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Remediation of Groundwater Contaminated with Sulfonamides Through In-Situ Activation of Peroxymonosulfate by Supported Hierarchical Cuo/Mgo Nanosheets

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SSRN 2022年

作者： Wang, Gen Liu, Zhuoyue Ge, Lei Wang, Ke Yin, Haochen Pang, Yumeng Yang, Shengjiong Miao, Delu Shaanxi Key Laboratory of Environmental Engineering School of Environmental and Municipal Engineering Xi’an University of Architecture and Technology Shaanxi Xi’an710055 China China Southwest Architectural Design and Research Institute Co. Ltd Sichuan Chengdu610084 China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Groundwater contamination by sulfonamides (SAs) has aroused great concern due to their potential risks to ecosystem and public health. In this work, for the first time, simultaneous degradation different SAs was studied via a single oxygen dominated peroxymonosulfate (PMS) activation process. Recoverable hierarchical CuO/MgO nanosheets (NSs), which was in situ grown on monolithic minerals, was synthesized and employed as a PMS activator. Effective degradation of sulfamethoxazole (SMX), sulfamethazine (SMZ), sulfadiazine (SDZ), sulfamerazine (SMR) and sulfathiazole (STZ) was obtained by PMS activated over CuO/MgO NSs. In a fixed-bed column of the supported hierarchical CuO/MgO NSs, simultaneous degradation of different SAs in complicated water matrix was observed with high removal efficiency, long-term stability and strong anti-interference capability toward background constituents of groundwater matrix. Mechanistic studies elucidated that incorporating CuO with defective-rich MgO induced highly oxidative Cu3+. Then PMS was activated by CuO and MgO synergistically via the redox cycle of Cu3+/Cu2+ and oxygen vacancies on MgO. Singlet oxygen (1O2) was proved to be responsible for the degradation of SAs. This study may help to understand the simultaneous degradation of different SAs in a nonradical oxidation process and provide a feasible technology for remediating SAs-contaminated groundwater. © 2022, The Authors. All rights reserved.

关键词： Nanosheets

Enhanced Mass Transfer to Suppress Nonuniform Iron Formation in Carbon-Free Low-Temperature Electrolytic Iron

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SSRN 2024年

作者： Ling, Junhao Yang, Haitao State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences P. O. Box 353 Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China

In the era of industrialization transitioning towards low-carbon solutions, low-temperature electrolytic iron technology is viewed as a key solution to the high carbon emissions and energy consumption issues faced by the smelting industry. However, in the ferrous sulfate system of electrolytic iron, there is a strong competitive reaction between hydrogen ions and iron ions on the cathode surface. The periodic evolution of hydrogen bubbles restricts mass transfer, leading to significant voltage fluctuations and decreased product quality during the electrolysis process. To address these challenges, this study optimized the flow field design by introducing shear flow to enhance bubble detachment speed and control the hydrogen evolution reaction. Finite element analysis indicated that the optimized flow field design reduced pressure drop and concentration polarization, thereby promoting electrolyte circulation. Experimental and electrochemical testing results demonstrated that the current efficiency and diffusion coefficient increased by 13.5% and 23.76%, respectively, while the solution resistance decreased by 4.6Ω. This research provides a practical and reliable technical pathway for scaling up production. © 2024, The Authors. All rights reserved.

关键词： Smelting

An Interesting Nano-Linear Nickel-Substituted Strandberg-Type Phosphomolybdate Acting as a Conformation Modulator Anti-Misfolding Peptide

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SSRN 2024年

作者： Ma, Xiang Li, Haodong Zhao, Ziqi Zhang, Lele Su, Haipeng Zhao, Yutong Sun, Yusheng Li, Changchun Wang, Yanqing Hua, Jiai Department of Chemistry and Chemical Engineering Taiyuan Institute of Technology Taiyuan030008 China Laboratory of Biochemistry and Pharmacy Taiyuan Institute of Technology Taiyuan030008 China School of Chemistry and Environmental Engineering Yancheng Teachers University Yancheng City224002 China State Key Laboratory of Coordination Chemistry Nanjing University Nanjing210023 China

Over the course of several decades, a consistent correlation has been observed between amyloid β-peptide (Aβ) aggregates and the progression of Alzheimer's disease (AD), characterized by the misfolding of β-sheet peptide conformation. Therefore, it is recommended that modulation of the misfolding modes of Aβ be considered as a pivotal anti-AD strategy. The present study reports the synthesis and structural characterization of a nano-linear nickel-substituted Strandberg-type phosphomolybdate (H2en)6{[Ni(H2O)4](P2Mo5O23)}3 (abbreviated as NiPM) (en = ethanediamine), which was thoroughly analyzed using elemental analyses, IR spectrum, single-crystal X-Ray diffraction (SXRD), X-ray photoelectron spectroscopy (XPS), and bond valence sums (Σs). This finding elucidates that the primary molecular structural unit of NiPM comprises alternatingly interconnected nickel-complex [Ni(H2O)4]2+ and [P2Mo5O23]6– clusters, forming a one-dimensional nanoscale framework in NiPM. Remarkably, each cyclic unit of the NiPM chain comprises three analogous {[Ni(H2O)4](P2Mo5O23)}4– units that exhibit distinct chemical environments in the solid state, a phenomenon rarely observed in polyoxometalate research. The purity and stability of the samples were assessed using powder X-ray diffraction (PXRD), UV-Vis spectroscopy, and thermogravimetric analysis (TGA) to ensure their quality. The results suggest that the molecular structure of NiPM can remain intact in aqueous solutions with a pH range of 6 to 9 at room temperature. Furthermore, it was discovered that NiPM has the capacity to modulate the β-sheet rich conformation of Aβ aggregates by coordination effects. © 2024, The Authors. All rights reserved.

关键词： Thermogravimetric analysis

Electrokinetically-delivered persulfate coupled with thermal conductive heating for remediation of petroleum hydrocarbons contaminated low permeability soil

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Chemosphere 2024年 356卷 141914页

作者： Zhang, Meng Feng, Meiyun Xu, Zhiqiang Li, Jianan Peng, Chong Institute of Applied Ecology Chinese Academy of Sciences Shenyang110016 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resource and Environmental Engineering East China University of Science and Technology Shanghai200237 China State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Dalian116024 China Zhejiang Tiandi Environmental Protection Technology Co. Ltd. Hangzhou310000 China

In this study, electrokinetically-delivered persulfate (PS) coupled with thermal conductive heating (TCH) method was proposed for the remediation of petroleum hydrocarbons (PHs) contaminated low-permeability soil, based on the investigation of PS injection and activation by different electric field form, effective heating radius of TCH to activate PS, and their influencing factors. The uniform delivery and effective activation of PS were unrealizable by one-dimensional electric field (1 V/cm) with the operation of cathode injection, anode injection, bipolar injection, polarity-reversal, or bipolar injection coupled polarity-reversal, which would result in large spatial difference of soil pH and PHs residual. Similar results were obtained under the two-dimensional symmetric electric field (TEF) due to the large spatial difference in electric field intensity. Superimposed electric field (SEF, 1 V/cm) that based on the intermittent worked electrode groups coupled with polarity-reversal (every 3 h) and bipolar injection (10% PS solution) operation could achieve homogenized mass transfer of PS (53.8–65.7 g/kg, average 60.0 g/kg) in 15 days, due to the positive correlation between electric field intensity and transport of ionic substance. Meanwhile, the difference in decontamination efficiency caused by difference in PS activation efficiency could be reduced, since the heating rod was placed at the position where the concentrations of PS was the lowest, whereat the removal of PHs could not rely on alkali activated PS (cathode), anodic oxidation (anode), and electrochemical activated PS (cathode and anode). The residual concentration of PHs in soil remediated by SEF/PS-TCH was in the range of 640.7–763.8 mg/kg (average 701.5 mg/kg), and the corresponding removal efficiency was 73.3%–77.6% (average75.4%). The research can provide an in-situ remediation method for organic contaminants in low permeability soil featured with more uniform PS injection and activation, and small

关键词： Chemical activation

Sequential Assembly Enabled Surface Precise Imprinting on Janus Nanosheets for Highly Specific Separation of Adenosine 5'-Monophosphate

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SSRN 2022年

作者： Pan, Jianming Wang, Pan Ma, Yue Tian, Xiaohua Niu, Xiangheng Luo, Jianquan School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang212013 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing10090 China

Precise control of imprinting processes and reasonable selection of molecularly imprinted polymers’ (MIPs) carriers are essential for realizing highly selective and fast separation. In this work, Janus polymer nanosheets (J-PNs) with different wettabilities on two sides were synthesized by self-polymerizing dopamine based on octadecylamine (ODA) lamellae with a bilayer structure, followed by a sequential imprinting assembly of low pKa boronic acid and pyrimidine base monomers on the hydrophilic side of J-PNs to prepare Janus imprinting sorbents (J-MIPs) for highly specific separation of adenosine 5'-monophosphate (AMP). The sequential assembly strategy integrated two different functional monomers together to simultaneously interact with the surrounding template AMP molecule and to precisely control the imprinting site orientation, enabling the resulting J-MIPs with strong and specific binding toward AMP. Janus amphiphilic J-MIPs can be well fixed at the dodecane/water interface, which was benefit for their fast recycle and simple regeneration, and the uptake amount of the fifth adsorption/elution cycle was 86.08% of the first one. The equilibrium time and maximum adsorption capacity of tailor-made J-MIP were 4.0 h and 13.69 μmol g -1 at 298 K, respectively. Taking the advantage of cooperative multi-point interaction, binding sites with high affinity to AMP accounted for about 76.71% of the total sites, and the high imprinting factor (2.182) of the J-MIP against non-imprinted counterpart was observed. In addition, 61.30% of AMP in spiked human serum sample can be selectively extracted by J-MIPs, due to the highly specific receptor sites from sequential imprinting assembly. © 2022, The Authors. All rights reserved.

关键词： Nanosheets

Techno-Economic Analysis of Small-Scale Ammonia Production Via Sorption-Enhanced Gasification of Biomass

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SSRN 2024年

作者： Dziva, Godknows Luan, Chuanbao Ding, Guangchao Boré, Abdoulaye Kouakou, Kouame Jean Ives Tembo, Tinashe Ullah, Atta Zaman, Muhammad Li, Songgeng Zeng, Liang Key Laboratory for Green Chemical Technology Ministry of Education School of Chemical Engineering and Technology Tianjin University Tianjin300072 China State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Tianjin Key Lab of Biomass/Wastes Utilization School of Environmental Science and Engineering Tianjin University Tianjin300072 China Lehtrar Road P.O. Nilore Islamabad45650 Pakistan

Biomass gasification is a green and efficient pathway for lowering the carbon footprint of ammonia production. Decentralized, small-scale biomass gasification plants ( © 2024, The Authors. All rights reserved.

关键词： Ammonia

Preparation and Properties of Decellularized Sheep Kidney Derived Matrix Scaffolds 9

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Preparation and Properties of Decellularized Sheep Kidney De...

9th Annual International Conference on Material Science and Environmental engineering, MSEE 2021

作者： Zheng, Le Zheng, Shuangshuang Chen, Zilong Li, Xiangqin Liu, Chunyan Bai, Jie Jiang, Daqing Nie, Yi Zhang, Jingying Liu, Tianqing Song, Kedong State Key Laboratory of Fine Chemicals Dalian R&D Center for Stem Cell and Tissue Engineering Dalian University of Technology Dalian116024 China The Second Clinical Medical College Guangdong Medical University Guangdong Dongguan523808 China Zhengzhou Institute of Emerging Industrial Technology Zhengzhou450000 China Department of Nephrology Second Affiliated Hospital of Dalian Medical University Liaoning Dalian116000 China Department of Breast Surgery Cancer Hospital of China Medical University Shenyang110042 China Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Scaffolds from tissues or organs have nanoscale microstructures. Derived matrix scaffolds prepared by decellularized method can provide more cell attachment sites, which is conducive to cell adhesion, proliferation, differentiation and other physiological activities on scaffolds. In this study, the sheep kidney decellularized matrix scaffold was prepared by the method of decellularization. Due to the poor mechanical properties of the decellularized matrix, the cross linking method was adopted to enhance its mechanical properties. The decellularization efficiency of sheep renal matrix scaffolds was observed by scanning electron microscopy and histological staining, and the biocompatibility of the scaffolds was investigated by inoculating adipose derived stem cells. It was found that the scaffold had good decellularization effect and good pore structure. © 2022 institute of Physics Publishing. All rights reserved.

关键词： Scaffolds (biology)

Editorial for the Special Issue on Frontiers of Chemical engineering

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engineering 2021年第1期7卷 1-2页

作者： Jesse Zhu Junwu Wang Particle Technology Research Centre University of Western OntarioLondonON N6A 5B9Canada State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

The Eleventh Global Chinese Chemical Engineers Symposium(GCCES-11)was held on August 2–5,2019,in Chengdu,China,organized by the School of Chemical engineering of Sichuan *** GCCES is a prestigious and world-wide academic exchange platform organized by the Global Academy of Chinese Chemical Engineers(GACCE),for chemical engineers and scientists interested in innovation and professional development to gather,exchange ideas,and make *** focuses on a wide range of topics relevant to cutting-edge research,new technologies,and areas of emerging growth in chemical engineering and *** GCCES strongly promotes international academic exchanges and collaborations,facilitates cross-disciplinary integration and industrial-academic research co-operation,and encourages the professional development of young Chinese chemical engineers and scientists on the world stage.

关键词： professional engineer organized

The RNA-binding protein Musashi2 governs osteoblast-adipocyte lineage commitment by suppressing PPARγsignaling

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Bone Research 2022年第3期10卷 536-547页

作者： Jinlong Suo Sihai Zou Jinghui Wang Yujiao Han Lingli Zhang Chenchen Lv Bo Jiang Qian Ren Long Chen Lele Yang Ping Ji Xianyou Zheng Ping Hu Weiguo Zou Department of Orthopedic Surgery and Institute of Microsurgery on Extremities Shanghai Jiaotong University Affiliated Sixth People’s Hospital200233 ShanghaiChina Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationStomatological Hospital of Chongqing Medical University401147 ChongqingChina State Key Laboratory of Cell Biology Shanghai Institute of Biochemistry and Cell BiologyCAS Center for Excellence in Molecular Cell SciencesChinese Academy of SciencesUniversity of Chinese Academy of Sciences200031 ShanghaiChina Guangzhou Laboratory No.9 XingDaoHuan RoadGuanghzou International Bio lsland510005 GuangzhouChina Colorectal Cancer Center/Department of Gastrointestinal Surgery Shanghai Tenth People’s Hospital Affiliated to Tongji UniversityShanghaiChina Institute for Stem Cell and Regeneration Chinese Academy of Sciences100101 BeijingChina Bio-Research Innovation Center Shanghai Institute of Biochemistry and Cell BiologySuzhouChina

Osteoporosis caused by aging is characterized by reduced bone mass and accumulated adipocytes in the bone marrow cavity. How the balance between osteoblastogenesis and adipogenesis from bone marrow mesenchymal stem cells(BMSCs) is lost upon aging is still unclear. Here, we found that the RNA-binding protein Musashi2(Msi2) regulates BMSC lineage commitment. Msi2 is commonly enriched in stem cells and tumor cells. We found that its expression was downregulated during adipogenic differentiation and upregulated during osteogenic differentiation of BMSCs. Msi2 knockout mice exhibited decreased bone mass with substantial accumulation of marrow adipocytes, similar to aging-induced osteoporosis. Depletion of Msi2 in BMSCs led to increased adipocyte commitment. Transcriptional profiling analysis revealed that Msi2 deficiency led to increased PPARγ ***-interacting protein immunoprecipitation assays demonstrated that Msi2 could inhibit the translation of the key adipogenic factor Cebpα, thereby inhibiting PPAR signaling. Furthermore, the expression of Msi2 decreased significantly during the aging process of mice, indicating that decreased Msi2 function during aging contributes to abnormal accumulation of adipocytes in bone marrow and osteoporosis. Thus, our results provide a putative biochemical mechanism for aging-related osteoporosis, suggesting that modulating Msi2 function may benefit the treatment of bone aging.

关键词： adipocyte osteoporosis inhibiting