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摘要 ：
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 等. "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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摘要 ：
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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摘要 ：
Ultrafiltration (UF) is an effective technology for treating algae-containing water. The algal intracellular organic matter (IOM) released by dead algae during an excessive algae growth phase causes more serious membrane fouling than viable algal cells and algal extracellular organic matter (EOM), which seriously restricts stable operation of UF. This paper studied the removal of IOM by a Bi2O3-TiO2/PAC (Bi-doped TiO2 nano-composites supported by powdered activated carbon) photocatalytic oxidation-ceramic ultrafiltration membrane, the inhibitory effect of membrane fouling at different photocatalytic oxidation times, and the fouling mechanism. The results show that both the adsorption and photocatalytic oxidation of Bi2O3-TiO2/PAC can significantly remove proteinoids and humic acid-like fluorescent components present in IOM, with removals of UV254 and DOC reaching up to 81.8% and 44.0%. The generated superoxide radicals and hydroxyl radicals positively affect the degradation of organic compounds of various molecular weights, and holes mainly degrade acidic low -molecular weight organic compounds. When the photocatalytic oxidation time was extended to 60 min, the membrane flux increased by 70.7% and the reversible resistance and irreversible resistance decreased by 83.4% and 90.1%, respectively. Under these conditions, the fouling mechanism changed from complete blockage to intermediate blockage. In the late stage of photocatalytic oxidation (90-120min), part of the high and medium molecular weight organic components were oxidized to produce low-molecular weight organic compounds (LMW acidic and neutral organic compounds), and blockage of filter cake became the main fouling mechanism. After photocatalysis, the zeta potential decreases significantly and the interaction forces between pollutants and pollutants are transformed into repulsive forces. Application of an appropriate photocatalytic oxidation time can alleviate the ultrafiltration membrane fouling caused by algal-derived organics.
关键词 ：
Visible light photocatalysis Visible light photocatalysis Ceramic membrane fouling Ceramic membrane fouling Intracellular organic matter Intracellular organic matter Microcystis aeruginosa Microcystis aeruginosa
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| GB/T 7714 | Liu, Chunjiao , Zhou, Zhiwei , Li, Xing et al. Visible light photocatalysis alleviates ceramic membrane fouling caused by intracellular organic matter of Microcystis aeruginosa [J]. | JOURNAL OF MEMBRANE SCIENCE , 2023 , 680 . |
| MLA | Liu, Chunjiao et al. "Visible light photocatalysis alleviates ceramic membrane fouling caused by intracellular organic matter of Microcystis aeruginosa" . | JOURNAL OF MEMBRANE SCIENCE 680 (2023) . |
| APA | Liu, Chunjiao , Zhou, Zhiwei , Li, Xing , Yu, Rui , Chang, Haiqing , Ren, Jiawei et al. Visible light photocatalysis alleviates ceramic membrane fouling caused by intracellular organic matter of Microcystis aeruginosa . | JOURNAL OF MEMBRANE SCIENCE , 2023 , 680 . |
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摘要 ：
Algal intracellular organic matter (IOM), released during algae's normal growth phase and water treatment processes, has long been a source of significant membrane fouling, considerably limiting the effective use of ultrafiltration(UF) technology. In this study, a Bi-doped TiO2 composite with powdered activated carbon (Bi2O3-TiO2/PAC) was loaded on ceramic UF membranes by vacuum filtration, and the prepared photocatalytic modified ceramic membranes (MCMs) were investigated for the removal of IOM and the mitigation of membrane fouling at different loading levels and under three operating conditions: Dark, Dark-UV, and UV. The results showed that the photocatalytic MCMs were able to remove the protein and humic acid fluorescent components of IOM and decompose or mineralize organic matter with molecular weights of 10-50 kDa. Under the Dark, Dark UV, and UV conditions, the final normalized flux of MCM-2.88 was significantly increased by 22.6 %, 82.1 %, and 108.0 %, respectively. The hydrophilicity of MCMs not only transformed the interactions between IOM and the membrane into repulsive forces, but also the composite material on the membrane surface transforms the membrane fouling mechanism from intermediate blocking model to cake layer formation. Furthermore, the application of photocatalytic oxidation under the Dark-UV and UV conditions yielded a reduction in both reversible and irreversible fouling. This action led to an increased hydrophilicity and elevated free energy of adhesion with IOM during the filtration process. Moreover, the main fouling mechanism changed into complete or intermediate blocking. These outcomes collectively underscore the capability of MCMs to alleviate membrane fouling induced by IOM. This advancement holds substantial promise for the advancement and widespread implementation of photocatalytic ceramic membrane filtration techniques.
关键词 ：
Photocatalytic-ultrafiltration Photocatalytic-ultrafiltration Intracellular organic matter Intracellular organic matter Membrane filtration model Membrane filtration model Pre-coated photocatalytic membrane Pre-coated photocatalytic membrane
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| GB/T 7714 | Zhou, Zhiwei , Yan, Jiakang , Li, Xing et al. The pre-coated photocatalytic ceramic membrane with Bi2O3-TiO2/ powdered activated carbon nanoparticles to alleviate ultrafiltration fouling caused by intracellular organic matter of Microcystis aeruginosa [J]. | JOURNAL OF MEMBRANE SCIENCE , 2023 , 693 . |
| MLA | Zhou, Zhiwei et al. "The pre-coated photocatalytic ceramic membrane with Bi2O3-TiO2/ powdered activated carbon nanoparticles to alleviate ultrafiltration fouling caused by intracellular organic matter of Microcystis aeruginosa" . | JOURNAL OF MEMBRANE SCIENCE 693 (2023) . |
| APA | Zhou, Zhiwei , Yan, Jiakang , Li, Xing , Ren, Jiawei , Liang, Heng , Liu, Yongwang . The pre-coated photocatalytic ceramic membrane with Bi2O3-TiO2/ powdered activated carbon nanoparticles to alleviate ultrafiltration fouling caused by intracellular organic matter of Microcystis aeruginosa . | JOURNAL OF MEMBRANE SCIENCE , 2023 , 693 . |
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摘要 ：
The rapid maturation of the gravity-driven membrane (GDM) process for manganese removal from surface water is critical to its practical application. In this study, KMnO4 and NaClO were used to investigate their effects on the start-up period of the GDM process for treating manganese-containing surface water. The start-up period of the GDM system with KMnO4 (24 days) was shorter compared to that with NaClO (40 days). After the addition of KMnO4 and NaClO, the stable flux of the GDM system was significantly improved, and the bio-cake layer became more porous, which was ascribed to the reduction of proteins in the extracellular polymeric substances (EPS). The active manganese oxide (MnOx) in the bio-cake layer was identified as delta-MnO2. The addition of the oxidants increased the proportion of Mn(III) with high catalytic oxidation activity in delta-MnO2, where the assisted effect of KMnO4 (43.7%) was superior to that of NaClO (27.8%). The development of delta-MnO2 in the natural filtration state was ascribed to the enrichment of manganese oxidizing bacteria (MnOB). The biological action only accounted for 9.4%-12.3% of the manganese removal and was not dominant. The difference in the start-up period of the GDM process was dependent on the autocatalytic oxidation of Mn(III) in delta-MnO2 in the bio-cake layer. These findings provided acceptable and practical strategies for the rapid and safe manganese removal in the GDM process.
关键词 ：
Gravity-driven membrane (GDM) Gravity-driven membrane (GDM) Bio-cake layer Bio-cake layer Manganese oxide regulation Manganese oxide regulation Pre -oxidation Pre -oxidation Manganese removal Manganese removal
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| GB/T 7714 | Feng, Jianyong , Liu, Zhihao , Zhou, Zhiwei et al. Oxidants-assisted gravity-driven membrane (GDM) process for manganese removal from surface water: Rapid maturation and manganese oxide regulation [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 56 . |
| MLA | Feng, Jianyong et al. "Oxidants-assisted gravity-driven membrane (GDM) process for manganese removal from surface water: Rapid maturation and manganese oxide regulation" . | JOURNAL OF WATER PROCESS ENGINEERING 56 (2023) . |
| APA | Feng, Jianyong , Liu, Zhihao , Zhou, Zhiwei , Ren, Jianwei , Yang, Yanling , Li, Xing et al. Oxidants-assisted gravity-driven membrane (GDM) process for manganese removal from surface water: Rapid maturation and manganese oxide regulation . | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 56 . |
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摘要 ：
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.
关键词 ：
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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摘要 ：
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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摘要 ：
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.
关键词 ：
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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摘要 ：
一种改性沸石除锰滤料的制备及快速启动方法，属于饮用水净化领域，所述的改性沸石除锰滤料是以天然沸石为原料，依次与一定浓度NaOH溶液、MnCl2·4H2O溶液以及KMnO4溶液震荡接触并沥水烘干而制得，快速启动方法是在接触氧化除锰滤池运行的初期，依次通过改性沸石除锰滤料的吸附耦合催化氧化除锰、高锰酸钾的强化氧化除锰，以及锰质活性滤膜的接触氧化除锰与高锰酸钾的强化氧化除锰的交替进行而实现的。本发明可解决天然锰砂产量不足、成本高、现有的接触氧化除锰滤池启动期长、启动期间存在锰超标风险等问题，不受地区、原水水质、滤池滤速的影响，可灵活应对各种锰超标的水源水，保障接触氧化除锰滤池在整个运行期间出水锰的稳定达标。
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| GB/T 7714 | 李星 , 朱文博 , 杨艳玲 . 一种改性沸石除锰滤料的制备及快速启动方法 : CN202211022655.X[P]. | 2022-08-24 . |
| MLA | 李星 et al. "一种改性沸石除锰滤料的制备及快速启动方法" : CN202211022655.X. | 2022-08-24 . |
| APA | 李星 , 朱文博 , 杨艳玲 . 一种改性沸石除锰滤料的制备及快速启动方法 : CN202211022655.X. | 2022-08-24 . |
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摘要 ：
Membrane biofouling is a challenge for biocarriers facilitated gravity-driven membrane (GDM) systems to achieve high-efficiency filtration in decentralized drinking water treatment. The purpose of this study was to investigate the effects of vacuum ultraviolet (VUV) as a pretreatment on membrane fouling, permeate water quality and bacterial communities. VUV pretreatment was found to significantly reduce the cake layer resistance by 24.4% and the membrane pore resistance by 40.0% (p < 0.05), resulting in a 22.2% increase in stable flux. The removal of low molecular weight neutrals and protein-like materials was enhanced by 22.5% and 40.1% respectively after VUV pretreatment. The heterogeneity of the biofouling layer was improved by VUV pre-treatment, and the porosity and roughness were increased by 227.5% and 46.5%, respectively. The application of VUV pretreatment resulted in a larger nanoparticle size in the biofouling layer suspension (peak at 85.4 nm), improvement in the membrane hydrophilicity, and a decrease in protein-like substances adhesion. The richness and diversity of the bacterial community were decreased by VUV pretreatment. The bacterial community structure had the highest mantel correlation with biopolymers (r = 0.89). Overall, VUV pretreatment can be a promising strategy to effectively alleviate membrane biofouling in biocarriers facilitated GDM systems.
关键词 ：
Bacterial community Bacterial community Gravity -driven membrane Gravity -driven membrane Vacuum ultraviolet Vacuum ultraviolet Biopolymers Biopolymers Biofouling layer Biofouling layer
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| GB/T 7714 | Feng, Jianyong , Li, Xing , Li, Hang et al. Enhanced filtration performance of biocarriers facilitated gravity-driven membrane (GDM) by vacuum ultraviolet (VUV) pretreatment: Membrane biofouling characteristics and bacterial investigation [J]. | JOURNAL OF MEMBRANE SCIENCE , 2022 , 660 . |
| MLA | Feng, Jianyong et al. "Enhanced filtration performance of biocarriers facilitated gravity-driven membrane (GDM) by vacuum ultraviolet (VUV) pretreatment: Membrane biofouling characteristics and bacterial investigation" . | JOURNAL OF MEMBRANE SCIENCE 660 (2022) . |
| APA | Feng, Jianyong , Li, Xing , Li, Hang , Yang, Yanling . Enhanced filtration performance of biocarriers facilitated gravity-driven membrane (GDM) by vacuum ultraviolet (VUV) pretreatment: Membrane biofouling characteristics and bacterial investigation . | JOURNAL OF MEMBRANE SCIENCE , 2022 , 660 . |
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