检索结果-内蒙古大学图书馆

Critical review on the abatement of endocrine disrupting chemicals using synthesized iron-based materials in persulfate systems: Reactive species, reaction mechanisms, and perspectives

引用

chemical engineering Journal 2025年 511卷

作者： Sun, Ye Huang, Ying Zheng, Shujie Chen, Haojia Pei, Jianchuan Yang, Yan Ji, Hongbing Han, Changseok School of Chemical Engineering and Light Industry School of Environmental Science and Engineering Guangdong University of Technology Guangzhou510006 China School of Environment Hangzhou Institute for Advanced Study UCAS Hangzhou310024 China School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology Guangxi University Nanning530004 China Synergy Innovation Institute of Guangdong University of Technology Shantou515041 China School of Environment and Resources Zhejiang A&F University Hangzhou311300 China Department of Environmental Engineering INHA University Incheon22212 Korea Republic of Program in Environmental and Polymer Engineering of INHA University Incheon22212 Korea Republic of

Persulfate-based advanced oxidation processes have emerged as promising technologies for mitigating endocrine-disrupting chemicals (EDCs) in wastewater treatment. Economically viable Fe-based materials with tailored properties have demonstrated significant efficacy in activating persulfate for the decomposition of EDCs through both radical routes (∙OH, SO4∙−, and O2∙−) and non-radical routes (1O2, surface activated PS complex, and high-valent Fe species). This review summarized the latest advancements in the persulfate activation mechanisms mediated by Fe-based materials, categorized by Fe valence states and the types of reactive species. Furthermore, it critically assesses the influence of active sites of Fe-based catalysts on persulfate activation pathways and summarizes the selective reaction of reactive species towards EDCs. Despite these advancements, several challenges persist in non-radical route-dominated persulfate activation, particularly regarding the impact of Fe-Fe distance on the reactive species and the catalytic role of Fe-based materials for reactions between inorganic ions and persulfate. This review proposes prospective research directions, provides design strategies, and expands the application of Fe-based materials in PS activation for effective EDC abatement in real situations. © 2025 Elsevier B.V.

关键词： chemical activation

来源：评论

学校读者我要写书评

暂无评论

Review of mayflies (Insecta Ephemeroptera) as a bioindicator of heavy metals and microplastics in freshwater

引用

Science of the Total Environment 2025年 958卷 178057页

作者： Benhadji, Nadhira Kurniawan, Setyo Budi Imron, Muhammad Fauzul Institute of Technology and Life Sciences—National Research Institute Falenty Hrabska Avenue 3 Raszyn05-090 Poland Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Selangor UKM Bangi43600 Malaysia Study Program of Environmental Engineering Department of Biology Faculty of Science and Technology Universitas Airlangga Campus C UNAIR Jalan Mulyorejo Surabaya60115 Indonesia Department of Water Management Faculty of Civil Engineering and Geosciences Delft University of Technology Stevinweg 1 CN Delft2628 Netherlands

Heavy metal and microplastic pollutions are prevalent in freshwater ecosystems, with many freshwater bodies being contaminated by one or both of these pollutants. Recent studies reported extreme detections of Cd, Pb and Zn, high concentrations of Cr, Pb and Cu and microplastics acting as vectors of pollutants, including heavy metals. Mayflies can serve as bioindicators of heavy metal contamination in freshwater ecosystems because changes in their community structure, physiology, and behaviour can reflect and help predict the concentrations of metals in these environments. This review discusses the ecological alterations induced by tissue metal concentration in mayflies and other macroinvertebrates. As sensitive taxa to heavy metal contamination, mayflies can reflect the impacts of this pollution through their ethology and relationship to the substrate, highlighting issues such as eutrophication, alterations in community structure, inhibitory effects and sediment toxicity. Mayflies are also highly affected by microplastic exposure, which leads to ingestion, bioaccumulation, biomagnification, habitat and community alteration, behavioural changes, physiology alteration and toxicity. Mayflies bioindication metrics for assessing the impact of heavy metals and microplastics include the examination of community alteration, functional feeding behaviour, molecular structure, dietary and toxicity impacts, bioaccumulation and biomagnification and biomarkers. Current challenges for the utilization of mayflies as bioindicators include temporal variations in sensitivity, lack of universally recognised protocols and need for standardised protocols for microplastic analysis. Additionally, the applicability of mayflies as bioindicators may vary across different ecosystems, emphasising the need for selecting suitable indicators that align with the unique characteristics of the ecosystem. © 2024 The Authors

关键词： Macroinvertebrates

来源：评论

学校读者我要写书评

暂无评论

ELASTOHYDRODYNAMICS OF BLADE COATING

引用

AICHE JOURNAL 1990年第4期36卷 587-597页

作者： PRANCKH, FR SCRIVEN, LE Coating Process Fundamentals Program Department of Chemical Engineering & Materials Science University of Minnesota Minneapolis MN 55455

Blade coating is the most common method of coating paper, and it is applied in coating magnetic suspensions and adhesives. Typically, the blade's upstream edge is clamped into a rigid holder so that the blade and substrate form a converging wedge. The translating substrate drags liquid into the wedge, where liquid forces develop and deflect the elastic blade, but it is loaded externally to counteract the deflection. Liquid dragged past the blade and thus the coating thickness depend on the elastohydrodynamic interaction among blade, liquid, and loading. Shell theory and lubrication flow theory describe the interaction by means of differential equations that are shown to be equivalent to Saita and Scriven's (1985) earlier formulation but that lead to a computationally more efficient analysis. Predictions computed agree with those of the earlier formulation and with experiments. Moreover, the new predictions illustrate effects of normal force loading and broaden the theory of blade coating.

关键词： Coating Techniques

来源：评论

学校读者我要写书评

暂无评论

Simultaneous extraction of crude polysaccharides, soluble proteins, gingerols, and shogaols from dried ginger by subcritical water extraction

引用

LWT 2025年 225卷

作者： Sakdasri, Winatta Kaomaneechot, Sunanta Lasim, Sarida Somboon, Pichayada Chotigavin, Natthaporn Wongpromrat, Patthranit Sawangkeaw, Ruengwit Program in Food Process Engineering School of Food Industry King Mongkut's Institute of Technology Ladkrabang 1 Chalong Krung 1 Alley Latkrabang Bangkok10520 Thailand Program in Fermentation Technology School of Food Industry King Mongkut's Institute of Technology Ladkrabang 1 Chalong Krung 1 Alley Latkrabang Bangkok10520 Thailand Program in Food Science and Technology School of Food Industry King Mongkut's Institute of Technology Ladkrabang 1 Chalong Krung 1 Alley Latkrabang Bangkok10520 Thailand Department of Chemical Engineering School of Engineering King Mongkut's Institute of Technology Ladkrabang 1 Chalong Krung 1 Alley Latkrabang Bangkok10520 Thailand Research Unit in Bioconversion/Bioseparation for Value-Added Chemical Production Institute of Biotechnology and Genetic Engineering Chulalongkorn University 254 Phayathai Road Pathumwan Bangkok10330 Thailand

Subcritical water extraction (SWE) is a remarkable method for the simultaneous extraction of high- and low-polarity bioactive compounds from ginger. This study investigated the effects of temperature, pressure, and extraction time on the crude polysaccharide yield, protein content, total phenolic content (TPC), and amounts of 6-gingerol and 6-shogaol. The pressure was maintained at 30 bars, and the temperature and extraction time were optimized to maximize the polysaccharide yield, protein, TPC, gingerols, and shogaols contents. The rising temperatures (100–160 °C) and extended extraction times (10–50 min) enhanced the yield and TPC but negatively affected protein stability, leading to thermal degradation when the temperature surpassed 180 °C. Specifically, the content of 6-gingerol decreased at high temperatures because of its conversion into 6-shogaol. The optimal extraction conditions were 160 °C for 40 min at 30 bars, resulting in a polysaccharide yield of 8.54 %, protein content of 100.35 mg body surface area/g dry mass, TPC of 18.10 mg Galic acid (GA)/g dry mass, 6-gingerol content of 2.14 mg/g dry mass, and 6-shogaol content of 0.28 mg/g dry mass. Therefore, SWE effectively extracts various polar bioactive compounds from plant materials in a single step. © 2025 The Authors

关键词： Ginger polysaccharides Soluble protein Gingerols Shogaol Subcritical water

来源：评论

学校读者我要写书评

暂无评论

Fabrication of graphene oxide decorated with poly(dimethyl amino ethyl methacrylate) brush for efficient Cr(Ⅵ) adsorption from aqueous solution

引用

Chinese Journal of chemical engineering 2024年第9期73卷 51-61页

作者： Alireza Nouri Siew Fen Chua Ebrahim Mahmoudi Abdul Wahab Mohammad Wei Lun Ang Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Centre for Sustainable Process Technology(CESPRO) Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangi 43600Malaysia Chemical and Water Desalination Engineering Program College of EngineeringUniversity of SharjahSharjah 27272United Arab Emirates

Confronting the severe health threats and environmental impacts of Cr(Ⅵ) in aquatic environments demands innovative and effective remediation approaches. In this study, Graphene oxide(GO)-decorated poly(dimethyl amino ethyl methacrylate)(PDMAEMA) brush nanocomposites(GOP1, GOP2, GOP3, and GOP4) were fabricated using atom transfer radical polymerization(ATRP) by the “graft from” *** resulting nanocomposites were utilized for removing Cr(Ⅵ) with good adsorption performance due to the electrostatic interaction of protonated nitrogen groups in the brush chains with negatively charged particles in the solution. The kinetic model of pseudo-second-order best represented the contaminants' adsorption characteristics. The Weber-Morris model further indicated that surface adsorption and intraparticle diffusion mechanisms primarily controlled the adsorption procedure. Additionally, the Langmuir and Temkin isotherm models were found to most accurately represent the adsorption characteristics of the pollutants on the nanocomposites, and GOP4 can achieve the maximum adsorption capacity of 164.4 mg·g^(-1). The adsorbents' capacity maintains above 85% after five cycles of adsorption-desorption. The nanocomposites in this study demonstrate promising potential for eliminating Cr(Ⅵ) from aqueous solutions.

关键词： Graphene oxide PDMAEMA brush Polymerization Nanoparticles Adsorption Chromium

来源：评论

学校读者我要写书评

暂无评论

Comparative study of mixing liquids and powders in a continuous medium using CFD

引用

Journal of engineering Science and Technology Review 2018年第5期11卷 134-138页

作者： Enamorado, Alberto Mario Fuentes Betancourt, Juan Bernardo Restrepo Obregon, Luis Guillermo Research Group in Process Simulation and Coal Transformation Chemical Engineering Program Universidad del Atlántico Barranquilla Colombia Research Group on Sustainable Chemical and Biochemical Processes Chemical Engineering Program Universidad del Atlántico Barranquilla Colombia

Prediction of flow and mixing of powders is a difficult challenge that has not been solved yet. Different numerical methods have been used to find the solution to the mathematical models proposed, but there are no experiments to compare and validate the results. The method with the best approximation is the discrete element method (DEM). However, this method requires a high computational power. In this article, it was made a comparison between the experimental results obtained when mixing two powders in an oscillatory low shear mixing device, and the 3D simulation of the same equipment using liquids with the help of a commercial software of computational fluids dynamics, CFD. Experiments at different wall velocities and wall displacements were run. Results reveal that the mixing in solids and liquids present lots of similarities when working at low velocity. This velocity lets solids to stay in frictional regime and liquids in the laminar regime. A zone of no mixing at the bottom of the mixing cavity is presented in liquids which is similar to the triangular pattern of no mixing found in solids. The height of the no mixing zone depends on the time of mixing, and the displacement and velocity of the walls. Under laminar regime conditions, the Navier Stokes equations can be applied to the powders because the velocity profiles obtained are similar. © 2018 Eastern Macedonia and Thrace Institute of Technology.

关键词： Shear stress

来源：评论

学校读者我要写书评

暂无评论

Enhanced carbon tetrachloride degradation by hydroxylamine in ferrous ion activated calcium peroxide in the presence of formic acid

引用

Frontiers of Environmental Science & engineering 2020年第2期14卷 75-85页

作者： Wenchao Jiang Ping Tang Zhen Liu Huan He Qian Sui Shuguang Lyu State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China Environmental Engineering and Science Program Department of Chemical and Environmental EngineeringUniversity of CincinnatiCincinnatiOH 45221-0071USA

Hydroxyl radicals(HO*)show low reactivity with perchlorinated hydrocarbons,such as carbon tetrachloride(CT),in conventional Fenton reactions,therefore,the generation of reductive radicals has attracted increasing *** study investigated the enhancement of CT degradation by the synergistic effects of hydroxylamine(HA)and formic acid(FA)(initial[CT]=0.13 mmol/L)in a Fe(il)activated calcium peroxide(CP)fenton *** degradation increased from 56.6%to 99.9%with the addition of 0.78 mmol/L HA to the CP/Fe(II)/FA/CT process in a molar ratio o f 12/6/12/*** results also showed that the presence of HA enhanced the regeneration of Fe(II)from Fe(III),and the production of HO*increased one-fold when employing benzoic acid as the HO****,FA slightly improves the production of HO*.A study of the mechanism confirmed that the carbon dioxide radical(C02·),a strong reductant generated by the reaction between FA and HO*,was the dominant radical responsible for CT *** complete CT dechlorination was achieved in the *** presence of humic acid and chloride ion slightly decreased CT removal,while high doses of bicarbonate and high pH inhibited CT *** study helps us to better understand the synergistic roles of FA and HA for HO·and C02·^-generation and the removal of perchlorinated hydrocarbons in modified Fenton systems.

关键词： Calcium peroxide Hydroxylamine Modified Fenton Reactive oxygen species Perchlorinated hydrocarbon

来源：评论

学校读者我要写书评

暂无评论

Improving energy efficiency in the forest products industry

引用

TAPPI JOURNAL 2004年第11期3卷 24-26页

作者： Fouche, E Banerjee, S EPRI"s Process Industries Program Centers for fiber apparel carpet and textiles pulp paper and forest products and chemical petroleum and natural gas IPST and at the School of Chemical & Biomolecular Engineering at Georgia Tech.

Electric utilities co-sponsor energy-related R&D initiatives in the pulp and paper and building products industry through the Electric Power Research Institute. Projects range from Pinch analyses that increase energy efficiency by mapping energy usage across a mill, to the development and demonstration of experimental technologies such as impulse drying. The projects undertaken are typically in the US$20-US$400K range, and the payback realized to date is many multiples of this investment. These energy savings are also usually accompanied by environmental benefits.

关键词： Energy efficiency

来源：评论

学校读者我要写书评

暂无评论

Stabilization of reaction-convective systems using inventory control

Stabilization of reaction-convective systems using inventory...

引用

2002 American Control Conference

作者： Ruszkowski, Martin G. Ydstie, B. Erik Process Systems Engineering Program Department of Chemical Engineering Carnegie Mellon University Pittsburgh PA 15213 United States

In this work, we develop an approach for the control of multi-phase and distributed chemical process systems by considering the physics of a process coupled with inventory control, passivity and thermodynamics. The incidence of these theories allows us to assess the stability of a general, distributed process system and stabilize performance around given fixed reference points. The theory we develop is applied to a simulated model of an electro-chemical process making Silicon, a pre-cursor material for electronics and silicones. Open and closed loop simulation are prepared and discussed.

关键词： process control

来源：评论

学校读者我要写书评

暂无评论

Enrichment of β-carotene in palm oil through deacidification using supercritical carbon dioxide

引用

Case Studies in chemical and Environmental engineering 2025年 11卷

作者： Machmudah, Siti Wahyudiono Gautama, Pramudya Riandana Bhayu Annisa, Devi Nur Rafsanjani, Rais Rahmat Watanabe, Masaru Adschiri, Tadafumi Goto, Motonobu Food Engineering Study Program Department of Chemical Engineering Institut Teknologi Sepuluh Nopember Kampus ITS Sukolilo Surabaya 60111 Indonesia Department of Chemical Engineering Institut Teknologi Sepuluh Nopember Kampus ITS Sukolilo Surabaya 60111 Indonesia of Engineering Tohoku University 6-6-10 Aoba Aramaki Aoba-ku Sendai 980-8579 Japan New Industry Creation Hatchery Center Tohoku University 6-6-10 Aoba Aramaki Aoba-ku Sendai 980-8579 Japan WPI – Advanced Institute for Materials Research Tohoku University 6-6-10 Aoba Aramaki Aoba-ku Sendai 980-8579 Japan Department of Materials Process Engineering Nagoya University Furo-cho Chikusa-ku Nagoya 464-8063 Japan Super Critical Technology Centre Co. Ltd. Mie Kuwana 511-0838 Japan

Supercritical carbon dioxide (SCCO2) is a suitable medium for separating phytochemical compounds from various materials. Here, it was employed for crude palm oil (CPO) deacidification to concentrate the β-carotene co... 详细信息

Supercritical carbon dioxide (SCCO₂) is a suitable medium for separating phytochemical compounds from various materials. Here, it was employed for crude palm oil (CPO) deacidification to concentrate the β-carotene component. In the semibatch process, SCCO₂ was introduced to CPO feed material at various operating temperatures (40−60 °C) and pressures (15−25 MPa) with a CO₂ flow rate of 3 mL min⁻¹ for 120 min. The results indicate that the extraction yield was significantly affected by varying the operating temperature and/or pressure, and the highest extraction yield was 4.59 % (40 °C, 25 MPa). Under the same operating conditions, the addition of an ethanol entrainer improved the extraction yield to 9.31 %. However, due to the β-carotene enrichment in the raffinate product, the presence of an ethanol solvent in this process introduced challenges. © 2025 The Authors

关键词： Crude palm oil Enrichment Fractionation Supercritical CO2 β-carotene

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：