1
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Adolfs C, Altarabeen R, Kimmritz L, Gibowsky L, Schroeter B, Beuermann S, Smirnova I. Hydrophobic Aerogels from Vinyl Polymers Derived from Radical Polymerization: Proof-of-Concept. Macromol Rapid Commun 2024; 45:e2400147. [PMID: 38875713 DOI: 10.1002/marc.202400147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/24/2024] [Indexed: 06/16/2024]
Abstract
Hydrophilicity is one important drawback of bio-based aerogels. To overcome this issue, a novel approach for the preparation of mesoporous, water repellent aerogels is introduced, which combines synthesis of cross-linked bio-based copolymers from methacrylate copolymerizations, followed by solvent exchange and supercritical drying steps. The influence of monomers with different nonpolar ester groups (methyl, vanillin, tetrahydrofurfuryl) on textural properties and water contact angles of the dry products is assessed. Final aerogels show generally high overall porosities (≈96%), low densities (0.07-0.11 g cm-3) as well as fine, mainly mesoporous networks, and specific surface areas in the range of 120-240 m2 g-1. Hereby, choice of the methacrylate ester groups results in differences of the resulting pore-size distributions. Water repellency tests show stable static water contact angles in the hydrophobic range (≈100°) achieved for the substrate containing the vanillin ester group. On the contrary the other substrates absorb water quickly, which indicates a decisive role of the ester group. The presented approach opens up a new pathway to bio-based aerogels with intrinsic hydrophobicity. It is suggested that the properties are tailored by the choice of the monomer structure, hence enabling further adaption and optimization of the products.
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Affiliation(s)
- Claudia Adolfs
- TU Clausthal, Arnold-Sommerfeld-Str. 4, 38678, Clausthal-Zellerfeld, Germany
| | - Razan Altarabeen
- Hamburg University of Technology, Institute of Thermal Separation Processes, Eißendorfer Straße 38 (O), 21073, Hamburg, Germany
| | - Leon Kimmritz
- TU Clausthal, Arnold-Sommerfeld-Str. 4, 38678, Clausthal-Zellerfeld, Germany
| | - Lara Gibowsky
- Hamburg University of Technology, Institute of Thermal Separation Processes, Eißendorfer Straße 38 (O), 21073, Hamburg, Germany
| | - Baldur Schroeter
- Hamburg University of Technology, Institute of Thermal Separation Processes, Eißendorfer Straße 38 (O), 21073, Hamburg, Germany
| | - Sabine Beuermann
- TU Clausthal, Arnold-Sommerfeld-Str. 4, 38678, Clausthal-Zellerfeld, Germany
| | - Irina Smirnova
- Hamburg University of Technology, Institute of Thermal Separation Processes, Eißendorfer Straße 38 (O), 21073, Hamburg, Germany
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2
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Panahi-Sarmad M, Alikarami N, Guo T, Haji M, Jiang F, Rojas OJ. Aerogels based on Bacterial Nanocellulose and their Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403583. [PMID: 39073312 DOI: 10.1002/smll.202403583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 07/01/2024] [Indexed: 07/30/2024]
Abstract
Microbial cellulose stands out for its exceptional characteristics in the form of biofilms formed by highly interlocked fibrils, namely, bacterial nanocellulose (BNC). Concurrently, bio-based aerogels are finding uses in innovative materials owing to their lightweight, high surface area, physical, mechanical, and thermal properties. In particular, bio-based aerogels based on BNC offer significant opportunities as alternatives to synthetic or mineral counterparts. BNC aerogels are proposed for diverse applications, ranging from sensors to medical devices, as well as thermal and electroactive systems. Due to the fibrous nanostructure of BNC and the micro-porosity of BNC aerogels, these materials enable the creation of tailored and specialized designs. Herein, a comprehensive review of BNC-based aerogels, their attributes, hierarchical, and multiscale features are provided. Their potential across various disciplines is highlighted, emphasizing their biocompatibility and suitability for physical and chemical modification. BNC aerogels are shown as feasible options to advance material science and foster sustainable solutions through biotechnology.
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Affiliation(s)
- Mahyar Panahi-Sarmad
- Department of Wood Science, The University of British Columbia, 2900-2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Niloofar Alikarami
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Tianyu Guo
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Mehri Haji
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Feng Jiang
- Department of Wood Science, The University of British Columbia, 2900-2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Orlando J Rojas
- Department of Wood Science, The University of British Columbia, 2900-2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
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3
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Sozcu S, Frajova J, Wiener J, Venkataraman M, Tomkova B, Militky J. Effect of Drying Methods on the Thermal and Mechanical Behavior of Bacterial Cellulose Aerogel. Gels 2024; 10:474. [PMID: 39057497 PMCID: PMC11276278 DOI: 10.3390/gels10070474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/02/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Bacterial cellulose (BC) presents significant promise as a biomaterial, boasting unique qualities such as exceptional cellulose purity, robust mechanical strength, heightened crystalline structure, and biodegradability. Several studies have highlighted specific effects, such as the impact of dehydration/rehydration on BC tensile strength, the influence of polymer treatment methods on mechanical properties, the correlation between microorganism type, drying method, and Young's modulus value, and the relationship between culture medium composition, pH, and crystallinity. Drying methods are crucial to the structure, performance, and application of BC films. Research findings indicate that the method used for drying can influence the mechanical properties of BC films, including parameters such as tensile strength, Young's modulus, and water absorption capacity, as well as the micromorphology, crystallinity, and thermal characteristics of the material. Their versatility makes them potential biomaterials applicable in various fields, including thermal and acoustic insulation, owing to their distinct thermal and mechanical attributes. This review delves into the thermal and mechanical behavior of bacterial cellulose aerogels, which are profoundly impacted by their drying mechanism.
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Affiliation(s)
- Sebnem Sozcu
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, 46117 Liberec, Czech Republic; (J.F.); (J.W.); (B.T.); (J.M.)
| | | | | | - Mohanapriya Venkataraman
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, 46117 Liberec, Czech Republic; (J.F.); (J.W.); (B.T.); (J.M.)
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4
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Emmanuel M. Unveiling the revolutionary role of nanoparticles in the oil and gas field: Unleashing new avenues for enhanced efficiency and productivity. Heliyon 2024; 10:e33957. [PMID: 39055810 PMCID: PMC11269882 DOI: 10.1016/j.heliyon.2024.e33957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 06/17/2024] [Accepted: 07/01/2024] [Indexed: 07/28/2024] Open
Abstract
Prominent oil corporations are currently engaged in a thorough examination of the potential implementation of nanoparticles within the oil and gas sector. This is evidenced by the substantial financial investments made towards research and development, which serves as a testament to the significant consideration given to nanoparticles. Indeed, nanoparticles has garnered increasing attention and innovative applications across various industries, including but not limited to food, biomedicine, electronics, and materials. In recent years, the oil and gas industry has conducted extensive research on the utilization of nanoparticles for diverse purposes, such as well stimulation, cementing, wettability, drilling fluids, and enhanced oil recovery. To explore the manifold uses of nanoparticles in the oil and gas sector, a comprehensive literature review was conducted. Reviewing several published study data leads to the conclusion that nanoparticles can effectively increase oil recovery by 10 %-15 % of the initial oil in place while tertiary oil recovery gives 20-30 % extra initial oil in place. Besides, it has been noted that the properties of the reservoir rock influence the choice of the right nanoparticle for oil recovery. The present work examines the utilization of nanoparticles in the oil and gas sector, providing a comprehensive analysis of their applications, advantages, and challenges. The article explores various applications of nanoparticles in the industry, including enhanced oil recovery, drilling fluids, wellbore strengthening, and reservoir characterization. By delving into these applications, the article offers a thorough understanding of how nanoparticles are employed in different processes within the sector. This analysis may prove highly advantageous for future studies and applications in the oil and gas sector.
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Affiliation(s)
- Marwa Emmanuel
- University of Dodoma, College of Natural and Mathematical Sciences, Chemistry Department, Dodoma, Tanzania
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5
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Pontes ER, de Souza Guedes L, da Silva TF, Barbosa FCB, de Souza BWS, de Freitas Rosa M, Vieira RS, Andrade FK. Development of silanized bacterial cellulose aerogels for the incorporation of natural oils with healing properties: Copaiba (Copaifera officinalis), bourbon geranium (Pelargonium X ssp.) essential oils and buriti (Mauritia flexuosa) vegetable oil. Int J Biol Macromol 2024; 269:132266. [PMID: 38777689 DOI: 10.1016/j.ijbiomac.2024.132266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/30/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024]
Abstract
Bacterial cellulose (BC) represents a promising biomaterial, due to its unique and versatile properties. We report, herein, on purposely-designed structural modifications of BC that enhance its application as a wound dressing material. Chemical modification of the functional groups of BC was performed initially to introduce a hydrophobic/oleophilic character to its surface. Specifically, silanization was carried out in an aqueous medium using methyltrimethoxisilane (MTMS) as the silanizing agent, and aerogels were subsequently prepared by freeze-drying. The BC-MTMS aerogel obtained displayed a highly porous (99 %) and lightweight structure with an oil absorption capacity of up to 52 times its dry weight. The XRD pattern indicated that the characteristic crystallographic planes of the native BC were maintained after the silanization process. Thermal analysis showed that the thermal stability of the BC-MTMS aerogel increased, as compared to the pure BC aerogel (pBC). Moreover, the BC-MTMS aerogel was not cytotoxic to fibroblasts and keratinocytes. In the second step of the study, the incorporation of natural oils into the aerogel's matrix was found to endow antimicrobial and/or healing properties to BC-MTMS. Bourbon geranium (Pelargonium X ssp.) essential oil (GEO) was the only oil that exhibited antimicrobial activity against the tested microorganisms, whereas buriti (Mauritia flexuosa) vegetable oil (BVO) was non-cytotoxic to the cells. This study demonstrates that the characteristics of the BC structure can be modified, while preserving its intrinsic features, offering new possibilities for the development of BC-derived materials for specific applications in the biomedical field.
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Affiliation(s)
- Evellheyn Rebouças Pontes
- Department of Chemical Engineering, Research Laboratory of Biomaterials and Bioproducts, Federal University of Ceará, Fortaleza, Ceará 60455-760, Brazil
| | - Luciana de Souza Guedes
- Department of Chemical Engineering, Research Laboratory of Biomaterials and Bioproducts, Federal University of Ceará, Fortaleza, Ceará 60455-760, Brazil
| | - Thamyres Freire da Silva
- Department of Chemical Engineering, Research Laboratory of Biomaterials and Bioproducts, Federal University of Ceará, Fortaleza, Ceará 60455-760, Brazil
| | | | | | | | - Rodrigo Silveira Vieira
- Department of Chemical Engineering, Research Laboratory of Biomaterials and Bioproducts, Federal University of Ceará, Fortaleza, Ceará 60455-760, Brazil.
| | - Fábia Karine Andrade
- Department of Chemical Engineering, Research Laboratory of Biomaterials and Bioproducts, Federal University of Ceará, Fortaleza, Ceará 60455-760, Brazil.
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6
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Yang X, Du Y, Jiang P, Fu R, Liu L, Miao C, Xie R, Liu Y, Wang Y, Sai H. Woven Agarose-Cellulose Composite Aerogel Fibers with Outstanding Radial Elasticity for Personal Thermal Management. ACS APPLIED MATERIALS & INTERFACES 2024; 16:26757-26767. [PMID: 38722961 DOI: 10.1021/acsami.4c03509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Aerogel fibers are good thermal insulators, suitable for weaving, and show potential as the next generation of intelligent textiles that can effectively reduce heat consumption for personal thermal management. However, the production of continuous aerogel fibers from biomass with sufficient strength and radial elasticity remains a significant challenge. Herein, continuous gel fibers were produced via wet spinning using agarose (AG) as the matrix, 2,2,2,6,6-tetramethylpiperidine-1-oxyl radical-oxidized cellulose nanofibers (TOCNs) as the reinforcing agent, and no other chemical additives by utilizing the gelling properties of AG. Supercritical drying and chemical vapor deposition (CVD) were then used to produce hydrophobic AG-TOCN aerogel fibers (HATAFs). During CVD, the HATAF gel skeleton was covered with an isostructural silica coating. Consequently, the HATAFs can recover from radial compression under 60% strain. Moreover, the HATAFs have low densities (≤0.14 g cm-3), high porosities (≥91.8%), high specific surface areas (≥188 m2 g-1), moderate tensile strengths (≤1.75 MPa), excellent hydrophobicity (water contact angles of >130°), and good thermal insulating properties at different temperatures. Thus, HATAFs are expected to become a new generation of materials for efficient personal thermal management.
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Affiliation(s)
- Xin Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yuxiang Du
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Pengjie Jiang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Rui Fu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Lipeng Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Changqing Miao
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Rongrong Xie
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yinghui Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yaxiong Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Huazheng Sai
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
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7
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Du Y, Jiang P, Yang X, Fu R, Liu L, Miao C, Wang Y, Sai H. Hydrophobic Silk Fibroin-Agarose Composite Aerogel Fibers with Elasticity for Thermal Insulation Applications. Gels 2024; 10:266. [PMID: 38667686 PMCID: PMC11049485 DOI: 10.3390/gels10040266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/08/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Aerogel fibers, characterized by their ultra-low density and ultra-low thermal conductivity, are an ideal candidate for personal thermal management as they hold the potential to effectively reduce the energy consumption of room heating and significantly contribute to energy conservation. However, most aerogel fibers have weak mechanical properties or require complex manufacturing processes. In this study, simple continuous silk fibroin-agarose composite aerogel fibers (SCAFs) were prepared by mixing agarose with silk fibroin through wet spinning and rapid gelation, followed by solvent replacement and supercritical carbon dioxide treatment. Among them, the rapid gelation of the SCAFs was achieved using agarose physical methods with heat-reversible gel properties, simplifying the preparation process. Hydrophobic silk fibroin-agarose composite aerogel fibers (HSCAFs) were prepared using a simple chemical vapor deposition (CVD) method. After CVD, the HSCAFs' gel skeletons were uniformly coated with a silica layer containing methyl groups, endowing them with outstanding radial elasticity. Moreover, the HSCAFs exhibited low density (≤0.153 g/cm3), a large specific surface area (≥254.0 m2/g), high porosity (91.1-94.7%), and excellent hydrophobicity (a water contact angle of 136.8°). More importantly, they showed excellent thermal insulation performance in low-temperature (-60 °C) or high-temperature (140 °C) environments. The designed HSCAFs may provide a new approach for the preparation of high-performance aerogel fibers for personal thermal management.
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Affiliation(s)
- Yuxiang Du
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Pengjie Jiang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Xin Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Rui Fu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Lipeng Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Changqing Miao
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Yaxiong Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Huazheng Sai
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
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8
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Cai C, Chen Y, Ding C, Wei Z, Wang X. Eliminating trade-offs between optical scattering and mechanical durability in aerogels as outdoor passive cooling metamaterials. MATERIALS HORIZONS 2024; 11:1502-1514. [PMID: 38230558 DOI: 10.1039/d3mh01802d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Passive cooling is a promising approach for reducing the large energy consumption to achieve carbon neutrality. Foams/aerogels can be considered effective daytime cooling materials due to their good solar scattering and thermal insulation capacity. However, the contradiction between the desired high solar reflectivity and mechanical performance still limits their scalable production and real application. Herein, inspired by the "Floor-Pillar" concept in the building industry, a multi-structure assembly-induced ice templating technology was used to construct all-cellulosic aerogels with well-defined biomimetic structures. By using cellulose nanofibers (CNFs) as pillars and cellulose nanocrystals (CNCs) as floors and methyltrimethoxysilane (MTMS) as a crosslinking material, an all-cellulosic aerogel (NCA) exhibiting high mechanical strength (mechanical strength = 0.3 MPa at 80% compression ratio, Young's modulus = 1 MPa), ultralow thermal conductivity (28 mW m-1 K-1), ultrahigh solar reflectance (97.5%), high infrared emissivity (0.93), as well as excellent anti-weather function can be achieved, exceeding the performance of most reported cellulosic aerogels. Furthermore, the mechanisms of the improved mechanical strength and stimulated superior solar reflectance of NCA were studied in detail using finite element simulations and COMSOL Multiphysics. As a result, the NCA can achieve a cooling efficiency of 7.5 °C during the daytime. The building energy stimulus demonstrated that 44% of cooling energy can be saved in China annually if the NCA is applied. This work lays the foundation for the preparation of biomass aerogels for energy-saving applications.
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Affiliation(s)
- Chenyang Cai
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Yi Chen
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Chunxiang Ding
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Zechang Wei
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Xuan Wang
- Department of Mechanical Engineering, University of North Texas, Denton, Texas, 76203, USA.
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9
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Ke W, Ge F, Shi X, Zhang Y, Wu T, Zhu X, Cheng Y, Shi Y, Wang Z, Yuan L, Yan Y. Superelastic and superflexible cellulose aerogels for thermal insulation and oil/water separation. Int J Biol Macromol 2024; 260:129245. [PMID: 38191109 DOI: 10.1016/j.ijbiomac.2024.129245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/22/2023] [Accepted: 01/03/2024] [Indexed: 01/10/2024]
Abstract
Aerogels with low thermal conductivity and high adsorption capacity present a promising solution to curb water pollution caused by organic reagents as well as mitigate heat loss. Although aerogels exhibiting good adsorption capacity and thermal insulation have been reported, materials with mechanical integrity, high flexibility and shear resistance still pose a formidable task. Here, we produced bacterial cellulose-based ultralight multifunctional hybrid aerogels by using freeze-drying followed by chemical vapor deposition silylation method. The hybrid aerogels displayed a low density of 10-15 mg/cm3, high porosity exceeding 99.1 %, low thermal conductivity (27.3-29.2 mW/m.K) and superior hydrophobicity (water contact angle>120o). They also exhibited excellent mechanical properties including superelasticity, high flexibility and shear resistance. The hybrid aerogels demonstrated high heat shielding efficiency when used as an insulating material. As a selective oil absorbent, the hybrid aerogels exhibit a maximum adsorption capacity of up to approximately 156 times its own weight and excellent recoverability. Especially, the aerogel's highly accessible porous microstructure results in an impressive flux rate of up to 162 L/h.g when used as a filter in a continuous oil-water separator to isolate n-hexane-water mixtures. This work presents a novel endeavor to create high-performance, sustainable, reusable, and adaptable multifunctional aerogels.
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Affiliation(s)
- Weikang Ke
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Fang Ge
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Xiaolong Shi
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Yutao Zhang
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Tianyu Wu
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Xi Zhu
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Yaming Cheng
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Yiqian Shi
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Zhongkai Wang
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Liang Yuan
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China.
| | - Youxian Yan
- Biomass Molecular Engineering Center, Department of Material Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China.
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10
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MohammadAlizadeh A, Elmi F. Flame retardant and superoleophilic polydopamine/chitosan-graft (g)-octanal coated polyurethane foam for separation oil/water mixtures. Int J Biol Macromol 2024; 259:129237. [PMID: 38191114 DOI: 10.1016/j.ijbiomac.2024.129237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 11/11/2023] [Accepted: 01/02/2024] [Indexed: 01/10/2024]
Abstract
The discharge of crude petroleum oils and their derivatives poses serious environmental challenges, which can be mitigated through oil/water separation. In this study, polyurethane (PU)/polydopamine (PDA)/chitosan-graft (g)-octanal foam was prepared by immersing of PU foam in PDA and chitosan-g-octanal solutions. The fabricated PU foam exhibited thermal stability, flame retardancy, and hydrophobicity/superoleophilicity. The coated PU foam can selectively absorb heavy and light oils from dynamic and static oil/water mixtures. The maximum sorption capacity for olive oil was found to be as high as 41.48 g/g. PU/PDA/chitosan-g-octanal foam also demonstrated excellent flame retardancy and the ability to quickly extinguish fire, as confirmed by the limiting oxygen index (LOI) test.
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Affiliation(s)
- AmirHossein MohammadAlizadeh
- Department of Marine Chemistry, Faculty of Marine & Environmental Sciences, University of Mazandaran, Babolsar, Iran
| | - Fatemeh Elmi
- Department of Marine Chemistry, Faculty of Marine & Environmental Sciences, University of Mazandaran, Babolsar, Iran.
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11
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Sharma R, Nath PC, Mohanta YK, Bhunia B, Mishra B, Sharma M, Suri S, Bhaswant M, Nayak PK, Sridhar K. Recent advances in cellulose-based sustainable materials for wastewater treatment: An overview. Int J Biol Macromol 2024; 256:128517. [PMID: 38040157 DOI: 10.1016/j.ijbiomac.2023.128517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 12/03/2023]
Abstract
Water pollution presents a significant challenge, impacting ecosystems and human health. The necessity for solutions to address water pollution arises from the critical need to preserve and protect the quality of water resources. Effective solutions are crucial to safeguarding ecosystems, human health, and ensuring sustainable access to clean water for current and future generations. Generally, cellulose and its derivatives are considered potential substrates for wastewater treatment. The various cellulose processing methods including acid, alkali, organic & inorganic components treatment, chemical treatment and spinning methods are highlighted. Additionally, we reviewed effective use of the cellulose derivatives (CD), including cellulose nanocrystals (CNCs), cellulose nano-fibrils (CNFs), CNPs, and bacterial nano-cellulose (BNC) on waste water (WW) treatment. The various cellulose processing methods, including spinning, mechanical, chemical, and biological approaches are also highlighted. Additionally, cellulose-based materials, including adsorbents, membranes and hydrogels are critically discussed. The review also highlighted the mechanism of adsorption, kinetics, thermodynamics, and sorption isotherm studies of adsorbents. The review concluded that the cellulose-derived materials are effective substrates for removing heavy metals, dyes, pathogenic microorganisms, and other pollutants from WW. Similarly, cellulose based materials are used for flocculants and water filtration membranes. Cellulose composites are widely used in the separation of oil and water emulsions as well as in removing dyes from wastewater. Cellulose's natural hydrophilicity makes it easier for it to interact with water molecules, making it appropriate for use in water treatment processes. Furthermore, the materials derived from cellulose have wider application in WW treatment due to their inexhaustible sources, low energy consumption, cost-effectiveness, sustainability, and renewable nature.
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Affiliation(s)
- Ramesh Sharma
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Pinku Chandra Nath
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India; Department of Applied Biology, School of Biological Sciences, University of Science & Technology Meghalaya, Baridua 793101, India
| | - Yugal Kishore Mohanta
- Department of Applied Biology, School of Biological Sciences, University of Science & Technology Meghalaya, Baridua 793101, India; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, India
| | - Biswanath Bhunia
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Bishwambhar Mishra
- Department of Biotechnology, Chaitanya Bharathi Institute of Technology, Hyderabad 500075, India
| | - Minaxi Sharma
- Department of Applied Biology, School of Biological Sciences, University of Science & Technology Meghalaya, Baridua 793101, India
| | - Shweta Suri
- Amity Institute of Food Technology, Amity University Uttar Pradesh, Noida 201301, India
| | - Maharshi Bhaswant
- New Industry Creation Hatchery Center, Tohoku University, Sendai 980 8579, Japan
| | - Prakash Kumar Nayak
- Department of Food Engineering and Technology, Central Institute of Technology Kokrajhar, Kokrajhar 783370, India.
| | - Kandi Sridhar
- Department of Food Technology, Karpagam Academy of Higher Education (Deemed to be University), Coimbatore 641021, India.
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12
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Gu J, Liu L, Zhu R, Song Q, Yu H, Jiang P, Miao C, Du Y, Fu R, Wang Y, Hao Y, Sai H. Recycling Coal Fly Ash for Super-Thermal-Insulating Aerogel Fiber Preparation with Simultaneous Al 2O 3 Extraction. Molecules 2023; 28:7978. [PMID: 38138468 PMCID: PMC10746117 DOI: 10.3390/molecules28247978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/02/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
A large quantity of coal fly ash is generated worldwide from thermal power plants, causing a serious environmental threat owing to disposal and storage problems. In this work, for the first time, coal fly ash is converted into advanced and novel aerogel fibers and high-purity α-Al2O3. Silica-bacterial cellulose composite aerogel fibers (CAFs) were synthesized using an in situ sol-gel process under ambient pressure drying. Due to the unique "nanoscale interpenetrating network" (IPN) structure, the CAFs showed wonderful mechanical properties with an optimum tensile strength of 5.0 MPa at an ultimate elongation of 5.8%. Furthermore, CAFs with a high porosity (91.8%) and high specific surface area (588.75 m2/g) can inherit advanced features, including excellent thermal insulation, stability over a wide temperature range, and hydrophobicity (contact angle of approximately 144°). Additionally, Al2O3 was simultaneously extracted from the coal fly ash to ensure that the coal fly ash was fully exploited. Overall, low-cost woven CAFs fabrics are suitable for wearable applications and offer a great approach to comprehensively use coal fly ash to address environmental threats.
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Affiliation(s)
- Jie Gu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Lipeng Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Rongrong Zhu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Qiqi Song
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Hanqing Yu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Pengjie Jiang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Changqing Miao
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yuxiang Du
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Rui Fu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yaxiong Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yan Hao
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Huazheng Sai
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (L.L.); (R.Z.); (Q.S.); (H.Y.); (P.J.); (C.M.); (Y.D.); (Y.W.); (Y.H.)
- Inner Mongolia Key Laboratory of Coal Chemical Engineering & Comprehensive Utilization, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
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13
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Yao A, Wang Y, Yu J, Tian S, Zhan Y, Liao H, Lan J, Lin S. Fe-pillared montmorillonite functionalized chitosan/gelatin foams for efficient removal of organic pollutants by integration of adsorption and Fenton degradation. Carbohydr Polym 2023; 321:121265. [PMID: 37739494 DOI: 10.1016/j.carbpol.2023.121265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/16/2023] [Accepted: 08/04/2023] [Indexed: 09/24/2023]
Abstract
A Fe-pillared montmorillonite (Fe-MMT) functionalized bio-based foam (Fe-MMT@CS/G) was developed by using chitosan (CS) and gelatin (G) as the matrix for high-efficiency elimination of organic pollutants through the integration of adsorption and Fenton degradation. The results showed that the mechanical properties of as-obtained foam were strengthened by the addition of certain amounts of Fe-MMT. Interestingly, Fe-MMT@CS/G displayed efficient adsorption ability for charged pollutants under a wide range of pH. The adsorption processes of methyl blue (MB), methylene blue (MEB) and tetracycline hydrochloride (TCH) on Fe-MMT@CS/G were well described by the Freundlich isotherm model and pseudo-second-order kinetic model. The maximum adsorption capacities were 2208.24 mg/g for MB, 1167.52 mg/g for MEB, and 806.31 mg/g for TCH. Electrostatic interactions, hydrogen bonding and van der Waals forces probably involved the adsorption process. As expected, this foam could exhibit better removal properties toward both charged and uncharged organic pollutants through the addition of H2O2 to trigger the Fenton degradation reaction. For non-adsorbable and uncharged bisphenol A (BPA), the removal efficiency was dramatically increased from 1.20 % to 92.77 % after Fenton degradation. Additionally, it presented outstanding recyclability. These results suggest that Fe-MMT@CS/G foam is a sustainable and efficient green material for the alleviation of water pollution.
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Affiliation(s)
- Anrong Yao
- College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Yafang Wang
- College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Jincheng Yu
- College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Siyao Tian
- College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Yifei Zhan
- Department of Wood Technology and Wood-based Composites, Sustainable Materials and Chemistry, University of Göttingen, Göttingen, Germany
| | - Hongjiang Liao
- College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Jianwu Lan
- College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China.
| | - Shaojian Lin
- College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China.
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14
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Yadav C, Lee JM, Mohanty P, Li X, Jang WD. Graft onto approaches for nanocellulose-based advanced functional materials. NANOSCALE 2023; 15:15108-15145. [PMID: 37712254 DOI: 10.1039/d3nr03087c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
The resurgence of cellulose as nano-dimensional 'nanocellulose' has unlocked a sustainable bioeconomy for the development of advanced functional biomaterials. Bestowed with multifunctional attributes, such as renewability and abundance of its source, biodegradability, biocompatibility, superior mechanical, optical, and rheological properties, tunable self-assembly and surface chemistry, nanocellulose presents exclusive opportunities for a wide range of novel applications. However, to alleviate its intrinsic hydrophilicity-related constraints surface functionalization is inevitably needed to foster various targeted applications. The abundant surface hydroxyl groups on nanocellulose offer opportunities for grafting small molecules or macromolecular entities using either a 'graft onto' or 'graft from' approach, resulting in materials with distinctive functionalities. Most of the reviews published to date extensively discussed 'graft from' modification approaches, however 'graft onto' approaches are not well discussed. Hence, this review aims to provide a comprehensive summary of 'graft onto' approaches. Furthermore, insight into some of the recently emerging applications of this grafted nanocellulose including advanced nanocomposite formulation, stimuli-responsive materials, bioimaging, sensing, biomedicine, packaging, and wastewater treatment has also been reviewed.
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Affiliation(s)
- Chandravati Yadav
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 03722 Seoul, Republic of Korea.
| | - Jeong-Min Lee
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 03722 Seoul, Republic of Korea.
| | - Paritosh Mohanty
- Functional Materials Laboratory, Department of Chemistry, IIT Roorkee, Roorkee 247667, Uttarakhand, India
| | - Xinping Li
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, PR China
| | - Woo-Dong Jang
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, 03722 Seoul, Republic of Korea.
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15
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Jayan SS, Jayan JS, Saritha A. A review on recent advances towards sustainable development of bio-inspired agri-waste based cellulose aerogels. Int J Biol Macromol 2023; 248:125928. [PMID: 37481183 DOI: 10.1016/j.ijbiomac.2023.125928] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 06/25/2023] [Accepted: 07/19/2023] [Indexed: 07/24/2023]
Abstract
Cellulose aerogel (CA) is considered to be the most promising material due to its extraordinary properties like unique microstructure, porosity, large specific surface area, biodegradability, renewable nature and lightweight. Cellulosic aerogels are thus found to have potential applications in different fields especially in water purification and biomedical field. Agricultural waste based cellulose aerogels are recently getting wider attention owing to its sustainability. The synthesis methods of agri-waste based cellulose aerogels, its properties and application in different fields especially in the field of water purification are detailed in a comprehensive manner. This review tries to bring light into the commercialization of value-added products from sustainable, cheap agricultural waste material and tries to motivate young researchers.
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Affiliation(s)
- Sajitha S Jayan
- Department of Chemistry, Bishop Moore College, Mavelikkara, Kerala, India
| | - Jitha S Jayan
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India; Department of Chemistry, National Institute of Technology, Calicut, Kerala, India.
| | - Appukuttan Saritha
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India.
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16
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Ganguly A, Nag S, Gayen K. Synthesis of cellulosic and nano-cellulosic aerogel from lignocellulosic materials for diverse sustainable applications: a review. Prep Biochem Biotechnol 2023; 54:419-434. [PMID: 37603307 DOI: 10.1080/10826068.2023.2245875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Cellulosic aerogels are sustainable, biodegradable, and ultra-light porous materials with three-dimensional networks having high specific surface area. Depending on the source of precursor materials, they are categorized into plant-based aerogel, bacterial cellulosic aerogel. Different types of aerogels are also produced from microcrystalline cellulose (MCC), nanocrystalline cellulose (NCC), cellulose microfibril (CMF) and cellulose nanofibril (CNF). Furthermore, inorganic and organic substances are embedded to produce hybrid aerogel or composite aerogel for the enhancement of its performance in various fields. Mixing, gelation, solvent exchange, and drying (e.g., super critical carbon dioxide or freeze drying) are the basic steps involved in cellulosic aerogel synthesis. Based on the composition of precursors during aerogel synthesis, cellulosic aerogels have broad applications in various fields such as adsorbents, electrodes, sensors, captive deionization materials, catalysts, drug delivery, thermal and sound insulating materials. This review provided consolidated information on: (i) classification of cellulosic aerogels based on the sources of raw materials, (ii) processes involved to produce the cellulosic aerogel, (iii) cellulosic aerogel synthesized from MCC, NCC, CMF and CNF, (iv) nano particle doped cellulosic aerogel, and (v) its application in various field with future perspectives.
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Affiliation(s)
- Anisha Ganguly
- Department of Chemical Engineering, National Institute of Technology, Agartala, India
| | - Soma Nag
- Department of Chemical Engineering, National Institute of Technology, Agartala, India
| | - Kalyan Gayen
- Department of Chemical Engineering, National Institute of Technology, Agartala, India
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17
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Chun Y, Kim EH, Lee CS, Chang H, Kang CS. Sustainable and Elastic Carbon Aerogel by Polydimethylsiloxane Coating for Organic Solvent Absorption and Potential Application for Sensors (Infections, Environmental, Wearable Sensors, etc.). MATERIALS (BASEL, SWITZERLAND) 2023; 16:4560. [PMID: 37444874 DOI: 10.3390/ma16134560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/20/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023]
Abstract
Carbon aerogel is a promising material in various applications, such as water treatment, insulators, catalysts, and sensors, due to its porosity, low density, conductivity, and good chemical stability. In this study, an inexpensive carbon aerogel was prepared through lyophilization and post-pyrolysis using waste paper. However, carbon aerogel, in the form of short belts, is randomly entangled without a crosslinking agent and has weak mechanical properties, thus limiting its applications, which would otherwise be various. In this paper, a novel strategy is proposed to fabricate a PDMS-coated carbon aerogel (Aerogel@PDMS). Benefiting from microwave heating, precise PDMS coating onto the carbon frame was able to be carried out in a short amount of time. PDMS coating firmly tied the carbon microstructure, maintaining a unique aerogel property without blocking its porous structure. FE-SEM, RAMAN, XPS, and FT-IR were all used to confirm the surface change in PDMS coating. Compressible stability and water contact angle measurement showed that Aerogel@PDMS is a perspective organic solvent absorbent due to its good resilience and its hydrophobicity, and, as a result, its organic solvent absorption capacity and repeated absorption were evaluated, ultimately suggesting a promising material in oil clean-up and pollution remediation in water. Based on our experimental results, we identified elastic carbon aerogels provided by a novel coating technology. In the future, then, the developed carbon/PDMS composite can be examined as a promising option for various applications, such as environmental sensors, virus sensors, and wearable sensors.
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Affiliation(s)
- Youngsang Chun
- Department of Advanced Materials Engineering, Shinhan University, 95, Hoam-ro, Uijeongbu-si 11644, Republic of Korea
| | - Eui-Hwa Kim
- Department of Advanced Materials Engineering, Shinhan University, 95, Hoam-ro, Uijeongbu-si 11644, Republic of Korea
| | - Chae-Seok Lee
- KAIST Institute for Information Technology Convergence Integrated Sensor Team, KAIST, Daejeon 34141, Republic of Korea
| | - Hojong Chang
- KAIST Institute for Information Technology Convergence Integrated Sensor Team, KAIST, Daejeon 34141, Republic of Korea
| | - Chan-Sol Kang
- Department of Advanced Materials Engineering, Shinhan University, 95, Hoam-ro, Uijeongbu-si 11644, Republic of Korea
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18
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Ahmad A, Kamaruddin MA, H P S AK, Yahya EB, Muhammad S, Rizal S, Ahmad MI, Surya I, Abdullah CK. Recent Advances in Nanocellulose Aerogels for Efficient Heavy Metal and Dye Removal. Gels 2023; 9:gels9050416. [PMID: 37233007 DOI: 10.3390/gels9050416] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023] Open
Abstract
Water pollution is a significant environmental issue that has emerged because of industrial and economic growth. Human activities such as industrial, agricultural, and technological practices have increased the levels of pollutants in the environment, causing harm to both the environment and public health. Dyes and heavy metals are major contributors to water pollution. Organic dyes are a major concern because of their stability in water and their potential to absorb sunlight, increasing the temperature and disrupting the ecological balance. The presence of heavy metals in the production of textile dyes adds to the toxicity of the wastewater. Heavy metals are a global issue that can harm both human health and the environment and are mainly caused by urbanization and industrialization. To address this issue, researchers have focused on developing effective water treatment procedures, including adsorption, precipitation, and filtration. Among these methods, adsorption is a simple, efficient, and cheap method for removing organic dyes from water. Aerogels have shown potential as a promising adsorbent material because of their low density, high porosity, high surface area, low thermal and electrical conductivity, and ability to respond to external stimuli. Biomaterials such as cellulose, starch, chitosan, chitin, carrageenan, and graphene have been extensively studied for the production of sustainable aerogels for water treatment. Cellulose, which is abundant in nature, has received significant attention in recent years. This review highlights the potential of cellulose-based aerogels as a sustainable and efficient material for removing dyes and heavy metals from water during the treatment process.
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Affiliation(s)
- Azfaralariff Ahmad
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Green Biopolymer, Coatings and Packaging Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Mohamad Anuar Kamaruddin
- Environmental Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Abdul Khalil H P S
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Green Biopolymer, Coatings and Packaging Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Esam Bashir Yahya
- Green Biopolymer, Coatings and Packaging Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Syaifullah Muhammad
- Chemical Engineering Department, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia
- ARC-PUIPT Nilam Aceh, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia
| | - Samsul Rizal
- Mechanical Engineering Department, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia
| | - Mardiana Idayu Ahmad
- Environmental Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Renewable Biomass Transformation Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Indra Surya
- Department of Chemical Engineering, Universitas Sumatera Utara, Medan 20155, Indonesia
| | - C K Abdullah
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Green Biopolymer, Coatings and Packaging Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
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19
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Hu X, Yang B, Hao M, Chen Z, Liu Y, Ramakrishna S, Wang X, Yao J. Preparation of high elastic bacterial cellulose aerogel through thermochemical vapor deposition catalyzed by solid acid for oil-water separation. Carbohydr Polym 2023; 305:120538. [PMID: 36737190 DOI: 10.1016/j.carbpol.2023.120538] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/23/2022] [Accepted: 01/01/2023] [Indexed: 01/07/2023]
Abstract
Oil pollution has caused more and more serious damages to the environment, especially to water. Oil and water separation technologies based on high-performance absorbing materials have attracted extensive attentions. Herein, elasticity-enhanced bacterial cellulose (BC) aerogel is synthesized for oil/water separation through thermochemical vapor deposition (CVD) catalyzed by 1, 2, 3, 4-butanetetracarboxylic acid (BTCA). BTCA has two functions, namely, esterification with BC and catalyzing CVD. The prepared aerogel could be recovered soon after being compressed and the elastic recovery was >90 % at set maximum deformation of 80 %. And, it also exhibits vigorous fatigue resistance with an elastic deformation of >80 % after 50 cycles. The high elastic and hydrophobic aerogel is very suitable for absorbing and desorbing oils by simple mechanical squeezing. The adsorption capacity for n-hexane and dichloroethane maintain 87 % and 81 % after 50 cycles, respectively, which implies robust reusability. Importantly, the CVD could also be catalyzed by other solid acids such as citric acid and vitamin C. This design and fabrication method offers a novel avenue for the preparation of hydrophobic bacterial cellulose aerogel with high elasticity.
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Affiliation(s)
- Xiaodong Hu
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Bo Yang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Ming Hao
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Zhijun Chen
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Yanbo Liu
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China.
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, 639798, Singapore
| | - Xiaoxiao Wang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China.
| | - Jinbo Yao
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.
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20
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Camparotto NG, Neves TDF, Mastelaro VR, Prediger P. Hydrophobization of aerogels based on chitosan, nanocellulose and tannic acid: Improvements on the aerogel features and the adsorption of contaminants in water. ENVIRONMENTAL RESEARCH 2023; 220:115197. [PMID: 36592805 DOI: 10.1016/j.envres.2022.115197] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Hydrophobic chitosan aerogels are promising adsorbents for immiscible contaminants such as oils and organic solvents. However, few studies have reported the application of hydrophobic aerogels as adsorbent for organic contaminants dissolved in water. Herein, novel highly hydrophobic chitosan (CS) beads containing cellulose nanocrystals (CNC) and hydrophobized tannic acid (HTA) composite were prepared with different CS and CNC-HTA content to achieve an optimized adsorbent to remove emerging contaminants from water in batch and fixed-bed assays. The CS@CNC-HTA beads properties were assessed by FTIR, XRD, SEM, XPS, Micro-CT, WCA, and zeta potential. Supramolecular interactions and physical interlacements between CS and CNC-HTA enabled the formation of CS@CNC-HTA beads with high porosity (98.6%), great volume of open pore space (10.16 mm3) and hydrophobicity (121.8°). The 1:1 CS@CNC-HTA beads showed the best performance for removing the pharmaceutical sildenafil citrate, the basic blue 26 dye, and the surfactant cetylpyridinium chloride, reaching adsorption capacities of 86 (73%), 375 (84%), and 390 (90%) mg.g-1, respectively. The 1:1 CS@CNC-HTA beads efficiently removed sildenafil citrate, basic blue 26 and cetylpyridinium chloride in fixed-bed experiments with exhaustion times of 890, 300, and 470 min, respectively. Theoretical calculations and adsorption assays indicate that the main attractive interactions are pyridinium-π, π-π, electrostatic and hydrophobic.
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Affiliation(s)
| | | | - Valmor Roberto Mastelaro
- São Carlos Institute of Physics, University of São Paulo - Usp, 13566-590, São Carlos, São Paulo, Brazil
| | - Patrícia Prediger
- School of Technology, University of Campinas - Unicamp, 13484-332, Limeira, São Paulo, Brazil.
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21
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Biopolymeric Fibrous Aerogels: The Sustainable Alternative for Water Remediation. Polymers (Basel) 2023; 15:polym15020262. [PMID: 36679143 PMCID: PMC9867057 DOI: 10.3390/polym15020262] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 01/07/2023] Open
Abstract
The increment in water pollution due to the massive development in the industrial sector is a worldwide concern due to its impact on the environment and human health. Therefore, the development of new and sustainable alternatives for water remediation is needed. In this context, aerogels present high porosity, low density, and a remarkable adsorption capacity, making them candidates for remediation applications demonstrating high efficiency in removing pollutants from the air, soil, and water. Specifically, polymer-based aerogels could be modified in their high surface area to integrate functional groups, decrease their hydrophilicity, or increase their lipophilicity, among other variations, expanding and enhancing their efficiency as adsorbents for the removal of various pollutants in water. The aerogels based on natural polymers such as cellulose, chitosan, or alginate processed by different techniques presented high adsorption capacities, efficacy in oil/water separation and dye removal, and excellent recyclability after several cycles. Although there are different reviews based on aerogels, this work gives an overview of just the natural biopolymers employed to elaborate aerogels as an eco-friendly and renewable alternative. In addition, here we show the synthesis methods and applications in water cleaning from pollutants such as dyes, oil, and pharmaceuticals, providing novel information for the future development of biopolymeric-based aerogel.
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22
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Effect of cellulose nanocrystals on bacterial cellulose hydrogel for oil-water separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Super-hydrophobic cotton aerogel with ultra-high flux and high oil retention capability for efficient oil/water separation. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Qu W, Wang Z, Wang X, Wang Z, Yu D, Ji D. High-hydrophobic ZIF-67@PLA Honeycomb Aerogel for Efficient Oil–Water Separation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Aoudi B, Boluk Y, Gamal El-Din M. Recent advances and future perspective on nanocellulose-based materials in diverse water treatment applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:156903. [PMID: 35753453 DOI: 10.1016/j.scitotenv.2022.156903] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/10/2022] [Accepted: 06/19/2022] [Indexed: 06/15/2023]
Abstract
Over the past few years, nanocellulose and its derivatives have drawn attention as promising bio-based materials for water treatment applications due to their high surface area, high strength, and renewable, biocompatible nature. The abundance of hydroxyl functional groups on the surfaces of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) enables a broad range of surface modifications which results in propitious nanocomposites with tunable characteristics. In this context, this review describes the continuously developing applications of nanocellulose-based materials in the areas of adsorption, catalysis, filtration, and flocculation, with a special emphasis on the removal of contaminants such as heavy metals, dyes, and pharmaceutical compounds from diverse water systems. Recent progresses in the diverse forms of application of nanocellulose adsorbents (suspension, hydrogel, aerogel, and membrane) are also highlighted. Finally, challenges and future perspectives on emerging nanocellulose-based materials and their possible industrial applications are presented and discussed.
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Affiliation(s)
- Bouthaina Aoudi
- Department of Civil and Environmental Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada
| | - Yaman Boluk
- Department of Civil and Environmental Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.
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26
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Abbasi Moud A. Advanced cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF) aerogels: Bottom-up assembly perspective for production of adsorbents. Int J Biol Macromol 2022; 222:1-29. [PMID: 36156339 DOI: 10.1016/j.ijbiomac.2022.09.148] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/04/2022] [Accepted: 09/16/2022] [Indexed: 12/25/2022]
Abstract
The most common and abundant polymer in nature is the linear polysaccharide cellulose, but processing it requires a new approach since cellulose degrades before melting and does not dissolve in ordinary organic solvents. Cellulose aerogels are exceptionally porous (>90 %), have a high specific surface area, and have low bulk density (0.0085 mg/cm3), making them suitable for a variety of sophisticated applications including but not limited to adsorbents. The production of materials with different qualities from the nanocellulose based aerogels is possible thanks to the ease with which other chemicals may be included into the structure of nanocellulose based aerogels; despite processing challenges, cellulose can nevertheless be formed into useful, value-added products using a variety of traditional and cutting-edge techniques. To improve the adsorption of these aerogels, rheology, 3-D printing, surface modification, employment of metal organic frameworks, freezing temperature, and freeze casting techniques were all investigated and included. In addition to exploring venues for creation of aerogels, their integration with CNC liquid crystal formation were also explored and examined to pursue "smart adsorbent aerogels". The objective of this endeavour is to provide a concise and in-depth evaluation of recent findings about the conception and understanding of nanocellulose aerogel employing a variety of technologies and examination of intricacies involved in enhancing adsorption properties of these aerogels.
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Affiliation(s)
- Aref Abbasi Moud
- Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada.
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27
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Kamal T, Ul-Islam M, Fatima A, Ullah MW, Manan S. Cost-Effective Synthesis of Bacterial Cellulose and Its Applications in the Food and Environmental Sectors. Gels 2022; 8:gels8090552. [PMID: 36135264 PMCID: PMC9498321 DOI: 10.3390/gels8090552] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/14/2022] [Accepted: 08/22/2022] [Indexed: 11/23/2022] Open
Abstract
Bacterial cellulose (BC), also termed bio-cellulose, has been recognized as a biomaterial of vital importance, thanks to its impressive structural features, diverse synthesis routes, high thermomechanical properties, and its ability to combine with multiple additives to form composites for a wide range of applications in diversified areas. Its purity, nontoxicity, and better physico-mechanical features than plant cellulose (PC) make it a better choice for biological applications. However, a major issue with the use of BC instead of PC for various applications is its high production costs, mainly caused by the use of expensive components in the chemically defined media, such as Hestrin–Schramm (HS) medium. Furthermore, the low yield of BC-producing bacteria indirectly accounts for the high cost of BC-based products. Over the last couple of decades, extensive efforts have been devoted to the exploration of low-cost carbon sources for BC production, besides identifying efficient bacterial strains as well as developing engineered strains, developing advanced reactors, and optimizing the culturing conditions for the high yield and productivity of BC, with the aim to minimize its production cost. Considering the applications, BC has attracted attention in highly diversified areas, such as medical, pharmaceutics, textile, cosmetics, food, environmental, and industrial sectors. This review is focused on overviewing the cost-effective synthesis routes for BC production, along with its noteworthy applications in the food and environmental sectors. We have made a comprehensive review of recent papers regarding the cost-effective production and applications of BC in the food and environmental sectors. This review provides the basic knowledge and understanding for cost-effective and scaleup of BC production by discussing the techno-economic analysis of BC production, BC market, and commercialization of BC products. It explores BC applications as food additives as its functionalization to minimize different environmental hazards, such as air contaminants and water pollutants.
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Affiliation(s)
- Tahseen Kamal
- Center of Excellence for Advanced Materials and Research, King Abdulaziz University, Jeddah 22230, Saudi Arabia
- Correspondence:
| | - Mazhar Ul-Islam
- Department of Chemical Engineering, College of Engineering, Dhofar University, Salalah 2509, Oman
| | - Atiya Fatima
- Department of Chemical Engineering, College of Engineering, Dhofar University, Salalah 2509, Oman
| | - Muhammad Wajid Ullah
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Sehrish Manan
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
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28
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Hydrophobic and lipophilic cellulose nanocrystal aerogel prepared by methyltrichlorosilane via vapor‐phase reaction. J Appl Polym Sci 2022. [DOI: 10.1002/app.53045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Navya PV, Gayathri V, Samanta D, Sampath S. Bacterial cellulose: A promising biopolymer with interesting properties and applications. Int J Biol Macromol 2022; 220:435-461. [PMID: 35963354 DOI: 10.1016/j.ijbiomac.2022.08.056] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 07/24/2022] [Accepted: 08/08/2022] [Indexed: 11/24/2022]
Abstract
The ever-increasing demands for materials with desirable properties led to the development of materials that impose unfavorable influences on the environment and the ecosystem. Developing a low-cost, durable, and eco-friendly functional material with biological origins has become necessary to avoid these consequences. Bacterial cellulose generated by bacteria dispenses excellent structural and functional properties and satisfies these requirements. BC and BC-derived materials are essential in developing pure and environmentally safe functional materials. This review offers a detailed understanding of the biosynthesis of BC, properties, various functionalization methods, and applicability in biomedical, water treatment, food storage, energy conversion, and energy storage applications.
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Affiliation(s)
- P V Navya
- Department of Materials Science, School of Technology, Central University of Tamil Nadu, Thiruvarur 610101, India.
| | - Varnakumar Gayathri
- Polymer Science and Technology Department, CSIR-Central Leather Research Institute, Adyar, Chennai 600020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Debasis Samanta
- Polymer Science and Technology Department, CSIR-Central Leather Research Institute, Adyar, Chennai 600020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Srinivasan Sampath
- Department of Materials Science, School of Technology, Central University of Tamil Nadu, Thiruvarur 610101, India.
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30
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Qiao A, Huang R, Penkova A, Qi W, He Z, Su R. Superhydrophobic, elastic and anisotropic cellulose nanofiber aerogels for highly effective oil/water separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121266] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Wang W, Yang D, Mou L, Wu M, Wang Y, Tan F, Yang F. Remodeling of waste corn stalks into renewable, compressible and hydrophobic biomass-based aerogel for efficient and selective oil/organic solvent absorption. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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32
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Robust Silica–Agarose Composite Aerogels with Interpenetrating Network Structure by In Situ Sol–Gel Process. Gels 2022; 8:gels8050303. [PMID: 35621601 PMCID: PMC9141877 DOI: 10.3390/gels8050303] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/10/2022] [Accepted: 05/10/2022] [Indexed: 12/22/2022] Open
Abstract
Aerogels are three-dimensional nanoporous materials with outstanding properties, especially great thermal insulation. Nevertheless, their extremely high brittleness restricts their practical application. Recently, although the mechanical properties of silica aerogels have been improved by regulating the precursor or introducing a polymer reinforcer, these preparation processes are usually tedious and time-consuming. The purpose of this study was to simplify the preparation process of these composite aerogels. A silicic acid solution treated with cation exchange resin was mixed with agarose (AG) to gel in situ, and then composite aerogels (CAs) with an interpenetrating network (IPN) structure were obtained by aging and supercritical CO2 fluid (SCF) drying. Compared to previous works, the presented CAs preparation process is briefer and more environmentally friendly. Moreover, the CAs exhibit a high specific surface area (420.5 m2/g), low thermal conductivity (28.9 mW m−1 K−1), excellent thermal insulation properties, and thermal stability. These results show that these CAs can be better used in thermal insulation.
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33
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Lu J, Jiang Y, Xiao R, Jacob KI, Tao L, Li S, Guo L. Chemical Vapor Deposition Based Superelastic and Superhydrophoboic Thermoplastic Polymeric Nanofibrous Aerogels for Water Purification. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02330-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Abstract
The growing interest in innovations regarding the treatment of oily wastewater stems from the fact that the oil industry is the largest polluter of the environment. The harm caused by this industry is seen in all countries. Companies that produce such wastewater are responsible for its treatment prior to disposal or recycling into their production processes. As oil emulsions are difficult to manage and require different types of treatment or even combined methods, a range of environmental technologies have been proposed for oil-contaminated effluents, such as gravity separation, flotation, flocculation, biological treatment, advanced oxidation processes, and membranes. Natural materials, such as biopolymers, constitute a novel, sustainable solution with considerable potential for oily effluent separation. The present review offers an overview of the treatment of oily wastewater, describing current trends and the latest applications. This review also points to further research needs and major concerns, especially with regards to sustainability, and discusses potential biotechnological applications.
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35
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Bodea IM, Cătunescu GM, Pop CR, Fiț NI, David AP, Dudescu MC, Stănilă A, Rotar AM, Beteg FI. Antimicrobial Properties of Bacterial Cellulose Films Enriched with Bioactive Herbal Extracts Obtained by Microwave-Assisted Extraction. Polymers (Basel) 2022; 14:polym14071435. [PMID: 35406309 PMCID: PMC9003207 DOI: 10.3390/polym14071435] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 01/27/2023] Open
Abstract
The use of bacterial cellulose (BC) as scaffold for active biofilms is one of the most interesting applications, especially for the biomedical and food industries. However, there are currently few studies evaluating the potential of incorporating herbal extracts into various biomaterials, including BC. Thus, the aim of this study is to report a screening of the total phenolic content and antioxidant and antimicrobial activity of ethanolic extracts of oregano, rosemary, parsley, and lovage. At the same time, the bioactive potential of BC enriched with the four ethanolic extracts is described. Microwave-assisted extraction was used to extract bioactive compounds from the four selected herbs. The physical, mechanical, structural, and chemical properties of BC were also assessed. Next, BC was enriched with the extracts, and their effect against Escherichia coli, Staphylococcus aureus, and Candida albicans was evaluated. The results showed that the bioactivity of the herbs varied significantly, with rosemary extract being the most bioactive. The BC films possessed good mechanical properties, and a three-dimensional network fibrillar structure appropriate for ethanolic-extract incorporation. The BC samples enriched with rosemary extracts had the highest antibacterial activity against S. aureus, while E. coli. and C. albicans seemed to be resistant to all extracts, regardless of herbs.
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Affiliation(s)
- Ioana M. Bodea
- Department of Preclinical and Clinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (I.M.B.); (N.I.F.); (F.I.B.)
| | - Giorgiana M. Cătunescu
- Department of Technical and Soil Sciences, Faculty of Agriculture, University of Agricultural Science and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
- Correspondence: (G.M.C.); (A.P.D.)
| | - Carmen R. Pop
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (C.R.P.); (A.S.); (A.M.R.)
| | - Nicodim I. Fiț
- Department of Preclinical and Clinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (I.M.B.); (N.I.F.); (F.I.B.)
| | - Adriana P. David
- Department of Technical and Soil Sciences, Faculty of Agriculture, University of Agricultural Science and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
- Correspondence: (G.M.C.); (A.P.D.)
| | - Mircea C. Dudescu
- Department of Mechanical Engineering, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania;
| | - Andreea Stănilă
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (C.R.P.); (A.S.); (A.M.R.)
| | - Ancuța M. Rotar
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (C.R.P.); (A.S.); (A.M.R.)
| | - Florin I. Beteg
- Department of Preclinical and Clinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (I.M.B.); (N.I.F.); (F.I.B.)
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36
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Huang J, Li D, Huang L, Tan S, Liu T. Bio-Based Aerogel Based on Bamboo, Waste Paper, and Reduced Graphene Oxide for Oil/Water Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3064-3075. [PMID: 35196452 DOI: 10.1021/acs.langmuir.1c02821] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In recent years, the discharge of industrial waste oil has increased and offshore oil leakage has occurred frequently, and thus water pollution has become a worldwide problem that attracts much attention. In this regard, a kind of oil-absorbing material with high oil-absorbing property and good mechanical property is urgently needed. Here, we reported a new type of aerogels with three-dimensional layered voids using natural bamboo powder, waste paper (WP), and graphene oxide (GO) as raw materials. The obtained aerogel had high adsorption capacity (87-121 g/g), compressibility, and high elasticity, which can separate oil from water and selectively absorb oil. This study provides not only a new treatment in agricultural waste treatment but also a facile, green, and low-cost approach to synthesize high-performance graphene-based oil absorbers, which might give us an effective solution for oil pollution of water resources worldwide.
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Affiliation(s)
- Jiwei Huang
- Guangdong Engineering Technology Research Centre of Graphene-Like Functional and High-Performance Products and Materials, Institute of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Dandan Li
- Guangdong Engineering Technology Research Centre of Graphene-Like Functional and High-Performance Products and Materials, Institute of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Langhuan Huang
- Guangdong Engineering Technology Research Centre of Graphene-Like Functional and High-Performance Products and Materials, Institute of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Shaozao Tan
- Guangdong Engineering Technology Research Centre of Graphene-Like Functional and High-Performance Products and Materials, Institute of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Ting Liu
- Guangdong Engineering Technology Research Centre of Graphene-Like Functional and High-Performance Products and Materials, Institute of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
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37
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Beaumont M, Jahn E, Mautner A, Veigel S, Böhmdorfer S, Potthast A, Gindl-Altmutter W, Rosenau T. Facile Preparation of Mechanically Robust and Functional Silica/Cellulose Nanofiber Gels Reinforced with Soluble Polysaccharides. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:895. [PMID: 35335708 PMCID: PMC8949125 DOI: 10.3390/nano12060895] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 12/18/2022]
Abstract
Nanoporous silica gels feature extremely large specific surface areas and high porosities and are ideal candidates for adsorption-related processes, although they are commonly rather fragile. To overcome this obstacle, we developed a novel, completely solvent-free process to prepare mechanically robust CNF-reinforced silica nanocomposites via the incorporation of methylcellulose and starch. Significantly, the addition of starch was very promising and substantially increased the compressive strength while preserving the specific surface area of the gels. Moreover, different silanes were added to the sol/gel process to introduce in situ functionality to the CNF/silica hydrogels. Thereby, CNF/silica hydrogels bearing carboxyl groups and thiol groups were produced and tested as adsorber materials for heavy metals and dyes. The developed solvent-free sol/gel process yielded shapable 3D CNF/silica hydrogels with high mechanical strength; moreover, the introduction of chemical functionalities further widens the application scope of such materials.
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Affiliation(s)
- Marco Beaumont
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria; (E.J.); (S.B.); (A.P.)
| | - Elisabeth Jahn
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria; (E.J.); (S.B.); (A.P.)
| | - Andreas Mautner
- Faculty of Chemistry, Institute of Materials Chemistry and Research, Polymer and Composite Engineering (PaCE) Group, University of Vienna, Währinger Street 42, 1090 Vienna, Austria;
| | - Stefan Veigel
- Department of Material Sciences and Process Engineering, Institute of Wood Technology and Renewable Materials, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria; (S.V.); (W.G.-A.)
| | - Stefan Böhmdorfer
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria; (E.J.); (S.B.); (A.P.)
| | - Antje Potthast
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria; (E.J.); (S.B.); (A.P.)
| | - Wolfgang Gindl-Altmutter
- Department of Material Sciences and Process Engineering, Institute of Wood Technology and Renewable Materials, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria; (S.V.); (W.G.-A.)
| | - Thomas Rosenau
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria; (E.J.); (S.B.); (A.P.)
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Porthansgatan 3, FI-20500 Turku, Finland
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Gu J, Ji C, Fu R, Yang X, Wan Z, Wen L, Song Q, Liu Y, Wang Y, Sai H. Robust SiO2–Al2O3/Agarose Composite Aerogel Beads with Outstanding Thermal Insulation Based on Coal Gangue. Gels 2022; 8:gels8030165. [PMID: 35323278 PMCID: PMC8952686 DOI: 10.3390/gels8030165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/27/2022] [Accepted: 03/04/2022] [Indexed: 01/25/2023] Open
Abstract
Advanced SiO2–Al2O3 aerogel materials have outstanding potential in the field of thermal insulation. Nevertheless, the creation of a mechanically robust and low-cost SiO2–Al2O3 aerogel material remains a considerable challenge. In this study, SiO2–Al2O3 aerogel based on coal gangue, which is a type of zero-cost inorganic waste, was constructed in porous agarose aerogel beads, followed by simple chemical vapor deposition of trimethylchlorosilane to fabricate SiO2–Al2O3/agarose composite aerogel beads (SCABs). The resulting SCABs exhibited a unique nanoscale interpenetrating network structure, which is lightweight and has high specific surface area (538.3 m2/g), hydrophobicity (approximately 128°), and excellent thermal stability and thermal insulation performance. Moreover, the compressive strength of the SCABs was dramatically increased by approximately a factor of ten compared to that of native SiO2–Al2O3 aerogel beads. The prepared SCABs not only pave the way for the design of a novel aerogel material for use in thermal insulation without requiring expensive raw materials, but also provide an effective way to comprehensively use coal gangue.
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Affiliation(s)
- Jie Gu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Chao Ji
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Rui Fu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Correspondence: (R.F.); (H.S.)
| | - Xin Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Zhichen Wan
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Lishuo Wen
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Qiqi Song
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yinghui Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Yaxiong Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Huazheng Sai
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; (J.G.); (C.J.); (X.Y.); (Z.W.); (L.W.); (Q.S.); (Y.L.); (Y.W.)
- Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-Coal Chemical Industry, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science & Technology, Baotou 014010, China
- Correspondence: (R.F.); (H.S.)
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Bindra P, Nagargade M, Sahu BK, Shukla SK, Pathak AD, Kaur K, Kumar P, Kataria S, Shanmugam V. Porous Silica Biofiber: A Reusable, Sustainable Fertilizer Reservoir. ACS OMEGA 2022; 7:4832-4839. [PMID: 35187303 PMCID: PMC8851452 DOI: 10.1021/acsomega.1c05245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 12/22/2021] [Indexed: 05/16/2023]
Abstract
Nitrogen fertilizers, namely urea, are prone to leaching that causes inefficiency in crop production and environmental pollution; hence porous particles were explored for slow release. Nevertheless, discrete particles add cost; therefore, jute cellulose has been tested as twine to tether silica together for reusability. On the other hand, silica serves as an exoskeleton to give pore memory property to cellulose, which otherwise is susceptible to loss of porosity during irrigation. The composite shows ∼70% more absorption capacity in the fifth cycle than the fiber without silica coating. The urea release kinetics shows only <1/3 and 3/4 of urea release from the jute-silica composite compared to naked porous silica and cellulose, respectively. The slow and sustained release of fertilizer from the composite results in a continuous increase in the chlorophyll content in rice crops.
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Affiliation(s)
- Pulkit Bindra
- Institute
of Nano Science and Technology, Sector-81, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Mona Nagargade
- Indian
Institute of Sugarcane Research, Raebareli Road, P.O. Dilkusha, Lucknow 226002, India
| | - Bandana Kumari Sahu
- Institute
of Nano Science and Technology, Sector-81, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Sudhir Kumar Shukla
- Indian
Institute of Sugarcane Research, Raebareli Road, P.O. Dilkusha, Lucknow 226002, India
| | - Ashwini Dutt Pathak
- Indian
Institute of Sugarcane Research, Raebareli Road, P.O. Dilkusha, Lucknow 226002, India
| | - Kamaljit Kaur
- Institute
of Nano Science and Technology, Sector-81, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Prem Kumar
- Institute
of Nano Science and Technology, Sector-81, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Sarita Kataria
- Institute
of Nano Science and Technology, Sector-81, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Vijayakumar Shanmugam
- Institute
of Nano Science and Technology, Sector-81, S.A.S. Nagar, Mohali, Punjab 140306, India
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Wang FP, Li B, Sun MY, Wahid F, Zhang HM, Wang SJ, Xie YY, Jia SR, Zhong C. In situ regulation of bacterial cellulose networks by starch from different sources or amylose/amylopectin content during fermentation. Int J Biol Macromol 2022; 195:59-66. [PMID: 34871660 DOI: 10.1016/j.ijbiomac.2021.11.198] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/27/2021] [Accepted: 11/27/2021] [Indexed: 11/05/2022]
Abstract
Bacterial cellulose (BC) is a promising biopolymer, but its three-dimensional structure needs to be controllable to be used in multiple fields. BC has some advantages over other types of cellulose, not only in terms of purity and properties but also in terms of modification (in situ modification) during the synthesis process. Here, starches from different sources or with amylose/amylopectin content were added to the growth medium to regulate the structural properties of BC in-situ. The obtained BC membranes were further modified by superhydrophobic treatment for oil-water separation. Starches alter the viscosity of the medium, thus affecting bacterial motility and cellulose synthesis, and adhere to the microfibers, limiting their further polymerization and ultimately altering the membrane porosity, pore size, and mechanical properties perpendicular to the BC fibril layer direction. The average pore diameter of the BC/PS membrane increased by 1.94 times compared to the initial BC membrane. The chemically modified BC/PS membrane exhibited super-hydrophobicity (water contact angle 167°), high oil-water separation flux (dichloromethane, 23,205 Lm-2 h-1 MPa-1), high separation efficiency (>97%). The study provides a foundation for developing methods to regulate the network structure of BC and broaden its application.
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Affiliation(s)
- Feng-Ping Wang
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Bo Li
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Mei-Yan Sun
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Fazli Wahid
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | | | - Shu-Jun Wang
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; School of Food Science and Technology, Tianjin University of Science and Technology, Tianjin, China
| | - Yan-Yan Xie
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Shi-Ru Jia
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Cheng Zhong
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China.
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Heydari S, Asefnejad A, Hassanzadeh Nemati N, Goodarzi V, Vaziri A. Fabrication of multicomponent cellulose/polypyrrole composed with zinc oxide nanoparticles for improving mechanical and biological properties. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105126] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Incorporations of gold, silver and carbon nanomaterials to kombucha-derived bacterial cellulose: Development of antibacterial leather-like materials. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2021.100278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Wu S, Ning D, Xu D, Cheng Y, Mondal AK, Zou Q, Zhu H, Huang F. Preparation and characterization of super hydrophobic aerogels derived from tunicate cellulose nanocrystals. Carbohydr Res 2021; 511:108488. [PMID: 34875481 DOI: 10.1016/j.carres.2021.108488] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/08/2021] [Accepted: 11/30/2021] [Indexed: 11/15/2022]
Abstract
First time aerogels composite with super hydrophobic properties were developed by using tunicate cellulose nanocrystals (TCNC), which expanded the application scope of animal cellulose resources. In this study, the TCNC was firstly cross-linked with silica and methyltrimethylsilane (MTMS), further coated with fluorodopa to form an aerogel with super hydrophobic properties. The aerogel was characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectra (FT-IR), and X-ray photoelectron spectroscopy (XPS). Results indicated that the contact angle of aerogel was 158.7°, which showed good hydrophobicity. The composite aerogel has superior stability in wide pH range, after 72 h immersion in pH = 0 and 12 solutions, the contact angle was still greater than 150°. The aerogel shows excellent oil-water separation ability and it can be repeatedly used more than 10 times. The separation efficiency can all reach more than 90% for different water-oil mixtures. This synthesized super hydrophobic aerogels derived from tunicate cellulose has greatly extended the application of marine animal celluloses.
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Affiliation(s)
- Shuai Wu
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Dengwen Ning
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China; Yibin Forestry and Bamboo Industry Research Institute, Yibin, 644000, China
| | - Dezhong Xu
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Yanan Cheng
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Ajoy Kanti Mondal
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China; Institute of Fuel Research and Development, Bangladesh Council of Scientific and Industrial Research, Dhaka, 1205, Bangladesh
| | - Qiuxia Zou
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Hongyi Zhu
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Fang Huang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China.
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Pires MR, Lorenço MS, Dias MC, da Silva LR, Júnior IP, Mori FA. Application of Different Vegetable Fibers as Natural Sorbents and Their Use in Water Decontamination from Crude Oil. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marina Rates Pires
- Federal University of Lavras Department of Forest Science PO Box 3037 372000-900 Lavras MG Brazil
| | - Mário Sérgio Lorenço
- Federal University of Lavras Department of Forest Science PO Box 3037 372000-900 Lavras MG Brazil
| | - Matheus Cordazzo Dias
- Federal University of Lavras Department of Forest Science PO Box 3037 372000-900 Lavras MG Brazil
| | - Lucas Rodrigues da Silva
- Federal University of Lavras Department of Forest Science PO Box 3037 372000-900 Lavras MG Brazil
| | - Irineu Petri Júnior
- Federal University of Lavras Department of Engineering PO Box 3037 372000-900 Lavras MG Brazil
| | - Fábio Akira Mori
- Federal University of Lavras Department of Forest Science PO Box 3037 372000-900 Lavras MG Brazil
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Li M, Liu H, Liu J, Pei Y, Zheng X, Tang K, Wang F. Hydrophobic and self-recoverable cellulose nanofibrils/N-alkylated chitosan/poly(vinyl alcohol) sponge for selective and versatile oil/water separation. Int J Biol Macromol 2021; 192:169-179. [PMID: 34624380 DOI: 10.1016/j.ijbiomac.2021.09.189] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/18/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022]
Abstract
A highly hydrophobic and self-recoverable sponge was prepared with cellulose nanofibrils (CNFs), N-alkylated chitosan (NCS), and poly (vinyl alcohol) (PVA), which was then endowed with hydrophobic properties via simple thermal chemical vapor deposition (CVD). The three-dimensional (3D) interconnected microstructure of the prepared CNF/NCS/PVA sponge was found to have 96% porosity, ultra-low density (16.61-50.91 mg/cm3) and high hydrophobicity (water contact angle of 147°), which can absorb various organic solvents with an absorption capacity of 19.05-51.08 times of its original weight. Besides, the sponge could bear 80% strain and be cyclically compressed 50 times under the strain of 50%. The sponge can effectively separate oil/water mixtures and water-in-oil emulsions with high separation efficiency and fluxes. Moreover, the sponge could keep its good stability in various acidic, saline and mechanical abrasion conditions. The green preparation and good separation efficiency suggest a potential application of recyclable and versatile CNF/NCS/PVA sponges in oil/water separation.
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Affiliation(s)
- Mengya Li
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Hui Liu
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China; School of Art and Design, Henan University of Science and Technology, Luoyang 471023, PR China
| | - Jie Liu
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ying Pei
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xuejing Zheng
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Keyong Tang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Fang Wang
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
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Salama A, Abouzeid R, Leong WS, Jeevanandam J, Samyn P, Dufresne A, Bechelany M, Barhoum A. Nanocellulose-Based Materials for Water Treatment: Adsorption, Photocatalytic Degradation, Disinfection, Antifouling, and Nanofiltration. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3008. [PMID: 34835769 PMCID: PMC8620168 DOI: 10.3390/nano11113008] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/22/2021] [Accepted: 10/27/2021] [Indexed: 12/11/2022]
Abstract
Nanocelluloses are promising bio-nano-materials for use as water treatment materials in environmental protection and remediation. Over the past decades, they have been integrated via novel nanoengineering approaches for water treatment processes. This review aims at giving an overview of nanocellulose requirements concerning emerging nanotechnologies of waster treatments and purification, i.e., adsorption, absorption, flocculation, photocatalytic degradation, disinfection, antifouling, ultrafiltration, nanofiltration, and reverse osmosis. Firstly, the nanocellulose synthesis methods (mechanical, physical, chemical, and biological), unique properties (sizes, geometries, and surface chemistry) were presented and their use for capturing and removal of wastewater pollutants was explained. Secondly, different chemical modification approaches surface functionalization (with functional groups, polymers, and nanoparticles) for enhancing the surface chemistry of the nanocellulose for enabling the effective removal of specific pollutants (suspended particles, microorganisms, hazardous metals ions, organic dyes, drugs, pesticides fertilizers, and oils) were highlighted. Thirdly, new fabrication approaches (solution casting, thermal treatment, electrospinning, 3D printing) that integrated nanocelluloses (spherical nanoparticles, nanowhiskers, nanofibers) to produce water treatment materials (individual composite nanoparticles, hydrogels, aerogels, sponges, membranes, and nanopapers) were covered. Finally, the major challenges and future perspectives concerning the applications of nanocellulose based materials in water treatment and purification were highlighted.
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Affiliation(s)
- Ahmed Salama
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt; (A.S.); (R.A.)
| | - Ragab Abouzeid
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt; (A.S.); (R.A.)
- University of Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France;
| | - Wei Sun Leong
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore;
| | - Jaison Jeevanandam
- CQM—Centro de Química da Madeira, MMRG, Campus da Penteada, Universidade da Madeira, 9020-105 Funchal, Portugal;
| | - Pieter Samyn
- Institute for Materials Research (MO-IMOMEC), Applied and Analytical Chemistry, University of Hasselt, B-3590 Diepenbeek, Belgium;
| | - Alain Dufresne
- University of Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France;
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM, 34090 Montpellier, France
| | - Ahmed Barhoum
- NanoStruc Research Group, Chemistry Department, Faculty of Science, Helwan University, Cairo, Helwan 11795, Egypt
- School of Chemical Sciences, Dublin City University, Dublin 9, D09 Y074 Dublin, Ireland
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Zhong H, Zhang Y, Deng J. Optically active porous hybrid particles constructed by alkynylated cellulose nanocrystals, helical substituted polyacetylene, and inorganic silica for enantio-differentiating towards naproxen. Chirality 2021; 34:48-60. [PMID: 34725862 DOI: 10.1002/chir.23382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/29/2021] [Accepted: 10/15/2021] [Indexed: 11/08/2022]
Abstract
This article reports on a novel type of ternary chiral porous hybrid particles (TCPHPs) constructed by alkynylated cellulose nanocrystals (A-CNCs), helical substituted polyacetylene, and inorganic silica. The resulting TCPHPs combine the respective advantages of the three components. A-CNCs serve as stabilizer, co-monomer, and chiral source simultaneously and transfer their chirality to the resulting helical substituted polyacetylenes in the course of copolymerization with achiral acetylenic monomer following "sergeants and soldiers rule". Helical substituted polyacetylenes form chiral helical structures and thus endow TCPHPs with the anticipated optical activity. Inorganic silica constitutes the rigid framework and is covalently bonded with the organic components through hydrolysis of Si-O-Et groups. Phase separation between the organic and inorganic components renders TCPHPs with abundant pores. Scanning electron microscope (SEM) images confirm the formation of spherical particles with porous structures. Circular dichroism spectra demonstrate the optical activity of the chiral hybrid particles. The as-prepared TCPHPs exhibit capacity for enantio-differentiating performance towards chiral naproxen.
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Affiliation(s)
- Hai Zhong
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Yingjie Zhang
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China
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Liu Y, Liu H, Shen Z. Nanocellulose Based Filtration Membrane in Industrial Waste Water Treatment: A Review. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5398. [PMID: 34576639 PMCID: PMC8464859 DOI: 10.3390/ma14185398] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/06/2021] [Accepted: 09/14/2021] [Indexed: 02/05/2023]
Abstract
In the field of industrial wastewater treatment, membrane separation technology, as an emerging separation technology, compared with traditional separation technology such as precipitation, adsorption, and ion exchange, has advantages in separation efficiency, low energy consumption, low cost, simple operation, and no secondary pollution. The application has been expanding in recent years, but membrane fouling and other problems have seriously restricted the development of membrane technology. Natural cellulose is one of the most abundant resources in nature. In addition, nanocellulose has characteristics of high strength and specific surface area, surface activity groups, as well as being pollution-free and renewable, giving it a very wide development prospect in many fields, including membrane separation technology. This paper reviews the current status of nanocellulose filtration membrane, combs the widespread types of nanocellulose and its derivatives, and summarizes the current application of cellulose in membrane separation. In addition, for the purpose of nanocellulose filtration membrane in wastewater treatment, nanocellulose membranes are divided into two categories according to the role in filtration membrane: the application of nanocellulose as membrane matrix material and as a modified additive in composite membrane in wastewater treatment. Finally, the advantages and disadvantages of inorganic ceramic filtrations and nanocellulose filtrations are compared, and the application trend of nanocellulose in the filtration membrane direction is summarized and discussed.
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Affiliation(s)
- Yunxia Liu
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China;
| | - Honghai Liu
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China;
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Zhongrong Shen
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China;
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Robust Silica-Bacterial Cellulose Composite Aerogel Fibers for Thermal Insulation Textile. Gels 2021; 7:gels7030145. [PMID: 34563031 PMCID: PMC8482140 DOI: 10.3390/gels7030145] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/11/2021] [Accepted: 09/14/2021] [Indexed: 12/22/2022] Open
Abstract
Aerogels are nanoporous materials with excellent properties, especially super thermal insulation. However, owing to their serious high brittleness, the macroscopic forms of aerogels are not sufficiently rich for the application in some fields, such as thermal insulation clothing fabric. Recently, freeze spinning and wet spinning have been attempted for the synthesis of aerogel fibers. In this study, robust fibrous silica-bacterial cellulose (BC) composite aerogels with high performance were synthesized in a novel way. Silica sol was diffused into a fiber-like matrix, which was obtained by cutting the BC hydrogel and followed by secondary shaping to form a composite wet gel fiber with a nanoscale interpenetrating network structure. The tensile strength of the resulting aerogel fibers reached up to 5.4 MPa because the quantity of BC nanofibers in the unit volume of the matrix was improved significantly by the secondary shaping process. In addition, the composite aerogel fibers had a high specific area (up to 606.9 m2/g), low density (less than 0.164 g/cm3), and outstanding hydrophobicity. Most notably, they exhibited excellent thermal insulation performance in high-temperature (210 °C) or low-temperature (−72 °C) environments. Moreover, the thermal stability of CAFs (decomposition temperature was about 330 °C) was higher than that of natural polymer fiber. A novel method was proposed herein to prepare aerogel fibers with excellent performance to meet the requirements of wearable applications.
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Biocellulose for Treatment of Wastewaters Generated by Energy Consuming Industries: A Review. ENERGIES 2021. [DOI: 10.3390/en14165066] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Water and energy are two of the most important resources used by humanity. Discharging highly polluting wastewater without prior treatment is known to adversely affect water potability, agriculture, aquatic life and even society. One of the greatest threats to water sources are contaminated effluents, which can be of residential or industrial origin and whose disposal in nature must comply with specific laws aimed at reducing their environmental impact. As the oil industry is closely related to energy consumption, it is among the sectors most responsible for global pollution. The damage caused by this industrial sector is present in all countries, whose legislations require companies to carry out wastewater treatment before disposal or recycling in their production process. Bacterial cellulose membranes have been shown to be efficient as filters for the removal of various contaminants, including biological and chemical agents or heavy metals. Therefore, their use could make an important contribution to bio-based technological development in the circular economy. Moreover, they can be used to produce new materials for industry, taking into consideration current environmental preservation policies aimed at a more efficient use of energy. This review aims to compare and describe the applications of cellulose membranes in the treatment of these effluents.
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