1
|
Guo JF, Ping ZL, Liu N, Zhang X, Lv JL, Yao YY, Hu JJ, Wang WJ, Li JX. Performance on adsorption of toluene by ionic liquid-modified AC in high-humidity exhaust gas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:35553-35566. [PMID: 38733444 DOI: 10.1007/s11356-024-33578-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024]
Abstract
Volatile organic compounds (VOCs) frequently pose a threat to the biosphere, impacting ecosystems, flora, fauna, and the surrounding environment. Industrial emissions of VOCs often include the presence of water vapor, which, in turn, diminishes the adsorption capacity and efficacy of adsorbents. This occurs due to the competitive adsorption of water vapor, which competes with target pollutants for adsorption sites on the adsorbent material. In this study, hydrophobic activated carbons (BMIMPF6-AC (L), BMIMPF6-AC (g), and BMIMPF6-AC-H) were successfully prepared using 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) to adsorb toluene under humidity environment. The adsorption performance and mechanism of the resulting ionic liquid-modified activated carbon for toluene in a high-humidity environment were evaluated to explore the potential application of ionic liquids as hydrophobic modifiers. The results indicated that BMIMPF6-AC-H exhibited superior hydrophobicity. The toluene adsorption capacity of BMIMPF6-AC-H was 1.53 times higher than that of original activated carbon, while the adsorption capacity for water vapor was only 37.30% of it at 27 °C and 77% RH. The Y-N model well-fitted the dynamic adsorption experiments. To elucidate the microscopic mechanism of hydrophobic modification, the Independent Gradient Model (IGM) method was employed to characterize the intermolecular interactions between BMIMPF6 and toluene. Overall, this study introduces a new modifier for hydrophobic modification of activated carbon, which could enhance the efficiency of activated carbon in treating industrial VOCs.
Collapse
Affiliation(s)
- Ji-Feng Guo
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education, Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources, School of Water and Environment, Chang'an University, Xi'an, 710054, People's Republic of China
| | - Zhao-Li Ping
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education, Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources, School of Water and Environment, Chang'an University, Xi'an, 710054, People's Republic of China
| | - Nan Liu
- Key Laboratory of Pollution Treatment and Resource, China National Light Industry; Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Xin Zhang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education, Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources, School of Water and Environment, Chang'an University, Xi'an, 710054, People's Republic of China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 200120, People's Republic of China
| | - Jia-Lin Lv
- Key Laboratory of Pollution Treatment and Resource, China National Light Industry; Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Yan-Yan Yao
- Key Laboratory of Pollution Treatment and Resource, China National Light Industry; Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, People's Republic of China
| | - Jia-Jun Hu
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Wen-Juan Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 200120, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Ji-Xiang Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 200120, People's Republic of China.
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
| |
Collapse
|
2
|
Du Z, Li H, Nie L, Yao Z, Zhang X, Liu Y, Chen S. High-solution emission characters and health risks of volatile organic compounds for sprayers in automobile repair industries. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:22679-22693. [PMID: 38411906 DOI: 10.1007/s11356-024-32478-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 02/10/2024] [Indexed: 02/28/2024]
Abstract
The increasing automobile repair industries (ARIs) with spray facilities have become an important volatile organic compound (VOC) pollution source in China. However, the VOC health risk assessment for long-term exposure in ARIs has not been well characterized. In this study, though sampled VOCs from 51 typical ARIs in Beijing, the relationship between emission patterns, average daily exposure concentrations (EC), and health risks was comprehensively analyzed with the health assessment method. Results showed that concentrations of 117 VOCs from the samples ranged from 68.53 to 19863.32 μg·m-3, while the ARI operator's daily VOC inhalation EC was 11.24-1460.70 μg·m-3. The organic VOC (OVOC) concentration accounted for 73.16 ~ 94.52% in the solvent-based paint workshops, while aromatics were the main VOC component in water-based paint spraying (WPS) workshops, accounting for 70.08%, respectively. And the method of inhalation exposure health risk assessment was firstly used to evaluate carcinogenicity and non-carcinogenicity risk for sprayers in ARIs. The cumulative lifetime carcinogenic risk (LCR) for 24 sampled VOCs were within acceptable ranges, while the mean hazard index (HI) for 1 year with 44 sampled VOCs was over 1. Among them, ethyl alcohol had a high carcinogenic risk in both mixed water-based paint (MP) and solvent-based paint workshops. The mean HI associated with aromatics were 2.88E - 3 and 4.30E - 3 for 1 h in MP and WPS workshops. O-ethyl toluene and acetone are VOC components that need to be paid attention to in future paint raw materials and spraying operations. Our study will provide the important references for the standard of VOC occupational exposure health limits in ARIs.
Collapse
Affiliation(s)
- Zhanxia Du
- College of Environmental Science and Engineering, Key Laboratory of Beijing On Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, People's Republic of China
- Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Pollution Control and Application, National Urban Environmental Pollution Control Engineering Research Center, Beijing, 100037, People's Republic of China
| | - Hanbing Li
- College of Environmental Science and Engineering, Key Laboratory of Beijing On Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Lei Nie
- Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Pollution Control and Application, National Urban Environmental Pollution Control Engineering Research Center, Beijing, 100037, People's Republic of China
| | - Zhen Yao
- Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Pollution Control and Application, National Urban Environmental Pollution Control Engineering Research Center, Beijing, 100037, People's Republic of China
| | - Xinmin Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Yuting Liu
- College of Environmental Science and Engineering, Key Laboratory of Beijing On Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Sha Chen
- College of Environmental Science and Engineering, Key Laboratory of Beijing On Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, People's Republic of China.
| |
Collapse
|
3
|
Wang N, Zhao Y, Wu X, Li D, Ma R, Chen Z, Wu Z. Synthesis of Cu Nanoparticles Incorporated Mesoporous C/SiO 2 for Efficient Tetracycline Degradation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2478. [PMID: 37686986 PMCID: PMC10489891 DOI: 10.3390/nano13172478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/23/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023]
Abstract
In this study, a Cu NPs-incorporated carbon-containing mesoporous SiO2 (Cu/C-SiO2) was successfully synthesized through a grinding-assisted self-infiltration method followed by an in situ reduction process. The obtained Cu/C-SiO2 was then employed as a Fenton-like catalyst to remove tetracycline (TC) from aqueous solutions. TEM, EDS, XRD, N2 adsorption-desorption, FTIR, and XPS methods were used to characterize the crystal structure, morphology, porosity, chemical composition, and surface chemical properties of the catalyst. The effects of initial TC concentration, catalyst dosage, H2O2 dosage, solution pH, HA addition, and water media on the TC degradation over Cu/C-SiO2 were investigated. Scavenging and electrochemical experiments were then carried out to analyze the TC degradation mechanism. The results show that the Cu/C-SiO2 can remove 99.9% of the concentrated TC solution (C0 = 500 mg·L-1), and it can be used in a wide pH range (R.E. = 94-99%, pH = 3.0-11.0). Moreover, hydroxyl radicals (•OH) were detected to be the dominant reactive species in this catalytic system. This study provides a simple and promising method for the synthesis of heteroatom-containing mesoporous catalysts for the decomposition of antibiotics in wastewater.
Collapse
Affiliation(s)
- Ning Wang
- Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
- School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yuanyuan Zhao
- Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
- School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xuelian Wu
- Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
- School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Dapeng Li
- Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Ruguang Ma
- Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zhigang Chen
- Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
- Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zhengying Wu
- Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
- Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| |
Collapse
|
4
|
Wang H, Hao R, Xie X, Li G, Wang X, Wu W, Zhao H, Zhang Z, Fang L, Hao Z. Emission characteristics, risk assessment and scale effective control of VOCs from automobile repair industry in Beijing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 860:160115. [PMID: 36368399 DOI: 10.1016/j.scitotenv.2022.160115] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/03/2022] [Accepted: 11/06/2022] [Indexed: 06/16/2023]
Abstract
Automobile repair is regarded as a typical domestic source of VOCs in China characterized by numerous sites, wide dispersion and intermittent VOCs emissions. It is of great importance to study and control VOCs from such activities. In this research, emission characteristics, risk assessment and scale effective control of VOCs from automobile repair in Beijing were studied. Results showed that coating spraying and baking were the main processes of VOCs and the major species determined were mostly oxygen-containing VOCs and aromatic hydrocarbons in the case of solvent-based coating usage. Meanwhile, alkanes were determined and accounted for 40 % of total VOCs emissions during the water-based coating spraying and baking. Generally, the total determined VOCs during the automobile repair processes were 1.06-1.27 mg/m3 and 2.93-53.46 mg/m3 for the usage of water-based and solvent-based paint, respectively. Health risk assessments indicated that the residents in the region about 30 m high within a radius of 20 m around the automobile repair plants might suffer from both serious non-carcinogenic and carcinogenic risk threats in the case of solvent-based coating usage in that the values of total hazard index (HI) represented by dichloropropane and acrolein were higher than 1 and the value of lifetime cancer risk (LCR) represented by dichloroethane was higher than 10-5. Besides, those in the region about 30 m high and within a wider radius of 340 m might suffer from carcinogenic risk threat with a certain probability (LCR > 10-6) no matter either solvent-based or water-based coatings were used. As for the scale control of VOCs from automobile repair, independent adsorption by activated carbon combined with mobile regeneration by catalytic combustion was also proposed as an efficient way.
Collapse
Affiliation(s)
- Hailin Wang
- Beijing Key Laboratory for Urban Atmospheric VOCs Pollution Control and Technology Application, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China
| | - Run Hao
- Beijing Key Laboratory for Urban Atmospheric VOCs Pollution Control and Technology Application, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China
| | - Xiaoqi Xie
- Shunyi District Bureau of Ecology and Environment, Beijing 101300, China
| | - Guoao Li
- Beijing Key Laboratory for Urban Atmospheric VOCs Pollution Control and Technology Application, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China
| | - Xinxin Wang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Wenqing Wu
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Huan Zhao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Zhongshen Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Li Fang
- Beijing Key Laboratory for Urban Atmospheric VOCs Pollution Control and Technology Application, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China.
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China.
| |
Collapse
|
5
|
Wang H, Sun S, Nie L, Zhang Z, Li W, Hao Z. A review of whole-process control of industrial volatile organic compounds in China. J Environ Sci (China) 2023; 123:127-139. [PMID: 36521978 DOI: 10.1016/j.jes.2022.02.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 06/17/2023]
Abstract
Volatile organic compounds (VOCs) play an important role in the formation of ground-level ozone and secondary organic aerosol (SOA), and they have been key issues in current air pollution prevention and control in China. Considerable attention has been paid to industrial activities due to their large and relatively complex VOCs emissions. The present research aims to provide a comprehensive review on whole-process control of industrial VOCs, which mainly includes source reduction, collection enhancement and end-pipe treatments. Lower VOCs materials including water-borne ones are the keys to source substitution in industries related to coating and solvent usage, leak detection and repair (LDAR) should be regarded as an efficient means of source reduction in refining, petrochemical and other chemical industries. Several types of VOCs collection methods such as gas-collecting hoods, airtight partitions and others are discussed, and airtight collection at negative pressure yields the best collection efficiency. Current end-pipe treatments like UV oxidation, low-temperature plasma, activated carbon adsorption, combustion, biodegradation, and adsorption-combustion are discussed in detail. Finally, several recommendations are made for future advanced treatment and policy development in industrial VOCs emission control.
Collapse
Affiliation(s)
- Hailin Wang
- Beijing Key Laboratory for Urban Atmospheric VOCs Pollution Control and Technology Application, Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China
| | - Shumei Sun
- College of Resources Environment and Tourism, Capital Normal University, Beijing 100048, China
| | - Lei Nie
- Beijing Key Laboratory for Urban Atmospheric VOCs Pollution Control and Technology Application, Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China
| | - Zhongshen Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Wenpeng Li
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China.
| |
Collapse
|
6
|
Water decontamination using CaCO3 nanostructure and its nanocomposites: current advances. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04431-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
7
|
Li X, Shi J. Simultaneous adsorption of tetracycline, ammonium and phosphate from wastewater by iron and nitrogen modified biochar: Kinetics, isotherm, thermodynamic and mechanism. CHEMOSPHERE 2022; 293:133574. [PMID: 35016962 DOI: 10.1016/j.chemosphere.2022.133574] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 12/28/2021] [Accepted: 01/06/2022] [Indexed: 05/27/2023]
Abstract
The simultaneous removal of various pollutants in wastewater is increasingly deserved attention. In this study, an efficient adsorbent Fe/N@BC was synthesized by Fe-N co-modification. The adsorbability of Fe/N@BC was evaluated using a mixture with tetracycline (TC), NH4+-N and PO43-P. In comparison to BC, N@BC and Fe@BC, Fe/N@BC exhibited an excellent performance for simultaneously absorbing TC, NH4+-N and PO43-P. The pseudo-first-order was used to describe the adsorption process of NH4+-N and PO43-P, while the pseudo-second-order could be well fitted to TC adsorption data. The adsorption isotherms of TC, NH4+-N and PO43-P were more in line with Sips model (Adj.R2 > 0.97). The maximum adsorption capacities of Fe/N@BC towards TC, NH4+-N and PO43-P were 238.94, 111.87 and 165.02 mg g-1, respectively, which were 1.31-1.91 times than that of BC, N@BC and Fe@BC. The simultaneous adsorption mechanism mainly involved pore filling, electrostatic interaction, ion exchange, surface complexation, surface precipitation, H bond and π-π interaction. Furthermore, after six cycles, the removal efficiencies of TC, NH4+-N and PO43-P were 75.3, 66.1 and 64.5% by Fe/N@BC, highlighting its promising potential to adsorb multi-pollutants from aqueous solution.
Collapse
Affiliation(s)
- Xiumin Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055, Shaanxi, Xi'an, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, China
| | - Jingxin Shi
- State Engineering Research Center of Water Resources, Harbin Institute of Technology, Harbin, 150090, China; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| |
Collapse
|