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Tang G, Li Z, Ding C, Zhao J, Xing X, Sun Y, Qiu X, Wang L. A cigarette filter-derived biomimetic cardiac niche for myocardial infarction repair. Bioact Mater 2024; 35:362-381. [PMID: 38379697 PMCID: PMC10876615 DOI: 10.1016/j.bioactmat.2024.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/24/2024] [Accepted: 02/07/2024] [Indexed: 02/22/2024] Open
Abstract
Cell implantation offers an appealing avenue for heart repair after myocardial infarction (MI). Nevertheless, the implanted cells are subjected to the aberrant myocardial niche, which inhibits cell survival and maturation, posing significant challenges to the ultimate therapeutic outcome. The functional cardiac patches (CPs) have been proved to construct an elastic conductive, antioxidative, and angiogenic microenvironment for rectifying the aberrant microenvironment of the infarcted myocardium. More importantly, inducing implanted cardiomyocytes (CMs) adapted to the anisotropic arrangement of myocardial tissue by bioengineered structural cues within CPs are more conducive to MI repair. Herein, a functional Cig/(TA-Cu) CP served as biomimetic cardiac niche was fabricated based on structural anisotropic cigarette filter by modifying with tannic acid (TA)-chelated Cu2+ (TA-Cu complex) via a green method. This CP possessed microstructural anisotropy, electrical conductivity and mechanical properties similar to natural myocardium, which could promote elongation, orientation, maturation, and functionalization of CMs. Besides, the Cig/(TA-Cu) CP could efficiently scavenge reactive oxygen species, reduce CM apoptosis, ultimately facilitating myocardial electrical integration, promoting vascular regeneration and improving cardiac function. Together, our study introduces a functional CP that integrates multimodal cues to create a biomimetic cardiac niche and provides an effective strategy for cardiac repair.
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Affiliation(s)
- Guofeng Tang
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
| | - Zhentao Li
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- Thoracic and Cardiovascular Surgery, The Tenth Affiliated Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, Guangdong, 523058, PR China
| | - Chengbin Ding
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
| | - Jiang Zhao
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
| | - Xianglong Xing
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
| | - Yan Sun
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
| | - Xiaozhong Qiu
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
| | - Leyu Wang
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou, Guangdong, 510515, PR China
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Song Y, Liu Z, Sun Z, Du W, Wang Z, Hu Z, Ma M, Wang Z. Flow field analysis of cigarette filter through micro-CT-based geometries and CFD simulation. Heliyon 2024; 10:e29253. [PMID: 38644843 PMCID: PMC11033124 DOI: 10.1016/j.heliyon.2024.e29253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 02/17/2024] [Accepted: 04/03/2024] [Indexed: 04/23/2024] Open
Abstract
The cigarette filter is an essential component of modern cigarettes and studying the flow distribution within the cigarette filter is of great significance in reducing the harm of cigarettes and optimizing smoking sensations. As the object of numerical simulation research, a three-dimensional model of the cigarette was accurately constructed through micro-CT reverse engineering, achieving a scanning accuracy of 4.05 μm. An overall porous media model of the cigarette filter was established to characterize the pressure distribution inside the filter. Based on the three-dimensional reconstruction, a local simulation model of the cavity-filtered filter was created by extracting a 1/36 geometric model. The simulation results of the overall porous media model of the cigarette filter were used as the pressure boundary conditions for the local simulation model of the cavity-filtered filter, and the effects of the wrapped paper and cavity on the flow field were analyzed. The results show that the simulated pressure drop in the overall porous media model of the cigarette filter had a deviation of less than 3.5% compared to the experimental results. This suggests that the porous media model can effectively predict the changes in pressure drop within the filter. When both wrapped paper and cavity were present, the velocity at the interface between acetate fiber and wrapped paper increased by 141.54%, while the pressure approached 0 Pa. Similarly, at the interface between acetate fiber and cavity, the velocity increased by 130.77%. It indicates that both wrapped paper and cavity significantly influenced the flow field characteristics within the cigarette filter. Additionally, as the porosity of the wrapped paper gradually increased from 0.69 to 0.99 in the radial direction, the fluid velocity increased by 14.46%, while the fluid pressure decreased by 29.09%. These changes were particularly evident when the porosity was below 0.87.
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Affiliation(s)
- Yunfei Song
- The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, China
| | - Zixuan Liu
- School of Mechanical Engineering, Wuhan Polytechnical University, Wuhan, 430048, China
| | - Zhiwei Sun
- Technology Center of China Tobacco Hunan Industrial Co., Ltd., Changsha, 410007, China
| | - Wen Du
- Technology Center of China Tobacco Hunan Industrial Co., Ltd., Changsha, 410007, China
| | - Zhiguo Wang
- Technology Center of China Tobacco Hunan Industrial Co., Ltd., Changsha, 410007, China
| | - Zhigang Hu
- School of Mechanical Engineering, Wuhan Polytechnical University, Wuhan, 430048, China
| | - Ming Ma
- School of Mechanical Engineering, Wuhan Polytechnical University, Wuhan, 430048, China
| | - Zhiyong Wang
- School of Mechanical Engineering, Wuhan Polytechnical University, Wuhan, 430048, China
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Farzadkia M, Yavary Nia M, Yavari Nia M, Shacheri F, Nourali Z, Torkashvand J. Reduction of the environmental and health consequences of cigarette butt recycling by removal of toxic and carcinogenic compounds from its leachate. Environ Sci Pollut Res Int 2024; 31:23942-23950. [PMID: 38436848 DOI: 10.1007/s11356-024-32703-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/25/2024] [Indexed: 03/05/2024]
Abstract
Cigarette butt is a hazardous waste, and its management faces many challenges. The generation of leachate containing many pollutants including heavy metals is one of the limitations of recycling cigarette butts. The aim of this study was to reduce organic compounds and heavy metals in leachate resulting from cigarette butt recycling in an electrocoagulation reactor. For this purpose, two samples, including freshly smoked cigarette butts and littered cigarette butts, were processed and the treatment of leachate resulting from them was studied in an electrocoagulation reactor. The efficiency of leachate treatment was investigated in the treatment time of 10-40 min and current intensity of 20-100 mA. The results showed that the minimum reduction of chemical oxygen demand and turbidity was 25.3% and 33.4%, respectively. Increasing the current intensity and treatment time increased the efficiency of removing turbidity and chemical oxygen demand up to 47.1% and 41.2%, respectively, in optimum conditions. The reduction of nickel, chromium, cadmium, and lead in the lowest current density and minimum treatment time was more than 90%, which increased to more than 99% with the increase of the current density and treatment time. The use of electrocoagulation is a suitable solution to reduce heavy metals in leachate resulting from cigarette butt recycling, while the proper reduction of organic compounds in this type of leachate requires further treatment processes.
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Affiliation(s)
- Mahdi Farzadkia
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mohsen Yavary Nia
- Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL, USA
| | - Melika Yavari Nia
- Department of Soil, Water and Ecosystem Sciences, University of Florida, Gainesville, FL, USA
| | - Fatemeh Shacheri
- Department of Biological Systems Engineering, Virginia Tech University, Blacksburg, VA, USA
| | - Zahra Nourali
- Department of Biological Systems Engineering, Virginia Tech University, Blacksburg, VA, USA
| | - Javad Torkashvand
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
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Kang H, Li R, Wang H, Zheng Y, Chen S. Adverse effects of cigarette filter silica on lungs: Comparison with natural crystalline silica particles. Toxicol Ind Health 2024; 40:59-68. [PMID: 38054809 DOI: 10.1177/07482337231220692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
As a common additive in cigarette filters, nanosilica has been implemented to reduce the release of harmful substances in cigarette smoke. However, the potential risk of occupational exposure for cigarette factory workers is unknown. We collected physical examination data from 710 cigarette factory workers to evaluate the adverse effects of cigarette filter silica exposure. We also established mouse models induced by cigarette filter silica and crystalline silica separately to compare the lung inflammation, pulmonary function, apoptosis, and fibrosis of the two models. Workers in the rolling and packing workshop exposed to cigarette filter silica had a higher rate of abnormal lung function (17.75%) than those in the cutting workshop (0.87%). Animal experiments showed that compared with the same dose of crystalline silica, cigarette filter silica resulted in higher levels of inflammatory factors in the bronchoalveolar lavage fluid (BALF) of mice at day 7, and lower levels of total lung capacity (TLC), inspiratory capacity (IC), vital capacity (VC), and forced vital capacity (FVC) in mice at day 28. Additionally, both exposed groups of mice showed increased levels of caspase 3, collagen I (Col-Ⅰ), α-smooth muscle actin (α-SMA) and hydroxyproline (HYP) in the lungs, as well as collagen accumulation and fibrous nodules at day 28, with no significant difference between the two groups. The results suggested that cigarette filter silica caused more severe early lung inflammation and late ventilation impairment than the same dose of crystalline silica. In the future, we need to pay more attention to nanosilica protection in cigarette factories to prevent pulmonary dysfunction in workers.
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Affiliation(s)
- Huimin Kang
- School of Medicine, Hunan Normal University, Changsha, China
| | - Rou Li
- School of Medicine, Hunan Normal University, Changsha, China
| | - Hanqin Wang
- School of Medicine, Hunan Normal University, Changsha, China
| | - Yunfan Zheng
- School of Medicine, Hunan Normal University, Changsha, China
| | - Shi Chen
- School of Medicine, Hunan Normal University, Changsha, China
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Zamengo L, Frison G, Bettin C, Badocco D, Ghezzo N, Di Pino G, Favaretto A, Pani A. Predicting heroin potency from the analysis of paraphernalia: A tool for overdose prevention projects. Forensic Sci Int 2023; 352:111834. [PMID: 37806165 DOI: 10.1016/j.forsciint.2023.111834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 09/02/2023] [Accepted: 09/18/2023] [Indexed: 10/10/2023]
Abstract
In recent years, fatal and non-fatal heroin-related overdoses have increased in northeastern Italy, and the change in potency of heroin available at street level has been identified as a prominent factor associated with acute toxicity. Two very different products, high-potency and low-potency heroin were becoming available on the street, and no clear morphological characteristics could be used to easily distinguish them. A theoretical model for predicting heroin potency from rapid analysis of cigarette filters was developed as part of an overdose prevention project. The model was derived from the analysis of real heroin samples and exploits the common presence of caffeine in heroin as an adulterant. It was tested on laboratory prepared filters, real filters used to prepare heroin injections, and other paraphernalia. The model showed strong predictive ability and was used to implement a rapid alert system to inform drug users and healthcare institutions about the potency of heroin or other psychoactive substances circulating in the area. Cigarette filters were used as standard material, but other paraphernalia were successfully tested. The developed model is a dynamic tool whose parameters can be updated according to the market characteristics, so it can be useful for laboratories involved in drug analysis and similar prevention programs.
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Affiliation(s)
- Luca Zamengo
- Laboratory of Clinical and Forensic Toxicology, DMPO Department, AULSS 3, Venice, Italy.
| | - Giampietro Frison
- Laboratory of Clinical and Forensic Toxicology, DMPO Department, AULSS 3, Venice, Italy
| | - Chiara Bettin
- Laboratory of Clinical and Forensic Toxicology, DMPO Department, AULSS 3, Venice, Italy
| | - Denis Badocco
- Department of Chemical Sciences, University of Padua, Padua, Italy
| | | | - Giuseppe Di Pino
- Harm reduction activities, Department of Social Services, Municipality of Venice, Italy
| | - Alberto Favaretto
- Harm reduction activities, Department of Social Services, Municipality of Venice, Italy
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Vanapalli KR, Sharma HB, Anand S, Ranjan VP, Singh H, Dubey BK, Mohanty B. Cigarettes butt littering: The story of the world's most littered item from the perspective of pollution, remedial actions, and policy measures. J Hazard Mater 2023; 453:131387. [PMID: 37080035 DOI: 10.1016/j.jhazmat.2023.131387] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/06/2023] [Accepted: 04/06/2023] [Indexed: 05/03/2023]
Abstract
Cigarettes butt (CB) is one of the most littered items on the planet. This paper critically analyzes the factors responsible for CB littering, and associated environmental ramifications, and reviews all the possible technical, behavioural, and policy-based solutions. Even while smoking has declined globally, middle-income nations have seen an increase in consumption, which may be related to increased affordability and a lack of public awareness. The smokers' individual beliefs and habits, environmental ignorance, covert littering as a result of social taboos associated with smoking, and behavioural gaps between intention and action might all be contributing factors to CBs' littering behaviour. The low biodegradability of cellulose acetate filters and toxic chemical leaching from CBs are the most important aspects of CB environmental toxicity. The small size and low economic value of CB contribute to the inefficiencies of current waste collection and management systems. The current research on CB valorisation includes fired-clay bricks, asphalt concrete, biofilms, sound absorber, cellulose pulp, pesticides, and insecticides as downstream mitigation strategies. This study highlights the urgent need for policymakers to enforce regulations enabling innovative cigarette designs, the creation of deposit-refund schemes, extended producer responsibility and stringent waste collection mechanisms. Adopting gentler marketing strategies and non-confrontational behavioural nudges could result in an overall reduction in CB pollution.
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Affiliation(s)
- Kumar Raja Vanapalli
- Department of Civil Engineering, National Institute of Technology, Mizoram, Aizawl, Mizoram 796012, India; School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Hari Bhakta Sharma
- Department of Civil Engineering, Sikkim Manipal Institute of Technology, Rangpo, Sikkim 737136, India; Department of Civil Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
| | - Shaivya Anand
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Ved Prakash Ranjan
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Hemant Singh
- School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Brajesh K Dubey
- School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India; Department of Civil Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
| | - Bijayananda Mohanty
- Department of Civil Engineering, National Institute of Technology, Mizoram, Aizawl, Mizoram 796012, India
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Li G, Yin T, Sun Z, Wu W, Sun C, He C, Pan X, Liu L, Chang H. Kinetic optimization of odor adsorption with acetate fiber cloth prepared from waste cigarette filter. Sci Total Environ 2022; 845:157243. [PMID: 35817110 DOI: 10.1016/j.scitotenv.2022.157243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/05/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Odor pollution with NH3 as major contributor is a notorious issue that strongly influences our living environment. NH3 removal with acetate fiber cloth (AFC) prepared from waste cigarette filter is an economic feasible approach for simultaneous solid wastes disposal. Herein, waste cigarette filter was used to prepare AFC through hot-pressing approach, which was convinced to have good adsorption efficiency on NH3 due to large specific surface area. Effects of hot-pressing temperature, pressure and pressing time on AFC mechanical property and NH3 adsorption efficiencies were optimized by response surface method. As results, hot-pressing treatment improved the specific surface area of AFC to 9.530 m2/g, and thus enhanced NH3 adsorption efficiency to 68.73 % under hot-pressing temperature of 146 °C, pressure of 12.5 kPa and pressing time of 33 min. While the optimal tensile strength of AFC was obtained as 90.43 N under hot-pressing temperature of 140 °C, pressure of 15.0 kPa and pressing time of 30 min. The work provided an economic feasible approach for waste cigarette filter recycling and odor control.
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Affiliation(s)
- Gang Li
- College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture & Rural Affairs, Zhengzhou 450002, China.
| | - Taikun Yin
- College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture & Rural Affairs, Zhengzhou 450002, China
| | - Zhan Sun
- College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture & Rural Affairs, Zhengzhou 450002, China
| | - Wenbo Wu
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Chaofeng Sun
- College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
| | - Chao He
- College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture & Rural Affairs, Zhengzhou 450002, China
| | - Xiaohui Pan
- College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture & Rural Affairs, Zhengzhou 450002, China
| | - Liang Liu
- College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture & Rural Affairs, Zhengzhou 450002, China
| | - Haixing Chang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
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Li W, Tian X, Li X, Liu J, Li C, Feng X, Shu C, Yu ZZ. An environmental energy-enhanced solar steam evaporator derived from MXene-decorated cellulose acetate cigarette filter with ultrahigh solar steam generation efficiency. J Colloid Interface Sci 2022; 606:748-57. [PMID: 34418755 DOI: 10.1016/j.jcis.2021.08.043] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/25/2021] [Accepted: 08/07/2021] [Indexed: 11/20/2022]
Abstract
Although solar energy is promising for water purification, there is still a room for further improving the solar steam generation efficiency. Herein, an environmental energy-enhanced solar steam evaporator is fabricated by immersing a cellulose acetate fiber-based cigarette filter (CF) in an aqueous solution of polyvinyl alcohol (PVA) followed by freeze-drying and decorating with MXene sheets. The presence of MXene is to absorb solar light and convert solar energy to thermal energy for efficient water evaporation, while the porous PVA network generated inside the pores of the filter during the freeze-drying process accommodates the dispersed MXene sheets and interconnects the CF and MXene. Because of the constructed PVA/MXene network inside the CF porous architecture and the hydrophilic feature of both MXene and PVA, the resultant MXene/PVA modified CF (MPCF) is highly hydrophilic and competent for rapid upward transfer of water. Interestingly, in addition to the normal energy input by the incident solar light, the large-area sidewall of MPCF gains thermal energy from the environment in the forms of heat convection and heat radiation to enhance the solar steam generation efficiency, resulting in an ultrahigh water evaporation rate of 3.38 kg m-2 h-1 with an outstanding evaporation efficiency of 132.9%.
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Axelrod T, Eltzov E, Lerman M, Harpaz D, Marks RS. Cigarette smoke toxicity modes of action estimated by a bioluminescent bioreporter bacterial panel. Talanta 2021; 226:122076. [PMID: 33676644 DOI: 10.1016/j.talanta.2020.122076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 12/15/2022]
Abstract
Cigarette smoking is considered to be a risk factor for several chronic diseases and even premature death. However, despite the importance of this detrimental habit, little seems known in terms of the overall toxicity potential of its ingredients in humans. In this study, a panel of genetically modified bioluminescent bioreporter bacteria was used to evaluate its usefulness in estimating the cigarette smoke's complex molecular mixture on a bacterial toxicity-bioreporter panel, both filtered or unfiltered. This work enabled to confirm the usefulness of cigarette filters, with better protection found in higher priced brands despite both having genotoxic and cytotoxic attributes. Quorum sensing interference was also shown, which may explain why cigarette smokers are at greater risk for pulmonary infections. Moreover, the findings of this study support the fact that the filter is a dominating contributor to reducing the harm caused by cigarette smoke. Increased efforts should be conducted to reduce the harmful effects of cigarette smoke, via increasingly effective filters. To conclude, the panel of bioreporter bacteria was found to be useful in the evaluation of the general effect of the toxic mixture found in cigarette smoke and therefore has the potential to be used in cigarette research, helping researchers pinpoint the reduction of toxicity when working with filter improvement.
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Affiliation(s)
- Tim Axelrod
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Faculty of Engineering Science, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Evgeni Eltzov
- Institute of Postharvest and Food Science, Department of Postharvest Science, The Volcani Center, Agricultural Research Organization, Rishon LeZion, 7505101, Israel
| | - Merav Lerman
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Faculty of Engineering Science, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Dorin Harpaz
- Institute of Postharvest and Food Science, Department of Postharvest Science, The Volcani Center, Agricultural Research Organization, Rishon LeZion, 7505101, Israel; Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 761001, Israel
| | - Robert S Marks
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Faculty of Engineering Science, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel; National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel; The Ilse Katz Center for Meso and Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel.
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Torkashvand J, Farzadkia M. A systematic review on cigarette butt management as a hazardous waste and prevalent litter: control and recycling. Environ Sci Pollut Res Int 2019; 26:11618-11630. [PMID: 30859444 DOI: 10.1007/s11356-019-04250-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/14/2019] [Indexed: 06/09/2023]
Abstract
Annually, over 5.5 trillion cigarettes are produced worldwide, and it is estimated that 4.5 trillion cigarette butts (CBs) are still being littered in the world. The dispersal of the CBs has caused this hazardous waste to be considered as one of the most important litters and environmental risks all over the world. This systematic study with the search protocol definition and keyword identification was developed to find the CBs control and recycling methods by searching in five scientific databases. Founded articles were monitored and finally, 35 related articles were selected and studied by the authors. The results of this study showed that CBs recycling methods have been tested in 10 specific categories all over the world. The CBs have been applied without any pre-processing methods in the bricks and asphalt production. However, other applications of the CBs such as the absorbent material production, vector control, and use as a biofilm carrier in wastewater treatment need various processing methods. The researchers also presented models and suggestions such as taxes, penalties, and public education for the control of CBs littering. Despite the innovative methods applied for the CBs recycling in previous studies, CBs have not received much attention in terms of pollutant control and environmental issues in recycling processes.
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Affiliation(s)
- Javad Torkashvand
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, IR, Iran
- Student Research Committee, Faculty of public health Branch, Iran University of medical sciences, Tehran, Iran
| | - Mahdi Farzadkia
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran.
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, IR, Iran.
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