Article
Biophysics
Jyoti Sharma, Atya Kapley, Durai Sundar, Preeti Srivastava
Summary: In this study, a biosurfactant-producing bacterium Franconibacter sp. IITDAS19 was isolated from crude oil contaminated soil and characterized. The biosurfactant was identified as a glycolipid and showed high efficacy towards different types of hydrocarbons. It can be used for enhanced oil recovery.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Biology
Ebru Uyar, Tuba Avci
Summary: A total of 71 bacteria were isolated from crude oil-contaminated soil samples. Thirteen isolates were selected for further molecular identification, and they were identified as belonging to Pseudomonas, Acinetobacter, Bacillus, and Priestia genera. Pseudomonas aeruginosa strain TBA-B58 showed the highest enzymatic activity for lipolytic and esterolytic activities, while the glycolipid-type biosurfactant from this strain achieved the highest reduction in surface tension. Acinetobacter baumanni strains TBA-B45 and TBA-B56 demonstrated notable emulsification activity against toluene and benzene. These biosurfactant-producing strains have potential applications in the bioremediation of crude oil hydrocarbons.
Article
Microbiology
Ebru Uyar, Ozgur Saglam
Summary: A total of 107 bacterial strains were isolated from used motor oil contaminated soil samples from auto-repair shops. The potential biosurfactant producers were identified as Proteus mirabilis, Klebsiella pneumoniae, and Micrococcus sp., showing remarkable emulsification indexes and surface tension reduction capacity. The biosurfactants from these promising bacterial strains have potential applications in microorganism-based biodegradation processes of hydrocarbons causing detrimental effects on the environment.
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Siti Shilatul Najwa Sharuddin, Siti Rozaimah Sheikh Abdullah, Hassimi Abu Hasan, Ahmad Razi Othman, Nur 'Izzati Ismail
Summary: This study isolated multifunctional rhizobacteria from different sources, such as rhizosphere soils and crude oil sludge, and found that these bacteria can efficiently degrade hydrocarbons while producing biosurfactants. The presence of biosurfactants was confirmed by SEM images, showing the formation of exopolymers that enhance the degradation process.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Chemical
Tiago P. Silva, Susana M. Paixao, Joao Tavares, Catia Gil, Cristiana A. Torres, Filomena Freitas, Luis Alves
Summary: This study evaluated the potential of Gordonia alkanivorans strain 1B as a producer of biosurfactants and bioemulsifiers (BS/BE), and performed initial characterization of the compounds produced. The results demonstrated that strain 1B was capable of synthesizing BS/BE compounds in various hydrophobic phases, without the need for a hydrophobic inducer. The produced compounds exhibited excellent surfactant and emulsifying properties, outperforming many commercial alternatives.
Article
Microbiology
L. Nageshwar, J. Parameshwar, Pattanathu K. S. M. Rahman, Ibrahim M. Banat, Bee Hameeda
Summary: In this study, 20 lactic acid bacteria were isolated from different fruit juices, milk, and milk products. Among them, Lactococcus lactis strain LNH70 was selected for further investigation. The strain exhibited preliminary probiotic characteristics and produced a biosurfactant identified as xylolipid. The xylolipid biosurfactant showed anti-adhesion activity against food borne pathogens and had antioxidative properties. It also showed potential as a food preservative.
BRAZILIAN JOURNAL OF MICROBIOLOGY
(2022)
Article
Energy & Fuels
Xiaoxiao Li, Xiang'an Yue, Zhen Wang, Rongjie Yan, Yabing Guo
Summary: The study revealed that increasing flow rate can facilitate oil film detachment, but the effectiveness is limited by the action area and displacement efficiency. Different surfactants with varying interfacial tensions and emulsification behaviors were found to promote the dislodging of the oil film.
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
Environmental Sciences
Zulfiqar Ahmad, Xuezhi Zhang, Muhammad Imran, Hua Zhong, Shaista Andleeb, Rabail Zulekha, Guansheng Liu, Iftikhar Ahmad, Frederic Coulon
Summary: The study found that the biosurfactant produced by Klebsiella sp. KOD36 showed stability and efficacy under extreme conditions, enhancing the solubilization and degradation of phenanthrene in various environmental matrices. The biosurfactant displayed high functional stability and performance under extreme conditions, demonstrating great potential for remediation applications in harsh environmental conditions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Energy & Fuels
Taher Al-Ghailani, Yahya M. Al-Wahaibi, Sanket J. Joshi, Saif N. Al-Bahry, Abdulkadir E. Elshafie, Ali S. Al-Bemani
Summary: The application of Alkaline-Biosurfactant-Biopolymer using surfactin and schizophyllan for enhanced oil recovery from Omani reservoir cores and Berea sandstone cores showed promising results, achieving additional oil recovery rates of 14% and 32% respectively. This study explored the potential for EOR studies using native Omani reservoir cores and investigated the impact of various chemicals and biosurfactants on biopolymer performance.
Article
Multidisciplinary Sciences
Ferdausi Ali, Sharup Das, Tanim Jabid Hossain, Sumaiya Islam Chowdhury, Subrina Akter Zedny, Tuhin Das, Mohammad Nazmul Ahmed Chowdhury, Mohammad Seraj Uddin
Summary: Oil pollution is a growing environmental concern, and the use of microbial surfactants for oil remediation has become necessary due to their effectiveness and eco-friendly nature. This study isolated and characterized bacteria producing potent biosurfactants from oil-contaminated soil. The biosurfactants showed stable emulsification activity, antimicrobial properties, and efficient degradation of various oils.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Energy & Fuels
Paria Safari, Morteza Hosseini, Mostafa Lashkarbolooki, Monireh Ghorbani, Ghasem Najafpour Darzi
Summary: In this study, rice bran oil extracted from agricultural waste was used as a renewable carbon source for biosurfactant production. The biosurfactant showed good performance in reducing surface tension and exhibited potential antifungal properties. It has the potential to be a bio-adjuvant and a replacement for chemical surfactants in addressing oil spills and environmental decontamination processes.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Environmental Sciences
S. Samadi, H. Amani, G. D. Najafpour, H. Kariminezhad, A. Banaei
Summary: Recently, the high cost of large-scale production has hindered the commercial use of biosurfactants for oil spill clean-up. To overcome this challenge, this research focuses on optimizing process parameters for maximum productivity of rhamnolipid in small-scale production. The study investigated the impact of various factors, such as incubation time, sunflower oil, and nitrogen source, on rhamnolipid production. Under the optimum conditions, a higher production yield was achieved compared to previous studies. The performance of the rhamnolipid was confirmed through various experiments, demonstrating its potential for efficient oil spill clean-up.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yu Li, Huiqing Liu, Qing Wang, Xiaohu Dong, Xin Chen
Summary: The new polymer viscosity reducer enhances heavy oil reservoir development through five microscopic processes in a visual filling model, influencing the interfacial properties of oil, water, and rock, improving flow efficiency, and increasing oil recovery rates.
Article
Chemistry, Multidisciplinary
Qiuxia Wang, Hongwen Zhang, Yugui Han, Yu Cui, Xiaodong Han
Summary: By determining the optimal formation of the emulsification system, the study investigated the relationship between the HLB value of oil and emulsion stabilization. The properties of the emulsion, such as particle size, stability, interfacial tension, and zeta potential, were tested using various instruments. The experimental results showed that the optimal emulsification ratio was Tween 80:Span 80 = 5:5. Additionally, when the HLB value of the emulsion system approached that of the oil, the emulsion exhibited the best stability. This study provides new insights into effectively adjusting emulsion stability.
Review
Thermodynamics
Ranjana Chowdhury, Shiladitya Ghosh, Dinabandhu Manna, Sumona Das, Sambit Dutta, Sabine Kleinsteuber, Heike Strauber, Md. Kamrul Hassan, Suvi Kuittinen, Ari Pappinen
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Energy & Fuels
Subhashis Das, Rajnish Kaur Calay, Ranjana Chowdhury, Kaustav Nath, Fasil Ejigu Eregno
Article
Environmental Sciences
Sumona Das, Kaustav Nath, Ranjana Chowdhury
Summary: Algae, particularly Leptolyngbya subtilis JUCHE1, have been studied for biomass and lipid production under autotrophic and heterotrophic growth conditions. Glycerol showed higher biomass production compared to CO2, with maximum productivity achieved at 15% CO2 or equivalent glycerol concentration.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Soumitra Pati, Sudipta De, Ranjana Chowdhury
Summary: This study developed a steady state process simulation of co-gasification of mixed Indian LBs using Aspen plus, and found the optimal combinations for energy and exergy efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Chemical
Ashim Kumar Khan, Ranjana Chowdhury
Summary: The performance of an integrated gasification combined cycle power plant using a mixture of municipal solid waste and coal was evaluated. Sensitivity analysis was conducted on the avoidance in CO2 emission (ACE) and the energy return on energy investment (EROEI) with different independent variables. A valid model was developed through response surface methodology, showing the strong influence of MSW-coal ratio and gasifier temperature on both ACE and EROEI.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Thermodynamics
Shiladitya Ghosh, Sambit Dutta, Ranjana Chowdhury
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Green & Sustainable Science & Technology
Md. Kamrul Hassan, Ranjana Chowdhury, Shiladitya Ghosh, Dinabandhu Manna, Ari Pappinen, Suvi Kuittinen
Summary: The study assessed the potential of surplus rice straw (SRS) for second-generation (2G) bioethanol production, renewable electricity generation, and greenhouse gas emissions reduction in India. Results showed that the availability of SRS and the choice of pretreatment method are crucial factors in determining its potential. Under the benchmark scenario for 2030-31, significant reductions in GHG emissions were achieved when generating renewable electricity replaces conventional grid electricity.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Engineering, Chemical
Santanu Sarkar, Ranjana Chowdhury
Summary: The study aimed to investigate the non-ideal behavior of a plug flow bioreactor (PFBR) under non-reactive conditions for a biological system by incorporating physical parameters from batch growth study of Lactobacillus sp. The study found that PFBR always deviates from the ideal behavior of a plug flow reactor and the non-ideality further increased due to the relation between the Peclet number and medium viscosity in the initial velocity distribution study.
INDIAN CHEMICAL ENGINEER
(2022)
Article
Engineering, Chemical
Sumona Das, Kaustav Nath, Vivek Kumar Gupta, Ranjana Chowdhury
Summary: This study determined the autotrophic growth kinetics of the blue-green algae Leptolyngbya subtilis JUCHE1 and evaluated its lipid production capability. The research found that CO2 concentration has a significant impact on algal growth and production.
INDIAN CHEMICAL ENGINEER
(2021)
Article
Engineering, Chemical
Chandrima Roy, Ranjana Chowdhury, Pinaki Bhattacharya
Summary: A study on a bioreactor treating lipid-rich synthetic wastewater was conducted, with a focus on regaining efficiency through backwashing and proposing integration with a syngas-based 2G-Biorefinery.
INDIAN CHEMICAL ENGINEER
(2021)
Article
Engineering, Chemical
Sambit Dutta, Shiladitya Ghosh, Dinabandhu Manna, Ranjana Chowdhury
Summary: This study focuses on the energy and environmental performance of a rice straw biorefinery producing bio-butanol as the main product, achieving high energy efficiency and environmental performance. By utilizing rice straw-derived glucose and xylose for bio-butanol production, zero-waste management is achieved, and CO(2) emissions are reduced through electricity generation.
INDIAN CHEMICAL ENGINEER
(2021)
Article
Engineering, Chemical
Shiladitya Ghosh, Sumona Pathak, Dinabandhu Manna, Ranjana Chowdhury
Summary: This study evaluated the potential of biofuel production through the volatile fatty acid (VFA) platform using mixed consortia isolated from soil of rice cultivation field. The acid production potential and growth kinetic parameters of the isolated consortium were assessed, with a summative growth model found to be valid when using a combination of glucose and RS-hydrolysate as carbon sources. The presence of VFAs in the culture broth and the potential for butanol generation from RS were also confirmed.
INDIAN CHEMICAL ENGINEER
(2021)
Article
Engineering, Chemical
Jigisha Panda, Ranjana Chowdhury
Summary: This article focuses on the assessment of acid-rich pyroliquid assimilation by Shewanella putrefaciens MTCC 8104 from the waste stream of a jute stick pyrolysis unit. The strain can absorb up to 230 ppm of acetic acid per hour at optimum temperature and pH, exhibiting a diauxic growth pattern when both APL and whey are used as carbon sources. The growth kinetics and models for the strain have been determined and analyzed, providing valuable insights into bioelectricity production from waste streams.
INDIAN CHEMICAL ENGINEER
(2021)
Article
Engineering, Chemical
Subhashis Das, Rajnish Kaur Calay, Ranjana Chowdhury
Article
Engineering, Environmental
Santanu Sarkar, Chiranjib Bhattacharjee
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)