Article
Chemistry, Multidisciplinary
Jeffrey A. Brock, Michael D. Kitcher, Pierre Vallobra, Rajasekhar Medapalli, Maxwell P. Li, Marc De Graef, Grant A. Riley, Hans T. Nembach, Stephane Mangin, Vincent Sokalski, Eric E. Fullerton
Summary: A new effect is discovered where domains expand unidirectionally in response to a combination of out-of-plane and in-plane magnetic fields, with the growth direction controlled by the in-plane field strength. The authors theoretically demonstrate that perpendicular field torques stabilize steady-state magnetization profiles highly asymmetric in elastic energy, resulting in a dynamic symmetry breaking consistent with experimental findings.
ADVANCED MATERIALS
(2021)
Article
Environmental Sciences
Neha Chandel, Vishal Ahuja, Ranjit Gurav, Vinod Kumar, Vinay Kumar Tyagi, Arivalagan Pugazhendhi, Gopalakrishnan Kumar, Deepak Kumar, Yung-Hun Yang, Shashi Kant Bhatia
Summary: The demand for antibiotics and pharmaceutical products is increasing globally, leading to pollution of aquatic systems. Microalgae have been widely used for micropollutant removal in the past decade. Bioadsorption, degradation, and accumulation are the main mechanisms involved in pollutant removal by microalgae. Integration of microalgae-mediated pollutant removal with other technologies can make this technology more economical and efficient.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Asad Ur Rehman, Nicolas Anton, Sophie Bou, Jeremy Schild, Nadia Messaddeq, Thierry Vandamme, Salman Akram, Andrey Klymchenko, Mayeul Collot
Summary: This study explores the use of specific amphiphilic polymers to stabilize and functionalize nano-emulsion droplets, demonstrating their potential for targeted drug delivery applications. The unique molecular structure allows for efficient anchoring of reactive functions on the droplet surface, paving the way for new advancements in drug delivery technologies.
Article
Green & Sustainable Science & Technology
Neda Pirmoradi, Mohammad Taghi Ghaneian, Mohammad Hassan Ehrampoush, Mohammad Hossein Salmani, Behnam Hatami
Summary: In this study, wastewater sludge from a poultry slaughterhouse treatment plant was converted into biodiesel through ultrasound-assisted in situ transesterification. Artificial neural network and response surface methodology were utilized to model and predict the process behavior with high accuracy. The biodiesel yield was found to be higher than that obtained from other types of sludge, showcasing the potential of ultrasound-assisted transesterification for biodiesel production.
Article
Nanoscience & Nanotechnology
Guangyan Chen, Baicun Hao, Yujia Wang, Yanan Wang, Hanzhong Xiao, Huifang Li, Xin Huang, Bi Shi
Summary: The study revealed the regional wetting mechanism of water and oil on amphiphilic collagen fibers, enabling dual separation of W/O and O/W emulsions with high efficiency by selectively retaining the dispersed water phase in hydrophilic regions and the dispersed oil phase in hydrophobic regions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Energy & Fuels
Chithirai Arutselvan, Harish kumar Seenivasan, Felix Lewis Oscar, G. Ramya, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi, Nooruddin Thajuddin
Summary: This article introduces microalgal biorefineries as an alternative technology for treating wastewater and producing biofuels, evaluates its techniques and potentials, and discusses current problems and future research directions.
Article
Environmental Sciences
Maria Neth, Ann Mattsson, David I'Ons, Susanne Tumlin, Magnus Arnell, Lena Blom, Britt-Marie Wilen, Oskar Modin
Summary: Planning and upgrading wastewater infrastructure requires transdisciplinary collaboration to address changing conditions and demands. This study presents a stepwise collaborative planning process that involves developing future scenarios in collaboration with stakeholders and experts, and uses a web-based digital tool to create sustainable choices for wastewater treatment plants (WWTPs).
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Nanoscience & Nanotechnology
Zhe Liu, Aimin Shi, Chao Wu, Xue Hei, Shanshan Li, Hongzhi Liu, Bo Jiao, Benu Adhikari, Qiang Wang
Summary: Shellac nanoparticles (SNPs) produced through the anti-solvent method were used to stabilize Pickering emulsions with different structures. The SNPs showed high hydrophobicity and successfully formed oil-in-water, bi-continuous, and water-in-oil Pickering emulsions. Additionally, the SNPs could be used as templates to prepare porous materials with good water and oil absorption properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Maryam Safaripour, Ehsan Parandi, Babak Aghel, Ashkan Gouran, Majid Saidi, Hamid Rashidi Nodeh
Summary: The current study aimed to generate biodiesel fuel using waste cooking oil as a low-cost feedstock through transesterification in a T-shaped microreactor, with a novel catalyst MGO@TiO2Ag. Characterization of the nanocatalyst was performed using SEM, FTIR, VSM, EDX, and XRD. The Box-Behnken design based on RSM was used to optimize reaction parameters, resulting in a maximum FAME yield of 96.54 +/- 1.16%. The manufactured FAMEs met the quality standards of the ASTM D6751 standard, demonstrating the effectiveness of the microreactor and MGO@TiO2Ag nanocatalyst.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Energy & Fuels
Mantian Li, Ping Lu, Changshen Ye, Jie Chen, Ting Qiu
Summary: To address the limitations of mass transfer and poor affinity between catalysts and feedstock oils in the transesterification reaction for biodiesel production, researchers synthesized a series of amphiphilic heteropolyacid-based sulfonic acid-functionalised ionic liquids (AHPA-SFILs). The AHPA-SFILs showed excellent catalytic performance by dissolving in the reaction medium and could be easily recovered. Under optimized conditions, [C16N-PS]-HPMo-1 AHPA-SFILs achieved a high yield of biodiesel, indicating promising application potential.
Article
Chemistry, Multidisciplinary
H. Meng, D. Du
Summary: The method describes a simple way to prepare high-efficiency ultrashort nanotube Pickering emulsifiers that can stabilize oil or water phase and form various emulsion types. By growing a layer of magnetic Fe3O4 nanoparticles, it enables the collection and recovery of oil-phase and magnetic nanotubes with huge potential applications for environmental protection.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Energy & Fuels
Ihab Ayad, Mamdouh T. Ghannam, Mohamed Y. E. Selim
Summary: This study investigates the stability of water-in-Jojoba biodiesel (WJBD) emulsion by examining the effects of factors such as surfactant concentration, water concentration, and mixing speed. The research reveals that emulsions stabilized with Tween-80 (HLB 15) and Span-80 (HLB 4.3) exhibit high stability, with small water droplet formation. The study also demonstrates minimal phase separation and consistent viscosity over time, indicating the stability of the emulsions. The findings contribute valuable insights for the practical application of WJBD in storage and engine operation.
Article
Environmental Sciences
K. Rohitha Thangam, A. Santhiya, S. R. Abinaya Sri, D. MubarakAli, S. Karthikumar, R. Shyam Kumar, N. Thajuddin, Michael Rahul Soosai, P. Varalakshmi, I. Ganesh Moorthy, Arivalagan Pugazhendhi
Summary: The study utilized biorefinery approaches for the coupled process of phycoremediation and biofuel production using freshwater microalgae. Scenedesmus sp. was able to utilize various nutrients in domestic wastewater for growth, contributing to wastewater treatment and biomass production. The production included lipid and bioethanol, with various techniques such as FT-IR and GC-MS used for analysis.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemistry & Molecular Biology
Umair Qasim, Terhi Suopajarvi, Juho Antti Sirvio, Oskar Backman, Chunlin Xu, Henrikki Liimatainen
Summary: A dual-functioning deep eutectic solvent system based on triethylmethylammonium chloride and imidazole was used to synthesize amphiphilic cellulose nanofibers (ACNFs) through esterification. These ACNFs showed stable dispersion in water and surface activity, and could be used as stabilizers in oil-in-water Pickering emulsions and coatings.
Article
Chemistry, Multidisciplinary
Max E. Distler, Kaitlin M. Landy, Kyle J. Gibson, Byeongdu Lee, Steven Weigand, Chad A. Mirkin
Summary: In this study, novel DNA dendrimers were synthesized and characterized, which can break the symmetry in colloidal crystals and enable directional interactions. By modulating the shape anisotropy of the DNA dendrimers, the distribution of nanoparticles within the crystals can be precisely controlled.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Environmental Sciences
Maria Clara V. M. Starling, Elizangela P. Costa, Felipe A. Souza, Elayne C. Machado, Juliana Calabria de Araujo, Camila C. Amorim
Summary: This study investigated an innovative alternative using persulfate as an oxidant to improve municipal wastewater treatment plant effluent quality, targeting the removal of contaminants, antibiotic-resistant bacteria, and disinfection. The solar/Fe/S2O82- process showed unprecedented efficiency at neutral pH with intermittent iron additions, outperforming solar/Fe/H2O2 in terms of cost and removal efficiencies for target contaminants and bacteria.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Lidia Gaudencio Ribeiro Silva, Elizangela Pinheiro Costa, Maria Clara Vieira Martins Starling, Taiza dos Santos Azevedo, Sue Ellen Costa Bottrel, Renata Oliveira Pereira, Ananda Lima Sanson, Robson Jose Cassia Franco Afonso, Camila C. Amorim
Summary: The study evaluated the removal of endocrine disruptors and estrogenic activity in wastewater treatment plant effluent using LED irradiated photo-Fenton process. The results showed that under optimal experimental conditions, LED photo-Fenton was effective in removing endocrine disruptors and part of the estrogenic activity in the effluent.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Elizangela Pinheiro Costa, Maria Clara Vieira Martins Starling, Camila C. Amorim
Summary: This work provides a bibliographic review on the simultaneous removal of contaminants of emerging concern (CECs) and disinfection in domestic wastewater matrices, highlighting the recent attention to removing CECs and pathogens simultaneously. The study employs a combination of bibliometric analysis and systemic approach to select five highly cited papers and authors, revealing the need for further exploration in depth for new technologies.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Elizangela P. Costa, Melina Roccamante, Patricia Plaza-Bolanos, Isabel Oller, Ana Aguera, Camila C. Amorim, Sixto Malato
Summary: This study proposes the evaluation of an aluminized surface on the bottom of open reactors for a photo-Fenton process to remove micropollutants from municipal wastewater treatment plant effluents. The research found that using lower doses of iron and H2O2 at circumneutral pH effectively degraded various micropollutants in a pilot-scale raceway pond reactor. The results suggest that the strategy of utilizing an aluminized surface can improve the photo-Fenton reaction for efficient micropollutant removal.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Vagner de Oliveira Machado, Angela Leao Andrade, Jose Domingos Fabris, Erico Tadeu Fraga Freitas, Jose Maria da Fonte Ferreira, Alice Simon, Rosana Zacarias Domingues, Luis Eugenio Fernandez-Outon, Flavia Almada do Carmo, Antonio Carlos dos Santos Souza, Hugo Saba
Summary: This study focuses on the preparation of hybrid nanoparticles with magnetite cores and polymer shells for applications in hyperthermia and drug delivery. Advanced characterization techniques were used to evaluate the physical properties of these nanoparticles, revealing a relatively uniform core/shell mass ratio and a decrease in shell melting temperature with decreasing thickness.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Carolina S. Andrade, Anna Paula S. Godoy, Marcos Antonio Gimenes Benega, Ricardo J. E. Andrade, Rafael Cardoso Andrade, Wellington Marcos Silva, Josue Marciano de Oliveira Cremonezzi, Waldemar Augusto de Almeida Macedo, Pedro Lana Gastelois, Helio Ribeiro, Jaime Taha-Tijerina
Summary: The study focused on synthesizing graphene oxide (GO) by changing the graphite/oxidizing reagents mass ratios (mG/mROxi), resulting in high quality GO nanosheets with good yield and process savings. The analysis showed that the major GO product consisted of nanosheets with 1-5 layers and lateral size up to 1.8 µm, indicating the potential for producing GO with desirable physicochemical characteristics.
Article
Engineering, Environmental
Pamela B. Vilela, Maria Clara V. M. Starling, Rondon P. Mendonca Neto, Felipe A. R. de Souza, Giovanna F. F. Pires, Camila C. Amorim
Summary: This study compared the effectiveness of solar/Fe2+/S2O82- and a combined oxidant system in eliminating antimicrobial-resistant bacteria and genes in municipal wastewater treatment plant effluent (MWWTPE). It was found that solar/Fe2+/S2O82- reduced the richness and diversity of microbial community, effectively removed major phyla originally present in MWWTPE, and achieved partial removal of antimicrobial resistance genes. On the other hand, the combined oxidant system had no significant impact on the alpha diversity of the microbial community, and was less efficient in eliminating antimicrobial-resistant bacteria compared to solar/Fe2+/S2O82-, but caused DNA fragmentation. Further investigation is needed to understand the mechanisms involved in bacterial inactivation and DNA damage in the combined oxidant system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Environmental Sciences
Fernando Rodrigues -Silva, Maria Clara V. M. Starling, Camila C. Amorim
Summary: This review focuses on the application of solar photo-Fenton as a post-treatment for municipal secondary effluents (MSE) in developing tropical countries. While alternative technologies like stabilization ponds and upflow anaerobic sludge blanket (UASB) are widely used in these countries, there is limited data on the use of solar photo-Fenton to improve the quality of effluents from UASB systems. The review summarizes the main achievements and limitations associated with the application of solar photo-Fenton at pilot scale and neutral pH, and discusses the challenges of using it as a post-treatment for MSE generated by alternative treatments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Eduardo O. Marson, Cleiseano E. S. Paniagua, Oswaldo Gomes Junior, Barbara R. Goncalves, Valdislaine M. Silva, Ivo A. Ricardo, Maria Clara V. M. Starling, Camila C. Amorim, Alam G. Trovo
Summary: This work presents data on the occurrence and treatment of Contaminants of Emerging Concern (CECs) in Brazil in the past decade. The study reveals the detection of various pharmaceutical drugs, pesticides, hormones, illicit drugs, caffeine, and bisphenol A in different matrices. The inefficiency of conventional wastewater treatment methods and lack of basic sanitation contribute to the contamination of Brazilian aquatic environments and pose environmental and health risks. Advanced oxidation processes (AOPs) are considered viable alternatives to degrade CECs and prevent contamination. However, most studies evaluate the treatment of distilled water or simulated effluent, highlighting the importance of conducting studies in real matrices to drive the implementation of AOPs in water and wastewater treatment plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jose Gustavo da Costa, Adriana S. de Albuquerque, Jose Domingos Ardisson, Luis Eugenio Fernandez-Outon, Rogerio S. de Queiroz, Tsutomu Morimoto
Summary: The identification of sources that produce particulate atmospheric matter is crucial for reducing air pollution and developing environmental policies. This study investigated the contribution of industrial activities and natural sources to particulate matter in the Metropolitan Region of Vitoria, Brazil. Analytical techniques were used to identify different sources, and the results helped to distinguish sources that process ferrous and carbonaceous materials.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Karen Bolis, Gabriela Silva Goulart, Alisson Carlos Krohling, Renato Mendonca, Luis Eugenio Fernandez-Outon, Jose Domingos Ardisson
Summary: Nd-Pr-Fe-B sintered magnets are crucial for emerging technologies such as electric and hybrid vehicles and wind turbines. The production of these magnets generates significant amounts of machining residues. As China dominates the rare-earth market, processing wastes offer a promising alternative for recycling or reusing rare-earth materials. The study of these magnets is expanding due to the large amount generated and their chemical composition containing critical rare-earth elements.
Review
Environmental Sciences
Eloisa Stephanie da Silva, Maria Clara Vieira Martins Starling, Camila Costa Amorim
Summary: This manuscript critically reviews the application of LED-based photo-Fenton processes for the removal of contaminants of emerging concern from aqueous matrices. The study covers the influence of LED sources, wavelengths, and dose on the degradation of contaminants and potential applications in disinfection, abatement of antibiotic-resistant bacteria and genes. LED microreactors show high efficiency in contaminant degradation and are scalable with reduced area requirements.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Marielle Mara da Silva, Bruno Rocha Santos Lemos, Marcelo Machado Viana
Summary: Graphene oxide (GO) is a carbon nanomaterial with unique properties, and its addition to ethylene glycol (ETG) can enhance the thermal properties of heat transfer fluids. The rheological study of ETG/GO nanofluids showed increased viscosity and storage module, indicating the potential application of GO nanofluids in thermal systems.
MATERIA-RIO DE JANEIRO
(2021)
Article
Chemistry, Multidisciplinary
Alice G. Leonel, Alexandra A. P. Mansur, Sandhra M. Carvalho, Luis Eugenio F. Outon, Jose Domingos Ardisson, Klaus Krambrock, Herman S. Mansur
Summary: （English Summary:）
In this study, superparamagnetic ferrofluids composed of magnetite and cobalt-doped magnetite nanoconjugates were successfully designed and produced using an eco-friendly aqueous method. The gradual substitution of cobalt in the magnetite host material significantly affected the magnetic anisotropy properties of the ferrofluids, enhancing their cell-killing activities in magnetic hyperthermia experiments. The incorporation of cobalt into magnetite-polymer nanostructures presents a smart strategy for tuning their magnetothermal capability towards cancer therapy by heat generation.
NANOSCALE ADVANCES
(2021)
Article
Nanoscience & Nanotechnology
Gabriel Augusto Alemao Monteiro, Ricardo Geraldo de Sousa, Wellington Marcos da Silva, Pedro Lana Gastelois, Waldemar Augusto de Almeida Macedo, Edesia Martins Barros de Sousa
Summary: The study combined sensitive hydrogels with boron nitride nanotubes to create a potential drug delivery system capable of withstanding shear stress in the bloodstream.
APPLIED NANOSCIENCE
(2021)
