Article
Green & Sustainable Science & Technology
Rachel Sonia Lourdes, Sze Yin Cheng, Kit Wayne Chew, Zengling Ma, Pau Loke Show
Summary: The rise in petroleum demand has become a problem, and enhanced oil recovery (EOR) methods can be a solution to this problem and maximize the usage of oil reservoirs. Microbial enhanced oil recovery (MEOR) is a promising technique that is currently not widely discussed. This review paper provides an overview of MEOR technology, including different microbial products, the mechanism of oil recovery, and the contribution of MEOR to the recovery of residual oils.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Qi Liu, Jianjie Niu, Yang Yu, Chenyi Wang, Shijian Lu, Shengwei Zhang, Jing Lv, Bo Peng
Summary: Microbial enhanced oil recovery (MEOR) is an important method that utilizes microbes and their products to recover crude oil from reservoirs, with biosurfactants playing a crucial role due to their optimal interfacial properties. An optimized biosurfactant produced by Bacillus licheniformis L20 has been characterized as a series of lipopeptides, and has demonstrated promising potential for ex-situ MEOR in harsh reservoir conditions through wettability alteration and core flooding experiments.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Multidisciplinary Sciences
Luciana G. P. Sodre, Laercio L. Martins, Lorraine Louise G. C. De Araujo, Danielle M. M. Franco, Boniek G. Vaz, Wanderson Romao, Valeria M. Merzel, Georgiana F. da Cruz
Summary: This study investigates the effects of biosurfactants and brine injection on the recovered petroleum composition and geochemical interpretation. Biosurfactants mainly impact low molecular weight aromatic compounds, while saturated compounds are less affected in terms of geochemical parameters.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Green & Sustainable Science & Technology
Ranjan Pandey, Bhaskar Krishnamurthy, Harminder Pal Singh, Daizy Rani Batish
Summary: Rapid industrialization and anthropogenic activities have contributed to increased petroleum hydrocarbon demand and pollution. This study focused on the isolation and identification of a novel bacterial strain, A. hydrophila RP1, which produces a glycolipopeptide biosurfactant with immense potential for applications in bioremediation and enhanced oil recovery (EOR). The biosurfactant exhibited stable properties and effectively emulsified a range of hydrocarbons, leading to additional oil recovery and degradation of diesel and n-hexadecane.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Multidisciplinary Sciences
Bo Wu, Jianlong Xiu, Li Yu, Lixin Huang, Lina Yi, Yuandong Ma
Summary: This paper describes the recent development of MEOR technology and proposes possible methods to reduce its cost. It also suggests combining genetic engineering technology and microbial hybrid culture technology as a future research direction.
Review
Biotechnology & Applied Microbiology
Cong-Yu Ke, Rui Sun, Ming-Xia Wei, Xiu-Ni Yuan, Wu-Juan Sun, Si-Chang Wang, Qun-Zheng Zhang, Xun-Li Zhang
Summary: This review provides an overview of microbial enhanced oil recovery (MEOR) technology, including its principle, characteristics, classification, recent development, and applications. It summarizes the microbial strains, nutrient systems, and actual effects used in MEOR based on numerous field trials conducted worldwide. The article also discusses the challenges and future prospects for industrial application of MEOR, highlighting the need to overcome uncertain factors hindering its industrialization.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2023)
Article
Energy & Fuels
Hengameh Haddad, Ali Reza Khaz'ali, Arjomand Mehrabani-Zeinabad, Mohammadhadi Jazini
Summary: This study evaluated the performance of Bacillus persicus as a microbial enhanced oil recovery (MEOR) agent in different types of carbonate reservoirs. The experiments showed that the microbial solution can recover 12.5% of the original oil in place as an imbibing fluid. Bacillus persicus can alter the wettability of carbonate surfaces, produce biosurfactants, reduce oil viscosity, and recover a significant percentage of the original oil in place. These results demonstrate the potential of MEOR plans targeting oil-wet/mixed-wet fractured and non-fractured carbonate reservoirs.
Article
Polymer Science
Bashirul Haq
Summary: The study investigates the microbial enhanced oil recovery process in green enhanced oil recovery technology, which effectively increases oil production by altering properties like interfacial tension and capillary force. The experimental results demonstrate that acetone and butanone green SP formulations have significant oil recovery effects in sandstone reservoirs.
Article
Energy & Fuels
E. Gonzalez-Toril, A. Permanyer, J. R. Gallego, G. Marquez, E. Lorenzo, A. Aguilera
Summary: A diverse community of bacteria and archaea with hydrocarbon-degrading activity was found in the Riutort oil shale mine environment. The Riutort consortium exhibited a notable capacity for bioremediation of petroleum-polluted soil and microbial enhanced oil recovery processes.
Article
Energy & Fuels
Qi Liu, Jianjie Niu, Yajie Liu, Linkun Li, Jing Lv
Summary: This study investigated the influence of hydrocarbon carbon sources on biosurfactant production by Bacillus licheniformis L20, and found that the LB/MSS-K medium yielded the highest concentration of biosurfactant. It was also revealed that the anionic surfactant/biosurfactant mixed system has potential application prospects in ex-situ microbial enhanced oil recovery.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Engineering, Chemical
Hui Xiao, Zulhelmi Amir, Mohd Usman Mohd Junaidi
Summary: This paper provides a comprehensive update on Microbial Enhanced Oil Recovery (MEOR), including microbial products, mechanisms, and merits and demerits. It thoroughly demonstrates the effect of displacement fluid and conditions on microorganisms to understand their influencing mechanism. The paper also discusses the impact of chemicals on microorganisms' properties, metabolism, and oil displacement mechanisms, highlighting the lack of research in this area. Lastly, field trials and the development of microbial consortium are examined, confirming the credibility of MEOR after polymer flooding and providing a scientific basis for improving MEOR theory.
Article
Energy & Fuels
Hamed Aboelkhair, Pedro Diaz, Attia Attia
Summary: This study investigated the production of biosurfactants by indigenous bacteria isolated from Egyptian oil fields, focusing on optimizing surface activity through different nutrient media and examining growth and surface activity under varying conditions. Bacillus spp was selected for its potential in MEOR, showing significant reduction in surface tension and interfacial tension. The study revealed Bacillus spp's ability to produce effective biosurfactants in a new proposed nutrient medium H.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Polymer Science
Bashirul Haq
Summary: Green enhanced oil recovery (GEOR) is an environmentally friendly technique that improves oil recovery efficiency by injecting specific green fluids to increase residual oil production. Studies have shown that certain green SP formulations can significantly enhance residual oil production in carbonate cores, such as a mixture of APG, XG, and butanone.
Article
Engineering, Chemical
Aaliye Ghaffari, Pegah Sarafzadeh, Sadegh Hassanpour, Payam Setoodeh, Ali Zeinolabedini Hezave, Mohammad Reza Rahimpour
Summary: Microbial enhanced oil recovery (MEOR) has gained increasing attention in the past two decades. This study investigates the effects of pressure, temperature, and biosurfactant concentration on ex-situ MEOR using Rhodococcus erythropolis. The results show that increasing biosurfactant concentration reduces the interfacial tension of formation water/crude oil, and that 1000 ppm biosurfactant concentration under a pressure of 137.9 bar is the optimal condition for the experiments.
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Environmental Studies
Erick de Aquino Santos, Manoel Jeronimo Moreira Cruz, Eddy Jose Francisco de Oliveira, Olivia Maria Cordeiro de Oliveira, Antonio Fernando de Souza Queiroz, Sarah Adriana Rocha Soares, Danusia Ferreira Lima
Summary: The purpose of this study was to propose sustainable solutions for advanced oil recovery by evaluating the ability of the bacterium Pseudomonas sp. in the biotransformation of alkanes. The results showed that the bacterium exhibited better tolerance at a temperature of 40 degrees C and there was no significant change for the different salinities. The highest oil recovery rate was observed at time 6, reaching 54%.
REVISTA ELETRONICA EM GESTAO EDUCACAO E TECNOLOGIA AMBIENTAL
(2022)
Article
Biophysics
Cristina Potrich, Anna Pedrotti, Cecilia Pederzolli, Lorenzo Lunelli
Summary: This study developed different functional surfaces for capturing exosomes and verified their effectiveness through experiments. Among them, the negatively-charged surface performed the best, capturing a large number of exosomes and successfully analyzing their biomarkers.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Brojendra Nath Saren, Srushti Mahajan, Mayur Aalhate, Rahul Kumar, Essha Chatterjee, Indrani Maji, Ujala Gupta, Santosh Kumar Guru, Pankaj Kumar Singh
Summary: This study developed P-selectin-targeted dasatinib nanoparticles coated with chitosan and fucoidan (DST-CH-FUC-NPs), which showed sustained release, reduced hemolytic potential, increased cytotoxicity and cellular uptake compared to free dasatinib. These nanoparticles also demonstrated enhanced ROS production, mitochondrial membrane potential damage, apoptosis induction, cell migration inhibition, and disruption of lysosomal membrane integrity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Weiping Deng, Xiaohui Li, Ya Li, Zhongbing Huang, Yulin Wang, Ning Mu, Juan Wang, Tunan Chen, Ximing Pu, Guangfu Yin, Hua Feng
Summary: This study demonstrates the importance of chirality in nerve repair by constructing a GO-phenylalanine derivative hydrogel system. In vivo experiments show that the dextro group significantly improves functional recovery and histological restoration in rat sciatic nerve repair models. The doped GO promotes angiogenesis and myelination. These results suggest that chirality plays a crucial role in promoting nerve regeneration.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Xiaoyan Wang, Jin Gao, Yu Gao, Linlin Zhang, Congchao Xu, Qintong Li, Lin Li, Jianliang Xue
Summary: In this study, a highly effective surfactant producer strain, Bacillus Cereus GX7, was isolated from the oil tank bottom sludge of Shengli Oil Field in China. The biosurfactant produced by GX7 was identified as surfactin, a lipopeptide surfactant, through TLC, FT-IR, and LC-MS/MS analysis. The fermentation process of GX7 was optimized using single-factor experiments, focusing on the composition of fermentation medium and fermentation conditions. Glucose and peptone were found to be the best carbon and nitrogen sources, and the optimum temperature, inoculum amount, pH, rotation speed, and fermentation time for the strain were determined to be 30°C, 1%, 7.5, 150 rpm, and 48 h, respectively. After optimization, the surface tension and emulsification index of the fermentation broth were 26.84 mN/m and 57.84%, respectively. Furthermore, the biosurfactant produced by GX7 demonstrated good stability over a wide range of temperature, pH, and salt concentration.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Rodney Marcelo do Nascimento, Christine Grauby-Heywang, Houssem Kahli, Nesrine Debez, Laure Beven, Ivan Helmuth Bechtold, Touria Cohen Bouhacina
Summary: This article presents a theoretical model based on thermodynamic rules to assess the early stages of bacterial biofilm formation on different material surfaces. By utilizing morphological characteristics of bacteria and Atomic Force Microscopy images, the model generates a dataset of energetically minimized states, which can be correlated with bacterial adhesion states.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Filipa A. L. S. Silva, Licinia Timochenco, Raquel Costa-Almeida, Jose Ramiro Fernandes, Susana G. Santos, Fernao D. Magalhaes, Artur M. Pinto
Summary: The study demonstrates that by photoreducing nanosized graphene oxide using ultraviolet radiation, nanometric particles with high light-to-heat conversion efficiency and water stability can be obtained. These nanomaterials exhibit high absorption in the near-infrared region and show no cytotoxicity towards human cells, indicating their potential for safe therapy.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
D. Costa, V. De Matteis, F. Treso, G. Montani, M. Martino, R. Rinaldi, M. Corrado, M. Cascione
Summary: This review primarily discusses the relationship between contact lens discomfort (CLD) and the surface properties of contact lenses (CLs), specifically the coefficient of friction (CoF). The review emphasizes the importance of introducing a standardized protocol for measuring CoF and calls for a more precise evaluation of the relationship between surface properties and comfort in CLs users.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Debdip Brahma, Tamal Sarkar, Rupal Kaushik, Akshay Narayan Sarangi, Amar Nath Gupta
Summary: This in-vitro study evaluates the effect of reactive oxygen species (ROS) on the structural rearrangement of elastin. The results show that oxidative stress leads to a decrease in protein size and changes in secondary structure, potentially promoting protein aggregation. This study is important for therapeutics aiming to prevent elastin degradation and aging.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Xin Yang, Qiang Wang, Chaoxi Yan, Degang Huang, Yinchang Zhang, Huazheng He, Shouliang Xiong, Congming Li, Pingbo Chen, Tingjun Ye, Dan Hu, Lei Wang
Summary: This study presents a practical and effective strategy to improve osseointegration in patients with osteoporosis. By coating titanium implants with polydopamine followed by strontium modification, the bi-functional implants promote bone regeneration and immune regulation. The results show good biocompatibility, sustained release of strontium ions, and stable osseointegration between bone tissues and implants.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Sengwang Fu, Jianping Zhu, Zhijun Jiang, Yue Cao, Yufei Chen, Lihao Zhang, Sunlong Li, Weipeng Lu, Chengbin Miao, Qing He, Qi Li, Weixing Zhang, Lehao Ren, Yachun Li, Hongchao Shi, Cihui Liu
Summary: Effective management of biofluids is crucial for in vivo surgical interventions. Recent advances include self-sealing needles, drug-eluting stents, and shear-thinning hydrogels. However, complications associated with intestinal mucosal injury and secondary damage still persist. In this study, researchers developed an interpenetrating Janus wettability stent coating that enables unidirectional draining of excessive biofluid. They also demonstrated directional biofluid movement using a self-pumping dressing with potential applications in biofluid collection and disease diagnosis through metal ion detection. This integrated system presents an opportunity for designing wound dressings with effective biofluid management and metal ion detection capabilities.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Maryam Hassani, Mojtaba Kamankesh, Mazda Rad-Malekshahi, Kobra Rostamizadeh, Farhad Rezaee, Ismaeil Haririan, Seyed Mojtaba Daghighi
Summary: Bacterial adhesion and biofilm formation on the surface of biomaterial implants is a critical problem, and a polymer brush coating with antiadhesive and antimicrobial properties has proven to be highly effective in resolving this issue.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Huaihong Zhang, Na Liu, Yuting Zhang, Hui Cang, Zhaosheng Cai, Ziqun Huang, Jun Li
Summary: A functionalized cationic polymer, CR-PQAC, was designed and synthesized for photothermal enhanced antimicrobial therapy. The CR-PQAC nanoparticles exhibited significant antibacterial activity and low cytotoxicity against mammalian cells.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Ipsita Sahu, Priyadarshi Chakraborty
Summary: Peptide nanotechnology bridges the gap between materials and biological worlds by utilizing self-assembly of short-peptide building blocks. Hydrogels engineered from these short peptides show great potential in biomedical applications, but their weak mechanical properties and limited functional diversity need to be addressed. Nanoengineering the networks of these hydrogels by incorporating small molecules, polymers, and inorganic/carbon nanomaterials can enhance their mechanical properties and expand their functional diversity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Hao Wei, Yajun Gu, Ao Li, Panpan Song, Dingding Liu, Feihu Sun, Xiaofeng Ma, Xiaoyun Qian
Summary: In this study, a stable three-dimensional conductive hydrogel was prepared by cross-linking MXenes to Matrigel hydrogel. The conductive hydrogel promotes the proliferation and differentiation of NSCs, providing new strategies for neural tissue engineering.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Yue Zhong, Xiaoli Ge, Juan Zhang, Qun Wei, Feng Wang, Yongke Zhong
Summary: The effect of oxygenic groups on the hemocompatibility of activated carbon was studied through liquid-phase oxidation and subsequent heat treatment. Results showed that the presence of oxygenic groups improved hemocompatibility, while their removal decreased it.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)