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Liu H, Nie W, Tian Q, Bao Q, Niu W, Li R, Zhang X, Akanyange SN. Experimental and simulation studies on the improvement of coal dust pollution by an aqueous solution of sodium α-alkenylsulfonate and amino acid-based surfactants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 351:124041. [PMID: 38685552 DOI: 10.1016/j.envpol.2024.124041] [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: 02/20/2024] [Revised: 04/15/2024] [Accepted: 04/22/2024] [Indexed: 05/02/2024]
Abstract
The use of surfactants is crucial for the prevention and control of coal dust pollution in coal mining operation areas, yet there still exist many challenges in the control of coal dust pollution. In this paper, the green biomass-based amino acid surfactant sodium myristoyl glutamate (SMG) and the anionic surfactant sodium α-alkenyl sulfonate (AOS) were selected to investigate the improvement of coal dust wettability by single and binary solutions from the macroscopic and microscopic perspectives. Molecular simulations were used to reveal the microscopic mechanism of the wettability of coal dust by the different solutions. Experimental measurements showed that the contact angle of the AOS + SMG aqueous solution was as low as 13.8° on a coal surface. Coating the coal dust with the AOS + SMG solution reduced the surface tension by 12.02% compared to coating the coal with a single component solution. Additionally, the use of the binary AOS + SMG solution increased the hydrophilic group content in the coating by 11.77% compared to a single component solution, and the linkage between hydrophilic groups was enhanced, which pulls the water molecules to wet the coal dust. These research results should provide a new way to promote more environmentally friendly coal dust pollution control technology.
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Affiliation(s)
- Huajun Liu
- College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China
| | - Wen Nie
- State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China
| | - Qifan Tian
- State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China.
| | - Qiu Bao
- State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China
| | - Wenjin Niu
- State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China
| | - Ruoxi Li
- State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China
| | - Xiaohan Zhang
- State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China
| | - Stephen Nyabire Akanyange
- State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong Province, China
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Wang S, Zheng Y, Jiang B, Yu CF, Zhang Y, Tao W, Ji B. Effect of Sophorolipid Adsorption on the Coal Microstructure: Experimental and Wettability Mathematical Model Discussion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14173-14188. [PMID: 37734066 DOI: 10.1021/acs.langmuir.3c02308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Green biosurfactants are emerging as a promising area of research. However, there is a limited focus on the adsorption and wetting characteristics of biosurfactants on coal dust. This study explores the effects of sophorolipid (SL) biosurfactants on the microstructure and wettability of different coalification degree coal. The microstructure parameters of SL adsorbed on coal dust were measured using a surface tensiometer, contact angle analyzer, and particle size analyzer. The results indicate that SL has the lowest critical surface tension, leading to a 9.25° decrease in the contact angle for low-rank bituminous coal (YZ-LRBC). Furthermore, SL significantly altered the particle size distribution of lignite (NM-LC) and YZ-LRBC. The pore size structure of SL-infiltrated coal dust was quantified using a specific surface area analyzer, revealing a decrease in the specific surface area and an increase in the average pore size. The infrared analysis demonstrated that SL permeation significantly increased the percentage of hydrophilic functional groups (hydroxyl structures) while reducing the hydrophobic functional groups (aliphatic hydrocarbon and aromatic structure). Based on the measured microstructure parameters, a regression equation for contact angle was established: [contact angle (°)] = 73.800 - 0.860 × [D10 (nm)] + 4.280 × [specific surface area (m2/g)]. Notably, the characteristic particle size D10 had a significant negative effect on the contact angle, while the specific surface area had a significant positive effect. These findings provide a theoretical foundation for the application of biosurfactants in water injection to reduce dust and improve the wetting efficiency.
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Affiliation(s)
- Shiju Wang
- Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Yuannan Zheng
- Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Bingyou Jiang
- Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Chang-Fei Yu
- Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Yi Zhang
- Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Wenhan Tao
- Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Ben Ji
- Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety, Ministry of Education, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
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Li M, Song X, Li G, Tang J, Li Z. Experimental Study on Dust Suppression Effect and Performance of New Nano-Composite Dust Suppressant. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19106288. [PMID: 35627825 PMCID: PMC9141402 DOI: 10.3390/ijerph19106288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/12/2022] [Accepted: 05/18/2022] [Indexed: 11/16/2022]
Abstract
In this paper, a nano-composite dust suppressant has been proposed to make up for the deficiency in wettability and moisturizing performance of a nanofluid dust suppressant. The nanometer material Al2O3, super absorbent polymer, carboxyl methyl starch sodium, and polyacrylamide were selected as effective components of it. The surface tension of the solution, evaporation resistance, and uniaxial compressive strength (UCS) were chosen as evaluation index to compare the suppression performance, these dust suppressants include the water, nanofluid dust suppressant and nano-composite dust suppressant, and the surface morphology of each tested material was observed by micro image analysis system. It was found that the surface tension and water loss rates of the nano-composite dust suppressants, respectively, decreased by 31.96% and 7.1%, and the maximum UCS increased by 31.82% compared with data of nanofluid dust suppressants. Since the nano-composite dust suppressant has good dispersion, permeability and bond performance, the suppressant film has fewer micro-cracks from the photos of microscopic image; it can improve the compactness and integrity of dust consolidation to prevent the evaporation of water and dust re-entrainment.
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Affiliation(s)
- Ming Li
- School of Resources and Safety Engineering, Central South University, Changsha 410083, China; (M.L.); (J.T.); (Z.L.)
| | - Xinzhu Song
- School of Resources and Safety Engineering, Central South University, Changsha 410083, China; (M.L.); (J.T.); (Z.L.)
- Correspondence: ; Tel.: +86-13762390780
| | - Gang Li
- Sinosteel Maanshan General Institute of Mining Research Co., Ltd., Maanshan 243000, China;
| | - Jiao Tang
- School of Resources and Safety Engineering, Central South University, Changsha 410083, China; (M.L.); (J.T.); (Z.L.)
| | - Zhi Li
- School of Resources and Safety Engineering, Central South University, Changsha 410083, China; (M.L.); (J.T.); (Z.L.)
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Galluzzi M, Marfori L, Asperti S, De Vita A, Giannangeli M, Caselli A, Milani P, Podestà A. Interaction of imidazolium-based ionic liquids with supported phospholipid bilayers as model biomembranes. Phys Chem Chem Phys 2022; 24:27328-27342. [DOI: 10.1039/d2cp02866b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The cytotoxicity of ionic liquids (ILs) is receiving increasing attention due to their potential biological and environmental impact. We have used atomic force microscopy to investigate the interaction of ILs with supported phospholipid bilayers, as models of biomembranes.
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Affiliation(s)
- Massimiliano Galluzzi
- Materials Interfaces Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
- C.I.Ma.I.Na and Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, via Celoria 16, 20133-Milano, Italy
| | - Lorenzo Marfori
- C.I.Ma.I.Na and Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, via Celoria 16, 20133-Milano, Italy
| | - Stefania Asperti
- C.I.Ma.I.Na and Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, via Celoria 16, 20133-Milano, Italy
| | - Alessandro De Vita
- C.I.Ma.I.Na and Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, via Celoria 16, 20133-Milano, Italy
| | - Matteo Giannangeli
- Dipartimento di Chimica and CNR-SCITEC, Università degli Studi di Milano, via Golgi 19, 20133-Milano, Italy
| | - Alessandro Caselli
- Dipartimento di Chimica and CNR-SCITEC, Università degli Studi di Milano, via Golgi 19, 20133-Milano, Italy
| | - Paolo Milani
- C.I.Ma.I.Na and Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, via Celoria 16, 20133-Milano, Italy
| | - Alessandro Podestà
- C.I.Ma.I.Na and Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, via Celoria 16, 20133-Milano, Italy
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