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Hassani F, Aroujalian A, Rashidi A. Robust and stable superhydrophilic MIL-101 (Cr)-coated copper mesh for highly efficient oil/water emulsion separation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-32978-8. [PMID: 38613752 DOI: 10.1007/s11356-024-32978-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/14/2024] [Indexed: 04/15/2024]
Abstract
In this study, dip coating method was investigated to prepare superhydrophilic MIL-101 (Cr)-coated copper mesh for highly efficient oil/water emulsion separation. To increase the surface area of synthesized MIL-101 (Cr), a purification procedure was developed to remove unreacted H2BDC crystals present in the channel of the initial MIL-101 (Cr) sample synthesized. After that, a dispersing solution of MIL-101 (Cr) was needed to coat on the copper mesh. Thermoplastic polyurethane (TPU) was used as a binder in this procedure. The prepared membranes of M1 (once coated mesh) to M6 (six times coated mesh) were performed to separate oil/water emulsion effectively. Contact angle tests showed the superhydrophilic/underwater superoleophobic wettability behavior of MIL-101 (Cr)-coated copper meshes. The wetting mechanism of the prepared membranes is mostly relevant to the surface functional groups of purified MIL-101 (Cr). Also, the roughness of the nanostructured coated membranes was improved because of the uniform coating of MIL-101 (Cr) which is integrated into hydrophilic TPU. Oil/water separation results showed that M2 (twice coated mesh) showed the maximum amount of water flux (83076 L m-2 h-1) in oil/water separation and M3 (three times coated mesh) had the best performance of oil/water emulsion with 99.99% separation efficiency.
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Affiliation(s)
- Fatemeh Hassani
- Faculty of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Abdolreza Aroujalian
- Faculty of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
| | - Alimorad Rashidi
- Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
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2
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Sun J, Xiong Y, Jia H, Han L, Yin K. Superb microplastics separation performance of graphene oxide tuned by laser bombardment. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132599. [PMID: 37757553 DOI: 10.1016/j.jhazmat.2023.132599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/10/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023]
Abstract
Microplastics have been identified as a significant environmental threat to aquatic ecosystems and human health. Consequently, there is an urgent need for efficient separation methods for small-sized MPs. In this study, a super-hydrophilic graphene oxide (GO) membrane is successfully prepared by facilely depositing GO on a microfiltration substrate, without introducing any surface modification materials, especially nanoparticles, which may cause secondary pollution. Laser bombardment reduces GO lamellar size (23.6% of its original size) and creates an abundance of defects and undulating wrinkles, enabling the deposited GO membrane to have more and shorter pathways for water. As a result, the filtration permeance for 10 μm polyvinyl chloride reaches up to 3396 L m-2 h-1 bar-1, a 1-2-order-of-magnitude enhancement compared to the unirradiated GO membrane, and is also superior to most nanoparticle-modified GO membranes. Simultaneously, the labyrinth structure endows the membrane with a high filtration efficiency of approximately 99% for the majority of MPs. This excellent performance remains virtually unchanged after repeated use. The integration of outstanding separation effects and health safety presents opportunities for practical applications in long-term MP-in-water separation.
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Affiliation(s)
- Jiawei Sun
- College of Electronic and Information Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China; Jiangsu Industrial Intelligent and Low-carbon Technology Engineering Center, Suzhou 215000, China; Suzhou Key Laboratory of Intelligent Low-carbon Technology Application, Suzhou 215000, China.
| | - Yuwei Xiong
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Haiyang Jia
- School of Physics and New Energy, Xuzhou University of Technology, Xuzhou 221018, China
| | - Longxiang Han
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Kuibo Yin
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China.
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Zhang Y, Guo Z. Transition metal compounds: From properties, applications to wettability regulation. Adv Colloid Interface Sci 2023; 321:103027. [PMID: 37883847 DOI: 10.1016/j.cis.2023.103027] [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: 07/13/2023] [Revised: 09/07/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023]
Abstract
Transition metal compounds (TMCs) have the advantages of abundant reserves, low cost, non-toxic and pollution-free, and have attracted wide attention in recent years. With the development of two-dimensional layered materials, a new two-dimensional transition metal carbonitride (MXene) has attracted extensive attention due to its excellent physicochemical properties such as gas selectivity, photocatalytic properties, electromagnetic interference shielding and photothermal properties. They are widely used in gas sensors, oil/water separation, wastewater and waste-oil treatment, cancer treatment, seawater desalination, strain sensors, medical materials and some energy storage materials. In this view, we aim to emphatically summarize MXene with their properties, applications and their wettability regulation in different applications. In addition, the properties of transition metal oxides (TMOs) and other TMCs and their wettability regulation applications are also discussed.
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Affiliation(s)
- Yidan Zhang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
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Abdala O, Nabeeh A, Rehman A, Abdel-Wahab A, Hassan MK, Abdala A. Effect of Thermally Reduced Graphene on the Characteristics and Performance of Polysulfone Mixed Matrix Ultrafiltration Membranes. MEMBRANES 2023; 13:747. [PMID: 37623808 PMCID: PMC10456715 DOI: 10.3390/membranes13080747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/03/2023] [Accepted: 08/10/2023] [Indexed: 08/26/2023]
Abstract
Ultrafiltration (UF) polymeric membranes are widely used in water treatment and support desalination and gas separation membranes. In this article, we enhance the performance of Polysulfone (PSF) mixed matrix membranes (MMMs) by dispersing different concentrations of thermally reduced graphene (TRG) nanofillers. The UF PSF-TRG MMMs were fabricated via the phase inversion process, and the impact of TRG loading on the characteristics of the membrane, including hydrophilicity, porosity, roughness, and morphology, were analyzed using a contact angle measurement, atomic force microscopy (AFM), scanning electron microscopy (SEM), and dynamic mechanical analysis. Incorporating TRG into the PSF matrix led to favorable effects in the instantaneous de-mixing during phase inversion, increasing the porosity and hydrophilicity of MMMs and improving the mechanical properties of the membranes. Moreover, membrane performance was examined to remove dispersed oil from oil-water emulsion and support air-dehumidification membranes. MMM performance in terms of flux and oil rejection was superior to the control PSF membrane. Incorporating 0.25% TRG into PSF resulted in a 70% water flux increase and higher oil rejection compared to the control PSF membrane. As a support for air-dehumidification membranes, the MMM also demonstrated enhanced humidity reduction and an over 20% increase in water vapor permeance over the control PSF membrane. These results indicate that the PSF-TRG MMMs are an excellent candidate for reliable oil-water separation and as a support for air-dehumidification membranes.
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Affiliation(s)
- Omnya Abdala
- Chemical Engineering Program, Texas A&M University at Qatar, Doha P.O. Box 23874, Qatar or (O.A.); (A.N.)
- Gulf Organization for Research & Development (GORD), Qatar Science & Technology Park, Tech1 Bldg, Suite 203, Doha P.O. Box 210162, Qatar
| | - Ahmed Nabeeh
- Chemical Engineering Program, Texas A&M University at Qatar, Doha P.O. Box 23874, Qatar or (O.A.); (A.N.)
| | - Abdul Rehman
- Chemical Engineering Program, Texas A&M University at Qatar, Doha P.O. Box 23874, Qatar or (O.A.); (A.N.)
| | - Ahmed Abdel-Wahab
- Chemical Engineering Program, Texas A&M University at Qatar, Doha P.O. Box 23874, Qatar or (O.A.); (A.N.)
| | - Mohammad K. Hassan
- Center for Advanced Materials (CAM), Qatar University, Doha P.O. Box 2713, Qatar
| | - Ahmed Abdala
- Chemical Engineering Program, Texas A&M University at Qatar, Doha P.O. Box 23874, Qatar or (O.A.); (A.N.)
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Zhang Y, Yang X, Wang S, Liu J, Liu X, Chan K, Liu J. Multifunctional superhydrophobic copper mesh for efficient oil/water separation and fog collection. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lu T, Cao W, Liang H, Deng Y, Zhang Y, Zhu M, Ma W, Xiong R, Huang C. Blow-Spun Nanofibrous Membrane for Simultaneous Treatment of Emulsified Oil/Water Mixtures, Dyes, and Bacteria. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15729-15739. [PMID: 36495271 DOI: 10.1021/acs.langmuir.2c02620] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Membrane separation is of great significance due to its unique performance in treating wastewater. However, the simultaneous treatment of oily emulsions and other complex pollutants in water remains challenging. Herein, we have proposed a simple strategy to prepare a multifunctional titanium dioxide/silver nanoparticles/polyacrylonitrile (TiO2/AgNPs/PAN) nanofibrous membrane. The experimental results showed that the combination of the hierarchical structure composed of PAN nanofibers and Ag/TiO2 nanoprotrusions contributed to the superhydrophilicity and superoleophobicity (UOCA = 153.3 ± 2.0°). Further, the nanofibrous membrane exhibited a rapid gravity-driven permeate flux (>1829.37 ± 83.51 L m-2 h-1) and an ultrahigh separation efficiency (>99.9%) for the surfactant-stabilized oil/water emulsions. Moreover, due to the synergistic effect between the PAN fibers and TiO2/Ag heterojunction, Rhodamine B dye in water can be removed quickly and efficiently (up to 97.67% in 90 min). More importantly, the obtained nanofibrous membrane exhibited ultrahigh stability in different harsh environments. The design of superoleophobic nanofiber membrane with a high separation efficiency and high photocatalytic activity has great potential for practical applications in the purification of oily wastewater.
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Affiliation(s)
- Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Wenxuan Cao
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Hebin Liang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Yankang Deng
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Yingying Zhang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Miaomiao Zhu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Ranhua Xiong
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing210037, P. R. China
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Zhang Y, Jia B, Li B, Shi K, Liu B, Zhang S. Dual-functional superwetting CuCo2O4 coated stainless steel mesh for wastewater treatment: highly efficient oil/water emulsion separation and photocatalytic degradation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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8
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Kong EDH, Chau JHF, Lai CW, Khe CS, Sharma G, Kumar A, Siengchin S, Sanjay MR. GO/TiO 2-Related Nanocomposites as Photocatalysts for Pollutant Removal in Wastewater Treatment. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193536. [PMID: 36234665 PMCID: PMC9565631 DOI: 10.3390/nano12193536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 05/14/2023]
Abstract
Water pollution has been a prevalent issue globally for some time. Some pollutants are released into the water system without treatment, making the water not suitable for consumption. This problem may lead to more grave problems in the future including the destruction of the ecosystem along with the organisms inhabiting it, and illness and diseases endangering human health. Conventional methods have been implemented to remove hazardous pollutants such as dyes, heavy metals, and oil but are incapable of doing so due to economic restraints and the inability to degrade the pollutants, leading to secondary pollution. Photocatalysis is a more recently applied concept and is proven to be able to completely remove and degrade pollutants into simpler organic compounds. Titanium dioxide (TiO2) is a fine example of a photocatalyst owing to its cost-effectiveness and superb efficiency. However, issues such as the high recombination rate of photogenerated electrons along with positive holes while being only limited to UV irradiation need to be addressed. Carbonaceous materials such as graphene oxide (GO) can overcome such issues by reducing the recombination rate and providing a platform for adsorption accompanied by photocatalytic degradation of TiO2. The history and development of the synthesis of GO will be discussed, followed by the methods used for GO/TiO2 synthesis. The hybrid of GO/TiO2 as a photocatalyst has received some attention in the application of wastewater treatment due to its efficiency and it being environmentally benign. This review paper thereby aims to identify the origins of different pollutants followed by the sickness they may potentially inflict. Recent findings, including that GO/TiO2-related nanocomposites can remove pollutants from the water system, and on the photodegradation mechanism for pollutants including aromatic dyes, heavy metal and crude oil, will be briefly discussed in this review. Moreover, several crucial factors that affect the performance of photocatalysis in pollutant removal will be discussed as well. Therefore, this paper presents a critical review of recent achievements in the use of GO/TiO2-related nanocomposites and photocatalysis for removing various pollutants in wastewater treatment.
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Affiliation(s)
- Ethan Dern Huang Kong
- Nanotechnology and Catalysis Research Centre (NANOCAT), Institute for Advanced Studies (IAS), University of Malaya, Kuala Lumpur 50603, Malaysia
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, Malaysia
- Correspondence: (E.D.H.K.); (C.W.L.)
| | - Jenny Hui Foong Chau
- Nanotechnology and Catalysis Research Centre (NANOCAT), Institute for Advanced Studies (IAS), University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Chin Wei Lai
- Nanotechnology and Catalysis Research Centre (NANOCAT), Institute for Advanced Studies (IAS), University of Malaya, Kuala Lumpur 50603, Malaysia
- Correspondence: (E.D.H.K.); (C.W.L.)
| | - Cheng Seong Khe
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS (UTP), Seri Iskandar 32610, Malaysia
| | - Gaurav Sharma
- Nanshan District Key Lab for Biopolymer and Safety Evaluation, Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, College of Material Science and Engineering, Shenzhen University, Shenzhen 518060, China
- International Research Center of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173229, India
- School of Science and Technology, Global University, Saharanpur 247001, India
| | - Amit Kumar
- International Research Center of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173229, India
- School of Science and Technology, Global University, Saharanpur 247001, India
| | - Suchart Siengchin
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok (KMUTNB), Bangkok 10800, Thailand
| | - Mavinkere Rangappa Sanjay
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok (KMUTNB), Bangkok 10800, Thailand
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Yang J, Lin L, Wang Q, Ma W, Li X, Liu Z, Yang X, Xu M, Cheng Q, Zhao K, Zhao J. Engineering a superwetting membrane with spider-web structured carboxymethyl cellulose gel layer for efficient oil-water separation based on biomimetic concept. Int J Biol Macromol 2022; 222:2603-2614. [DOI: 10.1016/j.ijbiomac.2022.10.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/22/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
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Yu Y, Zhou Z, Huang G, Cheng H, Han L, Zhao S, Chen Y, Meng F. Purifying water with silver nanoparticles (AgNPs)-incorporated membranes: Recent advancements and critical challenges. WATER RESEARCH 2022; 222:118901. [PMID: 35933814 DOI: 10.1016/j.watres.2022.118901] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/19/2022] [Accepted: 07/23/2022] [Indexed: 06/15/2023]
Abstract
In the face of the growing global water crisis, membrane technology is a promising means of purifying water and wastewater. Silver nanoparticles (AgNPs) have been widely used to improve membrane performance, for antibiofouling, and to aid in photocatalytic degradation, thermal response, and electro-conductivity. However, several critical issues such as short antimicrobial periods, trade-off effects and silver inactivation seriously restrict the engineering application of AgNPs-incorporated membranes. In addition, there is controversy around the use of AgNPs given the toxic preparation process and environmental/biological risks. Hence, it is of great significance to summarize and analyze the recent developments and critical challenges in the use of AgNPs-incorporated membranes in water and wastewater treatment, and to propose potential solutions. We reviewed the different properties and functions of AgNPs and their corresponding applications in AgNPs-incorporated membranes. Recently, multifunctional, novel AgNP-incorporated membranes combined with other functional materials have been developed with high-performance. We further clarified the synergistic mechanisms between AgNPs and these novel nanomaterials and/or polymers, and elucidated their functions and roles in membrane separation. Finally, the critical challenges of AgNPs-incorporated membranes and the proposed solutions were outlined: i) Prolonging the antimicrobial cycle through long-term and controlled AgNPs release; ii) Overcoming the trade-off effect and organic fouling of the AgNPs-incorporated membranes; iii) Preparation of sustainable AgNPs-incorporated membranes; iv) Addressing biotoxicity induced by AgNPs; and v) Deactivation of AgNPs-incorporated membrane. Overall, this review provides a comprehensive discussion of the advancements and challenges of AgNPs-incorporated membranes and guides the development of more robust, multi-functional and sustainable AgNPs-incorporated membranes.
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Affiliation(s)
- Yuanyuan Yu
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; Chongqing Engineering Research Center of Rural Cleaner Production, Chongqing, 400715, China
| | - Zhongbo Zhou
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; Chongqing Engineering Research Center of Rural Cleaner Production, Chongqing, 400715, China.
| | - Guocheng Huang
- Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, 350108, China
| | - Hong Cheng
- College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Le Han
- College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Shanshan Zhao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yucheng Chen
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; Chongqing Engineering Research Center of Rural Cleaner Production, Chongqing, 400715, China
| | - Fangang Meng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China
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Yu H, Wang F, Sun C, Liu H, Tang L, Wang Y, Zhang H, Wang X. Evaluation of the self-assembled functional PPFS-P-AM composite for treating oilfield sewage. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155228. [PMID: 35421506 DOI: 10.1016/j.scitotenv.2022.155228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 04/08/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Oilfield sewage has a complex composition with large amounts of emulsified oils, polymers and surfactants. Efficient coagulants are required to purify such sewage to meet emissions standards. In this study, oxidized FeSO4·7H2O and NaHCO3were condensed by basic titration and polyferric sulfate phosphate (PPFS) was prepared by the addition of NaH2PO4·2H2O to improve its charge and stability. In addition, by adding modified palygorskite and cationic amylum, a functional polyferric sulfate phosphate, palygorskite and cationic amylum copolymer (PPFS-P-AM) composite coagulant was synthesized through self-assembly, and then used to treat oilfield sewage. The characteristic functional groups and crystal forms of the coagulant were characterized by FTIR and XRD. The zeta potential and radius of gyration (Rh) indicate that the introduction of palygorskite and cationic amylum enhance the charge neutralization and bridging adsorption abilities, respectively. The optimal dosage of cationic amylum is 5% in 80 mg·L-1 PPFS-P-AM, which provides turbidity and oil removal rates of 98% and 94%, respectively. Observation by SEM shows that the micro-morphology of PPFS-P-AM flocs has adendritic distribution with a reticular macromolecular structure that provides good sweeping performance during the sedimentation process. Finally, an analysis of its properties and performance reveals the mechanism by which PPFS-P-AM coagulates oilfield sewage. PPFS-P-AM provides better coagulation than the other studied coagulants via the synergistic effects of reinforced charge neutralization, bridging adsorption and sweeping.
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Affiliation(s)
- Hailin Yu
- Provincial Key Laboratory of Oil &Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing 163318, China
| | - Fei Wang
- Heilongjiang Daqing HuaLi BIO-TECH Company, Daqing 163414, China
| | - Chunlong Sun
- Daqing Oilfield Company, Daqing Oil Production Engineering Research Institute, Heilongjiang, Daqing 163453, China
| | - Hongsheng Liu
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing Normal University, Daqing 163412, China
| | - Long Tang
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing Normal University, Daqing 163412, China
| | - Yingjun Wang
- Provincial Key Laboratory of Oil &Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing 163318, China.
| | - Huili Zhang
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing Normal University, Daqing 163412, China
| | - Xinru Wang
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing Normal University, Daqing 163412, China
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Xiang B, Shi G, Mu P, Li J. Eco-friendly WBF/PAN nanofiber composite membrane for efficient separation various surfactant-stabilized oil-in-water emulsions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128917] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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13
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Yang J, Yu T, Wang Z, Li S, Wang L. Substrate-independent multifunctional nanostructured coating for diverse wastewater treatment. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120562] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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14
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Zhang Y, Xiao Y, Liu X, Yin Z, Cao S. Silver/carbon co-decorated hollow TiO2 catalyst drives the efficient photocatalytic degradation/catalytic hydrogenation of 4-nitrophenol. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104274] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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15
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Shah AA, Yoo Y, Park A, Cho YH, Park YI, Park H. Poly(ethylene-co-vinyl alcohol) Electrospun Nanofiber Membranes for Gravity-Driven Oil/Water Separation. MEMBRANES 2022; 12:membranes12040382. [PMID: 35448352 PMCID: PMC9028168 DOI: 10.3390/membranes12040382] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/19/2022] [Accepted: 03/29/2022] [Indexed: 12/10/2022]
Abstract
Fabrication of highly efficient oil/water separation membranes is attractive and challenging work for the actual application of the membranes in the treatment of oily wastewater and cleaning up oil spills/oil leakage accidents. In this study, hydrophilic poly(ethylene-co-polyvinyl alcohol) (EVOH) nanofiber membranes were made using an electrospinning technique for oil/water separation. The as-prepared EVOH electrospun nanofiber membranes (ENMs) exhibited a super-hydrophilic property (water contact angle 33.74°) without further treatment. As prepared, ENMs can provide continuous separation of surfactant-free and surfactant-stabilized water-in-oil emulsions with high efficiency (i.e., flux 8200 L m−2 h−1 (LMH), separation efficiency: >99.9%). In addition, their high stability (i.e., reusable, mechanically robust) would broaden the conditions under which they can be employed in the real field oil/water separation applications. Various characterization techniques (including morphology investigation, pore size, porosity, mechanical properties, and performance test) for gravity-driven oil/water separation were employed to evaluate the newly prepared EVOH ENMs.
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Affiliation(s)
- Aatif Ali Shah
- Green Carbon Research Center, Chemical Process Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (A.A.S.); (Y.Y.); (A.P.); (Y.H.C.); (Y.-I.P.)
- Department of Green Chemistry and Environmental Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
| | - Youngmin Yoo
- Green Carbon Research Center, Chemical Process Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (A.A.S.); (Y.Y.); (A.P.); (Y.H.C.); (Y.-I.P.)
| | - Ahrumi Park
- Green Carbon Research Center, Chemical Process Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (A.A.S.); (Y.Y.); (A.P.); (Y.H.C.); (Y.-I.P.)
| | - Young Hoon Cho
- Green Carbon Research Center, Chemical Process Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (A.A.S.); (Y.Y.); (A.P.); (Y.H.C.); (Y.-I.P.)
- Department of Green Chemistry and Environmental Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
| | - You-In Park
- Green Carbon Research Center, Chemical Process Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (A.A.S.); (Y.Y.); (A.P.); (Y.H.C.); (Y.-I.P.)
| | - Hosik Park
- Green Carbon Research Center, Chemical Process Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea; (A.A.S.); (Y.Y.); (A.P.); (Y.H.C.); (Y.-I.P.)
- Department of Green Chemistry and Environmental Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
- Correspondence: ; Tel.: +82-42-860-7510
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16
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Kim KY, Srivastava RP, Khang DY. Oleophilic to oleophobic wettability switching of isoporous through-hole membranes by surface structure control for low-voltage electrowetting-based oil-water separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120281] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Li G, Wang W, Liu Y, Fang Q, Lu N, Chen J, Xu S, Liu F. Solar-catalytic membranes constructed by graphene oxide and prussian blue@covalent triazine framework “active mega cubes” for ultrafast water transport. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120156] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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18
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Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil-Water Separation Processes. NANOMATERIALS 2021; 12:nano12010087. [PMID: 35010035 PMCID: PMC8746374 DOI: 10.3390/nano12010087] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/19/2021] [Accepted: 12/23/2021] [Indexed: 01/13/2023]
Abstract
The vast demand for petroleum industry products led to the increased production of oily wastewaters and has led to many possible separation technologies. In addition to production-related oily wastewater, direct oil spills are associated with detrimental effects on the local ecosystems. Accordingly, this review paper aims to tackle the oil spill cleanup issue as well as water separation by providing a wide range of graphene-based technologies. These include graphene-based membranes; graphene sponges; graphene-decorated meshes; graphene hydrogels; graphene aerogels; graphene foam; and graphene-coated cotton. Sponges and aerogels modified by graphene and reduced graphene oxide demonstrated effective oil water separation owing to their superhydrophobic/superoleophilic properties. In addition, oil particles are intercepted while allowing water molecules to penetrate the graphene-oxide-coated metal meshes and membranes thanks to their superhydrophilic/underwater superoleophobic properties. Finally, we offer future perspectives on oil water separation that are hindering the advancements of such technologies and their large-scale applications.
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19
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Electroless Ni–Sn–P plating to fabricate nickel alloy coated polypropylene membrane with enhanced performance. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119820] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Sabri M, Habibi-Yangjeh A, Rahim Pouran S, Wang C. Titania-activated persulfate for environmental remediation: the-state-of-the-art. CATALYSIS REVIEWS 2021. [DOI: 10.1080/01614940.2021.1996776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mina Sabri
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Aziz Habibi-Yangjeh
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Shima Rahim Pouran
- Social Determinants of Health Research Center, Department of Environmental and Occupational Health, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Chundong Wang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan PR China
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21
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Wang L, Zhang J, Cao Z, Zheng Y, Wang Y, Zhang C, Zuo Y, Jiao F. Evaluation of Sulfonic Cellulose Membranes on Oil–Water Separation: Performance and Modeling of Flux. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lujun Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jieyu Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Zhanfang Cao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yijian Zheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yinke Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Chongyang Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yi Zuo
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Feipeng Jiao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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22
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Padmanabhan NT, Thomas N, Louis J, Mathew DT, Ganguly P, John H, Pillai SC. Graphene coupled TiO 2 photocatalysts for environmental applications: A review. CHEMOSPHERE 2021; 271:129506. [PMID: 33445017 DOI: 10.1016/j.chemosphere.2020.129506] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 05/28/2023]
Abstract
Nanostructured photocatalysts have always offered opportunities to solve issues concerned with the environmental challenges caused by rapid urbanization and industrialization. These materials, due to their tunable physicochemical characteristics, are capable of providing a clean and sustainable ecosystem to humanity. One of the current thriving research focuses of visible-light-driven photocatalysts is on the nanocomposites of titanium dioxide (TiO2) with carbon nanostructures, especially graphene. Coupling TiO2 with graphene has proven more active by photocatalysis than TiO2 alone. It is generally considered that graphene sheets act as an electron acceptor facilitating the transfer and separation of photogenerated electrons during TiO2 excitation, thereby reducing electron-hole recombination. This study briefly reviews the fundamental mechanism and interfacial charge-transfer dynamics in TiO2/graphene nanocomposites. Design strategies of various graphene-based hybrids are highlighted along with some specialized synthetic routes adopted to attain preferred properties. Importantly, the enhancing interfacial charge transfer of photogenerated e¯CB through the graphene layers by morphology orientation of TiO2, predominated exposure of their high energy crystal facets, defect engineering, enhancing catalytic sites in graphene, constructing dedicated architectures, tuning the nanomaterial dimensionality at the interface, and employing the synergism adopted through various modifications, are systematically compiled. Portraying the significance of these photocatalytic hybrids in environmental remediation, important applications including air and water purification, self-cleaning surfaces, H2 production, and CO2 reduction to desired fuels, are addressed.
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Affiliation(s)
- Nisha T Padmanabhan
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India
| | - Nishanth Thomas
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland
| | - Jesna Louis
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India; Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology, Kerala, India
| | - Dhanu Treasa Mathew
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India
| | - Priyanka Ganguly
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland
| | - Honey John
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India; Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology, Kerala, India
| | - Suresh C Pillai
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland.
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23
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pH-Sensitive Membranes with Smart Cleaning Capability for Efficient Emulsion Separation and Pollutant Removal. MEMBRANES 2021; 11:membranes11030193. [PMID: 33799551 PMCID: PMC8000939 DOI: 10.3390/membranes11030193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 11/17/2022]
Abstract
Since anionic dyes and surfactants abundantly exist in oily wastewater, both the separation of oil/water mixture and removal of low-molecular-weight pollutants are important to realize the advanced purification of water. By grafting poly(2-dimethylaminoethyl methacrylate) (pDMAEMA) onto polyethylene (PP) membrane via ultraviolet (UV)-initiated polymerization, the obtained PP-g-pDMAEMA membrane presented positively in water and negatively in an alkaline buffer (pH 9.0), respectively. Due to the switchable surface charge, the membrane had high emulsion separation efficiency and flux recovery ratio (approximately 100%). Besides, the dye (reactive black 5, RB-5) adsorption capacity reached 140 mg/m2 in water, and approximately 90% RB-5 could be released in pH 9.0. The anionic surfactant (sodium dodecyl benzene sulfonate, SDBS) was also reversely interpreted and released by the membrane via manipulating the ambient pH. The membrane constructed in this study is supposed to realize emulsion separation with smart cleaning capability, as well as the removal of dyes and surfactants, which could be utilized for multifunctional water purification.
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24
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Asad A, Rastgar M, Sameoto D, Sadrzadeh M. Gravity assisted super high flux microfiltration polyamide-imide membranes for oil/water emulsion separation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.119019] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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26
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Qu M, Liu Q, Yuan S, Yang X, Yang C, Li J, Liu L, Peng L, He J. Facile fabrication of TiO2-functionalized material with tunable superwettability for continuous and controllable oil/water separation, emulsified oil purification, and hazardous organics photodegradation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125942] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Fabricated smart sponge with switchable wettability and photocatalytic response for controllable oil-water separation and pollutants removal. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.09.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Wang M, Xu Z, Guo Y, Hou Y, Li P, Niu QJ. Engineering a superwettable polyolefin membrane for highly efficient oil/water separation with excellent self-cleaning and photo-catalysis degradation property. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118409] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Nascimbén Santos É, László Z, Hodúr C, Arthanareeswaran G, Veréb G. Photocatalytic membrane filtration and its advantages over conventional approaches in the treatment of oily wastewater: A review. ASIA-PAC J CHEM ENG 2020. [DOI: 10.1002/apj.2533] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Érika Nascimbén Santos
- Department of Process Engineering, Faculty of Engineering University of Szeged Szeged Hungary
- Doctoral School of Environmental Sciences University of Szeged Szeged Hungary
| | - Zsuzsanna László
- Department of Process Engineering, Faculty of Engineering University of Szeged Szeged Hungary
| | - Cecilia Hodúr
- Department of Process Engineering, Faculty of Engineering University of Szeged Szeged Hungary
- Institute of Environmental and Technological Sciences University of Szeged Szeged Hungary
| | - Gangasalam Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering National Institute of Technology Tiruchirappalli India
| | - Gábor Veréb
- Department of Process Engineering, Faculty of Engineering University of Szeged Szeged Hungary
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30
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Zhu M, Qin C, Wang JJ, Sun J, Dai L. Cone-shaped titanate immobilized on polyacrylonitrile nanofibers: hierarchical architecture for effective photocatalytic activity. Dalton Trans 2020; 49:4067-4077. [PMID: 32134065 DOI: 10.1039/c9dt04934g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new photocatalytic composite material, based on flexible functional polyacrylonitrile nanofibers (denoted as f-PAN NF), was developed by depositing composite layers of α-TiO2 and cone-shaped titanate (H2Ti5O11·3H2O) successively. The α-TiO2 coated on f-PAN NF as a seed accelerated the nucleation of titanate. Cone-shaped titanate deposited on α-TiO2@f-PAN NF tightly at 35 °C with the assistance of cyanuric acid via Ostwald ripening. Due to the uniform distribution of cone-shaped titanate, the photocatalytic performance of hybrid f-PAN NF was remarkable under LED light irradiation and yielded additional photocatalytic applications as well. In addition, the composite photocatalyst exhibited better reusability and retrievability because of the special design involving a bonding between the nanofibers and layers.
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Affiliation(s)
- Mingyue Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
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31
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Li J, Zheng J, Yu Y, Su Z, Zhang L, Chen X. Facile synthesis of rGO-MoS 2-Ag nanocomposites with long-term antimicrobial activities. NANOTECHNOLOGY 2020; 31:125101. [PMID: 31770730 DOI: 10.1088/1361-6528/ab5ba7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The abuse of antibiotics has led to the emergence of numerous super resistant bacteria, which pose a serious threat to public health. Developing nanomaterials with novel modes of bactericidal activity offers the promise of fighting pathogens without the risk of causing drug resistances. Here, we used reduced graphene oxide (rGO), bulk molybdenum disulfide (MoS2) and silver nitrate (AgNO3) to synthesize a ternary nanocomposite, rGO-MoS2-Ag, via a simple one-pot method. The resulting rGO-MoS2-Ag presented as crumpled and sheet-like structures decorated with Ag nanoparticles. The minimum inhibitory concentration and minimum bactericidal concentration of rGO-MoS2-Ag against Escherichia coli were 50 and 100 μg ml-1, while Staphylococcus aureus reacted only to twice higher concentrations of 100 and 200 μg ml-1, respectively. Notably, rGO-MoS2-Ag exhibited better antibacterial activity towards E. coli and S. aureus than rGO, MoS2, or rGO-MoS2. This result can be attributed to the excellent performance of rGO-MoS2-Ag in destroying the bacterial cell membrane and inducing the generation of reactive oxygen species. The Ag+ ion release of rGO-MoS2-Ag was delayed, endowing the nanocomposite with long-term antibacterial capabilities and better biosafety. Our results indicate that the as-prepared rGO-MoS2-Ag has promising potential for application in biomedicine and public health.
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Affiliation(s)
- Jingchen Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
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32
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Li Y, Xie J, Guo C, Wang J, Liu H, Hu W. Controllable synthesis of in situ grown titanate hierarchical microspheres and subsequent chemical modifications for superhydrophobic and oil-water separation properties. RSC Adv 2020; 10:11182-11187. [PMID: 35495307 PMCID: PMC9050451 DOI: 10.1039/d0ra00381f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 03/05/2020] [Indexed: 11/21/2022] Open
Abstract
Sodium titanate nanowire-assembled microspheres on titanium mesh have been synthesized through controlling an over the surface acidification and hydrothermal process in terms of a proposed in situ "nucleation-cum-growth" solution chemistry strategy. These directly grown microspheres crystallize in an orthorhombic lepidocrocite layered structure of sodium titanate with the composition of Na1.8Ti1.95□0.05O4.8 (□ ∼ vacancy) determined by the XRD, Raman and SEM-EDX techniques. An individual microsphere has a uniform size of around 10 microns while the constituent nanowires have a diameter of 100 nm growing along the [110] orientation. Owing to the specially well-defined hierarchical structure and robust in situ interfaces, these titanate nanowire-assembled microspheres, after 2,2,3,3,4,4,5,5-octafluoro-1-pentanol (OFP) surface modification, could achieve superhydrophobicity. This work demonstrates an in situ "nucleation-cum-growth" synthesis strategy and facile functionalization towards superhydrophobicity for oil-water separation, which might extend to a broad variety of oxide nanowire systems to fabricate well-defined structures for wettability tailoring and multi-functional applications.
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Affiliation(s)
- Yong Li
- Key Laboratory of LCR Materials and Devices of Yunnan Province, School of Materials Science and Engineering, Yunnan University Kunming 650091 P. R. China
| | - Jiyang Xie
- Key Laboratory of LCR Materials and Devices of Yunnan Province, School of Materials Science and Engineering, Yunnan University Kunming 650091 P. R. China
| | - Changjin Guo
- Key Laboratory of LCR Materials and Devices of Yunnan Province, School of Materials Science and Engineering, Yunnan University Kunming 650091 P. R. China
| | - Jian Wang
- School of Physics and Astronomy, Yunnan University Kunming 650091 P. R. China
| | - Huan Liu
- Key Laboratory of LCR Materials and Devices of Yunnan Province, School of Materials Science and Engineering, Yunnan University Kunming 650091 P. R. China
| | - Wanbiao Hu
- Key Laboratory of LCR Materials and Devices of Yunnan Province, School of Materials Science and Engineering, Yunnan University Kunming 650091 P. R. China
- School of Physics and Astronomy, Yunnan University Kunming 650091 P. R. China
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33
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Preparation of a polystyrene-based super-hydrophilic mesh and evaluation of its oil/water separation performance. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117747] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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34
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Ultrathin 2D Ti3C2Tx MXene membrane for effective separation of oil-in-water emulsions in acidic, alkaline, and salty environment. J Colloid Interface Sci 2020; 561:861-869. [DOI: 10.1016/j.jcis.2019.11.069] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/16/2019] [Accepted: 11/16/2019] [Indexed: 02/06/2023]
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35
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Bao Z, Chen D, Li N, Xu Q, Li H, He J, Lu J. Superamphiphilic and underwater superoleophobic membrane for oil/water emulsion separation and organic dye degradation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117804] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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36
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Wang S, Li F, Dai X, Wang C, Lv X, Waterhouse GIN, Fan H, Ai S. Highly flexible and stable carbon nitride/cellulose acetate porous films with enhanced photocatalytic activity for contaminants removal from wastewater. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121417. [PMID: 31624002 DOI: 10.1016/j.jhazmat.2019.121417] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/06/2019] [Accepted: 10/06/2019] [Indexed: 06/10/2023]
Abstract
This study describes the successful fabrication of flexible photocatalytic films to remove contaminants from wastewater, the film is comprising sulfuric acid treated graphitic carbon nitride (SA-g-C3N4) embedded within a porous cellulose network (denoted here as CN/CA films). The SA-g-C3N4 content in the films was varied from 0 to 50 wt.%. The sulfuric acid treatment introduced carboxyl and sulfonyl groups on the surface of g-C3N4, which resulted in strong hydrogen bonding with the hydroxyl groups of cellulose acetate (so strong the partial delimination of the SA-g-C3N4 occurred on CN/CA film formation via solvent casting). The obtained films were around 10 μm in thickness, extremely flexible and durable, with the SA-g-C3N4 uniformly distributed throughout the cellulose acetate network. The CN/CA films showed excellent activities for aqueous dye degradation under direct sunlight, as well as outstanding performance for photocatalytic reduction of Cr (VI). The photocatalytic activity of the CN/CA films at the optimum SA-g-C3N4 content of 50 wt.% was far higher than that of pristine SA-g-C3N4, highlighting a main advantage of the composite film fabrication strategy introduced here. Further, the CN/CA films showed excellent stability and reusability, with no loss in activity seen over 5 cycles of dye degradation.
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Affiliation(s)
- Siyu Wang
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China
| | - Fei Li
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China
| | - Xiaohui Dai
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China
| | - Chuanjun Wang
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China
| | - Xintao Lv
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China
| | - Geoffrey I N Waterhouse
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China; School of Chemical Sciences, The University of Auckland, Auckland 1142, New Zealand
| | - Hai Fan
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China.
| | - Shiyun Ai
- School of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, PR China.
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Yang G, Zhang D, Zhu G, Zhou T, Song M, Qu L, Xiong K, Li H. A Sm-MOF/GO nanocomposite membrane for efficient organic dye removal from wastewater. RSC Adv 2020; 10:8540-8547. [PMID: 35497862 PMCID: PMC9049961 DOI: 10.1039/d0ra01110j] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 02/12/2020] [Indexed: 12/16/2022] Open
Abstract
The instability of graphene oxide (GO) membranes in aqueous solutions restricts their application in wastewater treatment through the membrane separation technology. In this work, a nanocomposite membrane (Sm-MOF/GO) composed of samarium metal–organic frameworks (Sm-MOFs) and GO nanosheets was successfully fabricated via the filtration of the corresponding Sm-MOF/GO dispersions. The in situ growth of Sm-MOF with aqueous stability on the GO sheets prevented the adjacent GO layers from expanding in aqueous solutions, thus endowing the prepared Sm-MOF/GO membrane with a stable membrane skeleton structure. Besides, the successful loading of Sm-MOF enlarged the layer space of the composite membrane, which was beneficial for higher permeance. The optimization of the Sm-MOF loading contents was also investigated to prepare M-X (where X represents the mass ratio of the MOF raw material to the total mass of the reactants). Subsequently, the fabricated M-0.31 possessed a high permeance of 26 L m−2 h−1 bar−1, which was 3 times higher than that of a pure GO membrane; moreover, high rejections (>91%) to rhodamine B and methylene blue were obtained. After continuous 5.5 h filtration, the excellent rejection was still maintained as expected, indicating the long-term stability of M-0.31. A nanocomposite membrane composed of samarium metal-organic frameworks and graphene oxide nanosheets was fabricated for organic dye removal.![]()
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Affiliation(s)
- Guohai Yang
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Daqing Zhang
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Gen Zhu
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Tingrong Zhou
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Manting Song
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Lulu Qu
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Kecai Xiong
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Haitao Li
- School of Chemistry and Material Science
- Jiangsu Normal University
- Xuzhou 221116
- China
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38
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Han N, Wang W, Lv X, Zhang W, Yang C, Wang M, Kou X, Li W, Dai Y, Zhang X. Highly Efficient Purification of Multicomponent Wastewater by Electrospinning Kidney-Bean-Skin-like Porous H-PPAN/rGO- g-PAO@Ag +/Ag Composite Nanofibrous Membranes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:46920-46929. [PMID: 31756069 DOI: 10.1021/acsami.9b16889] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Due to the complexity of harmful wastewater components, environmental and multifunctional materials are required for sewage purification. In this paper, a novel kidney-bean-skin-like hydrophilic porous polyacrylonitrile/reduced graphene oxide-g-poly(amidoxime)-loaded Ag+ (H-PPAN/rGO-g-PAO@Ag+/Ag) composite nanofiber membrane was fabricated by combining electrospinning and hydrolysis methods. The spinning solution was pumped at a rate of 0.4 mL/h with the voltage set at a constant value of 23 kV. Then, some of the -CN groups switched to hydrophilic -COOH groups via a hydrolysis method, which acts as a linker of GO-g-PAN, Ag+, and the polyacrylonitrile (PAN) matrix. A further step of chelation and thermal treatment were used for generating Schottky junctions between rGO-g-PAO@Ag+ and Ag. After five-cycle tests, it exhibited outstanding mechanical properties ensuring the filtration and purification performance of the H-PPAN/rGO-g-PAO@Ag+/Ag composite nanofiber membrane (i.e., the tensile strength was still 7.21 MPa, and the elongation was 61.53%) for simulated wastewater. The methods of thermal treatment and high-pressure Hg lamp irradiation promoted the reduction of GO to rGO and Ag+ to Ag particles, which endows the final product H-PPAN/rGO-g-PAO@Ag+/Ag with excellent photocatalytic and bactericidal properties. Its catalytic efficiency for dyes benzoic acid (BA), Rhodamine B (RhB), methylene blue (MB), and methyl orange (MO) was up to 99.8, 98, 95, and 91%. The antibacterial rate was 100% against Escherichia coli and 99% against Staphylococcus aureus. More importantly, the photocatalytic and antibacterial PAN-based nanofiber membrane can be simply scaled up, which provides the membrane with great potential in highly efficient wastewater treatment and augmenting water supply.
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Affiliation(s)
- Na Han
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
- Textile Engineering, Chemistry and Science Department , North Carolina State University , Raleigh , North Carolina 27606 , United States
| | - Weijing Wang
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
| | - Xingshuai Lv
- School of Physics, State Key Laboratory of Crystal Materials , Shandong University , Jinan 250100 , China
| | - Wenxin Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
| | - Chao Yang
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
| | - Menglu Wang
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
| | - Xiaohui Kou
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
| | - Wei Li
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
| | - Ying Dai
- School of Physics, State Key Laboratory of Crystal Materials , Shandong University , Jinan 250100 , China
| | - Xingxiang Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin 300387 , China
- School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
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Hariprasad R, Vinothkannan M, Kim AR, Yoo DJ. SPVdF-HFP/SGO nanohybrid proton exchange membrane for the applications of direct methanol fuel cells. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1660672] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ranganathan Hariprasad
- Graduate School, Department of Energy Storage/Conversion Engineering, Hydrogen and Fuel Cell Research Center, Chonbuk National University , Jeonju , Jeollabuk-do , Republic of Korea
| | - Mohanraj Vinothkannan
- Graduate School, Department of Energy Storage/Conversion Engineering, Hydrogen and Fuel Cell Research Center, Chonbuk National University , Jeonju , Jeollabuk-do , Republic of Korea
- Department of Life Science, Chonbuk National University , Jeonju , Jeollabuk-do , Republic of Korea
| | - Ae Rhan Kim
- Department of Bioenvironmental Chemistry and R&D Center for CANUTECH, Business Incubation Center, Chonbuk National University , Jeonju , Jeollabuk-do , Republic of Korea
| | - Dong Jin Yoo
- Graduate School, Department of Energy Storage/Conversion Engineering, Hydrogen and Fuel Cell Research Center, Chonbuk National University , Jeonju , Jeollabuk-do , Republic of Korea
- Department of Life Science, Chonbuk National University , Jeonju , Jeollabuk-do , Republic of Korea
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40
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Pan Z, Cao S, Li J, Du Z, Cheng F. Anti-fouling TiO2 nanowires membrane for oil/water separation: Synergetic effects of wettability and pore size. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.11.056] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Du Q, Chen Z, Jiang X, Pang J, Jiang Z, Luan J. An oil/water separation nanofibrous membrane with a 3-D structure from the blending of PES and SPEEK. HIGH PERFORM POLYM 2019. [DOI: 10.1177/0954008318825297] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new nanofibrous membrane (NFM) was prepared by blending polyethersulfone (PES) and sulfonated poly(ether ether ketone) (SPEEK) via electrospinning. The membrane exhibits good thermal stability and high mechanical strength. The hydrophilicity of the membrane could be controlled by adjusting the mass ratio of PES to SPEEK. PES acts as the backbone fiber and provides high mechanical strength, while SPEEK provides hydrophilic functional groups due to the strong hydrophilicity of the sulfonic group. The test results show that the composite NFM integrates the advantages of the two polymers. Simple adjustment of the weight ratios of the two polymers can enable an adjustable flux so that the membrane can be used for different kinds of oil/water separation. The results show that NFMs can not only separate immiscible oil/water systems but also separate oil-in-water emulsions. The immiscible oil/water separation process was driven only by gravity and had a high flux of 1119.63 Lm−2 h−1. This separation process conserves energy, which is beneficial for environmental protection. The separation flux of the oil-in-water emulsion was 758.71 Lm−2 h−1 bar−1 based on measurements under different pressures, and the separation purity total organic carbon was below 50 ppm. This work indicates that a membrane comprised of PES and SPEEK has excellent performance and can be used in different fields.
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Affiliation(s)
- Qiong Du
- National and Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun, People’s Republic of China
| | - Zheng Chen
- National and Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun, People’s Republic of China
| | - Xiangyu Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Jinhui Pang
- National and Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun, People’s Republic of China
| | - Zhenhua Jiang
- National and Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun, People’s Republic of China
| | - Jiashuang Luan
- National and Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun, People’s Republic of China
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42
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Cheshme Khavar AH, Moussavi G, Mahjoub A, Yaghmaeian K, Srivastava V, Sillanpää M, Satari M. Novel magnetic Fe3O4@rGO@ZnO onion-like microspheres decorated with Ag nanoparticles for the efficient photocatalytic oxidation of metformin: toxicity evaluation and insights into the mechanisms. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01381d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Emerging water contaminants, including pharmaceutical and personal care products, have become a major concern in water pollution, and several efforts have been made for the efficient removal of these contaminants.
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Affiliation(s)
- Amir Hossein Cheshme Khavar
- Department of Environmental Health Engineering
- Faculty of Medical Sciences
- Tarbiat Modares University
- Tehran
- Iran
| | - Gholamreza Moussavi
- Department of Environmental Health Engineering
- Faculty of Medical Sciences
- Tarbiat Modares University
- Tehran
- Iran
| | - Alireza Mahjoub
- Department of Chemistry
- Faculty of Basic Sciences
- Tarbiat Modares University
- Tehran
- Iran
| | - Kamyaer Yaghmaeian
- Department of Environmental Health Engineering
- School of Public Health
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Varsha Srivastava
- Department of Green Chemistry
- School of Engineering Science
- Lappeenranta-Lahti University of Technology
- FI-50130 Mikkeli
- Finland
| | - Mika Sillanpää
- Department of Green Chemistry
- School of Engineering Science
- Lappeenranta-Lahti University of Technology
- FI-50130 Mikkeli
- Finland
| | - Mohammad Satari
- Department of Biology
- Faculty of Sciences
- Malayer University
- Malayer
- Iran
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43
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Cao J, Zhang J, Zhu Y, Wang S, Wang X, Lv K. Novel Polymer Material for Efficiently Removing Methylene Blue, Cu(II) and Emulsified Oil Droplets from Water Simultaneously. Polymers (Basel) 2018; 10:polym10121393. [PMID: 30961319 PMCID: PMC6401864 DOI: 10.3390/polym10121393] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 12/09/2018] [Accepted: 12/14/2018] [Indexed: 02/04/2023] Open
Abstract
The pollution of water resources has become a worldwide concern. The primary pollutants including insoluble oil, toxic dyes, and heavy metal ions. Herein, we report a polymer adsorbent, named SPCT, to remove the above three contaminants from water simultaneously. The preparation process of SPCT contains two steps. Firstly, a hydrogel composed of sulfonated phenolic resin (SMP) and polyethyleneimine (PEI) was synthesized using glutaraldehyde (GA) as the crosslinking agent, and the product was named SPG. Then SPCT was prepared by the reaction between SPG and citric acid (CA) at 170 °C. SPCT exhibited an excellent performance for the removal of methylene blue (MB) and Cu(II) from aqueous solution. For a solution with a pollutant concentration of 50 mg L−1, a removal efficiency of above 90% could be obtained with a SPCT dosage of 0.2 g L−1 for MB, or a SPCT dosage of 0.5 g L−1 for Cu(II), respectively. SPCT also presented an interesting wettability. In air, it was both superhydrophilic and superoleophilic, and it was superoleophobic underwater. Therefore, SPCT could successfully separate oil-in-water emulsion with high separation efficiency and resistance to oil fouling. Additionally, SPCT was easily regenerated by using dilute HCl solution as an eluent. The outstanding performance of SPCT and the efficient, cost-effective preparation process highlight its potential for practical applications.
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Affiliation(s)
- Jie Cao
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China.
| | - Jianbei Zhang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China.
| | - Yuejun Zhu
- State Key Lab of Offshore Oil Exploitation, Beijing 100028, China.
- CNOOC Research Institute Co. Ltd., Beijing 100028, China.
| | - Shanshan Wang
- State Key Lab of Offshore Oil Exploitation, Beijing 100028, China.
- CNOOC Research Institute Co. Ltd., Beijing 100028, China.
| | - Xiujun Wang
- State Key Lab of Offshore Oil Exploitation, Beijing 100028, China.
- CNOOC Research Institute Co. Ltd., Beijing 100028, China.
| | - Kaihe Lv
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China.
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45
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You Z, Xu H, Sun Y, Zhang S, Zhang L. Effective treatment of emulsified oil wastewater by the coagulation–flotation process. RSC Adv 2018; 8:40639-40646. [PMID: 35557887 PMCID: PMC9091706 DOI: 10.1039/c8ra06565a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 11/12/2018] [Indexed: 11/28/2022] Open
Abstract
Ship emulsified oil wastewater was used as the research object in this study. The highly efficient coagulant demulsification degreasing mechanism and microbubble flotation technology were combined and the effects of coagulant type and dosage amount on the demulsification of emulsified oil wastewater were evaluated. The influence of the mixed coagulation effect of pH values, temperature, and hydraulic condition parameters were determined and water intake, air intake, and oil content were regulated. The coagulant for the demulsification of emulsified oil wastewater was screened; the dosage was 500 mg L−1, and the removal capacity of the coagulant was in the following order: polyaluminum ferric chloride (PAFC) > polyaluminum chloride (PAC) > polysilicate aluminum ferric sulfate (PSAFS) > alum > Al2(SO4)3 > polyferric sulfate > FeCl3. Polyacrylamide (PAM) with added water was used to further reduce the oil content. The PAFC, PAC, and PSAFS were selected as coagulation–air flotation dynamic test alternative agents. The investment quantities of PAFC, PSAFS and PAM were 300 mg L−1, 300 mg L−1 and 30 mg L−1, respectively. The stirring time was 5 min, the pH value was 6.5–6.9, the flow rate was 0.25 m3 h−1, the oil content of the emulsified oil wastewater was 3000–5000 mg L−1 and the effluent oil was stable below 15 ppm. The microbubble generation device using air flotation effluent was used in the two air flotation treatments to enhance the device efficiency. The air flotation device adopted the structural design of the upper part of the water inlet and the lower part of the micro-air bubble, which can increase the collision probability of the microbubble and improve the efficiency of oil removal. Ship emulsified oil wastewater was used as the research object in this study.![]()
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Affiliation(s)
- Zhaoyang You
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction
- College of Urban Construction
- Nanjing Tech University
- Nanjing
- China
| | - Haiyang Xu
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction
- College of Urban Construction
- Nanjing Tech University
- Nanjing
- China
| | - Yongjun Sun
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction
- College of Urban Construction
- Nanjing Tech University
- Nanjing
- China
| | - Shujuan Zhang
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction
- College of Urban Construction
- Nanjing Tech University
- Nanjing
- China
| | - Li Zhang
- Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction
- College of Urban Construction
- Nanjing Tech University
- Nanjing
- China
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