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Critical Review on the Abatement Of Endocrine Disrupting Compounds In Iron-Based Materials Catalyzed Persulfate Systems: Reactive Species, Reaction Mechanisms, and Perspectives

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SSRN 2024年

作者： Sun, Ye Huang, Ying Zheng, Shujie Chen, Haojia 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 Department of Environmental Engineering INHA University Incheon22212 Korea Republic of Program in Environmental and Polymer Engineering Graduate School of INHA University Incheon22212 Korea Republic of

Persulfate-based advanced oxidation processes have emerged as promising technologies for mitigating endocrine-disrupting compounds (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. © 2024, The Authors. All rights reserved.

关键词： Endocrine disrupters

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Palygorskite and Solvatochromic Dye in Solid-State Colorimetric Devices for Rapid Assessment of the Amount of Water in Ethanol Fuel

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SSRN 2022年

作者： de Souza, Cristiane Gimenes dos Santos, Rafael Cavalcante Bertolino, Luiz Carlos de Andrade, Débora França Spinelli, Luciana d'Avila, Luiz Antonio Graduate Program in Nanotechnology Engineering COPPE Federal University of Rio de Janeiro Cidade Universitária Rio de JaneiroCEP 21941-909 Brazil Program in Chemical and Biochemical Process Engineering School of Chemistry Federal University of Rio de Janeiro Cidade Universitária Rio de JaneiroCEP 21941-909 Brazil Mineral Technology Center CETEM Cidade Universitária Rio de JaneiroCEP 21941-908 Brazil Institute of Chemistry Federal University of Rio de Janeiro Cidade Universitária Rio de JaneiroCEP 21941-908 Brazil

This study presents the results of a novel method developed for quantitative determination of water in ethanol fuel based on a colorimetric device composed of the solvatochromic dye methylene blue adsorbed on palygorskite, with filter paper as a support. The quantitative analysis was based on digital images taken of the prepared support, in which hydrous ethanol interacted with the colorimetric devices, giving different colors according to the level of water in the fuel. The digital images were acquired using a novel system consisting of a photo chamber and compartments for liquid or solid samples coupled to a smartphone. The digital images were processed by image processing software (ImageJ v.1.52n) installed on an external laptop, which enabled analyses using RGB and/or HSB. The method was partially validated and compared to the reference method ( Karl Fischer ASTM E203/16 ) for determining water in ethanol fuel. The proposed method showed good linearity, with coefficients of determination 0.9613, 0.9431, and 0.8835 for R, G, and S, respectively. The limits of detection of the channels R, G, and S were 0.329%, 0.306%, and 0.557% m/m, respectively;the limits of quantification for the same channels were 0.998%, 0.927%, and 1.688% m/m, respectively. The accuracy of the method (recovery) was between 98% and 110%. Precision, assessed by relative standard deviation, was 0.56%, 0.92%, and 2.05%, respectively, for R, G, and S. The paired t-test showed that there was no significant difference (with 95% confidence) between the proposed and reference methods. R was selected as the best channel for analyzing water in ethanol fuel as it had the best validation parameters. The proposed method, based on a novel colorimetric device, was found to be a good alternative to the reference method for the determination of water in ethanol fuel as it is quick, simple, effective, and could be used in the field for quality control. © 2022, The Authors. All rights reserved.

关键词： Ethanol

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Synergetic strategy: upgrading fuel properties of waste starch composite fuels by blending torrefied spent coffee grounds

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Journal of the Taiwan Institute of Chemical Engineers 2024年

作者： Chen, Wei-Hsin Chen, Guan-Hong Lee, Kuan-Ting Gunarathne, Duleeka Sandamali Hoang, Anh Tuan Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung407 Taiwan Department of Mechanical Engineering National Chin-Yi University of Technology Taichung411 Taiwan International Master's Degree Program on Energy Engineering National Cheng Kung University Tainan701 Taiwan Department of Chemical and Materials Engineering Tunghai University Taichung407 Taiwan Department of Chemical and Process Engineering University of Moratuwa Moratuwa10400 Sri Lanka Faculty of Engineering Dong Nai Technology University Bien Hoa City Viet Nam Graduate School of Energy and Environment Korea University 145 Anam-ro Seongbuk-gu Seoul02841 Korea Republic of

Background: This study presents a composite solid fuel upgrading strategy by blending torrefied spent coffee grounds (TS) into waste starch (WS) at the weight ratios of 0 wt%, 5 wt%, 20 wt%, and 35 wt%. When the blending ratio of TS exceeds 35 wt%, TS-WS composite fuel fails to pelletize. Blending TS in WS contributes to the higher heating value (HHV) and carbon content. Methods: The Taguchi method is utilized to identify the optimal torrefaction conditions for HHV of TS. The highest HHV of TS at 300°C (300-TSCG) is 31.76 MJ∙kg−1, which is about 2.08 times that of WS. The carbon content, HHV, ignition temperature, and combustion reactivity of 35%TS-WS composite fuel are 51.15 wt%, 21.06 MJ∙kg−1, 262°C, and 4.6 wt%∙min-1∙°C−1, respectively. Attenuated total reflectance spectrometer, contact angle, hygroscopicity, mildew observation, storability, and water activity of TS-WS composite fuel are analyzed, and the storability of TS-WS composite fuel is discussed. Significant findings: Compared with 0%TS-WS, the HHV of 35% TS-WS increases 38%, while the carbon content increases by 34%. The mechanical strength of TS-WS decreases with the increase of TS blending amount. The strategy of blending TS and WS can significantly reduce the generation of WS and spent coffee grounds (SCGs) and upgrade the quality of composite solid fuel. Accordingly, TS-WS is a promising composite solid fuel that can approach sustainable production of biofuels without compromising commercial viability. © 2024 Taiwan Institute of Chemical Engineers

关键词： Spent fuels

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Assessment of Decontamination and Reuse of Disposable Filter Funnels Used in Microbiological Water Quality Tests

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Environmental Health Insights 2021年第15期15卷 11786302211014400页

作者： Zimmer, Camille Cassivi, Alexandra Baía, Celia C Tilley, Elizabeth Bain, Robert Johnston, Richard Dorea, Caetano C Department of Civil Engineering University of Victoria Victoria BC Canada Environment and Regional Development Graduate Program (PGDRA) Universidade Federal de Rondônia (UNIR) Porto Velho Rondônia Brazil Department of Mechanical and Process Engineering ETH Zurich Zurich Switzerland The Polytechnic University of Malawi Chichiri Malawi Division of Data Analysis Planning and Monitoring UNICEF New York NY United States Department of Environment Climate Change and Health (ECH) WHO Geneva Switzerland

To monitor safely managed drinking water services, an increasing number of countries have integrated water quality testing for Escherichia coli into nationally-representative household surveys such as the Multiple Indicator Cluster Surveys (MICS). However, plastic waste generated during such water quality testing programs, mostly through the use of pre-sterilized disposable materials, is non-negligible. The objective of this study was to evaluate several re-use protocols for disposable filter funnels used by the MICS water quality test kits. Decontamination and re-use protocols were assessed in centralized laboratory and decentralized field settings and neither yielded positive results. Re-use of 100 mL sterile funnels decontaminated with an alcohol wipe resulted in a higher incidence of false positive results (i.e., positive contamination when processing sterile water), both in the laboratory and field;therefore, a higher proportion of positives tests can be expected if these components are re-used. Further improvements to the decontamination technique and training are needed before material re-use can be reliably adopted. Autoclaving the funnels for re-use is feasible, provided that there is capacity to re-package and distribute funnels in a sterile manner. © The Author(s) 2021.

关键词： Drinking water quality Escherichia coli microbial water testing multiple indicator cluster surveys (MICS) plastics waste

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Morphological arrangement of two-dimensional aggregated colloid

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AIP Conference Proceedings 2017年第1期1858卷

作者： Sarunya Promkotra Tawiwan Kangsadan 1Department of Geotechnology Faculty of Technology KhonKaen University KhonKaen 40002 Thailand 2Chemical and Process Engineering Program Department of Mechanical and Process Engineering TheSirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut’s University of Technology North Bangkok (KMUTNB) Bangsue Bangkok 10800 Thailand

Two-dimensional aggregate morphologies can be controlled by adjusting the suspending alcohol and the composition of the substrate solution. Water-glycerol substrates were used in these experiments because their high viscosity minimizes vibration in floating 2D aggregates. The polystyrene microspheres, 4.0 µm in diameter, were suspended in alcohol-water solutions at 0.1 vol% solid fraction by adding appropriate amounts of the as-received dispersion to the alcohol. The resulting suspending phase contained 12 vol% water. Methanol and ethanol were used as the suspension medium for the particles. The substrate composition and the suspending medium alcohol were varied, leading to a better understanding of the effect of these variables on 2Daggregate morphology. Light alcohols, methanol and ethanol, formed the two-dimensional(2D) aggregated monolayers at the air-liquid interface. Also, high acidity in the liquid substrate (pH values below 6) was required for formation of 2D aggregates. Similarly, salt additions also induced particle aggregation. The 2D morphologies were classified by their fractal dimension, which increased with the concentration of glycerol and acid in the substrateliquid. In addition, both aggregates and isolated particles in the ethanol system showed anovel circular ring structure, which disappeared over time. Morphology diagrams for the 2D aggregates were developed; these diagrams showed the fractal dimension of the clusteras a function of the formation conditions.

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AN APPLICATION OF TOTAL QUALITY MANAGEMENT AT AN INTERMEDIATE MAINTENANCE ACTIVITY

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NAVAL ENGINEERS JOURNAL 1990年第6期102卷 35-43页

作者： NEEDHAM, WD USN is currently assigned as the Pacific Submarine Force maintenance officer in Pearl Harbor Hawaii. He is a 1972 Magna Cum Laude graduate of Duke University with a BS in mechanical engineering a 1983 graduate of Central Michigan University with an MA in business management and a 1986 graduate of MIT with an MS in materials science and an OE in ocean engineering. Cdr. Needham was selected for the Nuclear Power Program and following initial qualification on the USSGrayling (SSN-646) served as production training assistant officer at S7G Prototype and as engineer officer of USSNathan Hale (SSBN-623). He transferred to the EDO community in 1981 and has served as nuclear repair officer at Norfolk Naval Shipyard and as repair officer of USSHunley (AS-31). His awards include the Meritorius Service Medal with gold star the Navy Commendation Medal the Navy Achievement Medal the Spear Foundation Award the Vice Admiral C. R. Bryan Award and the Award for Excellence in Corrosion Engineering of the Chemical Process Industries. He is a registered professional engineer in the state of Virginia.

The current budget and resource constrained fiscal environment mandates positive measures to improve productivity. The management practices of the last four decades are no longer valid. The Department of Defense (DoD) has issued broad guidelines for a restructuring of all subordinate commands and agencies called total quality management (TQM). The precepts of TQM are not new. They are the very same precepts prescribed by numerous management and quality control experts for the past decade to reverse the downward trends in the productivity of American industry. The program elements of TQM are broad in scope, as they must be for an organization as large and diverse as DoD. The implementation of TQM at the local command level is left to the local commander. This is no mean task, as TQM is a radical departure from traditional management practice in every aspect of an organization. This article reports on the implementation of TQM at a local command, the USS Hunley , a naval auxiliary support ship whose primary mission is the repair and maintenance of a squadron of nuclear-powered submarines in Norfolk, Virginia.

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Evaluation of phase envelope on natural gas, condensate and gas hydrate

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AIP Conference Proceedings 2015年第1期1653卷

作者： S. Promkotra T. Kangsadan 1Department of Geotechnology Faculty of Technology Khon Kaen University Khon Kaen 40002 Thailand 2Chemical and Process Engineering Program Department of Mechanical and Process Engineering The Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut’s University of Technology North Bangkok (KMUTNB) Bangsue Bangkok 10800 Thailand

The experimentally gas hydrate are generated by condensate and natural gas. Natural gas and condensate samples are collected from a gas processing plant where is situated in the northeastern part of Thailand. Physical properties of the API gravity and density of condensate are presented in the range of 55-60° and 0.71-0.76 g/cm3. The chemical compositions of petroleum-field water are analyzed to evaluate the genesis of gas hydrate by experimental procedure. The hydrochemical compositions of petroleum-field waters are mostly the Na-Cl facies. This condition can estimate how the hydrate forms. Phase envelope of condensate is found only one phase which is liquid phase. The liquid fraction is 100% at 15°C and 101.327 kPa, with the critical pressure and temperature of 2,326 kPa and 611.5 K. However, natural gas can be separated in three phases which are vapor, liquid and solid phase with the pressure and temperature at 100 kPa and 274.2 K. The hydrate curves explicit both hydrate zone and nonhydrate zone. Phase envelope of gas hydrate from the phase diagram indicates the hydrate formation. The experimental results of hydrate form can correlate to the hydrate curve. Besides, the important factor of hydrate formation depends on impurity in the petroleum system.

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Evaluation of differences in polyethersulfone membrane modification techniques using bio-additive dragon blood resin

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AIP Conference Proceedings 2024年第1期3082卷

作者： Aulia Chintia Ambarita Sri Mulyati Nasrul Arahman Muhammad Roil Bilad Doctoral Program School of Engineering Post Graduate Program Universitas Syiah Kuala Banda Aceh 23111 Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh 23111 Indonesia Department of Chemical and Process Engineering Faculty of Integrated Technologies Universiti Brunei Darussalam Jalan Tungku Link Gadong BE1401 Brunei

Membrane surface modification is one of the simplest ways to enhance the anti-fouling attribute of a polyethersulfone (PES)-based membrane. This paper compared two modification methods of PES membranes using dragon blood resin (DBR) additive via blending in the dope solution and coating a pristine PES membrane. The effect of modification methods was evaluated based on the properties and performances of the resulting membranes. Results show that the DBR-blended membrane exhibits higher water permease but lesser humic acid rejection than the DBR-coated membrane. Characteristics of contact angle, porosity, and pore size showed linear results on permease performance. The FTIR spectrum did not reveal any new groups but differed only on peak intensity. The DBR-coated membrane showed excellent anti-fouling properties as demonstrated by a flux recovery percentage of > 350%.

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Potential of Eggshell Waste Derived Calcium for Sustainable Production of Biogas from Cassava Wastewater

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SSRN 2022年

作者： Cruz, Ianny Andrade Andrade, Larissa Renata Santos de Jesus, Anderson Alles de Vasconcelos, Bruna Rego Bharagava, Ram Naresh Bilal, Muhammad Figueiredo, Renan Tavares de Souza, Ranyere Lucena Romanholo Ferreira, Luiz Fernando Graduate Program in Process Engineering Tiradentes University Av. Murilo Dantas 300 Farolândia SE Aracaju49032-490 Brazil Universidade Federal do Maranhão Campus Balsas MA Balsas65800-000 Brazil Biomass Technology Laboratory Department of Chemical Engineering and Biotechnology Engineering Université de Sherbrooke 2500 Boul. de L’Université SherbrookeQCJ1K 2R1 Canada Vidya Vihar Raebareli Road Uttar Pradesh Lucknow226 025 India School of Life Science and Food Engineering Huaiyin Institute of Technology Huaian223003 China Institute of Technology and Research Av. Murilo Dantas 300 Farolândia SE Aracaju49032-490 Brazil

Cassava is a staple crop that plays a significant role in the food security of many countries. However, its processing produces a liquid by-product known as cassava wastewater (CW), which can have adverse environmental consequences if discarded without treatment. Despite its cyanide content, CW has a high organic content and may be profitable when used to produce biogas. In this study, the influence of calcium particles from eggshell residues was investigated on the anaerobic digestion of CW. Moreover, the performance of the bioreactor was remotely monitored. Calcium particles from milled-calcined chicken eggshells were added to the bioreactor, and biogas production was investigated for 21 days. Adding 1 g/L and 3 g/L of calcium particles increased biogas (Bio H 2 + Bio CH 4 ) production by 195% and 338%, respectively. Finally, the requirement for digestate post-treatment before use in agriculture was observed after assessing its phytotoxicity through the germination and root growth of L. sativa seeds. © 2022, The Authors. All rights reserved.

关键词： Sustainable development

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Coordinated control and its implementation

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process Safety Progress 1982年第2期1卷 85-90页

作者： C. S. Lin T. H. Tsai J. W. Lane Tenneco Inc. Houston Texas 77001 Cheng S. Lin:was born in Taiwan and received a BS in Mechanical Engineering at Cheng Kung University. He came to the Rensselaer Polytechnic Institute in 1959 where he received a MME in Mechanical Engineering in 1962 and a PhD in Mechanical Engineering in 1966 He spent three years at West Virginia Pulp and Paper Co. in Process Control Research three years at TRW Inc. Systems Group on the Apollo program and nine years at Bonner and Moore Assoc. installing process control systems worldwide. He joined the Operations Technologies Department of Tenneco Inc. as a Consulting Engineer in June 1980. He is a US citizen and a member of IEEE. Thomas H. Tsai:is a Managing Engineer of the Operations Technologies Department of Tenneco Inc. He is a Registered Professional Engineer in the State of Calif. and is a Member of AIChE and a Senior Member of ISA. He received a BS degree in Chemical Engineering at Tunghan University of Taiwan and attended graduate school at Oklahoma State University. James W. Lane:received a BE and MS in Chemical Engineering from the University of Southern California. He is a Registered Professional Engineer in the States of Tex and Calif. and is a Member of the AIChE Senior Member of the IEEE and Senior Member of the SME. For the last seven years he has been Director of the Operations Technologies Department of Tenneco Inc. a cooperate engineering group providing expertise in advanced control technology for process control energy management and environmental monitoring systems.

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