inhibits flocs growth in winter: A secret of coagulation over decades . | JOURNAL OF CLEANER PRODUCTION , 2022 , 375 . |
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Abstract ：
Antibiotic resistance genes (ARGs), carried by antibiotic resistant bacteria (ARB) have been present in large numbers in wastewater. Wastewater treatment plants (WWTPs) are regarded as reservoirs and sources for a wide variety of ARGs. A large number of mobile genetic elements (MGEs), heavy metals and emerging pollutants (e.g., microplastics, nanomaterials, pharmaceuticals and personal care products and quorum sensing inhibitors) detected in WWTPs can impact the proliferation of ARGs. Moreover, the removal efficiency of ARGs is limited in wastewater treatment processes. Therefore, it is of significance to summarize the research status of ARGs in WWTPs. This paper reviewed the occurrence and transmission of ARGs. The problem of multiple drug resistance and elimination of ARB were assessed in WWTPs. Also, the effects of heavy metals and emerging pollutants on ARGs in WWTPs were summarized. Furthermore, physical treatment and advanced oxidation processes for ARGs removal were critically discussed. Future research prospects were proposed with the ultimate goal to reduce the potential harm of ARGs to ecological environments and to provide guidance for practical applications.
Keyword ：
Removal methods Removal methods Heavy metal and emerging pollutants Heavy metal and emerging pollutants Wastewater treatment plant Wastewater treatment plant Antibiotic resistant bacteria Antibiotic resistant bacteria Mobile genetic elements Mobile genetic elements Antibiotic resistance genes Antibiotic resistance genes
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| GB/T 7714 | Gao, Yu-Xi , Li, Xing , Fan, Xiao-Yan et al. Wastewater treatment plants as reservoirs and sources for antibiotic resistance genes: A review on occurrence, transmission and removal [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2022 , 46 . |
| MLA | Gao, Yu-Xi et al. "Wastewater treatment plants as reservoirs and sources for antibiotic resistance genes: A review on occurrence, transmission and removal" . | JOURNAL OF WATER PROCESS ENGINEERING 46 (2022) . |
| APA | Gao, Yu-Xi , Li, Xing , Fan, Xiao-Yan , Zhao, Jun-Ru , Zhang, Zhong-Xing . Wastewater treatment plants as reservoirs and sources for antibiotic resistance genes: A review on occurrence, transmission and removal . | JOURNAL OF WATER PROCESS ENGINEERING , 2022 , 46 . |
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Abstract ：
An economical corncob biochar-based magnetic iron-copper bimetallic nanomaterial (marked as MBC) was successfully synthesized and optimized through a co-precipitation and pyrolysis method. It was successfully used to activate H2O2 to remove ciprofloxacin (CIP) from aqueous solutions. This material had high catalytic activity and structural stability. Additionally, it had good magnetic properties, which can be easily separated from solutions. In MBC/H2O2, the removal efficiency of CIP was 93.6% within 360 min at optimal reaction conditions. The conversion of total organic carbon (TOC) reached 51.0% under the same situation. The desorption experiments concluded that adsorption and catalytic oxidation accounted for 34% and 66% on the removal efficiency of CIP, respectively. The influences of several reaction parameters were systematically evaluated on the catalytic activity of MBC. OH was proved to play a significant role in the removal of CIP through electron paramagnetic resonance (EPR) analysis and a free radical quenching experiment. Additionally, such outstanding removal efficiency can be attributed to the excellent electronic conductivity of MBC, as well as the redox cycle reaction between iron and copper ions, which achieved the continuous generation of hydroxyl radicals. Integrating HPLC-MS, ion chromatography and density functional theory (DFT) calculation results, and possible degradation of the pathways of the removal of CIP were also thoroughly discussed. These results provided a theoretical basis and technical support for the removal of CIP in water.
Keyword ：
advanced oxidation process advanced oxidation process adsorption adsorption AOPs AOPs ciprofloxacin ciprofloxacin corncob biochar-based magnetic iron-copper bimetallic nanomaterial corncob biochar-based magnetic iron-copper bimetallic nanomaterial fenton-like catalyst fenton-like catalyst catalytic activity catalytic activity
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| GB/T 7714 | Liu, Hongrun , Liu, Yuankun , Li, Xing et al. Adsorption and Fenton-like Degradation of Ciprofloxacin Using Corncob Biochar-Based Magnetic Iron-Copper Bimetallic Nanomaterial in Aqueous Solutions [J]. | NANOMATERIALS , 2022 , 12 (4) . |
| MLA | Liu, Hongrun et al. "Adsorption and Fenton-like Degradation of Ciprofloxacin Using Corncob Biochar-Based Magnetic Iron-Copper Bimetallic Nanomaterial in Aqueous Solutions" . | NANOMATERIALS 12 . 4 (2022) . |
| APA | Liu, Hongrun , Liu, Yuankun , Li, Xing , Zheng, Xiaoying , Feng, Xiaoying , Yu, Aixin . Adsorption and Fenton-like Degradation of Ciprofloxacin Using Corncob Biochar-Based Magnetic Iron-Copper Bimetallic Nanomaterial in Aqueous Solutions . | NANOMATERIALS , 2022 , 12 (4) . |
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Abstract ：
This study investigated the water purification function and mechanism of biofilm in storage tank, with a view to using it as a pretreatment unit for rainwater cleaner production. Shortening the hydraulic retention time (HRT) of storage tank from 12 to 4 h improved the pollutants removal performance and reduced the suspended bacteria counts. The accumulation of abundant taxa and succession of rare taxa were observed with biofilm development. Positive correlations within and across different bacterial taxa were dominant in the network, and some rare genera (Ralstonia and Micropruina) were identified as hub bacteria. Candidatus Nitrospira nitrosa and Nitrospira sp. ENR4 were two identified complete ammonia oxidizers. Denitrifying bacteria tended to enrich and formed more complex interactions over time. The main nitrogen metabolism pathways may be ammonia assimilatory, complete denitrification and dissimilatory/assimilatory nitrate reduction. HRT was negatively correlated with most dominant genera, and contributed 20.35% to the variation of functional taxa. This study highlights the self-purification function and micro-ecology of storage tank, and provides a new insight for its role in rainwater cleaner production process.
Keyword ：
Full-scale classification Full-scale classification Self-purification function Self-purification function Nitrogen metabolism pathway Nitrogen metabolism pathway Functional bacteria Functional bacteria Co-occurrence pattern Co-occurrence pattern Rainwater storage tank Rainwater storage tank
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| GB/T 7714 | Li, Na , Li, Xing , Fan, Xiao-Yan . Storage tank as a pretreatment unit for rainwater cleaner production: Role of biofilm bacterial communities and functional genera in water quality improvement [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2021 , 303 . |
| MLA | Li, Na et al. "Storage tank as a pretreatment unit for rainwater cleaner production: Role of biofilm bacterial communities and functional genera in water quality improvement" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 303 (2021) . |
| APA | Li, Na , Li, Xing , Fan, Xiao-Yan . Storage tank as a pretreatment unit for rainwater cleaner production: Role of biofilm bacterial communities and functional genera in water quality improvement . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2021 , 303 . |
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A Fe-doped graphite-like carbon nitride (g-C3N4) nanocomposites containing various Fe contents (5 wt.%, 10 wt. % and 15 wt.%) were prepared via two-step calcination thermal polymerization, and were employed as efficient heterogeneous photo-Fenton composites towards rhodamine B (RhB) removal in visible-light/H2O2 system. The sheet structure of g-C3N4 was refined down to nano-scale and less densely packed by the increasing Fe-doping ratio. X-ray diffraction (XRD), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) spectra indicated that Fe was doped completely into the g-C3N4 lattice. Over 90 %RhB was degraded in photo-Fenton system within 45 min under the optimal Fe-doping ratio of 10 wt.% (10 % Fe-g-C3N4). The degradation efficiency of photo-Fenton was superior in comparison with photocatalysis and Fenton reaction. The as-prepared composite exhibited excellent performance (similar to 90 % removal) and high stability in a wide range of pH value (3 similar to 9), and the degradation data well fitted with the pseudo-first-order kinetics model. The enhanced photo-Fenton catalytic activity benefited from the Z-scheme heterojunctions of Fe-g-C3N4, which improved the separation ability of photo-generated charge carriers and increased the electrons that participated in Fe2+/Fe3+ cycle. The main active oxygen species of Fe-g-C3N4 were hydroxyl radicals, followed by superoxide radicals and electron holes. The effect of Fe-doping was revealed by density functional theory calculation. The excellent recyclability and stability of Fe-g-C3N4 catalyst was also observed. Such photo-Fenton system was also effective to degrade other organic pollutants. The findings reported here offer promising implications in developing the utilization of Fe-g-C3N4 composite in photo-Fenton system for treatment of wastewater.
Keyword ：
RhB RhB Photo-Fenton Photo-Fenton Fe doped g-C3N4 Fe doped g-C3N4 Density functional theory (DFT) Density functional theory (DFT)
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| GB/T 7714 | Ji, Siyang , Yang, Yanling , Zhou, Zhiwei et al. Photocatalysis-Fenton of Fe-doped g-C3N4 catalyst and its excellent degradation performance towards RhB [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2021 , 40 . |
| MLA | Ji, Siyang et al. "Photocatalysis-Fenton of Fe-doped g-C3N4 catalyst and its excellent degradation performance towards RhB" . | JOURNAL OF WATER PROCESS ENGINEERING 40 (2021) . |
| APA | Ji, Siyang , Yang, Yanling , Zhou, Zhiwei , Li, Xing , Liu, Yuankun . Photocatalysis-Fenton of Fe-doped g-C3N4 catalyst and its excellent degradation performance towards RhB . | JOURNAL OF WATER PROCESS ENGINEERING , 2021 , 40 . |
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Abstract ：
The biofilms generated in a fire extinguishing water supply system can cause corrosion and a reduction in the water supply capacity; thus, degrading the system performance. To mitigate microbial corrosion, appropriate disinfection measures are necessary. In this study, the secondary addition of chlorine is employed to investigate the kinetics of chlorine decay, and shock disinfection is applied to investigate the removal efficiency of corrosion bacteria, and the microbial composition of a biofilm on the pipe wall was also clarified. The results show that the residual chlorine content in the secondary chlorination process was directly correlated with the decay rate of residual chlorine and the corrosion rate of the pipe wall. Additionally, the chlorine impact disinfection method could reduce the electrochemical corrosion phenomenon of the pipe wall. When the concentration of chlorine was 3 mg/L, the removal rate of corrosion bacteria was higher in 60 min than in 30 min. Specifically, most of the bacteria were inactivated in 60 min and the biofilm was severely damaged. Shock disinfection could significantly inactivate all microflora in the biofilm; the relative abundances of microflora varied significantly, while the change of microflora at the phylum level was insignificant. This study can provide theoretical support for the secondary addition of chlorine and shock disinfection in a fire extinguishing water supply system.
Keyword ：
shock disinfection shock disinfection stainless steel pipeline stainless steel pipeline microbial corrosion microbial corrosion fire extinguishing water supply system fire extinguishing water supply system biofilm biofilm
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| GB/T 7714 | Xiang, Kun , Geng, Pan , Sun, Xuan et al. Study on Shock Disinfection in a Fire Extinguishing Water Supply System [J]. | WATER , 2021 , 13 (21) . |
| MLA | Xiang, Kun et al. "Study on Shock Disinfection in a Fire Extinguishing Water Supply System" . | WATER 13 . 21 (2021) . |
| APA | Xiang, Kun , Geng, Pan , Sun, Xuan , Yuan, Shasha , Du, Peng , Li, Xing . Study on Shock Disinfection in a Fire Extinguishing Water Supply System . | WATER , 2021 , 13 (21) . |
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