Article
Engineering, Environmental
Chanjuan Liu, Zhen Long, Yong He, Xuebing Zhou, Deqing Liang
Summary: This study investigates the growth and storage performance of CO2 hydrates under different conditions, and finds that the water film on silica gel particles is the main factor affecting gas storage efficiency. Silica gels with 30% water saturation can achieve the highest CO2 storage capacity. In addition, it is found that SDS can increase the CO2 storage volume ratio under high water saturation and reduce the volume ratio decay in repeated tests.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Yingmei Wang, Aili Niu, Wenze Jiao, Ji Chen, Peng Zhang, Jinping Li
Summary: Carbon dioxide hydrate formation rate is improved by using different accelerator systems. The combination of nanographite-TBAB and SDS-TBAB shows better performance in reducing the nucleation time. TBAB shows the best nucleation amount, formation rate, and conversion rate among the single acceleration systems.
Article
Energy & Fuels
Jyoti Shanker Pandey, Charilaos Karantonidis, Qian Ouyang, Nicolas von Solms
Summary: CH4/CO2 mixed hydrates can be dissociated effectively using the multistep cyclic depressurization method, leading to improved CH4 recovery below the stability pressure of CH4 hydrate. The study also highlights the impact of chemicals in the aqueous phase and reservoir temperature on recovery and storage yield. Additionally, the morphology study demonstrates the expansion of hydrate volume during cyclic depressurization, confirming hydrate reformation from released water from dissociation.
Article
Energy & Fuels
Lanyun Wang, Yuan Yang, Yan Wang, Yongliang Xu, Yao Li, Jianping Wei, Xiaodong Feng, Kun Zhang
Summary: The slow formation rate and low storage capacity of gas hydrates, as well as the harsh conditions and contaminating promoters, pose major challenges to the application of carbon capture and storage (CCS) technology based on hydrate formation. In this study, three types of graphene nanoparticles (nonfunctionalized graphene, graphene oxide, and amino graphene) were tested as additives to accelerate CO2 and CH4 hydrate formation. The results showed that nonfunctionalized graphene promoted the thermodynamics of CO2 hydrate formation, while graphene oxide and amino graphene had no effect or even inhibited the formation. However, graphene oxide and amino graphene effectively enhanced gas consumption. Overall, nonfunctionalized graphene shortened the induction time, while graphene oxide and amino graphene showed potential as additives to improve gas consumption. The presence of oxidized and amine groups was found to inhibit gas hydrate nucleation.
Article
Energy & Fuels
Meku Maruyama, Shun Kao, Hitoshi Kiyokawa, Satoshi Takeya, Ryo Ohmura
Summary: In this study, clathrate-hydrate-based continuous CO2 capture was experimentally investigated, and it was found that the CO2 concentration rate and recovery ratio were lower compared to pre-combustion systems. However, it was revealed that improving the geometry of mixing impellers could enhance the CO2 recovery ratio for continuous operation.
Article
Engineering, Environmental
Mohd Hafiz Abu Hassan, Farooq Sher, Saba Sehar, Tahir Rasheed, Ayesha Zafar, Jasmina Sulejmanovic, Usman Ali, Tazien Rashid
Summary: Gas hydrate formation is considered a new technology to reduce the impact of greenhouse gases, specifically the increasing CO2 concentration in the atmosphere. Experimental studies have shown that different sample preparation procedures, stirring speed, and temperature all play a role in the rate of CO2 hydrate formation. Promoters combination has also been found to increase the conversion of water to hydrate over longer experimental durations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Xiao-Yan Deng, Ying Yang, Dong-Liang Zhong, Xi-Yue Li, Bin-Bin Ge, Jin Yan
Summary: This study investigates the morphology and kinetics of CO2 hydrate formation in the presence of sodium dodecyl sulfate (SDS). It was found that the growth of CO2 hydrate above the gas-liquid interface became stronger with higher SDS concentration, indicating an enhanced promoting effect of SDS on CO2 hydrate formation. The highest efficiency for CO2 hydrate formation was achieved at 1500 and 3000 ppm of SDS, showing potential for improving hydrate-based CO2 capture technology in the future.
Article
Energy & Fuels
Jia Liu, Jing Wang, Ti Dong, Deqing Liang
Summary: The formation of wax crystals and hydrates in deep-sea crude oil can affect the nucleation, growth, aggregation, and crystal structure of hydrates. Specifically, wax crystals inhibit hydrate formation, while hydrate formation reduces wax crystal aggregation, improving the flow characteristics of the hydrate slurry. Wax has no effect on the crystal structure of CH4 hydrate but impacts the distribution of the gas in cavities.
Article
Chemistry, Physical
Alberto Maria Gambelli, Giulia Stornelli, Andrea Di Schino, Federico Rossi
Summary: The study found that the addition of CuSn12 alloy powder significantly promoted the hydrate formation and dissociation processes, with the pure quartz porous medium acting as an inhibitor for CO2 hydrate. Different concentrations of CuSn12 powder added in different conditions affected the formation and dissociation processes of hydrates.
Article
Energy & Fuels
Ngoc N. Nguyen, Vinh T. La, Chinh D. Huynh, Anh Nguyen
Summary: Carbon capture and storage (CCS) is crucial for reducing CO2 emissions and achieving climate change targets. Hydrate-based carbon capture (HBCC) is a promising and potentially competitive method, but slow kinetics and limited industrial experience present challenges for deployment.
Article
Engineering, Environmental
Changrui Shi, Huiquan Liu, Lunxiang Zhang, Mingjun Yang, Yongchen Song, Jiafei Zhao, Zheng Ling
Summary: Sluggish formation kinetics is a challenge for the practical application of gas hydrate-based technologies. Carbon monoliths with controlled surface functional groups enhance the nucleating ability of methane hydrates. Carbonyl oxygen is identified as the most effective functional group in reducing induction time and enhancing formation kinetics. The turned hydrogen bonds near the CBCM surface contribute to the enhanced formation kinetics. Optimized carbonyl oxygen in CBCM significantly improves methane hydrate formation kinetics and storage capacity with outstanding cycle stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Iqbal Ahmed, Omar Bamaga, Mohammed Hussain Albeirutty, Hani Abulkhair, Abdulmohsen Alsaiari, Hussam Organji, Praveen Linga
Summary: The kinetics and morphology of methane gas clathrate hydrate formation were studied under low pressure, temperature, and low stirring speeds. The use of low stirring mode (LSM) resulted in shorter formation time, enhanced stability of the hydrate, and improved diffusion rate of methane within the solvent phases. Four distinct morphological characteristics of the hydrate were observed under LSM conditions.
Article
Engineering, Environmental
Chun-Gang Xu, Wei Zhang, Hao-Yang Li, Chang-Wen Xiao, Xiao-Sen Li
Summary: This study combines macro experimental investigation, simulation calculation, and microscopic analysis to study the process of hydrate formation and the effects of gas molecules on hydrate nucleation. The results propose a more efficient hydrate formation method and provide directions for solving the key bottleneck of hydrate technology.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Sotirios Nik Longinos, Mahmut Parlaktuna
Summary: The study found that under different impeller and baffle combinations, RT experiments performed better in terms of hydrate formation rate, while PBTU experiments showed higher hydrate productivity. In general, RT experiments consumed more energy compared to PBTU experiments.
Article
Engineering, Chemical
Tatyana P. Adamova, Sergey S. Skiba, Andrey Yu. Manakov, Sergey Y. Misyura Kutateladze
Summary: It is found that the growth rate of carbon dioxide hydrate film is 3.5 times lower at the water-oil interface compared to the water-gas interface. This may be due to the mechanical resistance of the oil components adsorbed on the interface. The growth rate of the film also depends on the experimental procedure and the initial concentrations of carbon dioxide in the aqueous solutions.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Jie Yi, Dong-Liang Zhong, Jin Yan, Yi-Yu Lu
Article
Crystallography
Zheng Li, Dong-Liang Zhong, Wei-Yan Zheng, Jin Yan, Yi-Yu Lu, Da-Tong Yi
JOURNAL OF CRYSTAL GROWTH
(2019)
Article
Thermodynamics
Jin Yan, Yi-Yu Lu, Dong-Liang Zhong, Zhen-Lin Zou, Jian-Bo Li
Article
Thermodynamics
Yi-Yu Lu, Bin-Bin Ge, Dong-Liang Zhong
Article
Energy & Fuels
Jian-Bo Li, Dong-Liang Zhong, Jin Yan
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Review
Energy & Fuels
Xi-Yue Li, Bin-Bin Ge, Jin Yan, Yi-Yu Lu, Dong-Liang Zhong, Peter Englezos, Bao-Yong Zhang
Summary: The consumption of natural gas is vital for optimizing China's energy structure towards reduced CO2 emissions. Coalbed methane is recognized as a significant energy resource to supplement conventional fossil fuels. The hydrate-based gas separation technology has shown promise for purifying low-concentration coalbed methane, but challenges remain in achieving milder pressure conditions and enhancing hydrate formation rates. Further research is needed to bridge the gap between gas separation science and technology.
Article
Energy & Fuels
Xiao-Yan Deng, Ying Yang, Dong-Liang Zhong, Xi-Yue Li, Bin-Bin Ge, Jin Yan
Summary: This study investigates the morphology and kinetics of CO2 hydrate formation in the presence of sodium dodecyl sulfate (SDS). It was found that the growth of CO2 hydrate above the gas-liquid interface became stronger with higher SDS concentration, indicating an enhanced promoting effect of SDS on CO2 hydrate formation. The highest efficiency for CO2 hydrate formation was achieved at 1500 and 3000 ppm of SDS, showing potential for improving hydrate-based CO2 capture technology in the future.
Article
Thermodynamics
Feng-Mei Xie, Xi-Yue Li, Dong-Liang Zhong, Peter Englezos, Guo-Xiang Lu
Summary: This study demonstrates the phase behavior of TBPB and CO2 hydrates at different concentrations, with the addition of surfactant affecting phase equilibrium and CO2 consumption during formation. Further research should focus on increasing the CO2 storage capacity of TBPB semiclathrate hydrate.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Engineering, Chemical
Wen-Xin Dai, Xi-Yue Li, Dong-Liang Zhong, Jin Yan, Kai Dong, Xiao-Yan Deng
Summary: This study investigates the use of a fixed bed of activated carbons to capture CO2 at hydrate formation conditions. The results show that an adsorption-hydration hybrid process in wet activated carbons outperforms single adsorption process in dry activated carbons for CO2 capture. The optimal water saturation value for gas consumption is found to be 40%.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Liang-Meng Wu, Xi-Yue Li, Feng-Mei Xie, Dong-Liang Zhong, Peter Englezos, Jin Yan
Summary: This study presents a review of kinetic studies on the enhancement of hydrate-based CO2 capture using additives, porous media, nanofluids, etc. Future research directions are also discussed. The aim of this review is to aid understanding of the mechanism of the hydrate-based CO2 capture process and provide references for its industrial applications in the near future.
Article
Engineering, Chemical
Bin-Bin Ge, Jin Yan, Dong-Liang Zhong, Yi-Yu Lu, Xi-Yue Li
Summary: CO2 capture was experimentally investigated by forming TBAB semiclathrate in a new system of TBAB + graphite nanofluids. The system of TBAB + graphite nanofluids showed preference for CO2 capture compared to TBAB solution and TBAB + SDS solution. The optimal concentration of 0.2 wt.% graphite nanoparticles was found to enhance hydrate growth in TBAB + graphite nanofluids.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Kai Dong, Wen-Xin Dai, Dong-Liang Zhong, Jin Yan, Feng-Mei Xie, Han-Sen Sun, Man Wang
Summary: This study investigates the effects of the surfactant cocamidopropyl betaine (CAB) on coal structures and CH4 adsorption characteristics. The results show that the hydrophilicity of coal samples is enhanced after being treated with CAB solutions, increasing the number of hydroxyl functional groups and reducing the amount of adsorbed CH4. Additionally, the pore volume of coal samples increases and the CBM migration rate improves. A concentration of 0.008 mol/L CAB is determined to be the optimal concentration for increasing CBM extraction efficiency.
Article
Engineering, Chemical
Xi-Yue Li, Jin Yan, Dong-Liang Zhong, Shi-Jian Lu, Bin-Bin Ge
Summary: This study investigated the formation of tetra-n-butyl ammonium bromide (TBAB) semiclathrate hydrate for CO2 capture through experiments and in situ Raman spectroscopy. The impacts of TBAB concentration and operating temperature on CO2 incorporation into TBAB semiclathrates were analyzed. The results showed that the structure transition of TBAB semiclathrates from type A to type B occurred in the presence of CO2, resulting in increased CO2 consumption. The TBAB semiclathrate formed at 2.57 mol % TBAB and 282.15 K was found to be a suitable system for CO2 capture.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Energy & Fuels
Bin-Bin Ge, Dong-Liang Zhong, Yi-Yu Lu, Xi-Yue Li
Summary: The effect of THF concentration on the formation of THF-CH4 hydrate was investigated. It was found that THF concentration is a key factor affecting the growth of hydrates, and increasing THF concentration improves mass transfer. In situ Raman spectroscopy observation showed that CH4 and THF molecules occupy the small and large cavities of the sII hydrate, respectively. Forming two types of hydrates at a low concentration can increase gas storage capacity.
Proceedings Paper
Energy & Fuels
Bin-Bin Ge, Dong-Liang Zhong, Yi-Yu Lu
INNOVATIVE SOLUTIONS FOR ENERGY TRANSITIONS
(2019)