Article
Engineering, Chemical
Samah Benamer Oudih, Djamel Tahtat, Assia Nacer Khodja, Mohamed Mahlous, Yasmina Hammache, Abd-Errahim Guittoum, Salima Kebbouche Gana
Summary: A fractional factorial design was employed to optimize the production process of chitosan nanoparticles (ChNs) and analyze their size and zeta potential. The size of ChNs was influenced by the initial concentration and molecular weight of chitosan, TPP concentration, and stirring speed. The zeta potential was significantly affected by the chitosan molecular weight, chitosan concentration, and stirring speed. Analysis techniques such as FTIR, XRD, and DSC were used to characterize the ChNs and evaluate the crosslinking effect on their crystal structure.
POLYMER ENGINEERING AND SCIENCE
(2023)
Review
Chemistry, Analytical
Adrian Golebiowski, Boguslaw Buszewski
Summary: The work discusses the application of analytical techniques to characterize biological and metallic colloidal species. Various techniques are used to determine particle size distributions, molar mass, zeta-potential, and chemical speciation. These physicochemical properties are crucial in understanding colloid stabilization phenomena and their interactions with other compounds.
MICROCHEMICAL JOURNAL
(2023)
Article
Energy & Fuels
Yang Li, TianQi Qin, Feisheng Feng, Yuanyuan Zhang, Sheng Xue
Summary: Improving the bioavailability of coals can increase the production of secondary biogenic coalbed methane (CBM), but the influence of different elements on biological methane yield is not well understood. This study analyzed the effect of high nitrogen amendment on biological methane yield using indoor anaerobic culture experiments. The results showed that high nitrogen amendment significantly increased the methanogenic rate and changed the microbial community structure and functional gene composition. It also increased the abundance of methanogenic and aromatic compound-degrading bacteria. Overall, this study highlights the importance of nitrogen as a key element in enhancing biological methane yield and provides insights for CBM exploration and development.
Article
Engineering, Chemical
Zhijie Fu, Jesse Zhu
Summary: A general correlation has been developed for the first time to predict the effective density for immersed object separation in fluidized beds by correlating available experimental data. This correlation accurately predicts the effective density for various immersed objects in fluidized beds with single or binary particle systems. It has wide applicability in coal dry beneficiation, iron and copper ore pretreatment, agricultural crop cleaning, and municipal solid waste classification, providing an efficient design and operation method for Gas-Solid Fluidized Bed Coal Beneficiator (GSFBCB).
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Green & Sustainable Science & Technology
Gwon Woo Park, Gyeongtaek Gong, Jeong Chan Joo, Jinju Song, Jiye Lee, Joon-Pyo Lee, Hee Taek Kim, Mi Hee Ryu, Ranjna Sirohi, Xinshu Zhuang, Kyoungseon Min
Summary: This article provides a comprehensive review on biological approaches, such as enzymes and microorganisms, for lignin degradation. It also highlights recent advancements in biotechnological lignin valorization, including metabolic engineering for producing useful fuels and chemicals and the use of lignin-based hybrid materials for biosensor and biomedical applications. Future research directions and the potential of utilizing all components of lignocellulosic biomass in zero-waste refineries are discussed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Medicine, Research & Experimental
Xingjia Mao, Yanyan Cao, Zijian Guo, Linlin Wang, Chuan Xiang
Summary: Osteoarthritis is a common joint disorder characterized by cartilage degeneration, and circular RNAs have emerged as a popular research topic in influencing various aspects of OA progression. CircRNAs may serve as therapeutic targets and diagnostic biomarkers for OA, suggesting potential roles in effective treatment strategies.
MOLECULAR THERAPY-NUCLEIC ACIDS
(2021)
Article
Engineering, Chemical
Xuchen Fan, Yongxin Ren, Liang Dong, Chenyang Zhou, Yuemin Zhao
Summary: A density model of fine coal in fluidized bed separation process was proposed in this study, and it was found that the separation effect is better with the increase of feeding coal particle size. Fluidization theories can explain the important factors in the fine coal separation process, which help to enhance processing capacity and increase the separation granularity range.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xiao Luo, Xin Yang, Yuanqi Weng, Cunqian Fang, Xiaxiang Zhang, Qizhong Huang
Summary: (Zr0.25Hf0.25Ti0.25Ta0.25)C high-entropy ceramics with exceptional compressive strength were prepared by spark plasma sintering at different temperatures. The compressive strength decreases with the increase of average grain size.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Environmental Sciences
Qingquan Liu, Yuanyuan Liu, Xiaodong Lu, Biao Lv, Siwen Zheng, Xingyi Nie, Liang Wang, Songsong Zhu, Qian Zhang
Summary: The average radius of coal particles is currently calculated using the arithmetic mean of coal particle sieved intervals. However, this calculation ignores the coal particle size distribution, leading to significant deviations in calculating the gas diffusion coefficient. A proper average radius calculation method should consider the particle size distribution and the physical essence of diffusion.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yang Li, TianQi Qin, Zhong Liang, Chunshan Zheng
Summary: In this study, the biological methanogenic potential of coal and oil samples in an oil-bearing coal seam was analyzed. The results showed that the biological methanogenic efficiency of the coal sample increased over time, while the oil sample had a higher methanogenic potential. The microbial composition and metabolites specific to coal and oil were also investigated. This study provides valuable information for eliminating oil from coal in oil-bearing coal seams and reducing the risks associated with coal seam mining.
Article
Energy & Fuels
Pedro Trechera, Teresa Moreno, Patricia Cordoba, Natalia Moreno, Xinguo Zhuang, Baoqing Li, Jing Li, Yunfei Shangguan, Ana Oliete Dominguez, Frank Kelly, Xavier Querol
Summary: This study analyzed the characteristics and differences in particle size and composition of deposited coal mine dust in open-pit mine areas, indicating the impact of different mining operations and mine areas on air pollutant levels. It also emphasized the importance of extracting more deeply respirable size fraction of coal mine dusts for future research.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Chemistry, Physical
Karishma Jain, Aleksandar Y. Mehandzhiyski, Igor Zozoulenko, Lars Wagberg
Summary: The study focuses on the particle morphology, size, charge density, and zeta potential of PEDOT:PSS dispersion, showing significant changes with pH levels and ionic strengths. The molecular model developed accurately represents the characteristics of PEDOT:PSS nanoparticles in aqueous dispersion. The results provide new insights and a deep understanding of the morphology and zeta potential evolution in PEDOT:PSS dispersion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Wan-Xuan Ho, Wen-Ting Chen, Chih-Hsuan Lien, Hsin-Yu Yang, Kuan-Hung Chen, Yu-Fan Wei, Meng-Han Wang, I-Ting Ko, Fan-Gang Tseng, Hsien-Sheng Yin
Summary: Chitosan-coated alginate microparticles were developed as a carrier for bovine serum albumin (BSA) or porcine IL-1 beta (pIL-1 beta), and their physical, chemical, and biological properties were evaluated. The coated microparticles showed sustained release and enhanced bio-activity, making them a potential adjuvant for pig vaccine formulations.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Paper & Wood
Lovepreet Kaur, Shiwani Guleria Sharma
Summary: In this study, lignin degrading bacteria were isolated from decaying wood samples, and their enzymatic activity and growth performance were evaluated.
CELLULOSE CHEMISTRY AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Nimra Nadeem, Qamar Abbas, Muhammad Yaseen, Asim Jilani, Muhammad Zahid, Javed Iqbal, Adil Murtaza, Marcin Janczarek, Teofil Jesionowski
Summary: In this study, copper ferrite nanoparticles and their CFA nanocomposites were successfully synthesized for the photocatalytic degradation of Methyl Orange dye. The optimized conditions for degradation were identified, and the key reactive species for the photocatalytic process were determined through radical scavenging experiments. Response surface methodology was used to assess the interaction effects among experimental variables.
APPLIED SURFACE SCIENCE
(2021)