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学者姓名：周志伟
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Abstract ：
Natural organic matter (NOM) can impede the removal of organic micro-pollutants (OMPs) through several mechanisms, including inner filter effect, competition with the target OMP, and radical scavenging, during synchronous adsorption/photocatalysis of multi-functional composites. In this study, the fate and inhibitory mechanisms of sulfamerazine (SMZ, a model OMP) that occurred in presence of seven different NOM samples (i.e. three standard NOM surrogates, a river water sample, a carbon filter effluent and two different sand filter effluents) during the adsorption/photocatalysis by a composite of Bi2O3-TiO2 supported on powdered activated carbon (Bi2O3-TiO2/PAC, abbreviated as BTP) when exposed to visible light irradiation were revealed. The results indicated that adsorption played a greater attribution than photocatalysis on SMZ removal. The primary impediment to the adsorption and photocatalytic degradation of SMZ was attributed to the presence of terrestrial-derived, humic-like NOM fractions with high aromaticity. The adsorption efficacy of SMZ was weakened by the absorption of NOM and its degradation products onto the BTP surface. The inner filter effect, competition between NOM and SMZ, and radical scavenging were responsible for the reduced photocatalysis of SMZ. In the cases of real water matrices, the presence of inorganic anion and co-existed NOM reduced the removal of SMZ. In summary, the findings of this work offer a comprehensive comprehension of the impact of NOM fractions on photocatalysis, emphasizing the necessity to examine the interplay between NOM and background inorganic constituents in the degradation of OMP via adsorption/photocatalysis.
Keyword ：
inhibition inhibition Bi2O3-TiO2 Bi2O3-TiO2 PAC composite PAC composite multi-functional composite multi-functional composite natural organic matter natural organic matter adsorption and photocatalysis adsorption and photocatalysis
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| GB/T 7714 | Zhou, Zhiwei , Zhang, Ruixin , Yang, Yanling et al. Fate of sulfamerazine by synchronous adsorption and photocatalysis dependent on natural organic matter properties [J]. | ENVIRONMENTAL TECHNOLOGY , 2023 . |
| MLA | Zhou, Zhiwei et al. "Fate of sulfamerazine by synchronous adsorption and photocatalysis dependent on natural organic matter properties" . | ENVIRONMENTAL TECHNOLOGY (2023) . |
| APA | Zhou, Zhiwei , Zhang, Ruixin , Yang, Yanling , Li, Xing , Ren, Jiawei . Fate of sulfamerazine by synchronous adsorption and photocatalysis dependent on natural organic matter properties . | ENVIRONMENTAL TECHNOLOGY , 2023 . |
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Abstract ：
In this study, persulphate and nanoscale zero-valent iron were activated by ultraviolet irradiation (PS/nZVI/UV), followed by formation of dynamic flocs with AlCl3-TiCl4 coagulant directly injected into a gravity-driven membrane (GDM) tank. Membrane fouling caused by typical organic matter fractions including humic acid (HA), HA together with bovine serum albumin (HA-BSA), HA combined with polysaccharide (HA-SA) and the HA-BSA-SA mixture at pH of 6.0, 7.5 and 9.0 were evaluated by specific flux and fouling resistance distribution. The results showed that GDM pre-layered with AlCl3-TiCl4 flocs exhibited the maximum specific flux, followed by AlCl3 and TiCl4. Pre-oxidation with 0.5 mM PS and 0.1 g nZVI under UV radiation for 20 min was beneficial to degrade HA and SA fraction with molecular weight >100 kDa and <30 kDa, and BSA fraction with <30 kDa. The presence of BSA attributed mostly to irreversible fouling, SA together with BAS could exacerbate irreversible fouling, while HA caused the least fouling. The irreversible resistance of a PS/nZVI/UV-GDM system was 62.79%, 27.27%, 58.03% and 49.68% lower than that of control GDM in the treatment of HA, HA-BSA, HA-SA and HA-BSA-SA, respectively. The PS/nZVI/UV-GDM system could achieve the highest foulants removal efficiency at pH of 6.0. Morphological observations confirmed the differences in biofouling layers in different water types. Over 30-day operation, the bacterial genera on the biofouling layer could affect the organic removals, while the type of organic matter that was present influenced the relative abundance of bacterial genera.
Keyword ：
Gravity-driven membrane Gravity-driven membrane nanoscale zero-valent iron nanoscale zero-valent iron flocs layer flocs layer biofouling layer biofouling layer ultraviolet (PS ultraviolet (PS nZVI nZVI persulphate persulphate NOM fractions NOM fractions UV) UV)
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| GB/T 7714 | Zhao, Fuwang , Zhou, Zhiwei , Du, Peng et al. Reduction of fouling of gravity-driven membrane by combined treatment of persulphate/nanoscale zero-valent iron/ultraviolet and dynamic dual coagulant flocs layer [J]. | ENVIRONMENTAL TECHNOLOGY , 2023 . |
| MLA | Zhao, Fuwang et al. "Reduction of fouling of gravity-driven membrane by combined treatment of persulphate/nanoscale zero-valent iron/ultraviolet and dynamic dual coagulant flocs layer" . | ENVIRONMENTAL TECHNOLOGY (2023) . |
| APA | Zhao, Fuwang , Zhou, Zhiwei , Du, Peng , Li, Xing , Lu, Qingxuan . Reduction of fouling of gravity-driven membrane by combined treatment of persulphate/nanoscale zero-valent iron/ultraviolet and dynamic dual coagulant flocs layer . | ENVIRONMENTAL TECHNOLOGY , 2023 . |
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Abstract ：
Biofouling is a major challenge limiting the practical application of biofiltration-facilitated gravity-driven membrane (GDM) systems in drinking water treatment. In this study, ultraviolet irradiation, including ultraviolet (UV) and vacuum ultraviolet (VUV) irradiation, was used for in-situ purification of membrane tanks to control membrane biofouling. After using UV and VUV, the permeate flux increased significantly by 26.1% and 78.3%, respectively, which was mainly due to the decreased cake layer resistance (Rc). The permeability of the biofouling layer improved after UV and VUV application, as evidenced by the increased surface porosity and decreased thickness. The contents of loosely bound extracellular proteins (LB-PN) and tightly bound extracellular proteins (TB-PN) in the biofouling layer were reduced after UV and VUV irradiation. The decreased LB-PN and TB-PN improved the interfacial free energy between the fouling itself and between the fouling and the membrane, which contributed to the reduction of interfacial cohesion and adhesion, resulting in a looser and thinner biofouling layer and a cleaner membrane. The concentration of protein-like material in the membrane tank decreased after UV and VUV irradiation, significantly altering the bacterial community structure on the membrane surface (Mantel's r > 0.7, p < 0.05). The changes in the metabolic state were responsible for the differences in the LB-PN and TB-PN contents. The inhibition of "Alanine, aspartate and glutamate metabolism" and "Glycine, serine and threonine metabolism" reduced amino acid biosynthesis, which restricted the secretion of LB-PN and TB-PN. Critical genera in the Proteobacteria phylum, such as Hirschia, Rhodobacter, Nordella, Candidatus_Berkiella, and Limnohabitans, were involved in metabolite transformation. Overall, the in-situ application of UV and VUV can be an effective alternative strategy to mitigate membrane biofouling, which would facilitate the practical application of biofiltration-facilitated GDM systems in drinking water treatment.
Keyword ：
Metabolic pathway Metabolic pathway Gravity-driven membrane (GDM) Gravity-driven membrane (GDM) Ultraviolet (UV) Ultraviolet (UV) Interface free energy Interface free energy Extracellular polymeric substances (EPS) Extracellular polymeric substances (EPS) Vacuum ultraviolet (VUV) Vacuum ultraviolet (VUV)
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| GB/T 7714 | Feng, Jianyong , Li, Xing , Lu, Zedong et al. Enhanced permeation performance of biofiltration-facilitated gravity-driven membrane (GDM) systems by in-situ application of UV and VUV: Comprehensive insights from thermodynamic and multi-omics perspectives [J]. | WATER RESEARCH , 2023 , 242 . |
| MLA | Feng, Jianyong et al. "Enhanced permeation performance of biofiltration-facilitated gravity-driven membrane (GDM) systems by in-situ application of UV and VUV: Comprehensive insights from thermodynamic and multi-omics perspectives" . | WATER RESEARCH 242 (2023) . |
| APA | Feng, Jianyong , Li, Xing , Lu, Zedong , Yang, Yanling , Zhou, Zhiwei , Liang, Heng . Enhanced permeation performance of biofiltration-facilitated gravity-driven membrane (GDM) systems by in-situ application of UV and VUV: Comprehensive insights from thermodynamic and multi-omics perspectives . | WATER RESEARCH , 2023 , 242 . |
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Abstract ：
In this study, a novel composite based on bismuth oxide, reduced graphene oxide and titanium dioxide (labeled as BRGT) was utilized for visible light photocatalysis to mitigate ultrafiltration membrane fouling caused by natural organic matter (NOM). The results show that the coexistence of NOM and the BRGT composite (without photocatalysis) did not aggravate membrane fouling, and the membrane preferentially retained a high molecular weight, hydrophobic component of NOM that formed a dense cake layer with BRGT composite. As the photo-catalysis time increased, the extent of membrane fouling was alleviated. The maximum specific flux recovered from 0.21 to 0.73 at 60 min, and the hydraulic reversible and irreversible resistances ere 1.15 x 1010 and 4.23 x 1010 m-1, respectively. The reduction of NOM in the feed water, especially the removal of UV254, played a significant role in the alleviation of membrane fouling. Additionally, the changes in the properties of NOM, including the reduction of fluorescent humic and protein/polyphenol components corresponding to reversible and irreversible fouling, respectively, the photo-degradation of high molecular weight NOM into low molecular weight NOM (such as low molecular weight-acids), and the conversion of hydrophobic fractions into hydrophilic fractions, contributed to the mitigation of membrane fouling. We also found a strong negative correlation be-tween the roughness of the cake layer and irreversible fouling. Overall, the changes in the properties of NOM in feed water can hinder or even inhibit the formation of the cake layer, and the use of visible light photocatalysis of the BRGT composite has great potential to alleviate ultrafiltration membrane fouling caused by natural organic matter.
Keyword ：
Mechanism of fouling development Mechanism of fouling development Fouling mitigation Fouling mitigation Ultrafiltration Ultrafiltration Natural organic matter Natural organic matter Visible light photocatalysis Visible light photocatalysis
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| GB/T 7714 | Yu, Rui , Yang, Yanling , Zhou, Zhiwei et al. Role of visible light photocatalysis in alleviation and mechanism transformation of ultrafiltration membrane fouling caused by natural organic matter [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2023 , 324 . |
| MLA | Yu, Rui et al. "Role of visible light photocatalysis in alleviation and mechanism transformation of ultrafiltration membrane fouling caused by natural organic matter" . | SEPARATION AND PURIFICATION TECHNOLOGY 324 (2023) . |
| APA | Yu, Rui , Yang, Yanling , Zhou, Zhiwei , Li, Xing , Liu, Chunjiao , Sun, Tianjie . Role of visible light photocatalysis in alleviation and mechanism transformation of ultrafiltration membrane fouling caused by natural organic matter . | SEPARATION AND PURIFICATION TECHNOLOGY , 2023 , 324 . |
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Abstract ：
This study investigated the ultrasonic-thermal regeneration of powdered activated carbon (PAC) spent using 4-chlorophenol (4-CP). Similarly, a thermal regeneration process was also studied and the reaction conditions (i.e., regeneration temperature, heating rate, regeneration time) were tested. Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis were applied to characterize the regenerated PACs under different treatments (thermal, ultrasonic and ultrasonic-thermal) and also compare them with the fresh and exhausted PACs. According to our regeneration observations, the ideal regeneration parameters were determined to be a 40 kHz frequency, 0.18 W/mL sonication power, 0.1 M NaOH and 50% (v/v) ethyl alcohol as the regeneration solution, and 1 g/L of saturated PAC mass with thermal regeneration as the second stage at 500 ?, desorbed for 30 min with a heating rate of 20 ? min(-1). Under these conditions, the RE value achieved 90.99% and the ? value reached 5.6%. The results of FTIR, XPS and XRD revealed that the oxygen functional group content of ultrasonic-thermal regenerated PAC significantly increased. These oxygenous groups exerted a positive effect on the adsorption process of the regenerated PAC and the subsequent adsorption-regeneration process.
Keyword ：
characteristic characteristic powdered activated carbon powdered activated carbon thermal thermal ultrasonic ultrasonic regeneration regeneration
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| GB/T 7714 | Zhang, Tingting , Yang, Yanling , Li, Xing et al. Ultrasonic-Thermal Regeneration of Spent Powdered Activated Carbon [J]. | SUSTAINABILITY , 2023 , 15 (11) . |
| MLA | Zhang, Tingting et al. "Ultrasonic-Thermal Regeneration of Spent Powdered Activated Carbon" . | SUSTAINABILITY 15 . 11 (2023) . |
| APA | Zhang, Tingting , Yang, Yanling , Li, Xing , Zhou, Zhiwei , Wei, Bigui . Ultrasonic-Thermal Regeneration of Spent Powdered Activated Carbon . | SUSTAINABILITY , 2023 , 15 (11) . |
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Abstract ：
It is a critical challenge for drinking water production when treating algae-contaminated surface water. In this study, the impact of in situ coagulation (C), activated alumina filtration (AA) and their combination (CAA) on the performance of gravity-driven membrane (GDM) was systematically assessed during 105-day operation. The results indicated that pretreatments in particular CAA could effectively enhance GDM flux, and the stable fluxes were increased to 3.1, 4.9 and 8.3 L/(m(2).h) (LMH) for CGDM, AA/GDM and CAA/GDM, respectively when compared to the control GDM (2.0 LMH). Coagulation was beneficial to formation of thick but loose biofouling layer, while AA filtration was effective to retain foulants including extracellular polymeric substances (EPS), organics, total nitrogen and total phosphorus. The CAA/GDM could mostly remove these foulants, and facilitate the proliferation of bacterial genera that could consume EPS, further alleviating membrane fouling. The dif-ference in loosely bound EPS and tightly bound EPS of biofouling layer attributed to the difference of reversible fouling and irreversible fouling, respectively. Morphological observations, variation in functional groups or el-ements further confirmed the difference in biological layers in different GDM systems. The occurrence of specific bacterial genera involving the potential to degrade protein, chitin and other high molecular weight organics was responsible for contaminant removals.
Keyword ：
In situ coagulation In situ coagulation Biofouling layer Biofouling layer Gravity-driven membrane (GDM) Gravity-driven membrane (GDM) Flux stabilization Flux stabilization Bacterial community Bacterial community Extracellular polymeric substances (EPS) Extracellular polymeric substances (EPS)
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| GB/T 7714 | Du, Peng , Li, Xing , Yang, Yanling et al. Regulated-biofilms enhance the permeate flux and quality of gravity-driven membrane (GDM) by in situ coagulation combined with activated alumina filtration [J]. | WATER RESEARCH , 2022 , 209 . |
| MLA | Du, Peng et al. "Regulated-biofilms enhance the permeate flux and quality of gravity-driven membrane (GDM) by in situ coagulation combined with activated alumina filtration" . | WATER RESEARCH 209 (2022) . |
| APA | Du, Peng , Li, Xing , Yang, Yanling , Zhou, Zhiwei , Fan, Xiaoyan , Chang, Haiqing et al. Regulated-biofilms enhance the permeate flux and quality of gravity-driven membrane (GDM) by in situ coagulation combined with activated alumina filtration . | WATER RESEARCH , 2022 , 209 . |
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Abstract ：
This study evaluated a long-term impact of biological activated carbon (BAC) filter that was employed in a fullscale drinking water treatment plant to enhance the removal of contaminants by the ultrafiltration (UF) process. The results showed that BAC enhanced UF performance by increasing the flux by 18.5% and extending the filtration run by 45%. The presence of BAC improved the removal of primary contaminants, including dissolved organic carbon (4-40%), UV254 (10-57.7%), geosmin and 2-methylisoborneol (80%). BAC was also effective in decreasing the concentration of biopolymers, humic substances, (semi-)volatile organics, chlorite and halonitromethanes, thereby lowering contaminant load on the UF unit. The changes in primary water quality parameters in the combined process showed that the humic substances in dissolved organic nitrogen, low molecular weight substances in UV254, and fluorescence protein-like substances could be useful indicators for DBPs as these organic fractions had strong correlation with DBPs. Obvious spatio-temporal characteristics of GAC grain and microbial communities in BAC filter were observed with operation time and filter depth. The bacterial community in BAC filter was highly diverse and was less influenced by influent quality with an increase in filter depth, while the communities in UF cake layer correlated with organic removal in the UF system.
Keyword ：
Ultrafiltration Ultrafiltration Bacterial community Bacterial community Biological activated carbon (BAC) Biological activated carbon (BAC) Disinfection byproduct formation potential (DBPFP) Disinfection byproduct formation potential (DBPFP) Organic fractions Organic fractions
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| GB/T 7714 | Chang, Haiqing , Yu, Haikuan , Li, Xing et al. Role of biological granular activated carbon in contaminant removal and ultrafiltration membrane performance in a full-scale system [J]. | JOURNAL OF MEMBRANE SCIENCE , 2022 , 644 . |
| MLA | Chang, Haiqing et al. "Role of biological granular activated carbon in contaminant removal and ultrafiltration membrane performance in a full-scale system" . | JOURNAL OF MEMBRANE SCIENCE 644 (2022) . |
| APA | Chang, Haiqing , Yu, Haikuan , Li, Xing , Zhou, Zhiwei , Liang, Heng , Song, Wuchang et al. Role of biological granular activated carbon in contaminant removal and ultrafiltration membrane performance in a full-scale system . | JOURNAL OF MEMBRANE SCIENCE , 2022 , 644 . |
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Abstract ：
大型超滤水厂PVC和PVDF膜运行特性差异与优化
Keyword ：
膜通量 膜通量 膜污染 膜污染 超滤 超滤 膜材质 膜材质 参数调控 参数调控
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| GB/T 7714 | 于海宽 , 李星 , 周志伟 et al. 大型超滤水厂PVC和PVDF膜运行特性差异与优化 [J]. | 于海宽 , 2021 , 37 (1) : 28-33 . |
| MLA | 于海宽 et al. "大型超滤水厂PVC和PVDF膜运行特性差异与优化" . | 于海宽 37 . 1 (2021) : 28-33 . |
| APA | 于海宽 , 李星 , 周志伟 , 蔡传义 , 田希彬 , 焦振涛 et al. 大型超滤水厂PVC和PVDF膜运行特性差异与优化 . | 于海宽 , 2021 , 37 (1) , 28-33 . |
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Abstract ：
建筑给水立管成环型式与水头损失消减效果研究
Keyword ：
最不利点 最不利点 建筑给水管道 建筑给水管道 立管成环 立管成环 水头损失 水头损失 流量 流量
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| GB/T 7714 | 刘航 , 杨艳玲 , 李星 et al. 建筑给水立管成环型式与水头损失消减效果研究 [J]. | 刘航 , 2021 , 47 (3) : 118-124 . |
| MLA | 刘航 et al. "建筑给水立管成环型式与水头损失消减效果研究" . | 刘航 47 . 3 (2021) : 118-124 . |
| APA | 刘航 , 杨艳玲 , 李星 , 周志伟 , 刘永旺 , 赵锂 et al. 建筑给水立管成环型式与水头损失消减效果研究 . | 刘航 , 2021 , 47 (3) , 118-124 . |
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Abstract ：
Silver-loaded stainless steel (Ag-SS) was applied in domestic hot water system (DHWS) to control the biofilm contamination. The antibacterial properties of Ag-SS, as well as the bacterial communities, potential pathogens and antibiotic resistance genes (ARGs) of pipe wall biofilm were investigated, with SS as control. Ag-SS main-tained a high antibacterial efficiency on heterotrophic bacteria (70.60 ? 13.22 %) and Escherichia coli (73.56 ? 10.62 %) by contact bacteriostasis. Dominant phyla exhibited a lower relative abundance in Ag-SS than SS. The bacteria were further classified into abundant (? 1 %), moderately abundant (0.1-1 %) and rare (? 0.1 %) taxa to investigate their responses to silver. There were 15.33 % of shared operational taxonomic units (OTUs) belonged to abundant taxa, while most unique OTUs (> 80 %) of each sample were identified as rare taxa. As the primary abundant genera, Mesorhizobium and Bradyrhizobium exhibited resistant and sensitive to silver, respectively. Most dominant moderately abundant and rare genera were resistant to silver. Moreover, among 19 detected potential pathogens, Legionella, Parachlamydia and Aeromonas were sensitive to silver, while Pseudo-monas and Acinetobacter were resistant to silver. Furthermore, a total of 48 ARGs were detected and they exhibited similar distributions in both samples. The total abundance of ARGs in Ag-SS increased by 0.08 fold compared with that in SS, with efflux pumps as the main resistance mechanisms. This study highlights the different responses of abundant, moderately abundant and rare taxa to silver, and the occurrences of ARGs, confirming that Ag-SS was an effective disinfection strategy for biosafety protection of DHWS.
Keyword ：
Pipe wall biofilm Pipe wall biofilm Antibiotic resistance genes Antibiotic resistance genes Silver-loaded stainless steel Silver-loaded stainless steel Antibacterial efficiency Antibacterial efficiency Abundant and rare taxa Abundant and rare taxa
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| GB/T 7714 | Li, Na , Li, Xing , Shi, Zhi-Yuan et al. Bacterial communities, potential pathogens and antibiotic resistance genes of silver-loaded stainless steel pipe wall biofilm in domestic hot water system [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2021 , 40 . |
| MLA | Li, Na et al. "Bacterial communities, potential pathogens and antibiotic resistance genes of silver-loaded stainless steel pipe wall biofilm in domestic hot water system" . | JOURNAL OF WATER PROCESS ENGINEERING 40 (2021) . |
| APA | Li, Na , Li, Xing , Shi, Zhi-Yuan , Fan, Xiao-Yan , Zhou, Zhi-Wei . Bacterial communities, potential pathogens and antibiotic resistance genes of silver-loaded stainless steel pipe wall biofilm in domestic hot water system . | JOURNAL OF WATER PROCESS ENGINEERING , 2021 , 40 . |
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