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学者姓名：周志伟
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Abstract ：
The release of algal organic matter (AOM) during seasonal algal blooms increases the complexity and heterogeneity of natural organic matter (NOM) in water sources, altering its hydrophilic-hydrophobic balance and posing significant challenges to conventional water treatment processes. This study aims to verify whether the (Granular activated carbon) GAC selected for the adsorption of NOM in sand filtration effluent can adapt to water quality fluctuations caused by AOM release, and identify the criteria influencing GAC adsorption performance. Results indicated that external surface area, mesopore volume, pore size and surface functional groups were key indicators of GAC adsorption performance. AOM exposure increased the soluble microbial byproducts (SMP) and humic acid components in sand filter effluent, and induced the presence of high molecular weight biopolymers. The removal characteristics of sand filtration effluent spiked with AOM indicated that GAC preferentially adsorbed unsaturated bonds and aromatic compounds, as well as organic acids like fulvic and humic acids. Its adsorption primarily involved physical and chemical processes such as pore filling, hydrophobic interactions, and reactions between chemical functional groups. AOM exposure led to an increase in hydrophilic macromolecules such as polysaccharides and proteins, causing competitive adsorption and pore blockage. This study provided a theoretical basis for the efficient and rapid selection of GAC during outbreaks of AOM pollution.
Keyword ：
Granular activated carbon (GAC) Granular activated carbon (GAC) algal organic matter (AOM) algal organic matter (AOM) sand filtration effluent sand filtration effluent adsorption mechanism adsorption mechanism sand filtration effluent spiked with AOM sand filtration effluent spiked with AOM
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| GB/T 7714 | Han, Fei , Ding, Luming , Li, Xing et al. Adsorption adaptive response exposed to algal organic matter: correlation to the characteristics of granular activated carbon [J]. | ENVIRONMENTAL TECHNOLOGY , 2025 . |
| MLA | Han, Fei et al. "Adsorption adaptive response exposed to algal organic matter: correlation to the characteristics of granular activated carbon" . | ENVIRONMENTAL TECHNOLOGY (2025) . |
| APA | Han, Fei , Ding, Luming , Li, Xing , Zhou, Zhiwei , Lu, Zedong . Adsorption adaptive response exposed to algal organic matter: correlation to the characteristics of granular activated carbon . | ENVIRONMENTAL TECHNOLOGY , 2025 . |
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Abstract ：
The frequent occurrence of harmful algal blooms (HABs) has caused a significant impact on human society and the economy, and also poses a new challenge to conventional water treatment technology. In this study, a new process of photocatalysis-ultrafiltration (UF) was proposed: a novel visible-light photocatalyst of Bi2O3-TiO2/ PAC combined with polyethersulfone (PES) and ceramic membranes (CM). The removal efficiency of extracellular organic matter (EOM) extracted by Microcystis aeruginosa, membrane fouling behavior, and interfacial interaction in photocatalysis-ultrafiltration process were studied. The results indicated that the photocatalysis-UF (PES) process achieved optimal removal efficiencies of 40.2 % for dissolved organic carbon (DOC) and 51.7 % for UV254 after 30 min of photocatalysis. In the photocatalysis-UF (CM) process, the removal efficiencies for DOC and UV254 were 43.5 % and 53.7 %, respectively. Superoxide radicals (center dot O2-) played a predominant role in the photocatalysis of soluble microbial products (SMP) and humics, while hydroxyl radicals (center dot OH) were more effective in the oxidation of aromatic proteins. The photocatalysis-UF (CM) demonstrated significant removal of biopolymers (BP), whereas the photocatalysis-UF (PES) effectively retained low-molecular-weight neutral substances (LMW Neu). As the duration of photocatalysis prolonged, membrane fouling resistance initially decreased and then increased. Concurrently, the photocatalysis markedly diminished the interaction energy between the EOM and the UF, thereby enhancing the repulsive forces among EOM molecules, which in turn alleviated membrane fouling. With extended photocatalytic exposure, the PES fouling predominantly involved complete blocking, whereas the CM fouling was mainly due to cake layer formation. This study provides an in-depth mechanistic understanding of membrane fouling control in photocatalysis-UF process, offering technical support for the application of this technology in algae-laden water treatment.
Keyword ：
Photocatalysis Photocatalysis Interface energy Interface energy Membrane fouling Membrane fouling Ceramic membrane Ceramic membrane Polyethersulfone membrane Polyethersulfone membrane
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| GB/T 7714 | Zhao, Yuantian , Zhou, Zhiwei , Liu, Chunjiao et al. Ultrafiltration membrane fouling control caused by extracellular organic matter extracted from Microcystis aeruginosa: Role of visible light pre-photocatalysis and membrane characteristics [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 717 . |
| MLA | Zhao, Yuantian et al. "Ultrafiltration membrane fouling control caused by extracellular organic matter extracted from Microcystis aeruginosa: Role of visible light pre-photocatalysis and membrane characteristics" . | JOURNAL OF MEMBRANE SCIENCE 717 (2025) . |
| APA | Zhao, Yuantian , Zhou, Zhiwei , Liu, Chunjiao , Li, Xing , Wang, Tianyang , Qu, Fangshu . Ultrafiltration membrane fouling control caused by extracellular organic matter extracted from Microcystis aeruginosa: Role of visible light pre-photocatalysis and membrane characteristics . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 717 . |
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Abstract ：
Evaporation has been one of the most classic desalination processes on the Earth. When we try to use the power of water flow itself, the evaporation process can perform even better. Here, we report a hydrodynamic solardriven interfacial evaporation process which water evaporation rate can achieve 6.58 kg & sdot;m(-2)& sdot;h(-1) (over 100 times higher than natural evaporation). A waterwheel-structure solar interfacial evaporator was designed and assembled by printed filter papers. The evaporator can both rapidly distribute solution on the evaporation interface and be hydraulically driven to rotate continuously to improve the evaporation rate by water flow. The hydrodynamic solar-driven interfacial evaporation process successfully overcomes the problem of slow diffusion of water vapor, but also realizes the day-and-night operation of process and the self-cleaning of salt fouling. Apart from the application in solar desalination, the developed evaporator has great potentials in vapor production and salt recovery for industrial use.
Keyword ：
Salt fouling removal Salt fouling removal Day-and-night operation Day-and-night operation Hydrodynamic evaporation system Hydrodynamic evaporation system Ultra-high evaporation rate Ultra-high evaporation rate Dynamic solar-driven interfacial evaporation Dynamic solar-driven interfacial evaporation Waterwheel evaporator Waterwheel evaporator
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| GB/T 7714 | Ren, Jiawei , Xu, Jia , Tian, Shuangchao et al. Hydrodynamic solar-driven interfacial evaporation - Gone with the flow [J]. | WATER RESEARCH , 2024 , 266 . |
| MLA | Ren, Jiawei et al. "Hydrodynamic solar-driven interfacial evaporation - Gone with the flow" . | WATER RESEARCH 266 (2024) . |
| APA | Ren, Jiawei , Xu, Jia , Tian, Shuangchao , Shi, Ke , Gu, Tianyu , Zhao, Jiaheng et al. Hydrodynamic solar-driven interfacial evaporation - Gone with the flow . | WATER RESEARCH , 2024 , 266 . |
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Abstract ：
Photocatalysis-ultrafiltration is potentially considered to be one of the effective technologies for the advanced treatment of algae-laden water. However, the problems of nano-photocatalyst loss and membrane fouling during continuous operation greatly limit its practical application. Herein, a novel integrated photocatalysisultrafiltration (PC-UF) reactor, including a photocatalytic zone, a separation and reflux zone of the nanophotocatalyst of Bi2O3-TiO2/PAC (Bi-doped TiO2 nano-composites supported by powdered activated carbon) and an ultrafiltration zone was developed. The operating parameters of the PC-UF reactor were optimized, and the stability of PC-UF continuous operation as well as the mechanism of the decontamination and membrane fouling control were investigated. The results indicated that the PC-UF reactor was continuously operated for 63 d under the optimal conditions (Bi2O3-TiO2/PAC dosage of 1.0 g/L, UV lamp power of 12 W, aeration rate of 200 mL/min, hydraulic retention time of 4 h, membrane flux of 30 LMH, backwashing frequency of once every 90 min for 1 min), and no obvious loss of nano-photocatalyst was found. The average removal of UV254, DOC and turbidity was stable at 61.3 %, 47.5 % and 92.5 %. Photocatalysis mainly photo-degraded tryptophan, fulvic acid and humic substances fluorescent components, decomposed and mineralized organic matter with molecular weights of 10-5000 Da, and ultrafiltration mainly removed microbial metabolites and humic substances. Photocatalysis altered foulants properties by decomposing phenols, amines, and aldehydes, thereby reducing foulants-membrane attraction and converting foulant-foulant attraction into repulsion, thereby mitigating membrane fouling. This work provides new ideas for the development of integrated PC-UF equipment and their continuous operation.
Keyword ：
Algal organic matter Algal organic matter Photocatalysis-ultrafiltration integrated reactor Photocatalysis-ultrafiltration integrated reactor Membrane fouling Membrane fouling Interface energy Interface energy
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| GB/T 7714 | Wang, Tianyang , Zhou, Zhiwei , Liu, Chunjiao et al. Stability of a novel integrated photocatalysis-ultrafiltration reactor: Algal organic matter removal and membrane fouling alleviation mechanism [J]. | JOURNAL OF MEMBRANE SCIENCE , 2024 , 717 . |
| MLA | Wang, Tianyang et al. "Stability of a novel integrated photocatalysis-ultrafiltration reactor: Algal organic matter removal and membrane fouling alleviation mechanism" . | JOURNAL OF MEMBRANE SCIENCE 717 (2024) . |
| APA | Wang, Tianyang , Zhou, Zhiwei , Liu, Chunjiao , Li, Xing , Zhao, Yuantian . Stability of a novel integrated photocatalysis-ultrafiltration reactor: Algal organic matter removal and membrane fouling alleviation mechanism . | JOURNAL OF MEMBRANE SCIENCE , 2024 , 717 . |
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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 ：
一种比较不同天然有机物对抗生素光催化去除抑制程度大小的方法，属于水处理技术领域。将光催化材料投入到抗生素及天然有机物(NOM)复合溶液中，首先进行暗吸附达到吸附平衡，后续进行光催化氧化反应达到光催化氧化平衡，在吸附平衡和光催化氧化平衡后分别测量抗生素的浓度，计算光催化氧化速率常数k值；最后将k值与天然有机物(NOM)三项指标分别拟合，得到抗生素光催化氧化速率常数k值与天然有机物(NOM)特征紫外吸光度(SUVA)、荧光指数(FI)和E2/E3值之间的关系，进而判断出不同天然有机物对抗生素光催化氧化抑制程度的强弱，达到比较不同天然有机物对抗生素光催化去除抑制程度大小的目的。
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| GB/T 7714 | 周志伟 , 张睿鑫 , 李星 . 一种比较不同天然有机物对抗生素光催化去除抑制程度大小的方法 : CN202310005419.5[P]. | 2023-01-08 . |
| MLA | 周志伟 et al. "一种比较不同天然有机物对抗生素光催化去除抑制程度大小的方法" : CN202310005419.5. | 2023-01-08 . |
| APA | 周志伟 , 张睿鑫 , 李星 . 一种比较不同天然有机物对抗生素光催化去除抑制程度大小的方法 : CN202310005419.5. | 2023-01-08 . |
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Abstract ：
一种高效评选粉末活性炭吸附有机物性能指标的方法，属于水处理技术领域。将粉末活性炭进行预处理后，测定其孔隙结构参数和表面化学官能团性质以及对应的吸附容量，采用R软件计算PAC各理化特性与有机物吸附容量的相关系数值，通过综合分析确定PAC吸附有机物性能的关键指标。选取合适的方法定向修饰PAC理化特性，强化有机物吸附性能，进一步验证评选PAC吸附有机物性能关键指标的准确性。本发明拓宽了PAC应用范围，为PAC定向改性提供理论依据。
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| GB/T 7714 | 周志伟 , 姚燕燕 , 李星 et al. 一种高效评选粉末活性炭吸附有机物性能指标的方法 : CN202310022372.3[P]. | 2023-01-07 . |
| MLA | 周志伟 et al. "一种高效评选粉末活性炭吸附有机物性能指标的方法" : CN202310022372.3. | 2023-01-07 . |
| APA | 周志伟 , 姚燕燕 , 李星 , 于瑞 . 一种高效评选粉末活性炭吸附有机物性能指标的方法 : CN202310022372.3. | 2023-01-07 . |
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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 , 45 (17) : 3405-3417 . |
| 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 45 . 17 (2023) : 3405-3417 . |
| 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 , 45 (17) , 3405-3417 . |
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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 , 45 (18) : 3635-3647 . |
| MLA | Zhou, Zhiwei et al. "Fate of sulfamerazine by synchronous adsorption and photocatalysis dependent on natural organic matter properties" . | ENVIRONMENTAL TECHNOLOGY 45 . 18 (2023) : 3635-3647 . |
| 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 , 45 (18) , 3635-3647 . |
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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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