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Lu H, Zhang Y, Zhang B, Jiang S, Qu N, Xiao C, Li L, Li G, Chen L. Preparation of Newly Polymer-Coated Microbial Pellets and Their Adsorption and Degradation Properties for Oil-Containing Wastewater. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11239-11250. [PMID: 38751154 DOI: 10.1021/acs.langmuir.4c00994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Water is the lifeblood of everything on earth, nourishing and nurturing all forms of life, while also contributing to the development of civilization. However, with the rapid development of economic construction, especially the accelerated process of modern industrialization, the pollution of oily sewage is becoming increasingly serious, affecting the ecological balance and human health. The efficient elimination of pollutants in sewage is, therefore, particularly urgent. In this paper, a core-shell microbial reactor (MPFA@CNF-SA-AM) was fabricated by using nanocellulose and sodium alginate (SA) particles embedded with microorganisms as the core and lipophilic and hydrophobic fly ash as the outer shell layer. Compared with that of free microorganisms and cellulose and SA aerogel pellets loading with microorganisms (CNF-SA-AM), which has a degradation efficiency of 60.69 and 82.89%, respectively, the MPFA@CNF-SA-AM possesses a highest degradation efficiency of 90.60% within 240 h. So that this self-floating microbial reactor has selective adsorption properties to achieve oil-water separation in oily wastewater and high effective degradation of organic pollutants with low cost. The adsorption curves of MPFA@CNF-SA-AM for diesel and n-hexadecane were studied. The results showed that the adsorption follows the Freundlich model and is a multimolecular layer of physical adsorption. In addition, the degradation mechanism of diesel oil was studied by gas chromatography-mass spectrometry. The results showed that diesel oil was selectively adsorbed to the interior of MPFA@CNF-SA-AM, and it was degraded by enzymes in microorganisms into n-hexadecanol, n-hexadecaldehyde, and n-hexadecanoic acid in turn, and finally converted to water and carbon dioxide. Compared with existing oily wastewater treatment methods, this green and pollution-free dual-functional core-shell microbial reactor has the characteristics of easy preparation, high efficiency, flexibility, and large-scale degradation. It provides a new, effective green choice for oily wastewater purification and on-site oil spill accidents.
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Affiliation(s)
- Haijing Lu
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
| | - Yuhan Zhang
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
| | - Bin Zhang
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
| | - Shuai Jiang
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
| | - Nannan Qu
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
| | - Chaohu Xiao
- Center of Experiment, Northwest Minzu University, Lanzhou 730030, P. R. China
| | - Li Li
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
| | - Guihua Li
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
| | - Lihua Chen
- College of Chemical Engineering, Key Laboratory of State Ethnic Affairs Commission, Northwest Minzu University, Northwest Xincun 1, Lanzhou 730030, P. R. China
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Ren L, Liu S, Zhong J, Zhang L. Revolutionizing targeting precision: microfluidics-enabled smart microcapsules for tailored delivery and controlled release. LAB ON A CHIP 2024; 24:1367-1393. [PMID: 38314845 DOI: 10.1039/d3lc00835e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
As promising delivery systems, smart microcapsules have garnered significant attention owing to their targeted delivery loaded with diverse active materials. By precisely manipulating fluids on the micrometer scale, microfluidic has emerged as a powerful tool for tailoring delivery systems based on potential applications. The desirable characteristics of smart microcapsules are associated with encapsulation capacity, targeted delivery capability, and controlled release of encapsulants. In this review, we briefly describe the principles of droplet-based microfluidics for smart microcapsules. Subsequently, we summarize smart microcapsules as delivery systems for efficient encapsulation and focus on target delivery patterns, including passive targets, active targets, and microfluidics-assisted targets. Additionally, based on release mechanisms, we review controlled release modes adjusted by smart membranes and on/off gates. Finally, we discuss existing challenges and potential implications associated with smart microcapsules.
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Affiliation(s)
- Lingling Ren
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
| | - Shuang Liu
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
| | - Junjie Zhong
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
| | - Liyuan Zhang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, China.
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Zheng C, Yan C, Xie H, Huang L, Fu H, Zhang T, Huang Z. Preparation, properties, and degradation mechanism of thermosensitive self-degradation microgel. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.2010566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Cunchuan Zheng
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, The People’s Republic of China
| | - Chaozong Yan
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, The People’s Republic of China
| | - Hu Xie
- Xinjiang Oilfield Company’s first Gas Production, PetroChina Xinjiang Oilfield Company, Changji Hui Autonomous Prefecture, The People’s Republic of China
| | - Lamei Huang
- Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Tarim, The People’s Republic of China
| | - Haoran Fu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, The People’s Republic of China
| | - Tailiang Zhang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, The People’s Republic of China
- Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, The People’s Republic of China
| | - Zhiyu Huang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, The People’s Republic of China
- Oil and Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Chengdu, The People’s Republic of China
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Khalil M, Fahmi A, Nizardo NM, Amir Z, Mohamed Jan B. Thermosensitive Core-Shell Fe 3O 4@poly( N-isopropylacrylamide) Nanogels for Enhanced Oil Recovery. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8855-8865. [PMID: 34242029 DOI: 10.1021/acs.langmuir.1c01271] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
An investigation on the application of thermosensitive core-shell Fe3O4@PNIPAM nanogels in enhanced oil recovery was successfully performed. Here, the unique core-shell architecture was fabricated by conducting the polymerization at the surface of 3-butenoic acid-functionalized Fe3O4 nanoparticles and characterized using X-ray diffraction (XRD), 1H NMR, vibration sample magnetometer (VSM), and high-resolution transmission electron microscopy (HR-TEM). According to the results, this core-shell structure was beneficial for achieving the desired high viscosity and low nanofluid mobility ratio at high temperatures, which is essential for enhanced oil recovery (EOR) application. The results demonstrated that the nanogels exhibited a unique temperature-dependent flow behavior due to the PNIPAM shell's ability to transform from a hydrated to a dehydrated state above its low critical solution temperature (LCST). At such conditions, the nanogels exhibited a significantly low mobility ratio (M = 0.86), resulting in an even displacement front during EOR and leads to higher oil production. Based on the result obtained from sand pack flooding, about 25.75% of an additional secondary oil recovery could be produced when the nanofluid was injected at a temperature of 45 °C. However, a further increase in the flooding temperature could result in a slight reduction in oil recovery due to the precipitation of some of the severely aggregated nanogels at high temperatures.
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Affiliation(s)
- Munawar Khalil
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, 16424 Depok, West Java, Indonesia
| | - Alwy Fahmi
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, 16424 Depok, West Java, Indonesia
| | - Noverra Mardhatillah Nizardo
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, 16424 Depok, West Java, Indonesia
| | - Zulhelmi Amir
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Badrul Mohamed Jan
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Minina ES, Sánchez PA, Likos CN, Kantorovich SS. Studying synthesis confinement effects on the internal structure of nanogels in computer simulations. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Gao H, Nazar T, Hu Z, Wen D, Sukhorukov GB. Protective composite silica/polyelectrolyte shell with enhanced tolerance to harsh acid and alkali conditions. J Colloid Interface Sci 2018; 512:198-207. [PMID: 29059552 DOI: 10.1016/j.jcis.2017.10.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/09/2017] [Accepted: 10/10/2017] [Indexed: 10/18/2022]
Abstract
Here we report a facile method to fabricate composite polymeric/inorgainc shells consisting of poly(allylamine hydrochloride) (PAH)/poly-(sodium 4-styrenesulfonate) (PSS) multilayers strengthed by the in situ formed silica (SiO2) nanoparticles (NPs), achieving an enhanced stability under harsh acidic and basic conditions. While the unsiliconised PAH/PSS multilayers show a pH-dependent stability and permeability, the composite PAH/PSS/SiO2 shells display significantly higher chemical tolerance towards a variety of harsh conditions (1 ≤ pH ≤ 13, high salinity). Upon treatment with either hydrochloric acid (HCl, pH=1) or 0.2 M ethylenediaminetetraacetic acid disodium salt (EDTA, weak acid, chelator), the (PAH/PSS)6/SiO2 shells are able to maintain the integrity of most calcium carbonate (CaCO3) particles, as the shells are tickened and densified by sufficient SiO2 NPs. When treated with NaOH solution at pH=13, the (PAH/PSS)6/SiO2 shells also display an intact morphology and maintain the ability to intercept rhodamin B (Rh-B) molecules, which is quite different to that observed with the unsiliconised (PAH/PSS)6 shells. Ultrasound is proved to rapidly break the composite shells, hence can be used as a potential stimulus to trigger the release of encapsulated substances. All the results demonstrate the fact that the composite (PAH/PSS)6/SiO2 shells have a higher chemical stability, lower permeability for small molecules and a greater sensitivity to ultrasound, which is promising for many applications where protecting the activity of small molecules is required, such as the delivery of encapsulated drugs in an unhindered form to their specific destination within the human body.
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Affiliation(s)
- Hui Gao
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom; School of Chemical and Processing Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom.
| | - Thaaqib Nazar
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Zhongliang Hu
- School of Chemical and Processing Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Dongsheng Wen
- School of Chemical and Processing Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom; School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, PR China
| | - Gleb B Sukhorukov
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom.
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Sarkar A, Kanti F, Gulotta A, Murray BS, Zhang S. Aqueous Lubrication, Structure and Rheological Properties of Whey Protein Microgel Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14699-14708. [PMID: 29193975 DOI: 10.1021/acs.langmuir.7b03627] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Aqueous lubrication has emerged as an active research area in recent years due to its prevalence in nature in biotribological contacts and its enormous technological soft-matter applications. In this study, we designed aqueous dispersions of biocompatible whey-protein microgel particles (WPM) (10-80 vol %) cross-linked via disulfide bonding and focused on understanding their rheological, structural and biotribological properties (smooth polydimethylsiloxane (PDMS) contacts, Ra < 50 nm, ball-on-disk set up). The WPM particles (Dh = 380 nm) displayed shear-thinning behavior and good lubricating performance in the plateau boundary as well as the mixed lubrication regimes. The WPM particles facilitated lubrication between bare hydrophobic PDMS surfaces (water contact angle 108°), leading to a 10-fold reduction in boundary friction force with increased volume fraction (ϕ ≥ 65%), largely attributed to the close packing-mediated layer of particles between the asperity contacts acting as "true surface-separators", hydrophobic moieties of WPM binding to the nonpolar surfaces, and particles employing a rolling mechanism analogous to "ball bearings", the latter supported by negligible change in size and microstructure of the WPM particles after tribology. An ultralow boundary friction coefficient, μ ≤ 0.03 was achieved using WPM between O2 plasma-treated hydrophilic PDMS contacts coated with bovine submaxillary mucin (water contact angle 47°), and electron micrographs revealed that the WPM particles spread effectively as a layer of particles even at low ϕ∼ 10%, forming a lubricating load-bearing film that prevented the two surfaces from true adhesive contact. However, above an optimum volume fraction, μ increased in HL+BSM surfaces due to the interpenetration of particles that possibly impeded effective rolling, explaining the slight increase in friction. These effects are reflected in the highly shear thinning nature of the WPM dispersions themselves plus the tendency for the apparent viscosity to fall as dispersions are forced to very high volume fractions. The present work demonstrates a novel approach for providing ultralow friction in soft polymeric surfaces using proteinaceous microgel particles that satisfy both load bearing and kinematic requirements. These findings hold great potential for designing biocompatible particles for aqueous lubrication in numerous soft matter applications.
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Affiliation(s)
- Anwesha Sarkar
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds , Leeds, LS2 9JT, United Kingdom
| | - Farah Kanti
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds , Leeds, LS2 9JT, United Kingdom
- AgroSup Dijon , 26 Boulevard Docteur Petitjean, 21000 Dijon, France
| | - Alessandro Gulotta
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds , Leeds, LS2 9JT, United Kingdom
| | - Brent S Murray
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds , Leeds, LS2 9JT, United Kingdom
| | - Shuying Zhang
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds , Leeds, LS2 9JT, United Kingdom
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Fida TT, Gassara F, Voordouw G. Biodegradation of isopropanol and acetone under denitrifying conditions by Thauera sp. TK001 for nitrate-mediated microbially enhanced oil recovery. JOURNAL OF HAZARDOUS MATERIALS 2017; 334:68-75. [PMID: 28402896 DOI: 10.1016/j.jhazmat.2017.03.061] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/11/2017] [Accepted: 03/28/2017] [Indexed: 06/07/2023]
Abstract
Amendment of reservoir fluid with injected substrates can enhance the growth and activity of microbes. The present study used isopropyl alcohol (IPA) or acetone to enhance the indigenous anaerobic nitrate-reducing bacterium Thauera sp. TK001. The strain was able to grow on IPA or acetone and nitrate. To monitor effects of strain TK001 on oil recovery, sand-packed columns containing heavy oil were flooded with minimal medium at atmospheric or high (400psi) pressure. Bioreactors were then inoculated with 0.5 pore volume (PV) of minimal medium containing Thauera sp. TK001 with 25mM of acetone or 22.2mM of IPA with or without 80mM nitrate. Incubation without flow for two weeks and subsequent injection with minimal medium gave an additional 17.0±6.7% of residual oil in place (ROIP) from low-pressure bioreactors and an additional 18.3% of ROIP from the high-pressure bioreactors. These results indicate that acetone or IPA, which are commonly used organic solvents, are good substrates for nitrate-mediated microbial enhanced oil recovery (MEOR), comparable to glucose, acetate or molasses, tested previously. This technology may be used for coupling biodegradation of IPA and/or acetone in waste streams to MEOR where these waste streams are generated in close proximity to an oil field.
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Affiliation(s)
- Tekle Tafese Fida
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada.
| | - Fatma Gassara
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Gerrit Voordouw
- Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
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