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SSRN 2023年

作者： Gao, Yongyi Chen, Ting Hou, Yifan Xue, Ruiyun Liu, Rui Chen, Fu Zhang, Yongming Rittmann, Bruce E. Department of Environmental Engineering School of Environmental and Geographical Science Shanghai Normal University Shanghai200234 China Zhejiang Provincial Key Laboratory of Water Science and Technology Department of Environmental Technology and Ecology Yangtze Delta Region Institute of Tsinghua University Jiaxing Zhejiang314006 China Biodesign Swette Center for Environmental Biotechnology Arizona State University TempeAZ85287-5701 United States

Although N-methyl pyrrolidone (NMP) is biodegradable, normal activated sludge exhibits poor NMP biodegradation unless it is acclimated with NMP for an extended time. In this work, glucose-acclimated biomass (GAB) was acclimated with NMP for over two months to obtain NMP-acclimated biomass (NAB). NAB was superior to GAB for NMP biodegradation, and this correlated to higher abundances of the genera Mycobacterium, Amaricoccus, and Thauera in NAB. However, when GAB was bioaugmented with Methylobacterium organophilum or Sphingomonas melonis, which were isolated from NAB based on their growth on NAB, the bioaugmented GAB immediately showed rapid biodegradation of NMP. M. organophilum was superior to S. melonis for accelerating NMP biodegradation, and the acceleration of NMP biodegradation was proportional to the mass of M. organophilum or S. melonis added. A key finding was that the limiting step for NMP mineralization was biodegradation of monomethylamine, an NMP-biodegradation intermediate that also is inhibitory. Bioaugmenting M. organophilum and S. melonis accelerated NMP biodegradation by enhancing monomethylamine removal, with M. organophilum being superior to S. melonis. The documented rapid impact of bioaugmentation can make it especially valuable in response to an input of a toxicant. © 2023, The Authors. All rights reserved.

关键词： Biodegradation

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EFSM Test Data Generation Based on Fault Propagation and Multi-Population Genetic Algorithm 7

EFSM Test Data Generation Based on Fault Propagation and Mul...

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7th International Conference on Dependable Systems and Their Applications, DSA 2020

作者： Cao, Zhiqin Wang, Yichen Guo, Peng Tian, Bo Beihang University School of Reliability and Systems Engineering Beijing China Science and Technology on Reliability and Environental Engineering Laboratory Beihang University Beijing China Industry Computing Institute Beijing China

ISBN: (纸本)9780738124223

EFSM is widely used in the modeling of control systems and protocols. Genetic algorithm is often used in EFSM test data generation due to its good performance. However, genetic algorithm tends to converge prematurely in complex search space and fall into local optimum, which leads to poor search efficiency. At the same time, test cases generated by genetic algorithm for EFSM have the problem of poor defect detection ability. Aiming at the above two problems, we improve genetic algorithm based on fault propagation assumption and multi-population strategy, design and implement the multi-population genetic algorithm based on fault propagation. In order to verify the performance of the improved algorithm, we design and conduct a control experiment, the results of the experiment show that the algorithm we proposed can effectively solve the problem of falling into local optimum and has advantages in defect detection. © 2020 IEEE.

关键词： Genetic algorithms

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Unveiling the Contribution of Hexanuclear Clusters for Highly Selective Glucose Conversion on Metal–Organic Frameworks

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SSRN 2023年

作者： Yu, Shuning Huangfu, Chengyu Li, Yulin Yang, Anni Xing, Qinglei Wu, Yue Guo, Xianghai Lyu, Jiafei Department of Pharmaceutical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin300350 China Tianjin University Tianjin China Tianjin Key Laboratory for Marine Environmental Research and Service School of Marine Science and Technology Tianjin University Tianjin300072 China Key Laboratory of Ocean Observation Technology of Ministry of Natural Resources School of Marine Science and Technology Tianjin University Tianjin300072 China

Glucose conversion into fructose is a crucial step in the sustainable biorefinery industry. Metal–organic frameworks with abundant active metal centers have shown potential, but their specific contribution is not yet fully understood. In this study, mesoporous Zr-NU-1008 with hexanuclear clusters (M6) exhibited a higher glucose conversion of 54.7% with a fructose selectivity of 85.3% under optimized conditions compared with its microporous isomer and hafnium counterpart, highlighting the significance of extended pore structure and strong Lewis acidity of metal species. The lability of the capping modulator on the M6 cluster during catalysis was further realized, which enables tuning the activity by manipulating the capping modulator. Saturating the M6 cluster with the electron-withdrawing trifluoroacetate modulator achieved an excellent glucose conversion of 63.3% with a superior fructose selectivity of 86.0%. Besides, the recovered catalyst can be easily regenerated by reinstalling the modulator on the M6 cluster, restoring its catalytic activity. © 2023, The Authors. All rights reserved.

关键词： Fructose

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Recent advances in the mechanics of 2D materials

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International Journal of Extreme Manufacturing 2023年第3期5卷 31-86页

作者： Guorui Wang Hongyu Hou Yunfeng Yan Ritesh Jagatramka Amir Shirsalimian Yafei Wang Binzhao Li Matthew Daly Changhong Cao CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei230027People’s Republic of China Department of Mechanical Engineering McGill UniversityMontreal H3A0C3Canada Department of Civil Materials and Environmental EngineeringUniversity of IllinoisChicagoIL 60607United States of America

The exceptional physical properties and unique layered structure of two-dimensional(2D)materials have made this class of materials great candidates for applications in electronics,energy conversion/storage devices,nanocomposites,and multifunctional coatings,among *** the center of this application space,mechanical properties play a vital role in materials design,manufacturing,integration and *** emergence of 2D materials has also sparked broad scientific inquiry,with new understanding of mechanical interactions between 2D structures and interfaces being of great interest to the *** on the dramatic expansion of recent research activities,here we review significant advances in the understanding of the elastic properties,in-plane failures,fatigue performance,interfacial shear/friction,and adhesion behavior of 2D *** this article,special emphasis is placed on some new 2D materials,novel characterization techniques and computational methods,as well as insights into deformation and failure mechanisms.A deep understanding of the intrinsic and extrinsic factors that govern 2D material mechanics is further provided,in the hopes that the community may draw design strategies for structural and interfacial engineering of 2D material *** end this review article with a discussion of our perspective on the state of the field and outlook on areas for future research directions.

关键词： 2D materials mechanical property interfacial mechanics atomic force microscopy(AFM) in situ electron microscopy(SEM and TEM)

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Case study: Design optimization and field tests of a large geotextile mat cofferdam combined with steel sheet piles

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Geotextiles and Geomembranes 2025年第6期53卷 1257-1265页

作者： Ren, Yupeng Yang, Shuaidong Zhou, Mi Zhang, Xihong Li, Jinhui Tian, Yinghui State key laboratory of subtropical building and urban science South China Institute of Geotechnical Engineering South China University of Technology 381 Wushan Rd. Guangdong Guangzhou 510640 China College of water Conservancy and Hydropower Engineering Hohai University Jiangsu Nanjing 210098 China Hydraulic Engineering Research Institute Pearl River Water Resources Research Institute Guangdong Guangzhou 510640 China State key laboratory of subtropical building and urban science School of Marine Science and Engineering South China University of Technology 381 Wushan Rd. Guangdong Guangzhou 510640 China School of Civil and Mechanical Engineering Curtin Univ. Kent St. Bentley 6102 WA Australia Department of Civil and Environmental Engineering Harbin Institute of Technology (Shenzhen) Guangdong Shenzhen 518055 China Department of Infrastructure Engineering University of Melbourne Parkville 3010 Victoria (VIC) Australia

A case study on a large geotextile mat cofferdam combined with steel sheet piles was conducted using field testing and numerical simulation to optimize the design and assess its performance. The failure mechanism and overall stability were investigated by numerical simulation, considering potential influence factors, including pile length, width ratio (W2/W1), water level, and excavation depth. The width ratio was identified as a critical influencing factor. Specifically, an optimized ratio of W2/W1=0.6 demonstrated the best overall performance. When the steel sheet pile intersects the potential failure surface, the stability improvement is most significant, particularly with a length of 15 m in the current case. Field tests were employed to examine the performance of the optimized cofferdam design. Water level fluctuations, surface displacements, and both horizontal and vertical displacements at various depths were monitored to assess the cofferdam's behavior. Results from both numerical simulations and field monitoring conclusively affirm the cofferdam's capability to meet stringent safety criterion during the construction and operational phases. This work fills gaps in standardization of large geotextile mat cofferdam design by providing guidance on geometric configuration, reinforcement integration, and soft soil risk management, thereby advancing engineering practices for similar projects.

关键词： 2D numerical analysis Excavation Field tests Geotextile mat cofferdam Steel sheet pile Water level

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Synergistic effect enhances the peroxidase-like activity in platinum nanoparticle-supported metal—organic framework hybrid nanozymes for ultrasensitive detection of glucose

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Nano Research 2021年第12期14卷 4689-4695页

作者： Jing Li Jie Zhao Shengqiang Li Yang Chen Weiqiang Lv Jiahui Zhang Libing Zhang Zhen Zhang Xiaoquan Lu Tianjin Key Laboratory of Molecular Optoelectronic Department of ChemistrySchool of ScienceTianjin UniversityTianjin300072China Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Chemistry&Chemical EngineeringNorthwest Normal UniversityLanzhou730070China First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin Tianjin300000China School of Physics University of Electronic Science and TechnologyChengdu611731China

The metal—organic frameworks(MOFs)are expected as ideal biomimetic enzymes for colorimetric glucose detection because of their large surface areas,well defined pore structures,tunable chemical composition,and multi-functional ***,the intrinsically chemical instability and low mimetic enzyme activity of MOFs hinder the application of them in imitating the enzyme *** this work,we demonstrated a metal-MOF synergistic catalysis strategy,by loading Pt nanoparticles(Pt NPs)on MIL-88B-NH2(Fe-MOF)to increase peroxidase-like activity for the detection of *** induced electrons transfer from Pt atom to Fe atom accelerated the redox cycling of Fe^(3+)/Fe^(2+),improved the overall efficiency of the peroxidase-like reaction,and enabled the efficient and robust colorimetric glucose detection,which was proved by both experiments and density functional theory(DFT)***,the sensitivity and chemical stability of this synergistic effect strategy to detect the glucose are not affected by the complex external factors,which represented a great potential in fast,easy,sensitive,and specific recognition of clinical diabetes.

关键词： metal—organic frameworks Pt nanoparticles synergistic effect glucose detection

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Fractal Characteristics of Different-Scale Structures in Water Injection Coal and Their Control Mechanism on Dynamic Water Migration

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SSRN 2023年

作者： Liu, Zhen Yu, Zehan Yang, He Zhu, Muyao Sun, Shuyang Yao, Meiru Dong, Shuai Li, Zheng College of Safety and Environmental Engineering Shandong University of Science and Technology 579 Qianwangang Rd Huangdao District Qingdao266590 China State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province The Ministry of Science and Technology Shandong University of Science and Technology Qingdao266590 China

Clarifying the control mechanism of structures in water injection coal on dynamic water transportis fundamental for improving the effect of pre-wetting and dust reduction. Using nuclear magnetic resonance experimental system, we simulated realistic water injection coal seam conditions. We obtained the real mechanical environment of water injection coal seam, the T2 spectrum curves of the pore structure at different scales, realized a fine measurement of liquid permeability, proposed a method for calculating the fractal dimension of the specific surface area which combined a tortuosity fractal dimension algorithm, delineated micro-holes and medium-large holes, clarified the quantitative relationships between the structural porosity, the specific surface area, tortuosity, and permeability, and investigated the control mechanism of structural characteristics on the dynamic water transport process. The results showed that, under different mechanical environments, the fractal dimension of the specific surface area of micro-small pores was close to 2, while that of medium-large pores was close to 3. The former fractal dimension increased more obviously, indicating that medium-large pores are more easily compressed than micro–small ones . Under such conditions, the complexity of pore size distribution increased. Additionally, the fractal dimension increase of tortuosity was higher for medium–large pores than for micro–small pores, indicating that the hydraulic reconstruction process was more obvious at a larges scale. According to the quantitative relationship between structural porosity, the specific surface area, tortuosity, and permeability, medium–large pores control most of the dynamic water migration in the coal bodies of Daliuta Coal Mine, while the whole pore size range has an important influence on dynamic water migration in the coal bodies of Luling Coal Mine. Our findings provide a solid scientific basis for the development of hydraulic permeability technologies

关键词： Fractal dimension

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Microbial and functional resilience of a flocculent sludge-based partial denitrification-anammox system against cold temperature

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Bioresource technology 2025年 433卷 132706页

作者： Dai, Ben Zhou, Jingzhou Wang, Zuobin Yang, Yifeng Wang, Sen Wang, Zhenyu Yang, Shaobo Xia, Siqing State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China National Engineering Research Center of Dredging Technology and Equipment Key Lab of Dredging Technology CCCC Shanghai200082 China Co. Ltd Shanghai200092 China

The anammox process offers low-carbon, cost-effective solution for municipal wastewater treatment but faces challenges in non-tropical regions due to temperature sensitivity. This study investigated the nitrogen removal performance, microbial dynamics, and functional gene responses of an integrated partial denitrification-anammox (PDA) system using flocculent sludge under gradual and sudden temperature declines. The PDA process maintained stable nitrogen removal under gradual cooling, with effluent total nitrogen (TN) 2−-supply despite a decreased NO3−-to-NO2− conversion rate. Anammox activity progressively declined with temperature dropped, resulting in higher TN-concentration (reactor-concentration at 2 h, 20°C, ∼19 mg/L at 15 °C and ∼26 mg/L at 10 °C). Notably, anammox bacteria (AnAOB) remained functional despite reduced abundance. However, sudden cooling caused irreversible damage to AnAOB (cell may rupture), leading to NH4+-accumulation and system failure. Overall, these findings provide important insights into extending anammox technology to non-tropical wastewater treatment, enhancing its sustainable application. © 2025 Elsevier Ltd

关键词： Nitrogen removal

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Carbonyl and defect of metal-free biochar trigger electron transfer and 1O2 in peroxymonosulfate activation for carbamazepine degradation

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Process Safety and environmental Protection 2025年 199卷

作者： Hou, Fali Li, Wei Yang, Kaiying Yang, Daoli Zhu, Wenjie Luo, Yongming Gao, Xiaoya Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming650500 China The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province Kunming650500 China The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province Kunming650500 China

Developing highly anti-interference and nonmetallic peroxymonosulfate (PMS) based advanced oxidation systems is of great importance to remove the persistent contaminants. Herein, the modified biochar (MBC) by Na2CO3 was successfully prepared via ball milling and pyrolysis treatments. Characterization results showed that the MBC had better-developed porosity, richer C[dbnd]O content, higher defective degree, and lower charge-transfer resistance than the original biochar. The performance of CBZ removal by the MBC was systematically investigated in terms of biochar dosage, PMS concentration, pH, and water matrixes. 0.1 g/L MBC could firstly adsorb 44 % of CBZ (2.5 mg/L) within 20 min and then completely remove CBZ within 40 min in the presence 2.0 mM of PMS. A nonradical process of CBZ degradation dominated by 1O2 and electron transfer was identified via quenching experiments, electron paramagnetic resonance spectra, and electrochemical characterizations. Consequently, the MBC/PMS system could realize a high CBZ degradation in a wide pH range (3.0 −11.0), exhibit strong water matrixes tolerance, and display excellent performance in the real environmental water systems. Furthermore, the removal rate of CBZ could still reach 90 % after five reuses. Overall, this study developed an efficient metal-free biochar catalyst that demonstrates exceptional adaptability, stability, and reusability for removing emerging contaminants in environmental remediation applications. © 2025 The Institution of Chemical Engineers

关键词： Electron spin resonance spectroscopy

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LCA of municipal wastewater treatment

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Chemosphere 2023年 341卷 139952页

作者： Tsangas, Michael Papamichael, Iliana Banti, Dimitra Samaras, Petros Zorpas, Antonis A. Laboratory of Chemical Engineering and Engineering Sustainability Faculty of Pure and Applied Sciences Open University of Cyprus Giannou Kranidioti 89 Latsia Nicosia2231 Cyprus International Hellenic University Department of Food Science and Technology Laboratory of Technologies of Environmental Protection and Utilization of Food By-Products Sindos Thessaloniki57400 Greece

Wastewater treatment plants play a significant role in minimizing environmental pollution by treating wastewater and reducing the release of contaminants into the environment. However, their operation can still have an environmental footprint. Therefore, Life Cycle Assessment (LCA) of wastewater treatment provides a comprehensive framework to quantify the environmental impact of plants across various categories. By conducting LCA assessments, the environmental impacts of different scenarios or treatment technologies can be compared, enabling decision-makers to identify the most environmentally friendly options. This information helps in optimizing the plant's design, operation, and resource allocation to minimize their environmental burden. The current research hypothesis was to conduct an LCA of a typical activated sludge plant in Greece, considering three different scenarios in order to provide an innovative take on wastewater treatment plant foam waste and utilize them for the production of biogas through anaerobic digestion. The assessment was carried out using OpenLCA software as well as EcoInvent v3.3. database. The study focused on the impact assessment of five categories (eutrophication potential, acidification potential, global warming potential, ozone depletion, and photochemical ozone creation). The results indicated that the baseline scenario had the highest impact on these categories, followed by Scenario I, while Scenario II had the least impact. Additionally, the cumulative energy demand assessment showed that the baseline scenario required significantly more energy compared to Scenarios I and II. However, Scenario II, which involved fine screens and utilization of biogas, exhibited the highest energy production, thereby reducing the overall energy demands for the system. Based on these findings, it is crucial for wastewater treatment facilities to actively pursue energy demand mitigation strategies by implementing energy-efficient technologies and ut

关键词： Wastewater treatment

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