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Synthesis of a Novel Functionalized Biosorbent from Mango Stone and its Application in the Pharmaceutical's Removal from Water and a Synthetic Mixture

SSRN

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SSRN 2023年

作者： Ribeiro, Anna Carla Januário, Eduarda Freitas Diogo Vidovix, Taynara Basso de Almeida Duarte, Elizabeth da Costa Neves Fernandes Vieira, Angélica Marquetotti Salcedo Bergamasco, Rosângela State University of Maringá Department of Biotechnology Genetics and Cell Biology Paraná Maringá Brazil State University of Maringá Department of Chemical Engineering Paraná Maringá87020-900 Brazil Linking Landscape Environment Agriculture and Food School of Agriculture University of Lisbon Lisbon Portugal State University of Maringá Graduate program in Food Science Paraná Maringá87020-900 Brazil

As the shift towards renewable use of biosorbents of organic origin for water treatment, new approaches for recovery fruits biowastes must be established to a more sustainable waste management strategy. This paper explores the feasibility of functionalize mango stones with iron oxide MNP (MS-Fe3O4) by coprecipitation in batch adsorption processes. The synthesized material was characterized and, sequentially, used in the removal of CQN and SER, present in contaminated waters. The biosorbent was submitted to a regenerative study and treatment using a synthetic mixture of contaminants to evaluate its applicability in real effluents. The surface morphology of the functionalized biosorbent was observed through transmission electron microscopy images (TEM) and scanning electron microscopy (SEM). The chemical elements spectrum shown on material’s surface was analyzed by a dispersion X-ray spectroscopy system (EDX). Functional groups were determined by the infrared spectrum with Fourier transform (FTIR). The surface electrical properties of the material were measured by zeta potential (ZP). The study of the isotherms, in turn, revealed maximum adsorptive capacities of 53.40 and 79.10 mg g-1, respectively for CQN and SER, at 318 K, demonstrating that the increase in temperature is a favorable factor and the Langmuir model better describes the process. The pH strongly influenced the adsorption of drugs on MS-Fe3O4, and the best results were obtained in the range of pH 5 to 6. According to the thermodynamic process’s profile, it is inferred that the reaction is governed essentially by adsorption forces mainly, hydrogen and, π-π bonds, but it is also valid to consider the performance of electrostatic forces in a less significant way, due to CQN and SER molecules ionizing nature. The MS-Fe3O4 biosorbent showed good performance when evaluated in a synthetic mixture of four contaminants, with a global removal efficiency of approximately 86% and the regenerative capacity of three r

关键词： Adsorption

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Nitrogen-Doped Graphene Foam as a Metal-Free Catalyst for Reduction Reactions under a High Gravity Field

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engineering 2020年第6期6卷 680-687页

作者： Zhiyong Wang Zhijian Zhao Jesse Baucom Dan Wang Liming Dai Jian-Feng Chen State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Department of Chemical and Biomolecular Engineering University of CaliforniaLos AngelesCA 90095USA Center of Advanced Science and Engineering for Carbon(Case4Carbon) Department of Macromolecular Science and EngineeringCase School of EngineeringCase Western Reserve UniversityClevelandOH 44106USA Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China

Herein,we report on the effect of a high gravity field on metal-free catalytic reduction,taking the nitrobenzene(NB)reduction and methylene blue(MB)degradation as model reactions in a highgravity rotating tube reactor packed with three-dimensional(3D)nitrogen-doped graphene foam(NGF)as a metal-free *** apparent rate constant(kapp)of the metal-free catalytic reduction of NB in the rotating tube reactor under a high gravity level of 6484g(g=9.81 m s-2)was six times greater than that in a conventional stirred reactor(STR)under *** fluid dynamics(CFD)simulations indicated that the improvement of the catalytic efficiency was attributed to the much higher turbulent kinetic energy and faster surface renewal rate in the high-gravity tube reactor in comparison w让h those in a conventional *** structure of the 3D metal-free catalysts was stable during the reaction process under a high gravity field,as confirmed by X-ray photoelectron spectroscopy(XPS)and Raman *** the other model reaction,the rate of MB degradation also increased as the high gravity level in creased gradually,which aligns with the result for the NB catalytic reduction *** results demonstrate the potential to use a high-gravity rotating packed tube reactor for the process intensification of metal-free catalytic reduction reactions.

关键词： High-gravity technology Process intensification Metal-free catalysts Carbon nanomateriais Catalytic reduction

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Role of the Ionomer in Supporting Electrolyte-Fed Anion Exchange Membrane Water Electrolyzers

ACS electrochemistry

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ACS electrochemistry 2025年第2期1卷 239-248页

作者： Emily K Volk Arielle L Clauser Melissa E Kreider Diego D Soetrisno Sunilkumar Khandavalli Joshua D Sugar Stephanie Kwon Shaun M Alia Advanced Energy Systems Graduate Program Colorado School of Mines Golden Colorado 80401 United States. Sandia National Laboratories Livermore California 94550 United States. Chemistry and Nanoscience Center National Renewable Energy Laboratory Golden Colorado 80401 United States. Materials Science Center National Renewable Energy Laboratory Golden Colorado 80401 United States. Department of Chemical and Biological Engineering Colorado School of Mines Golden Colorado 80401 United States.

While anion exchange membrane water electrolyzers (AEMWEs) have achieved significant performance advances in recent decades, overpotentials remain high relative to their proton exchange membrane water electrolyzer (PEMWE) counterparts, requiring AEMWE-specific catalyst layer design strategies to further advance this technology. In this work, the role of the ionomer in catalyst layer structure and quality, catalyst layer stability, and ion conduction for supporting electrolyte-fed AEMWEs is assessed for catalyst layers composed of NiFeO and PiperION TP85 from Versogen at variable ionomer contents (0-30 wt %) for tests up to 200 h. The results reveal that, for supporting electrolyte-fed AEM devices, the ionomer is not required for ion conduction through the catalyst layer. Instead, the ionomer is found to play a critical role in catalyst layer structure and stability, where intermediate ionomer contents lead to the lowest overpotentials, highest effective surface areas, and lowest catalyst layer resistances. Catalyst layer stability is found to be a function of both catalyst adhesion and ionomer loss. These results show that an ionomer may be selected which is not of the same chemistry as the anion exchange membrane, mitigating ionomer stability concerns throughout the catalyst layer and offering a pathway towards highly active and stable AEMWEs.

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Comparative Assessment of Phenolic Composition Profile and Biological Activities of Green Extract and Conventional Extracts of Salvia Sclarea

SSRN

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SSRN 2023年

作者： Qurada, Mohammed Mansour Duru, Mehmet Emin Kucukaydin, Selcuk Tamfu Ngengue, Alfred Ngenge Iqbal, Mudassar Bibi, Hamida Khan, Rasool Ceylan, Ozgur College of Education Seiyun University Seiyun Yemen Department of Chemistry Faculty of Science Mugla Sitki Kocman University Mugla48000 Turkey Department of Medical Services and Techniques Koycegiz Vocational School of Health Services Mugla Sıtkı Kocman University Mugla Koycegiz48000 Turkey Department of Chemical Engineering School of Chemical Engineering and Mineral Industries University of Ngaoundere 454 Ngaoundere Cameroon Department of Agricultural Chemistry and Biochemistry The University of Agriculture Peshawar25000 Pakistan Department of Environmental Sciences Abdul Wali Khan University Mardan Pakistan Institute of Chemical Sciences University of Peshawar Peshawar25120 Pakistan Food Quality Control and Analysis Program Ula Ali Kocman Vocational School Mugla Sitki Kocman University Mugla Ula48147 Turkey Pharmacy Department Medical Sciences Aljanad University for Science and Technology Taiz Yemen

In recent years, green solvents have been developed and suggested to be an alternative to conventional solvents. In a current study, the green solvent was prepared at various molar proportions to extract of S. sclarea. Similarly methanolic and ultrasonic extracts the S. sclarea were prepared and subjected to study HPLC profiling antibacterial, antioxidant and enzyme inhibition activities. The phenolic composition identified by HPLC-DAD showed rosmarinic acid as the main content in all extracts, while ellagic acid was found only in the green extract. The green extract had better anti- biofilm activity in comparison to the methanolic and ultrasonic extracts agains S. aureus and E. faecalis at MIC concentration. Among the tested extracts, the ultrasonic extract showed strong inhibition of violacein production by C. violaceum with a inhibition range 05.5±0.1(MIC/32) to100±0.00(MIC), followed by green extract with a inhibition range 15.0±0.5(MIC/8) to 100±0.00(MIC). The green extract had the highest inhibition of swarming motility P. aeruginosa with inhibition 68.0±2.1(MIC) to 19.5±0.6(MIC/4). The green extract also exhibited better enzyme inhibitory activity against BChE with IC50=131.6±0.98µg/mL and against AChE with inhibition 47.00±1.50% better than methanolic and ultrasonic extracts. In contrast ultrasonic and methanoic extracts showed significant activity against urease enzyme with (IC50=171.6±0.95µg/mL and IC50=187.5±1.32µg/mL) respectively. Both green and methanolic extracts showed considerable antioxidant activities as β-carotene-linoleic acid(IC50=5.61±0.47µg/mL and 5.37±0.27µg/mL), DPPH• (IC50=19.20±0.70 µg/mL and 16.31±0.23µg/mL), ABTS•+(IC50=8.64±0.63µg/mL and 6.50±0.45µg/mL) and CUPRAC (A0.5=17.22±0.36 µg/mL and 12.28±0.12 µg/mL) respectively. However, the green extract showed activity better than methanolic and ultrasonic extract in metal chelating. © 2023, The Authors. All rights reserved.

关键词： Antioxidants

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Mechanochemistry of an Interlocked Polycatenane:From Single Molecule to Bulk Gel

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CCS Chemistry 2020年第1期2卷 513-523页

作者： Hao Xing Zhandong Li Wenbo Wang Peiren Liu Junkai Liu Yu Song Zi Liang Wu Wenke Zhang Feihe Huang State Key Laboratory of Chemical Engineering Department of ChemistryCenter for Chemistry of High-Performance&Novel MaterialsZhejiang UniversityHangzhou 310027(China) State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012(China) Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027(China) Department of Chemistry The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionInstitute for Advanced StudyDepartment of Chemical and Biological Engineering and Division of Life ScienceThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong(China)

Mechanically interlocked molecules(MIMs)are prototypical molecular machines with parts that enable controlled,large-amplitude movement with one component positioned relative to *** MIMs into polymeric matrices is promising for the designing of functional materials with unprecedented ***,the central issue is the challenges involved with establishing the mechanistic linkage between the single-molecule and the bulk ***,we explore the mechanochemical properties and energetic details of a linear poly[2]catenane with strong intercomponent hydrogen bonding(IHB)revealed by single-molecule force *** results showed that the individual linear poly[2]catenane chain exhibited typical sawtooth pattern,corresponding to the reversible unlocking and relocking transitions under external force or upon stimulations to dissociate or re-form the strong ***,when a poly[2]catenane-based polymer gel was prepared using a thiol-ene click reaction between thiol-ended poly[2]catenane and a low-molecule-weight cross-linker,the resultant gel showed excellent mechanical adaptability and dynamic properties,which correlated well with the molecular-level *** unique poly[2]catenane structure also contributed to the gel formation with an extraordinary IHB-mediated swelling behavior and shape memory *** our present results demonstrate the functioning of bulk material in a linear tandem manner from the behavior of a single molecule,a finding which should be applicable to other systems with versatile properties and promising applications.

关键词： polycatenane supramolecular polymer mechanochemistry single-molecule force spectroscopy

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The biological treatment method for landfill leachate 5

The biological treatment method for landfill leachate

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5th International Conference on Energy, Environmental and Information System, ICENIS 2020

作者： Ilhami Firiyal Imtinan, Siti Purwanto, P. Yulianto, Bambang Master Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Department of Marine Sciences Faculty of Fisheries and Marine Sciences Diponegoro University Semarang Indonesia

Currently, waste generation in Indonesia is increasing;the amount of waste generated in a year is around 67.8 million tons. Increasing the amount of waste generation can cause other problems, namely water from the decay of waste called leachate. Leachate can contaminate surface water, groundwater, or soil if it is streamed directly into the environment without treatment. Between physical and chemical, biological methods, and leachate transfer, the most effective treatment is the biological method. The purpose of this article is to understand the biological method for leachate treatment in landfills. It can be concluded that each method has different treatment results because it depends on the leachate characteristics and the treatment method. These biological methods used to treat leachate, even with various leachate characteristics, also can be combined to produce effluent from leachate treatment below the established standards. © The Authors, published by EDP sciences, 2020.

关键词： Leachate treatment

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Novel Biosynthesis of Spherical Tungsten Trioxide Nanoparticles for Sustainable Photocatalytic Application

SSRN

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SSRN 2024年

作者： Parveen, Nazish Alnahdi, Kholoud M. Alsharif, Shada A. Ansari, Sajid Ali Ansari, Mohd Zahid Alam, Mir Waqas Umar, Ahmad Department of Chemistry College of Science King Faisal University P.O. Box 380 Hofuf Al-Ahsa31982 Saudi Arabia Department of Physics Faculty of Science University of Tabuk Tabuk71491 Saudi Arabia University College of Umlij University of Tabuk Tabuk Saudi Arabia Department of Physics College of Science King Faisal University P.O. Box 400 Hofuf Al-Ahsa31982 Saudi Arabia Chemical Engineering Program Texas A&M University System at Qatar P.O. Box 23874 Doha Qatar Najran University Najran11001 Saudi Arabia STEM Pioneers Training Lab Najran University Najran11001 Saudi Arabia Department of Materials Science and Engineering The Ohio State University ColumbusOH43210 United States

Abstract Spherical-shaped tungsten trioxide (SS-TTO) nanoparticles, notable for their high photocatalytic activity and noble metal-free composition, were developed using an innovative and eco-friendly biosynthesis method. This approach leverages orange juice as a cost-effective and abundant resource, diverging from traditional methods that often rely on costly chemicals. The newly synthesized SS-TTO nanoparticles underwent thorough examination through established spectroscopic and microscopic methods, demonstrating significantly improved photocatalytic performance under UV light exposure. These properties suggest that SS-TTO nanoparticles are a promising and sustainable option for various photocatalytic applications. © 2024, The Authors. All rights reserved.

关键词： Tungsten compounds

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Cellulose processing using ionic liquids: An analysis of patents and technological trends

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Heliyon 2024年第20期10卷 e39590页

作者： Vieira, Suellen Rocha Silva, Jania Betânia Alves da Pessôa, Luiggi Cavalcanti Nascimento, Renata Quartieri Galván, Karina Lizzeth Pedraza Souza, Carolina Oliveira de Cardoso, Lucas Guimarães Santana, Jamille Santos Assis, Denilson de Jesus Graduate Program in Chemical Engineering (PPEQ) Polytechnic School Federal University of Bahia (UFBA) Bahia Salvador 40210-630 Brazil Center for Exact and Technological Sciences Collegiate of Mechanical Engineering Federal University of Recôncavo of Bahia (UFRB) Bahia Cruz das Almas 44380-000 Brazil Graduate Program in Biotechnology-Northeast Biotechnology Network (RENORBIO) Federal University of Bahia (UFBA) Bahia Salvador 40231-300 Brazil Graduate Program in Food Science (PGAli)–College of Pharmacy Federal University of Bahia (UFBA) Bahia Salvador 40110-100 Brazil Department of Bromatological Analysis College of Pharmacy Federal University of Bahia (UFBA) Bahia Salvador 40110-100 Brazil Department of Engineering University Salvador (UNIFACS) Bahia Salvador 41820-021 Brazil

The production of cellulose derivatives using ionic liquid (IL) as solvents and catalysts has become prominent over the last few years, since the process eliminates the use of toxic substances. This study aimed to map and understand the trends in cellulose processing using ILs by a patent analytic approach and technology life cycle modeling. The documents were searched on the Espacenet® and Orbit® *** majority of innovations have come from companies based in developed countries. The data fitted to the sigmoid BiDoseResp model and the life cycle S-curve showed a market in an early stage of maturity. This mapping brings information that subsidizes decision-making regarding investments, research, and innovations aimed at IL-mediated cellulose treatment. Potential markets mostly use ILs of the imidazolium family in polymer chemistry, machinery, and biotechnology technologies. However, medical and pharmaceutical technologies and microstructure and nanostructure applications are still emerging, fostering perspectives for innovation. © 2024

关键词： Cellulose Dissolution Ionic liquids Mathematical model Patents

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An Environmental Study on the Paid Plastic Bag Use Policy in the city of Semarang 5

An Environmental Study on the Paid Plastic Bag Use Policy in...

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5th International Conference on Energy, Environmental and Information System, ICENIS 2020

作者： Muslihun, Muhammad Dwi Anggroro, Didi Kismartini, Kismartini Master Program of Environmental Studies School of Postgraduate Studies Diponegoro University Semarang Indonesia Chemical Engineering Department Faculty of Engineering Diponegoro University Semarang Indonesia Public Administration Department Faculty of Social and Political Science Diponegoro University Semarang Indonesia

Indonesia is the second largest contributor of plastic waste in the ocean. The initiative of the central government through KLHK in reducing the generation of plastic waste is to launch a paid plastic bag policy. This policy is regulated by a circular issued by KLHK to local governments and business actors. The purpose of this study is to analyse the implementation of policies, analyse consumer behaviour and analyse the supporting and inhibiting factors in the paid plastic bag policy which is applied in the city of Semarang. The approach used in this study is a qualitative approach. Data collection uses primary and secondary data. The results showed that the paid plastic bag policy had the support of the local government, businesses and consumers. Various efforts have been made as a form of support to reduce waste generation in accordance with the objectives of this policy. Although consumers know and support this policy, it does not change consumer behaviour much. They still use plastic bags from retail when they finish shopping. Consumers have no objections to paying IDR 200. This policy does not bring many significant changes in consumer behaviour in using new plastic bags, despite the tendency of consumers to know the impact of plastic bag waste if it is not managed properly. Consumers still seem indifferent in considering plastic bag waste as an urgent waste priority. So that this policy is still less effective in changing consumer behaviour. © The Authors, published by EDP sciences, 2020.

关键词： Consumer behavior

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A damage-perceptive, self-healing electronic skin with millimeter resolution

Device

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Device 2025年

作者： Root, Samuel E. Wu, Can Choi, Hojung Sun, Eric Ngaruka, Gradie Park, Hyunchang Ramos Figueroa, Alexandra L. Berman, Arielle Patino, Diego Uruchurtu Shi, Yuran Pugh, Carla Bao, Zhenan Department of Chemical Engineering Stanford University Stanford 94305 CA United States Department of Mechanical Engineering Stanford University Stanford 94305 CA United States Department of General Surgery School of Medicine Stanford University Stanford 94305 CA United States Department of Macromolecular Science & Engineering Case Western Reserve University Cleveland 44106 OH United States

In living tissue, pain provides a localized alert to damage and elicits an adaptive response, including the ability to heal. Mimicking these abilities in soft robotics is a key challenge. Here, we design a self-healing, multilayer electronic skin capable of sensing three-dimensional damage inflicted by scalpels and needles at ∼1-mm resolution. In our design, unidirectional, linear voltage gradients are applied across resistive “drive” layers. Analog “sense” layers detect lateral position and depth of metallic objects by sensing voltage upon electrical contact between layers. The multilayer sensing principle is validated through experiments with device designs of increasing functionality—including with one-, two-, and three-dimensional damage sensing—with synchronized measurements made using an underlying precision six-axis force sensor. The ability to detect punctures and incisions in soft, self-healable materials at millimeter resolution may enable the development of reusable, sensory surgical simulation technology for training medical personnel and evaluating efficacy of surgical robots. © 2025 The Authors

关键词： damage intelligence damage sensing DTI-2: Explore dynamic polymers electronic skins functional composites self-healing devices soft robotics surgical simulation

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