Review
Engineering, Environmental
Jie Zhang, Chuanxian Li, Lei Shi, Xue Xia, Fei Yang, Guangyu Sun
Summary: This study summarizes the recent development of hydrate formation and aggregation in water in-oil emulsions containing wax crystals, asphaltenes, and solid particles. The research found that these compositions can either promote or inhibit hydrate formation, and can also change the surface properties of hydrate particles, affecting their aggregation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Mathieu Balcaen, Johan Steyls, Arnulf Schoeppe, Veronique Nelis, Paul Van der Meeren
Summary: The study revealed that the composition of oil phase and phospholipids can influence the characteristics of w/o emulsions and w/o/w emulsions. Additionally, the hydrophilic emulsifier was found to have an impact on the properties of w/o/w emulsions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Yuanxing Ning, Minghui Yao, Yuxing Li, Guangchun Song, Zhiming Liu, Qingping Li, Haiyuan Yao, Wuchang Wang
Summary: The effects of asphaltene on hydrate formation were investigated through experimental research, molecular dynamics simulations, and mathematical modeling. It was found that the presence of asphaltene increased the nucleation induction time for hydrate formation. Additionally, asphaltene restrained hydrate formation and decreased total gas consumption. A model incorporating asphaltene was developed to provide a new approach for ensuring flow in deep-water oil and gas fields.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Food Science & Technology
Karnam Sangwan, Renu Garhwal, Rahul Mehra, Yash Pal, Anuradha Bhardwaj, Varij Nayan, Naveen Kumar, Shiv Kumar, Gulden Goksen, Jose M. Lorenzo, Harish Kumar
Summary: Watermelon rind and seeds, as agro-industrial waste, can be used to produce double emulsions encapsulating lyophilized watermelon rind powder using watermelon seed oil. Various emulsifiers and stabilizers were used to optimize the preparation of stable double emulsions. The selected combination exhibited better emulsification properties and can be considered as appropriate food-grade systems.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Food Science & Technology
Zhenfeng Xie, Yi Wu, Xin Lu
Summary: In this study, epigallocatechin gallate (EGCG) was encapsulated in emulsified oil droplets of protein-stabilized emulsions for the first time, with the participation of peppermint essential oil (PEO). The stability of EGCG in the emulsion was improved by constructing the oil-water interface with crosslinked gum arabic (GA) and sodium caseinate (SC). This study provides valuable insights for the efficient encapsulation and stability improvement of hydrophilic active ingredients in emulsified oil droplets based on emulsion systems.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xiaohui Mao, Feifei Wang, Baoshan Lu, Tian Tang, Qi Liu, Hongbo Zeng
Summary: In this study, a novel polymer nanoparticle PBM@PDM was synthesized and used as a demulsifier for stable water-in-oil (W/O) or oil-in-water (O/W) emulsions. PBM@PDM could immediately induce coalescence of water droplets and effectively release water in W/O emulsion. It also successfully destabilized O/W emulsion stabilized by asphaltenes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Food Science & Technology
Kristyna Opustilova, Barbora Lapcikova, Lubomir Lapcik, Shweta Gautam, Tomas Valenta, Peng Li
Summary: Physicochemical analyses were conducted on curcumin standard sample and curcumin multiple emulsions. The study revealed poor stability of the emulsions and showed that the content of curcuminoid substances can be determined using MDSC method. CLSM observation confirmed the presence of suspended curcumin particles in the oil phase.
Article
Chemistry, Applied
Yilan Wu, Xingzhong Zhang, Dan Qiu, Ying Pei, Yan Li, Bin Li, Shilin Liu
Summary: This study investigated the effect of surface charge density of bacterial cellulose nanofibrils on the rheological characteristics of O/W Pickering emulsions. It was found that higher charge density resulted in increased viscosity and elasticity of the emulsions. pH and ionic strength also influenced the rheological properties, with lower pH leading to higher viscosity and higher pH resulting in lower viscosity.
FOOD HYDROCOLLOIDS
(2021)
Article
Engineering, Chemical
Natan Augusto Vieira Bulgarelli, Jorge Luiz Biazussi, William Monte Verde, Carlos Eduardo Perles, Marcelo Souza de Castro, Antonio Carlos Bannwart
Summary: This paper proposes a new criterion and model to characterize the rheological behavior of water-in-oil emulsions within centrifugal pumps, including slip ratio, Sauter mean diameter, and Slip Relevance number. These parameters can effectively distinguish emulsion flow behaviors and show good agreement with experimental data.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Applied
Enhan Zhang, Yuan Zhao, Zhongyang Ren, Linfan Shi, Wuyin Weng
Summary: The comparative effects of water-in-oil (W/O) and oil-in-water (O/W) emulsions on the physicochemical characteristics of silver carp surimi gels were investigated. It was found that the addition of W/O emulsion decreased breaking force and hardness, increased yellowness value, while the addition of O/W emulsion had no significant effect on these parameters.
Article
Food Science & Technology
Aimin Shi, Jun Wang, Rui Guo, Xinyue Feng, Yanzhen Ge, Hongzhi Liu, Dominic Agyei, Qiang Wang
Summary: Evaluations were conducted on the physical and chemical stability of a W/O/W emulsion containing resveratrol under various conditions, revealing its stability and protective effects for resveratrol under specific parameters.
JOURNAL OF FUNCTIONAL FOODS
(2021)
Article
Chemistry, Applied
Bo-wen Yang, Sheng-yang Ji, Tian Zhao, Zhang-tie Wang, Yan-song Zhang, Qian-nan Pan, Wei-su Huang, Bai-yi Lu
Summary: This study investigated the fabrication of phytosterol-enriched emulsions stabilized by different emulsifiers and evaluated the effect of different interfacial layers on the photooxidation of phytosterols and emulsions. High molecular weight emulsifiers (proteins and their mixtures) exhibited stronger photooxidation stabilities and high viscosity and density of droplet interfacial membrane compared with Tween 20. The stability of PS emulsions that undergo photooxidation was impacted by the inclusion of these emulsifiers.
FOOD HYDROCOLLOIDS
(2023)
Article
Food Science & Technology
Xin Ying, Jiaxing Gao, Jing Lu, Changlu Ma, Jiaping Lv, Benu Adhikari, Bo Wang
Summary: In this study, soy peptide solution was successfully encapsulated in a W-1/O/W-2 double emulsion using PGPR as an effective inner emulsifier. The droplet size and encapsulation efficiency of the peptide solution depended on various factors including the ratio and concentration of phases. The freeze-dried microcapsule powder showed higher encapsulation efficiency compared to spray-dried one, indicating the potential of this double emulsion as a delivery matrix for hydrophilic ingredients.
FOOD RESEARCH INTERNATIONAL
(2021)
Article
Physics, Multidisciplinary
Yongchao Rao, Zehui Liu, Shuli Wang, Lijun Li, Qi Sun
Summary: The development of oil and gas resources has shifted to the deep sea, where hydrate plugging in pipelines under high pressure and low temperatures is a critical issue. The use of swirl flow technology can expand the safe flow range of hydrates and improve the efficiency of hydrate slurry transportation.
Article
Biotechnology & Applied Microbiology
Yeeun Lee, Donghyun Lee, Eunyoung Park, Seok-young Jang, Seo Young Cheon, Seongryeong Han, Heebeom Koo
Summary: The study developed rhamnolipid-coated double emulsion nanoparticles containing doxorubicin and erlotinib for efficient drug delivery to tumor tissue and combination chemotherapy. The nanoparticles showed fast cellular uptake and synergetic tumor cell killing, with high accumulation in tumor tissue and enhanced tumor suppression in mouse models. This study demonstrated the promising potential of double emulsion nanoparticles and rhamnolipid coating for combination therapy.
JOURNAL OF NANOBIOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Shangfei Song, Bohui Shi, Weichao Yu, Lin Ding, Yuchuan Chen, Yifan Yu, Chaoyu Ruan, Yang Liu, Wei Wang, Jing Gong
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Energy & Fuels
Yuchuan Chen, Jing Gong, Bohui Shi, Haiyuan Yao, Yang Liu, Shunkang Fu, Shangfei Song, Xiaofang Lv, Haihao Wu, Xia Lou
Review
Energy & Fuels
Bohui Shi, Shangfei Song, Yuchuan Chen, Xu Duan, Qingyun Liao, Shunkang Fu, Lihao Liu, Jinhao Sui, Junpeng Jia, Haotian Liu, Yumo Zhu, Chenxi Song, Decai Lin, Ting Wang, Junao Wang, Haiyuan Yao, Jing Gong
Summary: This review discusses the significant progress in gas hydrate flow assurance research in China, including hydrate structures, management strategies, development of phase equilibrium models, and kinetics research. Additionally, the current research status and existing problems of hydrate slurry flow are analyzed, indicating significant room for improvement in accurate quantitative calculations and risk assessments.
Article
Energy & Fuels
Qingyun Liao, Bohui Shi, Sha Li, Shangfei Song, Yuchuan Chen, Jinjun Zhang, Haiyuan Yao, Qingping Li, Jing Gong
Summary: This study used molecular dynamics simulations to investigate the impact of wax molecules on methane hydrate formation. The results show that different types and quantities of wax molecules have varying effects on hydrate growth. The addition of wax molecules may promote gas bubble formation and subsequently inhibit hydrate growth.
Article
Mechanics
Sihang Chen, Qi Yang, Wang Li, Shangfei Song, Xueyu Qi, Xu Duan, Bohui Shi, Xiaoping Li, Jing Gong
Summary: This paper proposes a new hydrodynamic model for gas-liquid two-phase flows in undulant pipelines based on the gas tracking method, which predicts flow patterns and obtains pressure gradients by considering various gas phase forms and mass transfer behaviors. Model validation shows acceptable accuracy, and the findings are of practical value for a deeper understanding of gas-liquid two-phase flows in undulant pipelines.
Article
Mechanics
Qi Kang, Shangfei Song, Jiahan Yu, Bohui Shi, Yuchuan Chen, Xiaofang Lv, Yang Liu, Zonghan Bai, Bingyuan Hong, Wei Wang, Jing Gong
Summary: This study simulated the upward multiphase flow of hydrate slurry in a vertical concentric annulus, proposed suitable hydrate slurry hydrodynamic models for different flow regimes, and analyzed the factors affecting flow behaviors.
Article
Energy & Fuels
Hongju Chen, Shunkang Fu, Shuai Chai, Qingyun Liao, Bohui Shi, Jing Gong
Summary: This study established a viscosity model of hydrate slurry based on experiments, incorporating wax content into flow properties and proposing risk management methods to control hydrate blockage. The results indicate the feasibility of this method in deep-water fields with high wax content reservoirs.
Article
Energy & Fuels
Bohui Shi, Yuchuan Chen, Xiaofeng Wang, Shangfei Song, Shunkang Fu, Jianwei Zhou, Yang Liu, Xiaofang Lv, Jing Gong
Summary: Hydrate flow assurance is crucial for the exploitation of natural gas hydrate reservoirs. However, the behaviors of hydrate formation and slurry flow in the presence of micron-sized sand particles are still unclear. This study performed experiments to investigate hydrate formation and slurry flow with micron-sized sand particles and calculated the formation kinetics parameters, derived the viscosity calculation method, and established the flow resistance coefficient calculation method.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Mechanics
Shangfei Song, Di Fan, Yijia Fan, Bing Yan, Bohui Shi, Shengnan Zhang, Xiaofang Lv, Haiyuan Yao, Qingping Li, Jing Gong
Summary: Offshore pipelines are crucial for offshore oil and gas development and are often referred to as the lifeline of the production system. This study focuses on the development of component tracing technologies to predict fluid composition changes in pipeline networks. The proposed algorithm can dynamically track fluid composition and calculate phase exchange amounts in real time.
Article
Chemistry, Multidisciplinary
Shangfei Song, Xuanzhang Liu, Chenxuan Li, Zhe Li, Shijia Zhang, Wei Wu, Bohui Shi, Qi Kang, Haihao Wu, Jing Gong
Summary: In this study, a dynamic simulator for three-phase gravity separators in oil production facilities is proposed. The simulator involves establishing mass conservation and balance equations to calculate various parameters and uses proportional integral controllers to control the separator's levels and pressure through outlet valve openings. The simulator is validated using field data and applied to study the separator's dynamic behavior and the effects of operating conditions on separation efficiency.
Article
Energy & Fuels
Xiaofang Lv, Jiawen Xu, Fan Ye, Wu Long, Chuanshuo Wang, Yang Liu, Qianli Ma, Shidong Zhou, Shangfei Song
Summary: This study investigates the flow characteristics of hydrate slurry and the flow pattern transition in gas-liquid multiphase system. The results show that the flow parameters fluctuate more drastically in the gas-liquid system, indicating a higher risk of pipe plugging. The influence of pressure and dosage on multiphase flow pattern transformation and boundary change conditions is also studied. The study provides theoretical references and technological supports for the safety of multiphase transportation pipelines and deep water production.
Article
Energy & Fuels
Lihao Liu, Bohui Shi, Shangfei Song, Yuchuan Chen, Xinhao Luo, Shijia Zhang, Huirong Huang, Haiyuan Yao, Guangjin Chen, Jing Gong
Summary: The study focuses on the flow assurance of natural gas hydrates, paying attention to the co-deposition mechanism of Micron-sized Sand Particles and natural gas hydrate particles during pipeline transportation. Horizontal high-pressure flow loop experiments are conducted to understand the hydrates and MSPs slurry flow law and co-deposition mechanism. The findings reveal the stages of the hydrate-MSPs co-deposition process in the salt-sand coexistence system and provide insights into the solid deposition process. The influence of sand particle concentration and initial flow velocity on the co-deposition process is explored, and the interaction between particles in the deposition process is revealed by Particle Vision and Measurement.
Article
Chemistry, Multidisciplinary
Yang Liu, Chengxuan Wu, Xiaofang Lv, Xinyi Xu, Qianli Ma, Jiawei Meng, Shidong Zhou, Bohui Shi, Shangfei Song, Jing Gong
Summary: In the exploitation of deep-sea oil and gas resources, the presence of hydrates and wax can lead to significant increase in the viscosity and plugging tendency of multiphase flow systems. This study investigates the evolution of hydrate particles and their agglomeration characteristics in the presence or absence of wax crystals. The results show that the shell of hydrate particles changes from solid and rough to smooth and moist during hydrate growth on wax-free water droplets. Furthermore, the cohesive force between particles is found to increase with temperature and contact time. The presence of wax alters the shell structure of hydrate particles and leads to a larger liquid bridge between particles, increasing the cohesive force.
Article
Chemistry, Multidisciplinary
Xiaofang Lv, Yang Liu, Shidong Zhou, Bohui Shi, Kele Yan
Summary: The study investigates the decomposition mechanism of hydrate slurry and proposes that desorption of gas from the surface of decomposed particles may be the main cause of particle coalescence. A comprehensive kinetic model considering influencing factors such as intrinsic kinetics, heat, and mass transfer is proposed, using fugacity difference as the driving force for hydrate decomposition. The model integrates heat and mass transfer effects and can describe trends in gas release and dissociation rate in experimental flow systems.
