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SSRN 2023年

作者： Xia, Jing Cai, Jingju Wang, Ping Cao, Jingxiao Zhu, Jian Huang, Chengfeng Liu, Jiahao Liu, Junwu Fang, Yingchun College of Environmental Science and Engineering Central South University of Forestry and Technology Changsha410007 China Hunan Key Laboratory of Wetland and Soil Ecological Restoration College of Environmental Science and Engineering Central South University of Forestry and Technology Changsha410004 China College of Chemistry and Bioengineering Hechi University Guangxi Yizhou546300 China Hunan Kaidi Engineering Technology Co. Ltd. Changsha410004 China

A novelty in-situ heterogeneous electro-Fenton based on boron-modified and co-modified cathodes (B-CF, B, Fe-CF and B, Co-CF) was employed for phosphorus nutrients treatment in dredged sediment. During which B, Fe-CF (1:1) was the optimal cathode for phosphorus nutrients and organic matter treatment with organic phosphorus (OP), iron phosphate salt (Fe-P) conversion rates of 26.84% and 63.21%, respectively, due to the fact that the generated H2O2 on bifunctional cathode could produce ·OH with material surface reduced Fe(II). Characterized by SEM, XRD and XPS, B and Fe were successfully loaded on the electrode with elemental percentages of 0.99% and 4.40%, while B2O3 and Fe2O3 were detected. The operating parameters like initial pH and current density were explored. B, Fe-CF had a high stability and outstanding catalytic capacity for 5 cycles phosphorus nutrients treatment. The possible mechanism was also proposed based on the electron paramagnetic resonance (EPR) and radical quenching experiment, which demonstrated that ‧OH and SO4·- mainly contributed to phosphorus nutrients treatment. In this work, a highly efficient and stable carbon material was successfully prepared to treat refractory pollutants in dredging sediment, which provides new ideas and methods for subsequent resource utilization. © 2023, The Authors. All rights reserved.

关键词： Chemical modification

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In silico bioactivity prediction of proteins interacting with graphene-based nanomaterials guides rational design of biosensor

arXiv

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arXiv 2024年

作者： Ye, Jing Fan, Minzhi Zhang, Xiaoyu Lu, Shasha Chai, Mengyao Zhang, Yunshan Zhao, Xiaoyu Li, Shuang Zhang, Diming Research Center for Intelligent Sensing Systems Zhejiang Laboratory Hangzhou311121 China School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou215009 China College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou310018 China Academy of Medical Engineering and Translational Medicine Tianjin University Tianjin300072 China

Graphene-based nanomaterials have attracted significant attention for their potentials in biomedical and biotechnology applications in recent years，owing to the outstanding physical and chemical properties. However, the interaction mechanism and impact on biological activity of macro/micro biomolecules still require more concerns and further research in order to enhance their applicability in biosensors, etc. Herein, an integrated method has been developed to predict the protein bioactivity performance when interacting with nanomaterials for protein-based biosensor. Molecular dynamics simulation and molecular docking technique were consolidated to investigate several nanomaterials: C60 fullerene, single-walled carbon nanotube, pristine graphene and graphene oxide, and their effect when interacting with protein. The adsorption behavior, secondary structure changes and protein bioactivity changes were simulated, and the results of protein activity simulation were verified in combination with atomic force spectrum, circular dichroism spectrum fluorescence and electrochemical experiments. The best quantification alignment between bioactivity obtained by simulation and experiment measurements was further explored. The two proteins, RNase A and Exonuclease III, were regarded as analysis model for the proof of concept, and the prediction accuracy of protein bioactivty could reach up to 0.98. The study shows an easy-to-operate and systematic approach to predict the effects of graphene-based nanomaterials on protein bioactivity, which holds guiding significance for the design of protein-related biosensors. In addition, the proposed prediction model is not limited to carbon-based nanomaterials and can be extended to other types of nanomaterials. This facilitates the rapid, simple, and low-cost selection of efficient and biosafe nanomaterials candidates for protein-related applications in biosensing and biomedical systems. Copyright © 2024, The Authors. All rights reserved.

关键词： Proteins

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The Hydration of Ternary Blended Cements with Calcined Coal Gangue and Limestone

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SSRN 2024年

作者： Sun, Jinfeng Chen, Yiqing Hou, Pengkun Zhou, Hao Ma, Jian Zhang, Daan Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu Yancheng224051 China Shandong Provincial Key Lab for the Preparation and Measurement of Building Materials University of Jinan Shandong Jinan250022 China Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment of the People’s Republic of China Jiangsu Nanjing210042 China College of Environmental Science and Engineering Nanjing University of Information Science and Technology Jiangsu Nanjing210044 China

Kaolinite-type coal gangue (CG) originating from coal mining has demonstrated promising performance as a novel kind of supplementary cementitious material (SCM) after calcination. However, its synergistic use with limestone hasn’t yet been thoroughly investigated. In this paper, the hydration properties of ternary cements made of CCG and limestone were investigated, taking into account the effect of the kaolinite content in the CG. First, CCG was characterized using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR), followed by evaluation of the pozzolanic reaction by the bound water test. Then, the ternary systems were designed where 15%, 30%, 45% and 60% of the cement by mass was replaced by CCG and limestone with a fixed mass ratio of 2:1. The compressive strength of the mortars up to 28 days was measured and the strength efficiency combined with CO2 emission was also compared. Finally, the involved hydration mechanism was revealed using isothermal calorimetry, quantitative XRD, thermogravimetric (TG) analysis, scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP). The results showed that kaolinite in CG was transformed into metakaolin as calcined at 800 °C, which exhibited high pozzolanic activity, especially for the initial CG with higher kaolinite content. The use of CCG with more than 30% kaolinite in CG allows CCG and limestone to replace up to 30% by mass of cement while maintaining the compressive strength of cement from 7 days onwards. Microstructural studies revealed that the compressive strength of these ternary blended cements at 3 and 7 days was mainly dominated by cement hydration and the pozzolanic reaction between CCG and portlandite (CH), respectively. The synergistic addition of CCG together with limestone enhanced the precipitation of carboaluminate hydrates, which well refined the pore structure of the ternary blended cements, as evidenced by the significantly decreased critical pore size and the i

关键词： Hydration

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Long Short-Term Human Motion Prediction in Human-Robot Co-Carrying

Long Short-Term Human Motion Prediction in Human-Robot Co-Ca...

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International Conference on Advanced Robotics and Mechatronics (ICARM)

作者： Sisi Liu Kaihang Ye Mengda Geng Xinbo Yu Yi Xing Guoliang Li Wei He Beijing Advanced Innovation Center for Materials Genome Engineering School of Intelligence Science and Technology University of Science and Technology Beijing Beijing China Key Laboratory of Intelligent Bionic Unmanned Systems Ministry of Education University of Science and Technology Beijing Beijing China Institute of Materials Intelligent Technology Liaoning Academy of Materials Shenyang China School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing China

In this paper, a long short-term human motion prediction method based on long short-term memory (LSTM) is proposed in human-robot co-carrying task. Long-term human motion prediction is utilized to predict the human motion target in the task. If robot is aware of the target, robot will lead the task to reduce human's control efforts. If robot does not know the human motion target, human will lead the task towards the target. Short-term human motion prediction is involved in hybrid visual-force controller in dynamical level to reduce the motion delay in the process. Finally, the method is verified by experiment of human-robot co-carrying task.

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Reduction of Humid Vocs Produced in Cooking Procedure Through Adsorption on Mo-Mel Zeolites

SSRN

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SSRN 2022年

作者： Zhang, Yuanyuan Yu, Qingjun Yuan, Yuting Tang, Xiaolong Zhao, Shunzheng Yi, Honghong Department of Environmental Science and Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing100083 China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing100083 China

Based on the increasing public awareness of the pollution and hazard of cooking oil fume, MEL-type zeolites with different composition, including Si-MEL (all-silicon framework), Al-MEL (Si-Al framework) and Mo-MEL (Si-Mo framework), were synthesized through a self-developed recrystallization methodology and were applied into the reduction of cooking VOCs via adsorption process. Mo species is proved to exist both in the MEL zeolitic framework and MoO3 clusters through XRD, IR, N2 adsorption-desorption, SEM and UV-vis characterization. Water vapor adsorption isotherms and 29Si NMR results indicate Mo-MEL owns superior hydrophobicity because of its high level of atoms coordination and lack of silanols. Toluene-TPD and dynamic adsorption results reveal the enhanced affinity to VOCs molecular on Mo-MEL, superior than Si-MEL and Al-MEL. The Mo-contained sample shows a considerable VOCs capacity of 91.29 mg/g (RH=0%) and 82.75 mg/g (RH-20%), suggesting its application potential for the adsorption and enrich of cooking VOCs, especially in humid condition. © 2022, The Authors. All rights reserved.

关键词： Hydrophobicity

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Enhanced Aerobic Granular Sludge (Ags) By Thermally-Treated Dredged Sediment In Wastewater Treatment Under Low Superficial Gas Velocity (Sgv)

SSRN

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SSRN 2024年

作者： Lin, Qingxia Sun, Shiquan Yang, Jianbin Hu, Pei Liu, Zhengrong Liu, Ziqiang Song, Chuxuan Wu, Fangtong Gao, Yang Zhang, Wei Zhou, Lean Li, Yifu Yang, Suiqin Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province School of Hydraulic and Environmental Engineering Changsha University of Science and Technology Changsha410114 China Hunan Hengyong Expressway Construction and Development Co. Ltd. Hunan 421600 China

The resource utilization of dredged sediment has received extensive attention. To promote AGS formation and stability, the dredged sediment was thermally-treated to prepared as a carrier. The system was started under low SGV (0.6 cm/s) for a lower energy consumption. Two SBR reactors labeled R1 (no added carriers) and R2 (carriers added), were used in the experiment. R2 had excellent performance of granulation time (shortened nearly 43%). The maximum mean particle size at the maturity stage of AGS in R2 (0.545 mm) was larger compared to R1 (0.296 mm). It was found that the carriers stimulated the secretion of extracellular polymeric substances (EPS), which promoted AGS formation. The sludge settling performance in R2 was better. The reactors exhibited high chemical oxygen demand and ammonia nitrogen removal rates. The TP removal rate in R2 was higher than R1 (almost 15% higher) on stage II (93-175d). R2 had a higher microbial abundance and dominant bacteria content. The relative abundance of dominant species was mainly affected by the carrier. However, the enrichment of dominant microorganisms and the evolution of subdominant species were more influenced by the increase of SGV. This work provided a low-cost method and condition to enhance aerobic granulation. © 2024, The Authors. All rights reserved.

关键词： Chemical oxygen demand

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Enhancing the performances of all-small-molecule ternary organic solar cells via achieving optimized morphology and 3D charge pathways

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Chinese Chemical Letters 2021年第9期32卷 2904-2908页

作者： Yanhong Chang Jing Li Yilin Chang Yixiao Zhang Jianqi Zhang Kun Lu Xiangnan Sun Zhixiang Wei Department of Environmental Science and Engineering University of Science and Technology BeijingBeijing 100083China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083China University of Chinese Academy of Sciences Beijing 100049China Shandong First Medical University&Shandong Academy of Medical Sciences Taian 271016China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

With the emergence of non-fullerene acceptors(NFAs),the power conversion efficiencies(PCEs)of allsmall-molecule organic solar cells(ASM-OSCs)have been significantly ***,due to the strong crystallinities of small molecules,it is much more challenging to obtain the ideal phase separation morphology and efficient charge transport pathways for ***,a high-efficiency ternary ASMOSC has been successfully constructed based on H11/IDIC-4 F system by introduction of IDIC with a similar backbone as IDIC-4F but weak ***,the addition of IDIC has effectively suppressed large-scale phase aggregation and optimized the morphology of the blend *** importantly,the molecular orientation has also been significantly adjusted,and a mixed face-on and edge-on orientation has formed,thus establishing a more favorable three-dimensional(3D)charge pathways in the active *** these improvements,the enhanced short-circuit current density(JSC)and fill factor(FF)of the ternary system have been *** addition,because of the high lowest unoccupied molecular orbital(LUMO)energy level of IDIC as well as the alloyed structure of the IDIC and IDIC-4F,the promoted open circuit voltage(VOC)of the ternary system has also been realized.

关键词： All-small-molecule Ternary organic solar cells Alloyed acceptor Morphology optimization 3D charge pathways

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Time to Failure Estimation of Cryogenic Liquefied Tanks Exposed to a Fire 31st

Time to Failure Estimation of Cryogenic Liquefied Tanks Expo...

引用

31st European Safety and reliability Conference, ESREL 2021

作者： Ustolin, Federico Iannaccone, Tommaso Cozzani, Valerio Jafarzadeh, Sepideh Paltrinieri, Nicola Department of Mechanical and Industrial Engineering Norwegian University of Science and Technology NTNU Norway Laboratory of Industrial Safety and Environmental Sustainability Department of Civil Chemical Environmental and Material Engineering Alma Mater Studiorum-University of Bologna Italy SINTEF Ocean Norway

ISBN: (纸本)9789811820168

The density of different gaseous fuels can be increased for storage and transportation purposes trough the liquefaction process. The gases are converted to cryogenic fluids if liquefied by reducing their temperatures (e.g. for liquid hydrogen, LH2, and liquefied natural gas, LNG). Therefore, these cryogenic fuels must be stored in extremely well insulated tanks (double walled type with evacuated insulation). The ignition of an accidental fire in the vicinity of the cryogenic tank might cause the loss of integrity of the vessel. This event might lead to the catastrophic rupture of the vessel and provoke a major accident with many severe consequences. For this reason, the estimation of a potential time to failure (TTF) of the container in the worst-case scenario is critical. In this study, an analytical model was developed based on well-known thermodynamic equations, to estimate the heat transfer between the cryogenic tank and the surrounding fire in the worst-case scenario. The thermal conductivity of the double walled tank insultation is one of the most complex and critical parameters to evaluate. Different uncertainties regarding the vessel insulation were highlighted in the manuscripts. The outcomes of this model were validated against experimental results. Additional experimental tests are necessary to thoroughly validate the model and understand the behavior of the cryogenic vessels when exposed to a fire. This type of tests will be conducted for LH2 during the Norwegian project SH2IFT. © ESREL 2021. Published by Research Publishing, Singapore.

关键词： Liquefied natural gas

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Concrete-like high sulfur content cathodes with enhanced electrochemical performance for lithium-sulfur batteries

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Journal of Energy Chemistry 2020年第3期29卷 174-179页

作者： Bolan Gan Kaikai Tang Yali Chen Dandan Wang Na Wang Wenxian Li Yong Wang Hao Liu Guoxiu Wang Joint International Laboratory on Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyBroadwaySydneyNSW 2007Australia

Nowadays,lithium-sulfur batteries have attracted numerous attention due to their high specific capacity,high energy density,low cost and environmental ***,there are some critical challenges to be overcome such as low electronic conductivity and capacity fading caused by shuttle *** attempts have been conducted to improve the electrochemical performance by designing effective sulfur *** this paper,we synthesize a concrete-like sulfur/carbon cathode with high sulfur content(84%)by using 3D macroporous hosts with high pore *** strategies of using polarized carbon framework and polymer coating are applied to synergistically control the dissolution of polysulfides so that the capacity retention and high rate performance can be remarkably *** a result,the composite exhibits a specific discharge capacity of 820 mAhg-1at a discharge current of 800 mAg-1(approximate to 0.5 C)after 100 cycles,calculated on the integrated mass of composite,which is superior to most report results.

关键词： Lithium-sulfur batteries Cathode Polymer coating N-doping

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Migration and risk assessment of heavy metals from swine manure in an organic fertilizer - soil - ryegrass - rex rabbit system: Based on field trials

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science of the Total Environment 2025年 959卷 178332页

作者： Hao, Xiaoxia Liu, Kai Zhu, Li Rong, Li Jiang, Dongmei Bai, Lin Lab of Animal Ecology and Environmental Control College of Animal Science and Technology Sichuan Agricultural University Chengdu611130 China State Key Laboratory of Swine and Poultry Breeding Industry College of Animal Science and Technology Sichuan Agricultural University China Key Laboratory of Livestock and Poultry Multi-omics Ministry of Agriculture and Rural Affairs College of Animal Science and Technology Sichuan Agricultural University Sichuan Chengdu China Department of Civil and Architectural Engineering Aarhus University Inge Lehmanns Gade 10 Aarhus C 8000 Denmark

Organic fertilizers were produced through maggot-composting (MC) and natural composting (NC) using swine manure, and the migration, contamination, and health risks of heavy metals (Zn, Cu, Cd, Cr, Pb) were evaluated within a fertilizer - soil - ryegrass - Rex rabbit system. After 70 days of treatment, heavy metals were concentrated by 43.23 % to 100 % in MC and 52.82 % to 90.91 % in NC, higher concentration rate was observed in Cr and Cu in NC. The residual fractions of Zn, Cu, CD, Cr, Pb increased by 0.4 % to 30.2 % in MC, and 3.4 % to 29.7 % in NC. More stable forms of Zn, Cr, and Cu were observed in NC, whereas Pb showed greater stability in MC. Post-fertilization, statistically higher levels of the five elements were obtained in NC treatment. Even their concentrations decreased in the soil, however, high initial background levels caused Cr and Zn to exceed standard thresholds in both treatments. Despite this, the geo-accumulation index (Igeo) and pollution load index (PLI) below 1, did not indicate a pollution risk. Cr levels exceeded feed limits in both roots and leaves, although the low BCF value in roots suggested limited risk. In rabbits fed with 48 % ryegrass, significantly higher levels of Zn and Cu were detected in NC, with elevated Cr levels posed moderate to severe pollution risks in two treatments. Health risk assessments, including non-carcinogenic (HQf) and carcinogenic risks (CRf), revealed Cr was the most cautionary element for both children and adults, even no significant carcinogenic risk exist. These findings provide key insights into mitigating heavy metal contamination from animal waste to rabbit meat. © 2024 Elsevier B.V.

关键词： Heavy metals

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