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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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Energy Efficiency Project with Actions to Encourage the Rational and Sustainable Use of Electric Energy 19

Energy Efficiency Project with Actions to Encourage the Rati...

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19th IEEE International Conference on Environment and Electrical engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019

作者： Lemos, G.C. Faria, A.F. Viajante, G.P. Domingues, E.G. Domingos, J.L. Silva, S.B. Souto, O.C.N. Velloso, E.J.F. Franca, J.L. Graduate Program in Sustainable Process Technology IFG Goiânia-GO Brazil Graduate Program in Electrical and Computer Eng. UFG Goiânia-GO Brazil Graduate Program in Sustainable Process Technology IFG Itumbiara-GO Brazil Anima Projects Engineering Commerce Goiânia-GO Brazil

ISBN: (纸本)9781728106526

This work is the critical analysis of an Energy Efficiency Project (EEP) developed in an educational institution. The case-study is based on several fronts that synthesize the perspective of sustainability in a Solar Tree, an equipment to compose the landscape furniture with the capacity to generate electricity from a renewable source, symbolizing the project and acting as motivating agent in maintenance, and also contributing to the design of new actions with this bias. In the other fronts, the work includes the quantification of the level of energy efficiency of a building, besides promoting the retrofit of the lighting system and the installation of a photovoltaic generation system, all focusing on the rational use of electric energy, whose results show that the energy saved and the reduction in the peak of demand, as well as the installation of the photovoltaic plant, will bring the installation closer to the concept of energy selfsufficiency. © 2019 IEEE.

关键词： Sustainable development

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Renewable Biodiesel Production from Oleaginous Yeast Biomass Using Industrial Wastes

Renewable Biodiesel Production from Oleaginous Yeast Biomass...

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2019 Research, Invention, and Innovation Congress, RI2C 2019

作者： Kongruang, Sasithorn Roytrakul, Sittiruk Sriariyanun, Malinee Bioprocess Engineering and Biotechnology Center Department of Biotechnology Faculty of Applied Science King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Electrical and Computer Engineering Faculty of Engineering King Mongkut' S University of Technology North Bangkok Bangkok Thailand Chemical and Process Engineering Program Sirindhorn International Thai-German Graduate School of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand

The accumulation lipid from oleaginous microorganisms is recognized as a second generation fuel. Biooil is known to as intracellular product of oily yeast utilizing various carbon substrates and converting different quantities of lipids in the form of triacylglycerols. This second generation fuel can be used to make biodiesel via a transesterification process. This study investigated the morphological characteristics of eight strains of Thai oleaginous yeasts via microscopy and analyzed the fatty acid profiling of yeasts cultured in three carbon sources: glucose, sugar cane molasses and crude glycerol in order to estimate biodiesel properties. To approach this goal, batch fermentations were used to culture eight yeast strains, Rhodosporidium toruloides TISTR 5123, TISTR 5154, TISTR 5149, Yarrowia lipolytica TISTR 5054, TISTR 5151, TISTR 5621, Rhodotorula glutinis TISTR 5159 and Rhodotorula graminis TISTR 5124 for 96 h under 30°C at 250 rpm. Result revealed that eight yeast strains contained significant amounts of fatty acids and lipids and accumulated mainly palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C 18:1) and linoleic acid (C18:2), and they are suitable for the production of biodiesel. Fatty acid productions and profiles indicated that these yeast strains can be potentially used as the triacylglycerols producers for biodiesel production. © 2020 The Authors, published by EDP Sciences.

关键词： Lipids

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

SSRN

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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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Recent advancements in the targeted delivery of Gemcitabine: Harnessing nanomedicine for enhanced cancer therapy

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OpenNano 2023年 13卷

作者： Pourmadadi, Mehrab Aslani, Ali Hassan, Dilawar Sani, Ayesha Rahdar, Abbas I． Medina, Dora Abdouss, Majid Romanholo Ferreira, Luiz Fernando Department of Biotechnology School of Chemical Engineering College of Engineering University of Tehran Tehran Iran Department of Chemistry Amirkabir University of Technology Tehran Iran Tecnologico de Monterrey School of Engineering and Sciences Atizapan de Zaragoza Estado de Mexico 52926 Mexico Department of Physics Faculty of Sciences University of Zabol Zabol 538-98615 Iran Tecnologico de Monterrey Institute of Advanced Materials for Sustainable Manufacturing Nuevo Leon Monterrey 64849 Mexico Graduate Program in Process Engineering Tiradentes University (UNIT) Av. Murilo Dantas 300 Farolândia Aracaju-Sergipe 49032-490 Brazil Institute of Technology and Research (ITP) Tiradentes University (UNIT) Av. Murilo Dantas 300 Farolândia Aracaju-Sergipe 49032-490 Brazil

Gemcitabine (GEM) is a chemotherapeutic drug widely used for treating pancreatic cancer and other cancers. Despite its efficacy, GEM is associated with adverse side effects and tumor resistance, hampering its therapeutic outcomes. To address these challenges, innovative strategies have emerged to enhance GEM delivery. This comprehensive review explores various distribution systems, including polymer-based platforms, liposomes, and inorganic nanoparticles, highlighting their unique characteristics for improving GEM efficacy in cancer treatment. Additionally, we discuss the promising approach of codelivery with genes and present several methods for augmenting GEM's chemotherapeutic properties. Our findings shed light on novel insights and provide recommendations for overcoming the limitations associated with GEM, guiding researchers and clinicians toward more effective cancer therapies. © 2023 The Authors

关键词： Co-delivery Inorganic nanoparticles Lipid-based nanoparticles Polymeric nanoparticles

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Characterization and performances of hydrophobic polymer membrane modified with dragon’s blood resin

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AIP Conference Proceedings 2023年第1期2613卷

作者： Aulia Chintia Ambarita Sri Mulyati Nasrul Arahman Muhammad Roil Bilad 1Doctoral School of Engineering Science School of Engineering Post Graduate Program Universitas Syiah Kuala Banda Aceh 23111 Indonesia 2Department of Chemical Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh 23111 Indonesia 3Department of Chemical and Process Engineering Faculty of Integrated Technologies Universiti Brunei Darussalam Jalan Tungku Link-Gadong BE1401 Brunei

Hydrophobic membranes have limitations, which are the low permeation rate and susceptible to fouling, therefore membrane modifications are generally required. In this paper, hydrophobic polymer membrane modification has been studied by mixing dragon's blood resin (DBR) as bio additive. Two types of polymers were used, they were polyethersulfon (M-3 PES) and polyvinylidene Two types of polymers were used, they were polyethersulfon (M-3 PES) and polyvinylidene fluoride (M-3 PVDF) with a concentration of 14.5% polymer and 3% DBR. The results showed that M-3 PES had greater porosity, water uptake, pore size, and clean water flux than M3-PVDF. However, the antifouling performance of M-3 PVDF membrane tends to be better than M-3 PES, as well as its rejection. Both membranes tend to be stable even after repeated use.

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

SSRN

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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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Systematic design of separation process for bioethanol production from corn stover

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BMC Chemical engineering 2020年第1期2卷 1-16页

作者： Amornraksa, Suksun Subsaipin, Ittipat Simasatitkul, Lida Assabumrungrat, Suttichai Chemical and Process Engineering Program The Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut’s University of Technology North Bangkok Bangkok Thailand Department of Industrial Chemistry Faculty of Applied Science King Mongkut’s University of Technology North Bangkok Bangkok Thailand Center of Excellence in Catalysis and Catalytic Reaction Engineering Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok Thailand

Separation process is very crucial in bioethanol production as it consumes the highest energy in the process. Unlike other works, this research systematically designed a suitable separation process for bioethanol production from corn stover by using thermodynamic insight. Two separation processes, i.e., extractive distillation (case 2) and pervaporation (case 3), were developed and compared with conventional molecular sieve (case 1). process design and simulation were done by using Aspen Plus program. The process evaluation was done not only in terms of energy consumption and process economics but also in terms of environmental impacts. It was revealed that pervaporation is the best process in all aspects. Its energy consumption and carbon footprint are 60.8 and 68.34% lower than case 1, respectively. Its capital and production costs are also the lowest, 37.0 and 9.88% lower than case 1.

关键词： Bioethanol Corn stover process design Economic analysis Life cycle analysis

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Current advances in the brewery wastewater treatment from anaerobic digestion for biogas production: A systematic review

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Environmental Advances 2023年 13卷

作者： Maria, Mariana Pires Torres, Nádia Hortense Nascimento, Victor Ruan Silva Chagas, Talita Santos Alves Saratale, Ganesh Dattatraya Mulla, Sikandar I. Bharagava, Ram Naresh Cavalcanti, Eliane Bezerra Romanholo Ferreira, Luiz Fernando Graduate Program in Process Engineering Tiradentes University Av. Murilo Dantas 300 Farolândia SE Aracaju 49032-490 Brazil Institute of Technology and Research Av. Murilo Dantas 300 Farolândia SE Aracaju 49032-490 Brazil Department of Food Science and Biotechnology Dongguk University Ilsandong-gu Goyang-si Gyeonggi-do Seoul 10326 South Korea Department of Biochemistry School of Allied Health Sciences REVA University Bangalore India Laboratory of Bioremediation and Metagenomics Research (LBMR) Department of Environmental Microbiology (DEM) Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar Raebareli Road U.P. Lucknow 226 025 India

Brazil is the third largest beer producer in the world and has several brewing industries. These industries cover a range of production processes due to their wide variety of beverages, which leads to the generation of effluents with different physicochemical characteristics. Furthermore, these residues are usually disposed of without any treatment despite having enormous potential for biogas and bioenergy production. Biorefinery is a relevant alternative to the transition from a linear economy to a Circular Economy (CE). The Biorefinery exploits all available resources in the production of goods and contributes to sustainable development in the face of industrial production. In this context, as an alternative solution, anaerobic digestion (AD) has been commonly used as it uses different biomass sources to satisfy current energy demands. AD can be implemented to treat brewing effluent, promote its energy recovery, reduce environmental pollution, and produce environmentally friendly biological products: biogas and biofertilizer. Thus, this review explored the potential of AD for brewery waste management in association with the bio-based CE. Overall, the current manuscript emphasized the potential of brewery waste for biogas generation and energy production, discussing its adoption and challenges. © 2023

关键词： Anaerobic digestion Bioenergy Biogas Brewery wastewater

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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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