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Improved dark ambient degradation of organic pollutants by cerium strontium cobalt perovskite

Journal of Environmental Sciences 2020年第4期32卷 110-118页

作者： Huihuang Chen Julius Motuzas Wayde Martens Joao C.Diniz da Costa The University of Queensland FIM^2 Lab-Functional Interfacial Materials and Membranes LaboratorySchool of Chemical EngineeringBrisbaneQld 4072Australia Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaAnhui 230026China Science and Engineering Faculty Queensland University of TechnologyBrisbaneQld 4000Australia LAQV-REQUIMTE (Bio)Chemical Process EngineeringDepartment of ChemistryFaculty of Science and TechnologyUniversidade NOVA de LisboaCaparica 2829-516Portugal

This work investigates the effect of cerium substation into strontium cobalt perovskites(CeSrCoO)for the oxidative degradation of OrangeⅡ(OII)in dark ambient conditions without the aid of any external stimulants such as light,heating or chemical *** OII degradation rate by CeSrCoO reached 65%in the first hour,whilst for the blank sample without cerium(SrCoO)took over 2 hr to reach the same level of OII ***,the cerium substitution improved the catalytic activity of the perovskite material,mainly associated with the Ce0.1Sr0.9CoO3 perovskite *** contacting CeSrCoO,the-N=Nazo bonds of the OII molecules broke down resulting in electron donation and the formation of *** electrons are injected into the CeSrCoO and resulted in a redox pair of Co3+/Co2+,establishing a bridge for the electron transfer between OII and the ***,the electrons also formed reactive species(·OH)responsible for OII degradation as evidenced by radical trapping *** species were formed via the reaction between 02 and donated electrons from OII with the aid of cobalt redox *** the prepared materials dispensed with the need for light irradiation and additional oxidants,it opens a window of environmental applications for treating contaminated wastewaters.

关键词： Dark catalysis Acid orange degradation Cerium substituted perovskite Catalytic activity

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Editorial: Proceedings of ABBS-international conference on biohydrogen and bioprocesses 2022 (ABBS 2022)

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Frontiers in Bioengineering and Biotechnology 2024年 12卷 1390377页

作者： Xia, Ao Herrmann, Christiane Reungsang, Alissara Show, Pau-Loke Trably, Eric Wu, Junjun Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University Ministry of Education Chongqing China Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University Chongqing China Potsdam Germany Research Group for Development of Microbial Hydrogen Production Process from Biomass Department of Biotechnology Faculty of Technology Khon Kaen University Khon Kaen Thailand Department of Chemical Engineering Khalifa University Abu Dhabi United Arab Emirates Department of Chemical and Environment Engineering Faculty of Science and Engineering University of Nottingham Malaysia Semenyih Malaysia INRAE Université de Montpellier LBE Narbonne France

A massive amount of solid wastes (such as straws, manures, plastic and food wastes), liquid wastes (such as municipal and agricultural wastewaters), and gaseous wastes (such as flue gases rich in carbon dioxide) are generated from industrial, residential, transportation and agricultural sectors (Siegelman et al., 2021;Vyas et al., 2022;You et al., 2022). These wastes would cause significant adverse environmental impacts if they are not properly treated. Turning wastes into biofuels and bioproducts can make a substantial contribution to the clean energy supply and environmental protection (Bhatia et al., 2018;Peng et al., 2023;Wang et al., 2023). However, competitive and sustainable circular economy solutions via scientific and technological innovation are urgently needed to improve the conversion rates and efficiencies of such *** research topic includes four original research papers, which could provide various solutions to upgrade the solid, liquid, and gaseous wastes to value-added *** digestion is a mature technology and has been developed for over a hundred years. However, anaerobic mono-digestion suffers from drawbacks such as low biogas/biomethane yield, digester instability and limited year-round availability of specific feedstocks (Karki et al., 2021). A study by Kriswantoro et al. investigated the performance of anaerobic co-digestion of untreated Napier grass and food waste hydrolyzed with subcritical water. An optimal biomethane yield of 614.37 mL/g VS was obtained at a 1:1 ratio (VS basis) of Napier grass and food waste during two-stage anaerobic digestion that sequentially produced biohydrogen and biomethane. The methane concentration in the biogas was higher than 65% on day 20 and maintained in the range of 65%-80% until the end of anaerobic digestion. Liquid digestate derived from anaerobic digestion contains high levels of nitrogen and phosphorus pollutants, which may require an energy-intensive and high-cost post-treatment

关键词： biofuels waste treatment fermentation mass transfer circular economy

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Impact of various electromagnetic fields on the transdermal permeability of naproxen and the effect of active compound exposure on magnetic field properties

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European Journal of Pharmaceutics and Biopharmaceutics 2025年 212卷 114715页

作者： Rakoczy, Rafał Zyburtowicz-Ćwiartka, Karolina Konopacki, Maciej Nowak, Anna Piotrowska, Kararzyna Muzykiewicz-Szymańska, Anna Kucharski, Łukasz Kordas, Marian Ossowicz-Rupniewska, Paula West Pomeranian University of Technology in Szczecin Faculty of Chemical Technology and Engineering Department of Chemical and Process Engineering Piastów Ave. 42 Szczecin 71-065 Poland Pomeranian Medical University in Szczecin Department of Cosmetic and Pharmaceutical Chemistry Powstanców Wielkopolskich Ave. 72 Szczecin 70-111 Poland West Pomeranian University of Technology in Szczecin Faculty of Chemical Technology and Engineering Department of Organic Chemical Technology and Polymer Materials Piastów Ave. 42 Szczecin 71-065 Poland Pomeranian Medical University in Szczecin DepartPomeranian Medical University in Szczecin Department of Physiology Powstancow Wielkopolskich Ave. 72 70-111 Szczecin Poland

Transdermal drug delivery systems present a promising alternative to oral administration, though improving skin permeability of active pharmaceutical ingredients (APIs) remains challenging. This study examines how various electromagnetic fields (EMFs) affect the transdermal permeability of naproxen (NAP) and its physicochemical properties. Using pigskin as a model, NAP permeability was tested under oscillating, pulsed, static, and rotating magnetic fields (RMF), compared to a control group without EMF exposure. The results show significant differences in NAP permeability depending on EMF type, with RMF at 50 Hz yielding the highest cumulative permeation mass (CPM) of 1461.40 ± 256.15 µg/cm², compared to 267.57 ± 41.74 µg/cm² for the control. RMF 50 Hz also maximized steady-state flux (J_SS) and permeability coefficient (K_P), highlighting its potential for enhanced transdermal delivery. Conversely, static magnetic fields with negative polarization reduced permeation, showing a complex interaction between magnetic fields and skin permeability. The study also found that RMF treatments lowered NAP skin accumulation, improving permeation efficiency. Physicochemical analyses (FTIR, XRD, solubility, and lipophilicity) revealed that while EMF exposure did not significantly change NAP's crystal structure, it did affect solubility and partition coefficient. This research highlights the potential of optimizing EMF parameters to enhance transdermal drug delivery and provides insights into the physicochemical interactions between EMFs and active compounds. The findings suggest that rotating magnetic fields, particularly at 50 Hz, offer the most significant improvement in drug permeability, which could be beneficial for developing advanced transdermal delivery systems. © 2025 The Author(s)

关键词： Active pharmaceutical ingredients Electromagnetic Field Naproxen Nonsteroidal anti-inflammatory drugs Skin barrier Transdermal drug delivery

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Recent advances in metal oxide photocatalysts for photocatalytic degradation of organic pollutants: A review on photocatalysts modification strategies 6

Recent advances in metal oxide photocatalysts for photocatal...

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6th National Conference on Postgraduate Research, NCON-PGR 2022

作者： Mohd Zaki, R.S.R. Jusoh, R. Chanakaewsomboon, I. Setiabudi, H.D. Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Lebuhraya Tun Razak Gambang Kuantan Pahang26300 Malaysia Centre for Research in Advanced Fluid & Processes Universiti Malaysia Pahang Lebuhraya Tun Razak Gambang Kuantan Pahang26300 Malaysia Faculty of Environmental Management Prince of Songkla University 15 Kanjanavanich Rd. Hat Yai Songkhla90110 Thailand

Wastewater from industries that predominantly consist of organic pollutants significantly contributes to water pollution and harms the environment, demanding urgent solutions. Among the available wastewater treatment technologies, photocatalysis has garnered considerable interest due to its high efficiency, cleanliness, and sustainability. However, metal oxide photocatalysts, despite extensive study, possess limitations such as agglomeration, rapid electron-hole recombination, and photo corrosion. These limitations hinder the practical design and synthesis of photocatalysts. To address these challenges, researchers have explored various photocatalyst modification approaches, including doping with noble or non-noble metals, crystal facet engineering, physical deposition, dye sensitization, and the implementation of the Z-scheme photocatalyst system. These modifications aim to enhance the catalytic properties of photocatalysts and improve the degradation of organic pollutants. This review article highlights recent advances in the modification strategies of metal oxide photocatalysts for the photocatalytic degradation of organic pollutants. The future prospect and conclusions were also discussed. This review is expected to provide an in-depth understanding of metal oxide photocatalyst development, thus accelerating the evolution of photocatalytic degradation of pollutants. © 2022 Elsevier Ltd. All rights reserved.

关键词： Wastewater treatment

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Development of Sustainable Polymer-Based Dielectric Composites from Agricultural Waste: A Review

SSRN

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SSRN 2024年

作者： Mekha, K.B. Abu Talip Yusof, Nurhafizah Kumarasamy, Sudhakar Zainol, Norazwina Hasan, Nurulfadzilah Karim, Mohamad Shaiful Abdul Faculty of Electrical and Electronics Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pahang Pekan26600 Malaysia Universiti Malaysia Pahang Al-Sultan Abdullah Lebuh Persiaran Tun Khalil Yaakob Pahang Kuantan26300 Malaysia Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Pahang Pekan26600 Malaysia Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Lebuh Persiaran Tun Khalil Yaakob Pahang Gambang26300 Malaysia

Dielectrics are essential for storing and controlling electrical energy in the electrical and electronic industries. However, their production from non-renewable sources raises environmental concerns. This review investigates sustainable dielectric composites made from agricultural waste, focusing on the various parameters that affect dielectric characteristics. These composites offer improved dielectric properties and contribute to waste reduction and environmental sustainability. Agricultural waste offers a promising, sustainable source of dielectric composite materials. It highlights the feasibility of using agricultural waste-based dielectric composites for dielectric material in various applications. Dielectric composite’s permittivity is influenced by carbon, oxygen, filler, temperature, cellulose, and morphological changes. Biodegradable materials like agricultural waste which have good fibre and carbon content can produce good dielectric constants, making them suitable for antennas and microwave absorbers. The review underscores the importance of sustainable practices in dielectric composite material development and the valuable role of agricultural waste in advancing environmentally friendly solutions. © 2024, The Authors. All rights reserved.

关键词： Microwave antennas

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Risk-Based Inspection for Ammonia Storage Unit by Using PRIMS: A Case Study 3

Risk-Based Inspection for Ammonia Storage Unit by Using PRIM...

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3rd Innovative Manufacturing, Mechatronics and Materials Forum 2022, iM3F 2022

作者： Omar, Marzuki Ramli, Azizan Johari, Kharul Anwar Saeid, Mohammed Faraj Faculty of Chemical and Process Engineering Technology College of Engineering Technology Universiti Malaysia Pahang Lebuhraya Tun Abdul Razak Gambang Pahang Kuantan26300 Malaysia Faculty of Industrial Sciences and Technology College of Computing and Applied Sciences Universiti Malaysia Pahang Lebuhraya Tun Abdul Razak Gambang Pahang Kuantan26300 Malaysia Aid Station Heavy Oil Depot and Oil Berth Brega Petroleum Marketing Company Tobruk Libya General Registrar Management United Libyan European University Salama Cross corner Ring Road Tobruk Libya

ISBN: (数字)9781839537813

ISBN: (纸本)9781839538063

Risk-based inspection (RBI) is a method that applies risk analysis as its foundation. In this study, RBI methodology is applied on an ammonia storage unit in a specialized bioprocess facility. A liquid ammonia is stored in two pressure vessels. This study aims to determine the level of risk posed by the storage unit and decide the right inspection method and timeframe to conduct the inspection on the unit. The methodology used is based on PRIMS-RBI software with reference to American Petroleum Institute, API 581 Risk-based inspection methodology. This study is the first application of RBI for ammonia storage tank in bio-processing facilities in Malaysia. Based on the analysis performed, the most credible damage mechanism experienced by the unit is identified as internal and external wall thinning. Also, based on the analysis, the probability of failure of this unit is identified as "Low", and the consequences of failure is identified as "Catastrophic". Based on the risk analysis, the risk level of this unit is categorised as "Medium-High" level. This "medium-high risk" is caused by the property of the fluid stored in this device, which is toxic in nature and may potentially cause serious safety and health impact to the surrounding population. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Inspection

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Evaluating asphaltene dispersion with choline chloride or menthol based deep eutectic solvents: A COSMO-RS analysis

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Journal of Molecular Liquids 2024年 407卷

作者： Neni, Amira Boublia, Abir Bouras, Mounira Bentoumi, Kamilia Albrahim, Malik Elboughdiri, Noureddine Benguerba, Yacine Ferhat ABBAS University of Setif-1 Sétif19000 Algeria Département de Génie des Procédés Faculté de Technologie Université Ferhat ABBAS Sétif-1 Sétif19000 Algeria Department of Process Engineering Faculty of Technology Ferhat Abbas University of Setif Setif19000 Algeria Chemical Engineering Department College of Engineering University of Ha'il Ha'il 81441 Saudi Arabia Chemical Engineering Process Department National School of Engineers Gabes University of Gabes Gabes6029 Tunisia Ferhat Abbas Sétif 1 University Sétif19000 Algeria

Deep Eutectic Solvents (DESs) have emerged as a distinct class of solvents with unique properties and advantages over conventional Ionic Liquids (ILs) and organic solvents. This study specifically focuses on evaluating the potential of DESs as aggregation inhibitors for asphaltenes. Utilizing the Conductor-like Screening Model for Real Solvent (COSMO-RS) method, we investigated a series of DESs based on choline chloride and menthol. The COSMO-RS approach enabled the accurate prediction of key thermodynamic properties, including density, σ profiles (charge distribution), and σ potentials (electrostatic potential) of the DESs. Our findings identified eight DESs as particularly effective in dispersing asphaltenes, providing a promising foundation for further experimental validation and potential application in the petroleum industry. © 2024

关键词： Asphaltenes

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Sustainable green poly(lactic acid) (PLA)/eggshell powder (ESP) biocomposites

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Materials Today: Proceedings 2023年 85卷 83-86页

作者： Mohd Bijarimi Syaidatul Alya Azlan M. Norazmi Erna Normaya M.S.Z. Mat Desa Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Lebuh Persiaran Tun Khalil Yaakob 26300 Kuantan Pahang Malaysia Experimental and Theoretical Research Laboratory Department of Chemistry Kulliyyah of Science International Islamic University Malaysia 25200 Kuantan Pahang Malaysia

Poly(lactic acid), which is most commonly referred to by its acronym PLA, is a polymer that may be recycled and naturally deteriorated. It is also inherently fragile and has a low impact strength . PLA, when mixed with eggshells powder, can produce a PLA/ESP composites. The purpose of this study was to investigate the physical characteristics of PLA composites that contained ESP or calcium carbonate (CaCO 3 ). Extrusion melt mixing in a twin-screw extruder was used in conjunction with PLA with different ESP concentrations to develop this eco-friendly and sustainable nanocomposite material. The blended compounds were allowed to reach room temperature before being formed into thin films with dimensions of 20 mm in width, 100 mm in length, and 5 mm in thickness. These films were put through a series of tests to determine their mechanical, thermal, and chemical properties. Tests including stress–strain properties, FTIR, thermogravimetric analysis (TGA), and scanning electron microscopy were performed on the films (SEM).

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Preparation and characterisation of pineapple peel waste as nanoadsorbent incorporated into Pebax 1657 nanocomposite membrane for CO 2 /CH 4 separation

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Materials Today: Proceedings 2021年 41卷 88-95页

作者： Alia Aqilah Ghazali Sunarti Abd Rahman Rozaimi Abu Samah Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Lebuhraya Tun Razak 26300 Gambang Kuantan Pahang Malaysia

Membrane processes have received wide attention for gas separation especially by the chemical and petrochemical industry. Recently, there have been intensive efforts in the development of better and more robust membrane material called nanocomposite membranes which involved the incorporation of nanoadsorbents such as zeolite and silica in the polymer matrix. However, the cost of the aforementioned nanoadsorbents is high which led to the researches on alternative low cost nanoadsorbents prepared from agricultural wastes. In this work, we investigate the use of pineapple peel waste as nanoadsorbent filled in the polyether block amide (Pebax) nanocomposite membrane to improve the membrane’s performance in separation of gases. The effectiveness of the membrane was evaluated based on the permeability and CO 2 /CH 4 selectivity. Several permeation experiments were carried out by controlling the Pebax concentration (6 wt%), dipping time (5 s), and temperature (25 ± 5 °C) with varying the feed pressure (1–3 bar) and nanoadsorbent concentration (0.5–8 wt% of polymer weight). The pore structure of the newly synthesised nanoadsorbent, structure modification, dispersion of the nanoadsorbents in the polymer matrix, and functional groups exist in the surface of the nanocomposite membranes were analysed using Brunauer–Emmett–Teller (BET), field emission scanning electron microscope (FESEM), energy-dispersive X-ray (EDX), and Fourier transform infrared spectroscopy (FTIR) analyses. The findings from this study suggested that the optimum feed pressure was at 2 bar with 5 wt% nanoadsorbent concentration in the coating solution which showed a significant improvement in CO 2 permeance (225.90 to 1682.76 Barrer) and CO 2 /CH 4 selectivity (10.71 to 33.17) in comparison to plain PVDF/Pebax. The incorporation of this low cost nanoadsorbents were reported to alter the polymer membrane structure and chemical properties which led to an improvement of the membrane’s separation ability. “Peer-

关键词： Pineapple waste Adsorbent Pebax Nanocomposite membrane CO 2 /CH 4 separation

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Electrocatalytic Upcycling of PET Plastics Over MOF-Derived NiCo Hydroxide Nanosheets with Energy-Efficient Hydrogen Production

SSRN

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SSRN 2024年

作者： Jiang, Mingkun Wang, Yajie Yang, Yang Gong, Xuehai Wang, Yujie Ratova, Marina Wu, Dan Key Laboratory of Green Chemical Engineering Process Ministry of Education Hubei Key Laboratory of Plasma Chemistry and New Materials School of Materials Science and Engineering Wuhan Institute of Technology Hubei Wuhan430205 China Faculty of Science and Engineering Manchester Metropolitan University Chester Street ManchesterM1 5GD United Kingdom

The rising accumulation of plastic waste, particularly polyethylene terephthalate (PET), poses a critical environmental threat, necessitating urgent and innovative recycling solutions. Current approaches to plastic upcycling lack efficiency, cost-effectiveness, and versatility, hindering the conversion of waste into high-value, easily separable chemicals. A transformative strategy is required to address these challenges and promote sustainable resource management. In this study, a MOF-derived NiCo hydroxide nanosheets electrode is designed for the electrocatalytic upcycling of waste PET plastics, while simultaneously producing energy-efficient H2. The synergistic interaction between Ni and Co in CoNi-MOF dramatically enhances the adsorption of ethylene glycol (EG) and boosts electronic transfer capability, resulting in an impressive Faradaic efficiency of 96.5% for formic acid production at 1.3 V vs. RHE. Comprehensive electrochemical measurements and real-time product analysis identify the Co3+/Co4+ species, generated during oxidation process, as the primary active sites for the selective cleavage of EG at C-C bonds. Notably, this electrocatalytic process efficiently valorizes real-life post-consumer PET bottles, yielding 12.74 g of potassium diformate and 3.28 g of terephthalic acid while co-producing 1.4 L of H2. This work introduces an efficient strategy for developing advanced catalysts for PET electro-upcycling while providing key insights into sustainable carbon cycle management. © 2024, The Authors. All rights reserved.

关键词： Energy efficiency

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