Article
Chemistry, Multidisciplinary
Snehasis Dutta, Ashok N. Bhaskarwar, S. Mukhopadhyay, K. T. Shenoy
Summary: The kinetics of solvent extraction of zirconium using tributyl phosphate as the extractant solvent have been studied, with the determination of reaction order, pre-exponential factor, and activation energy. The extraction of zirconium and co-extraction of nitric acid were found to have activation energies of 38.02 kJ/mol and 5.7 kJ/mol, respectively. Predictions of zirconium distribution coefficients were made based on the determined rate constants.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Seong Chan Lee, Hee Chul Woo, Young Han Kim
Summary: A new method using 2-methyl pentanol as an extraction solvent is proposed in this study. Thermodynamic models are constructed using molecular simulations and experimental results for process optimization, resulting in a reduction in heat consumption.
Article
Engineering, Chemical
Widi Astuti, Fajar Nurjaman, Fika Rofiek Mufakhir, Slamet Sumardi, Dira Avista, Kevin Cleary Wanta, Himawan Tri Bayu Murti Petrus
Summary: An alternative method for recovering nickel and other valuable metals from nickel laterite ores is proposed and evaluated in this study. The method involves a leaching step using citric acid to dissolve nickel and cobalt, and an oxalate precipitation step to precipitate nickel from the leach filtrate. The results showed that nickel and cobalt can be dissolved using 1 M citric acid solution at 80 °C, a pulp density of 100 g/L, and a leaching duration of 5 h. Complete precipitation of nickel can be achieved at 80 °C, 500 rpm stirring speed, and a precipitation duration of 3 h. The method can produce Mixed Oxalate Precipitate (MOP) with a purity of 78%.
MINERALS ENGINEERING
(2023)
Article
Energy & Fuels
Mansoor Khan, Devjyoti Nath, Hassan Hassanzadeh
Summary: This study presents the first experimentally measured data set on the exsolution/dissolution kinetics of methane and bitumen system. An analytical model is used to estimate the diffusion coefficients for the methane/bitumen system. The results show faster exsolution kinetics compared to dissolution for the methane-bitumen system. The reported diffusivity measurements have applications in the design and simulation of solvent-assisted thermal recovery of bitumen and heavy oil.
Article
Energy & Fuels
Seong Chan Lee, Hyeon Woo Oh, Hee Chul Woo, Young Han Kim
Summary: Bioethanol is commonly recovered from fermentation broth via distillation, which is the most economical and reliable process for large-scale industrial operations. High-performance solvents and efficient extraction processes are necessary for bioethanol recovery from low-composition bio-products. The study reduced the heat duty of the designed process by a quarter compared to previous recovery processes through the use of thermodynamic models and advanced solvents.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Chemical
Sayed-Ali Moussaoui, Anne Lelias, Bertrand Braibant, Daniel Meyer, Damien Bourgeois
Summary: A new reagent THMA was proposed for palladium extraction from waste, showing superior distribution ratios and selectivity compared to previous diamide reagents. The use of excess DHA during THMA preparation demonstrated improved kinetics performance. The best performing formulation of extraction solvent can be easily prepared from commercially available chemicals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ganyu Zhu, Yunrui Yang, Lei He, Huiquan Li, Ziheng Meng, Guangming Zheng, Fang Li, Xiaodan Su, Benjun Xi, Zhongjun Li
Summary: Phosphogypsum, a byproduct of wet-process phosphoric acid reaction, has led to environmental pollution issues. By establishing a liquid-solid-liquid three-phase acid hydrolysis synergistic extraction reaction system in the actual production process with the addition of a certain amount of extractant, the property and purity of phosphogypsum in the wet-process phosphoric acid process can be improved. The extraction effect and residue of impurities in the reaction system were systematically analyzed through the study of the phase, morphology, and impurity occurrences of phosphogypsum. The results showed that the conversion of P2O5 was the highest in phosphate rock under certain reaction conditions, and the residual P2O5 content in phosphogypsum was as low as 0.36%. The morphology of the phosphogypsum crystal was uniform and coarse long strip, and the residual impurities mainly consisted of silicate, aluminum fluoride with crystal water, aluminate, phosphate, and fluoride. This novel method greatly improves the property of phosphogypsum and promotes its utilization and the recycling development of the wet-process phosphoric acid industry.
Article
Astronomy & Astrophysics
Takafumi Kokubu, Shou-Long Li, Puxun Wu, Hongwei Yu
Summary: After placing a spherical mirror as a perfectly reflective boundary outside a charged black hole, the kinematics of charged particles allow us to model the growth of particles' energy through consecutive particle splits. This charged version of the Penrose process involves a charged particle decaying into two fragments, one with negative energy and the other with positive energy larger than that of the parent particle, resulting in monotonically increasing energy over time. Despite the energy increasing each time a split occurs, it asymptotes to a certain finite value, indicating stability of the system in this regard.
Article
Multidisciplinary Sciences
Xiaojie Ren, Chao Wei, Qi Yan, Xin Shan, Mengyun Wu, Xinhe Zhao, Yuanda Song
Summary: The efficiency of lipid extraction in microalgae can be greatly improved by washing algae cells before the extraction, and the combination of water treatment type, treatment time and solvent is crucial for the extraction efficiency. Different stages of microalgae cells have varying sensitivity to water treatment.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Kamal Benali, Rachid Benhida, Khaoula Khaless
Summary: In order to meet the market demand for iodine and manage iodine resources in the long term, phosphate rocks and their derivatives have been discovered as a possible source of iodine. This research focuses on developing a method to recover high purity iodine from wet phosphoric acid using pre-oxidation and solvent extraction. The effects of various operating variables were studied, and it was found that using 30% H2O2 as an oxidant, all iodine ions in wet phosphoric acid could be converted into elemental iodine. The resulting iodine precipitate was proven to be 99.9% pure through various analyses. A flowchart process was also developed to recover and minimize iodine loss from wet phosphoric acid without interfering with fertilizer production.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Chemical
Hyeon Woo Oh, Seong Chan Lee, Hee Chul Woo, Young Han Kim
Summary: Biobutanol is an attractive fuel due to its abundant lignocellulose utilization and similarities to gasoline. The use of a new solvent, 1-heptanol, for extraction can significantly reduce energy requirements and lower production costs. Process design results showed a decrease in energy requirement compared to previous methods with similar investments.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Nathan P. Bessen, Alexander S. Ivanov, Diana Stamberga, Vyacheslav S. Bryantsev, Bruce A. Moyer
Summary: Guanidine functional groups are often unstable due to hydrolysis, but by synthesizing guanidines with sterically bulky alkyl substituents and testing their stabilities, researchers have found that the branching of the alkyl group can increase the stability. This research is important for the development of the next-generation caustic-side solvent extraction (NG-CSSX) process for removing radioactive cesium from complex alkaline solutions. The most hydrolysis-resistant guanidine molecule, N,N '-dicyclohexyl-N''-(10-nonadecyl)guanidine (DCNDG), was found to have a stability 8 to 44 times greater than that of the currently used compound (TiDG) under different process conditions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Energy & Fuels
Seong Chan Lee, Hee Chul Woo, Young Han Kim
Summary: A combined extraction and distillation process for efficient recovery of 2,3-butanediol utilizing 2-heptanol as a solvent was proposed in this study, with the feasibility verified through experimental and simulation research. Energy consumption and total costs were significantly reduced by using 2-heptanol as a solvent for extraction, demonstrating a more sustainable and cost-effective approach.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2021)
Article
Engineering, Chemical
Vishal B. Thakare, Girirajsinh C. Jadeja, Meghal. A. Desai
Summary: Simultaneous extraction of mangiferin and pectin from waste mango peels was achieved using microwave-assisted extraction technique with the addition of hydrotropes and methanol. Hydrotropes improved the yield of mangiferin and enabled the extraction of pectin, while reducing the need for acidic solutions. The use of sonication further reduced the extraction time and the extract exhibited good antioxidant activities.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Electrochemistry
Masahiko Matsumiya, Ryoma Kinoshita, Yusuke Tsuchida, Yuji Sasaki
Summary: The extraction behavior and electrochemical behavior of Ir(IV) in a phosphonium-based ionic liquid system were studied, showing that Ir(IV) is reduced to metallic Ir in two steps. Diffusion coefficients of the extracted Ir(IV) species in the IL were determined, and consecutive solvent extraction and electrodeposition experiments were conducted.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Engineering, Chemical
Marichamy Mageshkumar, Ramasamy Karthikeyan
DESALINATION AND WATER TREATMENT
(2016)
Article
Chemistry, Multidisciplinary
M. Magesh Kumar, R. Karthikeyan, K. Anbalagan, M. Nishant Bhanushali
SEPARATION SCIENCE AND TECHNOLOGY
(2016)
Article
Green & Sustainable Science & Technology
Appunni Sowmya, Debanjani Das, Sivaraman Prabhakar, Marichamy Magesh Kumar, Kumaraguru Anbalagan, Mathur Rajesh
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2020)
Article
Engineering, Chemical
M. Magesh Kumar, A. Sakthi Saravanan
Summary: This study tested the efficacy of protein coagulant extracted from Moringa oleifera seeds in removing color from tannery wastewater, with NaCl-extracted coagulant showing the highest color removal efficiency. The second order kinetic mechanism was found to best describe the process, with the power law model showing the most accurate reflection of system behavior.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Green & Sustainable Science & Technology
Magesh Kumar Marichamy, Anbalagan Kumaraguru, Narendranath Jonna
Summary: This study successfully removed TSS from tannery wastewater using an active coagulating protein extracted from Moringa oleifera seeds. The results showed that the coagulant extracted using NaCl performed better with 89.87% TSS removal. The experimental findings demonstrated that the coagulant extracted using NaCl was most effective at a dosage of 40 mL and pH of 7 for optimal TSS removal.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agricultural Engineering
Jingmo Zhou, Shubin Wu, Ying Liu
Summary: Expenditure isolation of lignin and the understanding of its structural variations during different isolation processes are crucial for the high-value utilization of lignin. This study proposed a green deep eutectic solvent (DES) consisting of choline chloride, ethylene glycol, and 4-chlorobenzene sulfonic acid for rapid lignin separation from poplar. The structural variations of DES lignin and its relationship with alkali pre-extraction of hemicellulose were investigated. The results showed that alkali pretreatment enhanced the DES separation of lignin and promoted the cleavage of specific linkages, resulting in reduced molecular weight and thermal stability of isolated DES lignin. Moreover, DES lignin obtained from integrated utilization displayed higher purity and S/G ratio compared to lignin obtained from direct DES treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Yuping Li, Ziyan Xie, Yun Huang, Jiangyi Zeng, Chao Yang, Ling Yuan, Ying Wang, Yongqing Li
Summary: In this study, the characteristic flavonoids (CFs) of three licorice species were identified through integrated metabolic and transcriptomic analysis. The key regulators of CF biosynthesis were also identified. These findings provide valuable information for understanding the biosynthesis of CFs and future breeding of Glycyrrhiza varieties.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Xianjie Pan, Zhaoyi Luo, Fanqi Liu, Quanqian Yi, Yanning Zeng
Summary: This study presents a novel strategy for fabricating fully bio-based epoxy vitrimers using peach gum and itaconic acid, which exhibit superior mechanical properties and thermostability. The materials were characterized and the self-healing and recycling capabilities were evaluated. The results demonstrate the potential of using these materials for sustainable industrial applications.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Mohsen Sabzi-Nojadeh, Mohammad Pouresmaeil, Mina Amani, Mehdi Younessi-Hamzekhanlu, Filippo Maggi
Summary: This study shows that inoculating Summer savory plants with endophytic fungus Trichoderma harzianum can improve plant growth and increase salt tolerance. The fungus enhances growth, restores chlorophyll and antioxidant levels, reduces harmful substances, and increases proline and soluble sugar levels, thereby increasing crop productivity in saline conditions.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Yu Liu, Lei Li, Aichen Zhao, Xiuming Song, Lulu Wei, Mengdi Fang, Chuchu Zheng, Xiaodong Zhu
Summary: This study investigates the impact of peppermint essential oil microcapsules on the unpleasant odor emissions from wax oil coated wood products. The results show that microcapsules can improve the time and stability of odor release.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Mesut Budak, Mirac Kilic, Hikmet Guenal, Ismail Velik, Mesut Sirri
Summary: This study assessed land suitability for rapeseed production using topography, climate, and soil data by analytical hierarchy process (AHP) and the Mamdani Fuzzy Inference System (MFIS). The study area covered land in the Diyarbakir province of southeastern Turkiye. The results indicated the proportions of different land suitability classes and showed the compatibility of AHP and MFIS methods in assessing suitability.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Rui Tian, Yue Liu, Chao Wang, Weikun Jiang, Srinivas Janaswamy, Guihua Yang, Xingxiang Ji, Gaojin Lyu
Summary: In this study, hollow and solid lignin nanoparticles were synthesized through self-assembly and their application in PVA nanocomposite films was investigated. The results showed that the presence of hollow lignin nanoparticles in the films resulted in a room-like network structure, while the solid lignin nanoparticles induced different structural changes. The inclusion of LNPs improved the mechanical properties of the films, and both types of LNPs exhibited good hydrophobicity.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Marcos Vinicius Silva de Andrade, Simone Ribeiro Lucho, Renato Delmondez de Castro, Paulo Roberto Ribeiro
Summary: Stevia rebaudiana Bertoni, commonly known as stevia, is a widely cultivated shrub with highly sweetening metabolites. It has gained significant interest in the food and beverage industries due to its extremely sweet taste and various health benefits. Researchers are currently focused on studying biotechnological strategies to enhance the biosynthesis of stevia plant metabolites for improved cultivation and production.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Eleonora Cintura, Paulina Faria, Luisa Molari, Luca Barbaresi, Dario D'Orazio, Lina Nunes
Summary: This study investigated the properties of Arundo donax as a building material and found that it has strong adaptability, high hygroscopicity, and unique sound absorption behavior. The mechanical tests also demonstrated the applicability of the Arundo donax-based composite. This opens up new possibilities for the further application of Arundo donax-based materials.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Stiina Kotiranta, Juha-Matti Pihlava, Titta Kotilainen, Pauliina Palonen
Summary: The effect of light spectra, particularly far-red and short wavelength radiation, on the growth and secondary metabolites of cannabis is significant. Altering the R:FR ratio can increase the concentration and yield of secondary metabolites, while short wavelength radiation does not significantly affect plant morphology and secondary metabolite concentrations.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Xuze Liu, Fangmin Liang, Jinyuan Cheng, Xuelian Zhou, Jia Wang, Guigan Fang, Kuizhong Shen, Xianzhi Meng, Chen Huang, Arthur J. Ragauskas
Summary: A novel Na2S-facilitated DES pretreatment method was proposed to fractionate moso bamboo, which achieved high lignin removal and preserved most cellulose and hemicellulose with excellent enzymatic digestibility.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Zechun Ren, Xinyuan Zhou, Kejiao Ding, Tong Ji, Hao Sun, Xiang Chi, Yunzhao Wei, Min Xu
Summary: This study prepared a thermal/magnetic/light-triggered multi-stimuli responsive shape memory polymer composite with excellent properties by adding magnetic nanoparticles into a polyurethane composite. The composite showed high shape recovery rate, fast response behavior, and suitability for 3D printing. Controllable external stimuli allowed for dynamic, remote, and precise control of 4D transformations. This work is significant for the design of smart materials and devices.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Yurany Camacho Ardila, Jaiver Efren Jaimes Figueroa, Maria Regina Wolf Maciel
Summary: The higher heating value (HHV) and elemental composition are important properties of biomass, and their prediction using proximate and ultimate analysis is accurate.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Xiaohan Chen, Xianke Wang, Lili Shang, Xinxin Ma, Changhua Fang, Benhua Fei, Huanrong Liu, Shuqin Zhang
Summary: This study focuses on the comprehensive characterization of the three-dimensional (3D) structure of bamboo parenchyma and the evaluation of its tensile and compressive properties, as well as the analysis of its failure mechanisms. The study found that the measured tensile strength and elastic modulus of the parenchyma tissue are 48.81 MPa and 706.48 MPa, respectively. Compression failure modes in parenchyma tissue encompass compression bending and cell fracture, shear failure of the middle lamella, and detachment and debonding of the cell wall.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Agricultural Engineering
Tianfeng Liu, Yuxin Liu, Yunlin Fu, Mengji Qiao, Penglian Wei, Zhigao Liu, Yingjian Li
Summary: This study explored the formation mechanism of agarwood induced by fungus and its potential application in high-quality and high-yielding agarwood production. The results showed that the transition layer played a critical role in the continuous accumulation of agarwood, and the parenchyma cells of the xylem rays and interxylary phloem were the main action site of fungus. The accumulation and distribution of chemical composition in different layers were also investigated. The study identified the drivers of specific compounds and provided a theoretical foundation for future agarwood production.
INDUSTRIAL CROPS AND PRODUCTS
(2024)