Danh mục: Bài báo khoa học

A gas hydrate process for high-salinity water and wastewater purification
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A gas hydrate process for high-salinity water and wastewater purification

Abstract This study investigates the effectiveness of a hydrate-based water purification process on high-salinity and wastewater samples. Testing involved a 4-L-scale novel apparatus using HFC134a as a guest molecule during a continuous hydrate formation–pelletization–dissolution process. Each stage of the succeeded in removing 80–85% of individual dissolved contaminants from highly polluted water. This is the first study to...

Simultaneous removal of multi-nuclide (Sr2+, Co2+, Cs+, and I-) from aquatic environments using a hydrate-based water purification process
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Simultaneous removal of multi-nuclide (Sr2+, Co2+, Cs+, and I-) from aquatic environments using a hydrate-based water purification process

Abstract This study investigates the removal characteristics of a hydrate-based water purification process used to remove the major radionuclides monitored in nuclear accident areas. The effect of the coexistence of salt ions on the removal of radioactive materials is also evaluated. Previous studies have found existing processes such as ion exchange and membrane separation to be reliable methods for radionuclide removal from contaminated water. However, these...

Structure and electrochemical properties of surface-activated C/SiO2 composite derived from rice husks as a high-performance anode for sodium-ion batteries
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Structure and electrochemical properties of surface-activated C/SiO2 composite derived from rice husks as a high-performance anode for sodium-ion batteries

Summary Sodium-ion batteries (SIB) have been becoming a promising candidate for future energy storage and conversion owing to the abundant sodium sources and availability of their featured materials for solving the planet’s sustainability issues, which is recently a global overriding concern. The development of low-cost, sustainable, compatible, and stable anode materials should be parallel driven...

In vitro assessment of bovine-derived hydroxyapatite for bone xenografts
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In vitro assessment of bovine-derived hydroxyapatite for bone xenografts

Abstract Bovine bone-derived hydroxyapatite (BBHAp) has been reported to be a biocompatible and efficient bone graft substitute. In this study, hydroxyapatite (HAp) was produced by combining the cleaning process with alkali and thermal treatment of bovine bone. The calcination temperature was 700°C. The functionality of the BBHAp scaffold as a bone graft substitute was determined...

Revealing discrepancies in potential driving factors of particulate-bound mercury between urban and suburban sites in a Southeast Asian megacity using a generalized additive model
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Revealing discrepancies in potential driving factors of particulate-bound mercury between urban and suburban sites in a Southeast Asian megacity using a generalized additive model

Abstract Particulate-bound mercury (PBM) plays a critical role in atmospheric mercury (Hg) cycling, yet its complex spatiotemporal variability and potential driving factors remain insufficiently understood, particularly in the Southeast Asia (SEA) region. This study reported year-round (May 2022 to April 2023) data of PBM at an urban (Nguyen Van Cu: 59.81 ± 29.15 pg m−3)...

Integrated sponge-membrane bioreactor for removal of 3,4-dichlorophenol: Effects of hydraulic retention time on organic removal, biofouling and microbial adaptation
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Integrated sponge-membrane bioreactor for removal of 3,4-dichlorophenol: Effects of hydraulic retention time on organic removal, biofouling and microbial adaptation

Abstract This study presents the first application of a lab-scale Sponge-Membrane Bioreactor (Sponge-MBR) for treating wastewater containing 3,4-dichlorophenol (3,4-DCP). The effects of hydraulic retention time (HRT) were initially evaluated at three levels (5, 10, and 15 h) to identify an optimal operating condition based on chemical oxygen demand (COD) and 3,4-DCP removal performance. Accordingly, an...

Eco-friendly synthesis of silver nanoparticles from Camellia Chrysantha (Hu) Tuyama with potential anti-COVID application: Exploration via computational and experimental methods
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Eco-friendly synthesis of silver nanoparticles from Camellia Chrysantha (Hu) Tuyama with potential anti-COVID application: Exploration via computational and experimental methods

Abstract Camellia Chrysantha (Hu) Tuyama (CCT) is a valuable medicinal herb containing bioactive compounds with inhibitory activities against 3CLpro/Mpro of COVID-19. In this study, silver nanoparticles (AgNPs) were synthesized using the aqueous extract of CCT, and the role of CCT compounds in nanoparticle formation was investigated through combined experimental and computational approaches. Specifically, twelve major...

Viscoelastic strain recovery governs crack-tip opening dynamics of elastomers
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Viscoelastic strain recovery governs crack-tip opening dynamics of elastomers

Abstract This study explores the crack opening dynamics in Mode-I fracture of pre-stretched viscoelastic elastomer sheets under varying strain energy release rate (Γ). The degree of viscoelasticity was widely tuned by altering the mixing ratio of telechelic precursor chains and a tri-functional cross-linker, producing elastomers with different amounts of relaxation components such as dangling chains...

Enhanced nitrogen removal in sponge membrane bioreactor coupled with iron scraps for municipal wastewater treatment: Performance and microbial community shifts
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Enhanced nitrogen removal in sponge membrane bioreactor coupled with iron scraps for municipal wastewater treatment: Performance and microbial community shifts

Abstract This study investigates the performance of a sponge membrane bioreactor (SMBR) integrated with waste iron scraps as an innovative approach to enhance nitrogen removal from municipal wastewater. The incorporation of iron scraps substantially improved the total nitrogen (TN) removal efficiency, increasing from 35.3 ± 10.4 % to 62.4 ± 26.9 %, while maintaining stable chemical oxygen demand (COD) removal above...