Article
Engineering, Environmental
Jun Gao, Lei Li, Shijie Yuan, Sisi Chen, Bin Dong
Summary: This study investigated the effects of thermal hydrolysis pretreatment (THP) on sludge humification and the related regulatory mechanisms during anaerobic digestion (AD). The results showed that THP at different temperatures affected the humification process of sludge during AD. The availability of polysaccharides, determined by their occurrence state and molecular structure, played a crucial role in sludge humification and could be regulated by THP.
Article
Nanoscience & Nanotechnology
Zonglin Li, Kaisheng Ming, Bo Li, Suyun He, Bin Miao, Shijian Zheng
Summary: Titanium alloys produced by laser powder bed fusion have fine microstructures and multi-scale interfaces, resulting in ultrahigh strength and low ductility. Annealing treatments decrease the strength while increasing the ductility, leading to a good strength-ductility combination.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Green & Sustainable Science & Technology
Gunes A. Yakaboylu, Changle Jiang, Tugrul Yumak, John W. Zondlo, Jingxin Wang, Edward M. Sabolsky
Summary: The study examined the impact of chemical pretreatment time on the activated carbons derived from Miscanthus grass biomass. By controlling the pretreatment duration, the microstructure, chemistry, and active functional groups were adjusted, leading to improved electrochemical performance of the activated carbons. The optimal KOH pretreatment resulted in high specific capacitance, cycling stability, specific energy, and specific power, highlighting the importance of pore volume, cellulose content, C/O ratio, and surface chemistry on the electrochemical performance.
Article
Environmental Sciences
Yujun Wu, Yifan Jiang, Jun Jiang, Li Chen, Xinfeng Qin, Hartley William, Shengguo Xue
Summary: The study found that mechanical grinding pretreatment can inhibit the release of alkaline minerals during BR dealkalization process, thereby improving the efficiency of acid resistance dissolution, and reducing environmental impact by blocking the interface reaction between embedded alkaline solids and acids.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Paper & Wood
Ashok Kumar Bharimalla, S. P. Deshmukh, Sharmila Patil, Vigneshwaran Nadanathangam, Sujata Saxena
Summary: This study aimed to develop an energy-efficient production process for nanocellulose (NC) from cotton linters. By using cellulase enzyme pretreatment and controlled temperature refining, NC with a fiber diameter of 125 +/- 25 nm was obtained, and the energy consumption was only 9.96 kWh/kg NC.
Article
Materials Science, Multidisciplinary
Melissa Thrun, Amy Clarke, Kester Clarke
Summary: This study investigates the effects of compositional heterogeneities on the retained austenite fractions in a quenching and partitioning steel. The results show that the Mn banding from solidification can change the retained austenite fractions.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Nidhi Aggarwal, Priyanka Pal, Neeraj Sharma, Shunmugavel Saravanamurugan
Summary: This study presents two different two-step approaches for the efficient removal of silica from rice straw and separation of its major components, resulting in the obtainment of highly pure cellulose.
Article
Agricultural Engineering
Abhishek Singhal, Maria Goossens, Jukka Konttinen, Tero Joronen
Summary: This study evaluated the effect of washing parameters on the chemical composition of oil palm empty fruit bunches (EFB) and recommended optimal conditions for large-scale washing pre-treatment. The results showed significant removal rates of elements such as Cl, S, K, ash, and N after washing EFB, with a second-order leaching kinetics observed. Pilot tests confirmed the effectiveness of the pre-treatment, supporting the recommended parameters of 10 minutes washing at 50 degrees C with a 1:15 S:L ratio for large-scale applications.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yuanhang Zhang, Siji Xu, Kun Huang, Xiang-Yu Zhang, Da-Bin Qin, Bin Zhao
Summary: A novel copper metal-organic framework (Cu-MOF) was constructed through self-assembled coordination under hydrothermal conditions, showing promising applications in catalysis and luminescent sensors. The Cu-MOF exhibited high catalytic efficiency in CO2 epoxidation to cyclic carbonates and could serve as a turn-on Fe3+-selective luminescent sensor. It also demonstrated excellent recycling ability and regenerability in both catalysis and sensing.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Polymer Science
Jesus M. Quiroz-Castillo, Dora E. Rodriguez-Felix, Jorge Romero-Garcia, Tomas J. Madera-Santana, Jose C. Encinas-Encinas, Maria M. Castillo-Ortega, Dagoberto Cabrera-German, Lauren L. Lizarraga-Laborin
Summary: The development of extruded films composed of biopolymers blended with synthetic polymers aims to minimize environmental impact and lead to sustainable plastic industry. By maximizing the weight content of biopolymers without compromising performance properties, extruded films with up to 50 wt% biopolymers show acceptable thermal and mechanical properties. Improving processing characteristics and homogeneous distribution of biopolymers throughout the films make them an alternative to conventional synthetic-polymer films.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
B. Vishwanadh, N. Naveen Kumar, G. Samyuktha, Vijay Kaushik, R. Tewari
Summary: In this study, a new thermo-mechanical processing route with reduced deformation temperature was developed for Nb-5Mo-1Zr-0.1C alloy. The alloy was processed through warm rolling and cold rolling routes, and both routes showed similar mechanical properties due to the nearly identical microstructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Textiles
Alisson Farley Soares Duraes, Jordao Cabral Moulin, Allan de Amorim dos Santos, Maryella Junnia Ferreira E Silva, Renato Augusto Pereira Damasio, Gustavo Henrique Denzin Tonoli
Summary: This study evaluated the effects of cellulase-mediated enzymatic pretreatment on dislocations in commercial Eucalyptus kraft pulp fibers. The results showed that enzymatic treatment increased the number of dislocations and amorphous regions while decreasing the length of the cellulose chain. Different enzymes had varying effects on the dislocation index of bleached fibers, whereas unbleached fibers showed less significant changes in dislocation index.
FIBERS AND POLYMERS
(2021)
Article
Materials Science, Multidisciplinary
Mantosh Mandal, B. Aashranth, Dipti Samantaray, M. Arvinth Davinci, Vani Shankar, M. Vasudevan
Summary: Dynamic transformation of austenite to ferrite was observed in a W-containing 9%Cr steel during hot deformation, and it was found to be dependent on the process kinetics, specifically the work-hardening rate and strain rate. The kinetics of the transformation is influenced by competing processes of dislocation immobilisation and remobilisation, which have complex dependencies on the strain rate. The microstructural manifestation of the dynamic transformation differs from that of conventional ferrite due to differences in transformation modes and crystallography. The practical implications of this transformation in thermo-mechanical processing are discussed, including process control and stability.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jiajun Xu, Shiai Xu, Junzhe Hao, Hailian Cao, Han Miao
Summary: Good adhesive strength and joint durability are achieved in aluminum/polymer laminated film for lithium-ion battery packages through a pretreatment method involving alkaline degreasing followed by acid pickling. The pretreatment with 0.5 M HF pickling improves the adhesive strength by facilitating complete coverage of Cr(III) compounds and the formation of a thicker Cr(III) conversion coating on the aluminum foil. In addition, GMA in the adhesive exhibits stronger binding energy with Cr(III) oxides and hydroxides compared to Al oxides and hydroxides.
APPLIED SURFACE SCIENCE
(2024)
Article
Multidisciplinary Sciences
Xin Chen, Junxiang Chen, Huayu Chen, Qiqi Zhang, Jiaxuan Li, Jiwei Cui, Yanhui Sun, Defa Wang, Jinhua Ye, Lequan Liu
Summary: In this study, a strategy of promoting water dissociation on Bi2O2CO3 is reported to achieve high solar to formate energy conversion in CO2 electroreduction. The authors identify CO3* as the key surface species for formate formation through electron spin resonance measurements and in situ Raman spectroscopy combined with isotopic labelling. The efficiency of solar to formate energy conversion reaches as high as 13.3% when combined with a photovoltaic device.
NATURE COMMUNICATIONS
(2023)
