Review
Biotechnology & Applied Microbiology
Marcia Nitschke, Crisiane Aparecida Marangon
Summary: The interest in utilizing microbial-derived molecules, particularly biosurfactants, in the synthesis of nano-sized materials has been growing rapidly. Biosurfactants offer advantages such as eco-friendliness, low toxicity, biocompatibility, and structural diversity, making them versatile in various applications including biomedical and environmental fields.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2022)
Review
Chemistry, Applied
Subi Yoosuf, Prajith Nambiar
Summary: Nanoemulsions have practical applications due to their small particle size, stability, and enhanced bioavailability. Conventional surfactants used in nanoemulsion formulations have associated risks, while microbial biosurfactants offer advantages in terms of stability and drug release. However, there is a lack of research on the combination of biosurfactants and functional drugs in nanoemulsions.
JOURNAL OF SURFACTANTS AND DETERGENTS
(2023)
Article
Engineering, Chemical
Fan Yu, Yulu Du, Mingda Guo, Mengqian Zhao, Li Luo, Tianyou Cui, Shengyuan Deng, Mingjie Jin, Zhengyong Lyu, Xuwei Long
Summary: This study demonstrates the efficient removal of heavy metals from contaminated soil using biosurfactant surfactin through a micellar-enhanced ultrafiltration (MEUF) process. The surfactin can bind heavy metals through electrostatic interactions and then be rejected by the ultrafiltration membranes, resulting in over 98% removal of metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Veronica Segovia, Antonio Reyes, Gildardo Rivera, Pedro Vazquez, Gonzalo Velazquez, Alma Paz-Gonzalez, Regina Hernandez-Gama
Summary: This study focused on producing and characterizing biosurfactants using Thermoanaerobacter sp. CM-CNRG TB177 strain, and evaluating the impact of different carbon and nitrogen sources on the surfactant's ability to reduce water surface tension. The results showed that the strain produces a rhamnolipid mixture, with molasses as a carbon source significantly affecting the surfactant's efficiency. Additionally, it was found that the microorganism requires yeast extract as a nitrogen source for growth, and this study provides the first description of biosurfactant produced by bacteria of the Thermoanaerobacter genus.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Engineering, Chemical
Sagheer A. Onaizi
Summary: The study prepared stable crude oil-in-water nanoemulsions stabilized by rhamnolipid biosurfactant, and found that adjusting the pH using HCl or NaOH can effectively destabilize the emulsions, while enzymatic demulsification was ineffective.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Brian Gidudu, Evans M. Nkhalambayausi Chirwa
Summary: This study discovered that Pseudomonas aeruginosa strain could produce biosurfactants in an electrochemical environment, but the survival and yield were affected by the intensity of the electric field applied, with the highest current leading to bacterial inactivation and elimination.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Environmental Sciences
Arulazhagan Pugazhendi, Mamdoh T. Jamal, Bandar A. Al-Mur, Rajesh Banu Jeyakumar, Gopalakrishnan Kumar
Summary: This study successfully increased the liquefaction efficiency and hydrogen production of Ulva reticulata biomass by the combinative pretreatment of mechanical and biosurfactant.
Article
Chemistry, Physical
Julia Ortiz, Alfonso Oliva, Jose A. Teruel, Francisco J. Aranda, Antonio Ortiz
Summary: The study demonstrates that diRL lipids exhibit different aggregation behaviors under various pH and temperature conditions, with temperature having a more significant impact on the aggregation behavior. At low pH and temperature, diRL can form organized multilayered structures, but becomes highly disordered as pH or temperature increases.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Peter Klausmann, Katja Hennemann, Mareen Hoffmann, Chantal Treinen, Moritz Aschern, Lars Lilge, Kambiz Morabbi Heravi, Marius Henkel, Rudolf Hausmann
Summary: Bacillus subtilis 3NA, a strain capable of high cell densities, utilized its surfactin-producing variant JABs32 in fed-batch processes to achieve significantly increased surfactin titers. Optimization of culture conditions showed a promising potential for enhanced surfactin production in high cell density fermentation.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Ariane Theatre, Carolina Cano-Prieto, Marco Bartolini, Yoann Laurin, Magali Deleu, Joachim Niehren, Tarik Fida, Saicha Gerbinet, Mohammad Alanjary, Marnix H. Medema, Angelique Leonard, Laurence Lins, Ana Arabolaza, Hugo Gramajo, Harald Gross, Philippe Jacques
Summary: Surfactin, a lipoheptapeptide produced by several Bacillus species, has a complex biosynthesis process with diversity in peptide and fatty acid side, leading to a wide range of physico-chemical properties and biological activities. Recent studies focus on metabolic modeling, engineering, and synthetic biology to enhance surfactin production and generate novel derivatives. Optimization of production processes in Bacillus cells considers different steps from gene transcription to surfactin degradation in culture medium.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Carlos Munoz-Cupa, Amarjeet Bassi
Summary: In this study, a dual chamber microbial fuel cell with rhamnolipid biosurfactant was used to investigate the remediation of wastewater loaded with metals. The results showed that the microbial fuel cell achieved a maximum power density of 13.9 mW/m2 and high removal rates of metal ions (60.2% for Cu, 89.5% for Mg, 83.9% for Mn, 90.6% for Zn, and 47.9% for Na) when coupled with rhamnolipid at a concentration of 500 mg/L. Furthermore, the removal rates of COD were 28.7% and 17.0% for biosurfactant concentrations of 100 mg/L and 500 mg/L, respectively. These findings highlight the high efficiency of microbial fuel cells in treating wastewater loaded with rhamnolipid.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Noor Akbar, Ruqaiyyah Siddiqui, Mazhar Iqbal, Kuppusamy Sagathevan, Kwang Sik Kim, Fazal Habib, Naveed Ahmed Khan
Summary: The gut bacteria isolated from rats showed antibacterial activities against various pathogenic bacteria, maintaining their efficacy even after heat treatment. Additionally, the conditioned media exhibited minimal cytotoxic effects on human keratinocyte cells. Mass spectrometry analysis revealed the presence of a large repertoire of lipopeptides from the conditioned media.
Article
Biotechnology & Applied Microbiology
Ekta Khare, Naveen Kumar Arora
Summary: Biosurfactants are environment-friendly molecules with multifunctional properties that can be useful in various industries. The novel biosurfactant-producing isolate Pseudomonas guariconensis LE3 showed potential as a biostimulant and biocontrol agent against charcoal rot disease in sunflowers. The biosurfactant-amended formulation of LE3 cells demonstrated the highest yield enhancement and biocontrol activity, improving plant-bacterial interaction and soil properties for better disease control and plant health.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2021)
Article
Engineering, Chemical
Brian Mwewa, Andre Augustyn, R. Pott, M. Tadie
Summary: The study aimed to understand the interaction between surfactin and pyrite, and confirmed the adsorption of surfactin on pyrite through zeta potential and FTIR analysis. The results showed a stronger interaction at neutral and alkaline pH ranges, indicating the significance of surfactin carboxylic groups ionization in adsorption. Surfactin potentially attached to pyrite surface through chemisorption to Fe-hydroxide sites or interaction of amide groups with sulfur. Surfactin exhibited cleaning effect and collecting abilities for pyrite, with better performance observed at alkaline pH range.
MINERALS ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Talita Correa Nazareth, Conrado Planas Zanutto, Danielle Maass, Antonio Augusto Ulson de Souza, Selene Maria de Arruda Guelli Ulson de Souza
Summary: This study aimed to enhance surfactin production by Bacillus subtilis using Trub as a carbon source. The research found that nitrogen sources and metals supplementation significantly affected biosurfactant production, and adjusting the culture medium conditions could increase the productivity. Successful biosurfactant production was achieved in the bioreactor, with a concentrated extract obtained reaching a maximum surfactin concentration of 1118.20 mg L-1.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)