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Makoś-Chełstowska P, Słupek E, Gębicki J. Agri-food waste biosorbents for volatile organic compounds removal from air and industrial gases - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:173910. [PMID: 38880149 DOI: 10.1016/j.scitotenv.2024.173910] [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: 04/28/2024] [Revised: 06/06/2024] [Accepted: 06/08/2024] [Indexed: 06/18/2024]
Abstract
Approximately 1.3 billion metric tons of agricultural and food waste is produced annually, highlighting the need for appropriate processing and management strategies. This paper provides an exhaustive overview of the utilization of agri-food waste as a biosorbents for the elimination of volatile organic compounds (VOCs) from gaseous streams. The review paper underscores the critical role of waste management in the context of a circular economy, wherein waste is not viewed as a final product, but rather as a valuable resource for innovative processes. This perspective is consistent with the principles of resource efficiency and sustainability. Various types of waste have been described as effective biosorbents, and methods for biosorbents preparation have been discussed, including thermal treatment, surface activation, and doping with nitrogen, phosphorus, and sulfur atoms. This review further investigates the applications of these biosorbents in adsorbing VOCs from gaseous streams and elucidates the primary mechanisms governing the adsorption process. Additionally, this study sheds light on methods of biosorbents regeneration, which is a key aspect of practical applications. The paper concludes with a critical commentary and discussion of future perspectives in this field, emphasizing the need for more research and innovation in waste management to fully realize the potential of a circular economy. This review serves as a valuable resource for researchers and practitioners interested in the potential use of agri-food waste biosorbents for VOCs removal, marking a significant first step toward considering these aspects together.
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Affiliation(s)
- Patrycja Makoś-Chełstowska
- Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland.
| | - Edyta Słupek
- Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland
| | - Jacek Gębicki
- Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland
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2
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Liang L, Chen J, Xiao J, Qiu H. Preparation of GO/COFs composites by interlayer-confined strategy for the adsorption of nitro aromatic pollutants. J Chromatogr A 2024; 1730:465066. [PMID: 38897110 DOI: 10.1016/j.chroma.2024.465066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 06/06/2024] [Accepted: 06/08/2024] [Indexed: 06/21/2024]
Abstract
With the continuous development of industrialization, the excessive emission of nitro aromatic with strong toxicity, high carcinogenicity and non-degradability has attracted great attention. How to efficiently remove nitro aromatic pollutants is an important research topic. In this work, graphene oxide/covalent organic frameworks (GO/COFs) composites were successfully synthesized via interlayer confinement strategy selecting GO, 2,5-dimethoxybenzene-1,4-dicarboxaldehyde (DMTP) and 1,3,5-tri(4-aminophenyl)benzene (TPB) as raw materials. Due to high specific surface area, hierarchical porous structure and good thermal stability, GO/COFs were utilized to adsorb and remove nitro aromatic hydrocarbons in the water environment. The adsorption behavior of GO/COFs for o-nitrophenol, 1,3-dinitrobenzene and 2,4,6-trinitrophenol were further investigated. The GO/COFs composites showed the strongest adsorption capacity for 2,4,6-trinitrophenol, and the maximum adsorption capacity for 2,4,6-trinitrophenol, o-nitrophenol, and 1,3-dinitrobenzene were 438, 317, and 173 mg g-1, respectively. The experimental results indicated that the GO/COFs composites provided great adsorption capability for nitro aromatic pollutants and can be reused, rendering it an extremely potential adsorbent for organic pollutants.
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Affiliation(s)
- Li Liang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Jing Xiao
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Key Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China.
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3
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Xiao H, Zhang J, Hou Y, Wang Y, Qiu Y, Chen P, Ye D. Process-specified emission factors and characteristics of VOCs from the auto-repair painting industry. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133666. [PMID: 38350315 DOI: 10.1016/j.jhazmat.2024.133666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/10/2024] [Accepted: 01/28/2024] [Indexed: 02/15/2024]
Abstract
Daily use of passenger vehicles leads to considerable emission of volatile organic compounds (VOCs), which are key precursors to the ground-level ozone pollution. While evaporative and tailpipe emission of VOCs from the passenger vehicles can be eliminated largely, or even completely, by electrification, VOCs emission from the use of coatings in auto-repair is unavoidable and has long been ignored. Here, we present for the first time, to the best of our knowledge, a comprehensive investigation on the emission factors and process-specified characteristics of VOCs from auto-repair painting, based on field measurements over 15 representative auto-repair workshops in the Pearl-River-Delta area, China. Replacement of solvent-borne coatings with water-borne counterparts, which was only achieved partially in the Basecoat step but not in the Putty, Primer and Clearcoat steps, could reduce the per automobile VOCs emission from 756.5 to 489.6 g and the per automobile ozone formation potential (OFP) from 2776.5 to 1666.4 g. Implementation of exhaust after-treatment led to a further reduction of the per automobile VOCs emission to 340.9 g, which is still ca. 42% higher than that from the state-of-art painting processes for the manufacture of passenger vehicles. According to the analysis of VOCs compositions, the Putty process was dominated by the emission of styrene, while Primer, Basecoat (solvent-borne) and Clearcoat steps were all characterized by the emission of n-butyl acetate and xylenes. By contrast, water-borne Basecoat step showed a prominent emission of n-amyl alcohol. Notably, for the full painting process to repair an automobile, n-butyl acetate emerged as the most abundant species in the VOCs emission, whereas xylenes contributed most significantly to the OFP. Scenario analysis suggested that reducing VOCs contents in the coatings, as well as improving the after-treatment efficiency, were highly potential solutions for effective reduction of VOCs emission from auto-repair. Our study contributes to an update of industrial inventories of VOCs emission, and may provide valuable insights for reducing VOCs emission and OFPs from the auto-repair industry.
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Affiliation(s)
- Hailin Xiao
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Jiani Zhang
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Yuxin Hou
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Yifei Wang
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Yongcai Qiu
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Peirong Chen
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China.
| | - Daiqi Ye
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China.
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4
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Zheng G, Wei K, Kang X, Fan W, Ma NL, Verma M, Ng HS, Ge S. A new attempt to control volatile organic compounds (VOCs) pollution - Modification technology of biomass for adsorption of VOCs gas. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122451. [PMID: 37648056 DOI: 10.1016/j.envpol.2023.122451] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/15/2023] [Accepted: 08/23/2023] [Indexed: 09/01/2023]
Abstract
The detrimental impact of volatile organic compounds on the surroundings is widely acknowledged, and effective solutions must be sought to mitigate their pollution. Adsorption treatment is a cost-effective, energy-saving, and flexible solution that has gained popularity. Biomass is an inexpensive, naturally porous material with exceptional adsorbent properties. This article examines current research on volatile organic compounds adsorption using biomass, including the composition of these compounds and the physical (van der Waals) and chemical mechanisms (Chemical bonding) by which porous materials adsorb them. Specifically, the strategic modification of the surface chemical functional groups and pore structure is explored to facilitate optimal adsorption, including pyrolysis, activation, heteroatom doping and other methods. It is worth noting that biomass adsorbents are emerging as a highly promising strategy for green treatment of volatile organic compounds pollution in the future. Overall, the findings signify that biomass modification represents a viable and competent approach for eliminating volatile organic compounds from the environment.
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Affiliation(s)
- Guiyang Zheng
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Kexin Wei
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xuelian Kang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Wei Fan
- School of Textile Science and Engineering & Key Laboratory of Functional Textile Material and Product of Ministry of Education, Xi'an Polytechnic University, Xi'an, Shanxi 710048, China
| | - Nyuk Ling Ma
- BIOSES Research Interest Group, Faculty of Science & Marine Environment, 21030 Universiti Malaysia Terengganu, Malaysia; Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 602105, India
| | - Meenakshi Verma
- University Centre for Research and Development, Department of Chemistry, Chandigarh University, Gharuan, Mohali, Punjab, India
| | - Hui Suan Ng
- Centre for Research and Graduate Studies, University of Cyberjaya, Persiaran Bestari, 63000 Cyberjaya, Selangor, Malaysia
| | - Shengbo Ge
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
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5
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Pan C, Wang W, Fu C, Chol Nam J, Wu F, You Z, Xu J, Li J. Promoted wet peroxide oxidation of chlorinated volatile organic compounds catalyzed by FeOCl supported on macro-microporous biomass-derived activated carbon. J Colloid Interface Sci 2023; 646:320-330. [PMID: 37201460 DOI: 10.1016/j.jcis.2023.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 04/23/2023] [Accepted: 05/03/2023] [Indexed: 05/20/2023]
Abstract
Chlorinated volatile organic compounds (CVOCs) are a recalcitrant class of air pollutants, and the strongly oxidizing reactive oxygen species (ROS) generated in advanced oxidation processes (AOPs) are promising to degrade them. In this study, a FeOCl-loaded biomass-derived activated carbon (BAC) has been used as an adsorbent for accumulating CVOCs and catalyst for activating H2O2 to construct a wet scrubber for the removal of airborne CVOCs. In addition to well-developed micropores, the BAC has macropores mimicking those of biostructures, which allows CVOCs to diffuse easily to its adsorption sites and catalytic sites. Probe experiments have revealed HO• to be the dominant ROS in the FeOCl/BAC + H2O2 system. The wet scrubber performs well at pH 3 and H2O2 concentrations as low as a few mM. It is capable of removing over 90% of dichloroethane, trichloroethylene, dichloromethane and chlorobenzene from air. By applying pulsed dosing or continuous dosing to replenish H2O2 to maintain its appropriate concentration, the system achieves good long-term efficiency. A dichloroethane degradation pathway is proposed based on the analysis of intermediates. This work may provide inspiration for the design of catalyst exploiting the inherent structure of biomass for catalytic wet oxidation of CVOCs or other contaminants.
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Affiliation(s)
- Cong Pan
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Wenyu Wang
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Chenchong Fu
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Jong Chol Nam
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Feng Wu
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Zhixiong You
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Jing Xu
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, P.R. China.
| | - Jinjun Li
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China.
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Gong P, He F, Xie J, Fang D. Catalytic removal of toluene using MnO 2-based catalysts: A review. CHEMOSPHERE 2023; 318:137938. [PMID: 36702414 DOI: 10.1016/j.chemosphere.2023.137938] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 06/18/2023]
Abstract
Volatile organic compounds (VOCs) have serious hazard to human health and ecological environment. Due to its low cost and high activity, the catalytic oxidation technology considered to be the most effective method to remove VOCs. Toluene is one of the typical VOCs, hence its catalytic elimination is crucial for the regulation of VOCs. Manganese dioxide (MnO2) has been extensively studied for its excellent redox performance and low-temperature operation conditions. In this review, we summarize the research progresses in the toluene catalytic oxidation of MnO2-based catalysts, which contain single MnO2, metal-doped MnO2 and supported MnO2 catalyst. In particular, we pay much attention on the relationship between the chemical properties and toluene oxidation performance over MnO2 catalyst, as well as the catalytic reaction mechanisms. Moreover, the effects of different crystal forms and morphologies on the catalytic toluene reaction were discussed. And the perspective on MnO2 catalysts for the catalytic oxidation of toluene has been proposed. We expect that the summary of these important findings can serve as an important reference for the catalytic treatment of VOCs.
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Affiliation(s)
- Pijun Gong
- School of Environment and Materials Engineering, Yantai University, Yantai 264005, PR China.
| | - Feng He
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China
| | - Junlin Xie
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China
| | - De Fang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China
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7
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Gao W, Tang X, Yi H, Jiang S, Yu Q, Xie X, Zhuang R. Mesoporous molecular sieve-based materials for catalytic oxidation of VOC: A review. J Environ Sci (China) 2023; 125:112-134. [PMID: 36375898 DOI: 10.1016/j.jes.2021.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 10/15/2021] [Accepted: 11/11/2021] [Indexed: 06/16/2023]
Abstract
As the main contributor of the formation of particulate matter as well as ozone, volatile organic compounds (VOCs) greatly affect human health and the environmental quality. Catalytic combustion/oxidation has been viewed as an efficient, economically feasible and environmentally friendly way for the elimination of VOCs. Supported metal catalyst is the preferred type of catalysts applied for VOCs catalytic combustion because of the synergy between active components and support as well as its flexibility in the composition. The presence of support not only plays the role of keeping the catalyst with good stability and mechanical strength, but also provides a large specific surface for the good dispersion of active components, which could effectively improve the performance of catalyst as well as decrease the usage of active components, especially the noble metal amount. Mesoporous molecular sieves, owing to their large surface area, unique porous structures, large pore size as well as uniform pore-size distribution, were viewed as superior support for dispersing active components. This review focuses on the recent development of mesoporous molecular sieve supported metal catalysts and their application in catalytic oxidation of VOCs. The effect of active component types, support structure, preparation method, precursors, etc. on the valence state, dispersion as well as the loading of active species were also discussed and summarized. Moreover, the corresponding conversion route of VOCs was also addressed. This review aims to provide some enlightment for designing the supported metal catalysts with superior activity and stability for VOCs removal.
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Affiliation(s)
- Wei Gao
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiaolong Tang
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
| | - Honghong Yi
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
| | - Shanxue Jiang
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China
| | - Qingjun Yu
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China.
| | - Xizhou Xie
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ruijie Zhuang
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
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8
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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: 0] [Impact Index Per Article: 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.
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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.
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9
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Gan G, Fan S, Li X, Zhang Z, Hao Z. Adsorption and membrane separation for removal and recovery of volatile organic compounds. J Environ Sci (China) 2023; 123:96-115. [PMID: 36522017 DOI: 10.1016/j.jes.2022.02.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 02/02/2022] [Accepted: 02/06/2022] [Indexed: 06/17/2023]
Abstract
Volatile organic compounds (VOCs) are a crucial kind of pollutants in the environment due to their obvious features of severe toxicity, high volatility, and poor degradability. It is particularly urgent to control the emission of VOCs due to the persistent increase of concentration and the stringent regulations. In China, clear directions and requirements for reduction of VOCs have been given in the "national plan on environmental improvement for the 13th Five-Year Plan period". Therefore, the development of efficient technologies for removal and recovery of VOCs is of great significance. Recovery technologies are favored by researchers due to their advantages in both recycling VOCs and reducing carbon emissions. Among them, adsorption and membrane separation processes have been extensively studied due to their remarkable industrial prospects. This overview was to provide an up-to-date progress of adsorption and membrane separation for removal and recovery of VOCs. Firstly, adsorption and membrane separation were found to be the research hotspots through bibliometric analysis. Then, a comprehensive understanding of their mechanisms, factors, and current application statuses was discussed. Finally, the challenges and perspectives in this emerging field were briefly highlighted.
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Affiliation(s)
- Guoqiang Gan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Shiying Fan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| | - Xinyong Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhongshen Zhang
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing 101408, China
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10
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Samaddar P, Hu J, Barua N, Wang Y, Lee TA, Prodanović M, Heidari Z, Hutter T. Sorption Kinetics and Sequential Adsorption Analysis of Volatile Organic Compounds on Mesoporous Silica. ACS OMEGA 2022; 7:43130-43138. [PMID: 36467938 PMCID: PMC9713782 DOI: 10.1021/acsomega.2c05608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
Adsorption-desorption behaviors of polar and nonpolar volatile organic compounds (VOCs), namely, isopropanol and nonane, on mesoporous silica were studied using optical reflectance spectroscopy. Mesoporous silica was fabricated via electrochemical etching of silicon and subsequent thermal oxidation, resulting in an average pore diameter of 11 nm and a surface area of approximately 493 m2/g. The optical thickness of the porous layer, which is proportional to the number of adsorbed molecules, was measured using visible light reflectance interferometry. In situ adsorption and desorption kinetics were obtained for various mesoporous silica temperatures ranging from 10 to 70 °C. Sorption as a function of temperature was acquired for isopropanol and nonane. Sequential adsorption measurements of isopropanol and nonane were performed and showed that, when one VOC is introduced immediately following another, the second VOC displaces the first one regardless of the VOC's polarity and the strength of its interaction with the silica surface.
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Affiliation(s)
- Pallabi Samaddar
- Walker
Department of Mechanical Engineering, The
University of Texas at Austin, Austin, Texas78712, United States
| | - Jinchuang Hu
- Hildebrand
Department of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas78712, United States
| | - Nirmalay Barua
- Walker
Department of Mechanical Engineering, The
University of Texas at Austin, Austin, Texas78712, United States
| | - Yixian Wang
- Materials
Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas78712, United States
| | - Tse-Ang Lee
- Walker
Department of Mechanical Engineering, The
University of Texas at Austin, Austin, Texas78712, United States
| | - Maša Prodanović
- Hildebrand
Department of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas78712, United States
- Center
for Subsurface Energy and the Environment, The University of Texas at Austin, Austin, Texas78712, United States
| | - Zoya Heidari
- Hildebrand
Department of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas78712, United States
- Center
for Subsurface Energy and the Environment, The University of Texas at Austin, Austin, Texas78712, United States
| | - Tanya Hutter
- Walker
Department of Mechanical Engineering, The
University of Texas at Austin, Austin, Texas78712, United States
- Materials
Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas78712, United States
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11
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Yang X, Liu M, Tian Z, Chen J, Zhang Q, Ning P. Tuning Hydrophobicity of HY Zeolite by Suppressing Dealumination Process for Toluene Adsorption in Humid Conditions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Xiao S, Shoaib A, Xu J, Lin D. Mesoporous silica size, charge, and hydrophobicity affect the loading and releasing performance of lambda-cyhalothrin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 831:154914. [PMID: 35364147 DOI: 10.1016/j.scitotenv.2022.154914] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/11/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Nanopesticides are attracting increasing attention as a promising technology in agriculture to improve insecticidal efficacy, decrease pesticides uses, and reduce potential environmental impacts. We synthesized mesoporous silica nanoparticles, i.e., Mobil Composition of Matter No.48 (MCM-48), with different sizes (63-130 nm), charges (-22 to 12 mV), and hydrophobicity (water contact angle 29-103°) to assess their loading amount and release of a typical poorly soluble halogenated pyrethroid (i.e., lambda-cyhalothrin particles, LCNS). The smallest MCM-48 displayed relatively higher loading amount of LCNS (~16%) compared to the larger MCM-48 nanoparticles, likely because of its higher pore volume (1.46 cm3 g-1) and pore size (3.56 nm). LCNS loading amount was further improved to ~26% and ~36% after -NH2 (positively charged) and -CH3 (hydrophobic) functionalization, respectively, probably due to hydrogen bonding, electrostatic, and hydrophobic interactions with LCNS. Loading LCNS in MCM-48 nanoparticles also significantly improved its dispersion in water and ultraviolet (UV) light stability, with a 3-7 times longer half-life than that of free LCNS. Although the -NH2 and -CH3 modifications of MCM-48 slightly decreased the UV stability of LCNS, they significantly decreased the release efficiency of LCNS, possibly because of their stronger interactions with LCNS. In addition, the insecticidal effects of LCNS-loaded MCM-48 were more efficient and longer than those of free LCNS. The findings clarify the relationships between physicochemical properties and performance of mesoporous silica nanoparticles, and will inform the rational design of materials for controlled release of pesticides and sustainable control of pests.
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Affiliation(s)
- Shuting Xiao
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Ali Shoaib
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Jiang Xu
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China.
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China
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13
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Peyravi A, Ahmadijokani F, Arjmand M, Hashisho Z. Graphene oxide enhances thermal stability and microwave absorption/regeneration of a porous polymer. JOURNAL OF HAZARDOUS MATERIALS 2022; 433:128792. [PMID: 35364540 DOI: 10.1016/j.jhazmat.2022.128792] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Microwave regeneration of adsorbents offers several advantages over conventional regeneration methods; however, its application for microwave transparent adsorbents such as polymers is challenging. In this study, hypercrosslinked polymer/graphene oxide (GO) nanocomposites with large surface area and enhanced microwave absorption ability were synthesized. Polymers of 4, 4´-bis ((chloromethyl)-1, 1´-biphenyl- benzyl chloride) were hypercrosslinked through the Friedel-Crafts reactions. GO sheets were synthesized through the Hummer's method. Nanocomposites with different GO contents (1-8 wt%) were synthesized by solution mixing method. Thermogravimetry analysis revealed a large enhancement in the thermal stability of GO-filled nanocomposites compared to pristine polymer. N2 adsorption isotherm analysis showed 7% and 10% reduction in BET surface area and total pore volume of the nanocomposite with 8 wt% GO. Compared to the pristine polymer, the dielectric constant and dielectric loss factor increased from 5 to 17 and 0.05-1.6, respectively, for the nanocomposites with 8 wt% GO. Microwave-assisted desorption of toluene from samples revealed more than 160 ºC and 4 times improvement in the desorption temperature and desorption efficiency, respectively, by addition of 4 wt% GO to the polymer. This study showed the important role of GO addition for efficient microwave-assisted regeneration of polymer adsorbents.
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Affiliation(s)
- Arman Peyravi
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Farhad Ahmadijokani
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada
| | - Mohammad Arjmand
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada
| | - Zaher Hashisho
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
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14
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Ahmadi Y, Kim KH. Recent Progress in the Development of Hyper-Cross-Linked Polymers for Adsorption of Gaseous Volatile Organic Compounds. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2082470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Younes Ahmadi
- Department of Analytical Chemistry, Kabul University, Kabul, Afghanistan
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, Korea
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15
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Magnetic mesoporous silica nanoparticles for drug delivery systems: Synthesis, characterization and application as norfloxacin carrier. J Pharm Sci 2022; 111:2879-2887. [PMID: 35667632 DOI: 10.1016/j.xphs.2022.05.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/30/2022] [Accepted: 05/30/2022] [Indexed: 11/24/2022]
Abstract
Mesoporous silica nanoparticles, with and without the inclusion of a magnetic core, were hydrothermally synthesized and employed as carrier of the antibiotic norfloxacin (NFX). The antibiotic-loaded materials were prepared by wet impregnation. Differences in drug content (and in further release profile) were directly related to changes in surface area, particle aggregation and hydrophobicity of the solids. The kinetics of NFX release has been studied in batch experiments. In all cases, more than 55% of the antibiotic was quickly desorbed during the first 5 minutes due to the localization of NFX on the external surface of the nanoparticles. The rest of the drug (situated inside the mesopores) was released through a diffusion-controlled transport and the rate was strongly dependent of the pH, reaching its minimum value at neutral pH. The calculated activation energy confirmed that the release was controlled by a diffusion process. Breaking of H-bonds and electrostatic and hydrophobic interactions appear to be responsible for NFX desorption from the solid surface. Such interactions increase, however, the thermal stability of the drug when the NFX and the carriers are combined. The antimicrobial activities of the drug loaded nanoparticles and the free antibiotic were compared and discussed.
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16
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Vo TTN, Lim ST, Kim JH, Shim GH, Kim KM, Kweon B, Kim M, Lee CY, Ahn HS. Nanostructured micro/mesoporous graphene: removal performance of volatile organic compounds. RSC Adv 2022; 12:14570-14577. [PMID: 35702224 PMCID: PMC9105649 DOI: 10.1039/d2ra01275h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/09/2022] [Indexed: 11/21/2022] Open
Abstract
In this study, we demonstrate an integrated synthesis strategy, which is conducted by the thermochemical process, consisting of pre- and post-activation by thermal treatment and KOH activation for the reduction of graphite oxide. A large number of interconnected pore networks with a micro/mesoporous range were constructed on a framework of graphene layers with a specific surface area of up to 1261 m2 g-1. This suggests a synergistic effect of thermally exfoliated graphene oxide (TEGO) on the removal efficiency of volatile organic compounds by generating pore texture with aromatic adsorbates such as benzene, toluene, and o-xylene (denoted as BTX) from an inert gaseous stream concentration of 100 ppm. As a proof of concept, TEGO, as well as pre- and post-activated TEGO, were used as adsorbents in a self-designed BTX gas adsorption apparatus, which exhibited a high removal efficiency of up to 98 ± 2%. The distinctive structure of TEGO has a significant effect on removal performance, which will greatly facilitate the strategy of efficient VOC removal configurations.
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Affiliation(s)
- Thi To Nguyen Vo
- Department of Mechanical Engineering, Incheon National University Incheon Republic of Korea
| | - Sun Taek Lim
- Department of Mechanical Engineering, Incheon National University Incheon Republic of Korea
- Nuclear Safety Research Institute, Incheon National University Incheon Republic of Korea
| | - Ji Hoon Kim
- Department of Mechanical Engineering, Incheon National University Incheon Republic of Korea
- Research Institute of Basic Sciences, Incheon National University Incheon Republic of Korea
| | - Gyu Hyeon Shim
- Department of Mechanical Engineering, Incheon National University Incheon Republic of Korea
- Nuclear Safety Research Institute, Incheon National University Incheon Republic of Korea
| | - Koung Moon Kim
- Department of Mechanical Engineering, Incheon National University Incheon Republic of Korea
- Nuclear Safety Research Institute, Incheon National University Incheon Republic of Korea
| | - Boyeon Kweon
- Department of Mechanical Engineering, Incheon National University Incheon Republic of Korea
| | - Miyeon Kim
- Department of Energy and Chemical Engineering, Incheon National University Incheon Republic of Korea
| | - Chang Yeon Lee
- Department of Energy and Chemical Engineering, Incheon National University Incheon Republic of Korea
| | - Ho Seon Ahn
- Department of Mechanical Engineering, Incheon National University Incheon Republic of Korea
- Nuclear Safety Research Institute, Incheon National University Incheon Republic of Korea
- AHN Materials INC Incheon Republic of Korea
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17
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Yu Q, Zhuang R, Yi H, Gao W, Zhang Y, Tang X. Application of MCM-48 with large specific surface area for VOCs elimination: synthesis and hydrophobic functionalization for highly efficient adsorption. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:33595-33608. [PMID: 35029827 DOI: 10.1007/s11356-021-17356-y] [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: 08/10/2021] [Accepted: 10/30/2021] [Indexed: 06/14/2023]
Abstract
MCM-48 molecular sieve with a large specific area (1470.87 m2/g) was hydrothermally synthesized for VOCs elimination by the adsorption method. The dynamic adsorption behaviors of toluene on this material were evaluated via breakthrough curves under both dry and wet conditions. A high toluene adsorption capacity of 171.13 mg/g was observed under dry conditions; however, in the presence of water vapor (20% RH), the adsorption capacity greatly decreased to 58.88 mg/g due to the competitive occupation of adsorption sites between water molecules and toluene molecules. To improve the affinity to toluene, functionalized MCM-48 materials were obtained by the co-condensation method and grafting method, respectively. It was found that co-M48(1:5)-100/48 sample by co-condensation method presents the highest dynamic adsorption capacity at both dry condition (194.62 mg/g) and 20% RH (122.42 mg/g), which has a significant advantage in the same type of adsorbent. This could be ascribed to the conjugated π-electrons effect between aromatic rings of phenyl groups uniformly distributed in MCM-48 skeleton and toluene molecules, which was qualitatively confirmed by FTIR. Moreover, cycle tests confirmed that this adsorbent possesses superior stability. The Yoon-Nelson model was successfully employed to describe the dynamic adsorption behavior of toluene over the organofunctionalized MCM-48 adsorbents, and the adsorption force of toluene was explained. Finally, a diagram describing the effect of different functionalization methods on the hydrophobicity and organophilicity of MCM-48 was given for a better understanding.
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Affiliation(s)
- Qingjun Yu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Recycling of Typical Industrial Pollutants, Beijing, 100083, China
| | - Ruijie Zhuang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Honghong Yi
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Recycling of Typical Industrial Pollutants, Beijing, 100083, China
| | - Wei Gao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yuanyuan Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xiaolong Tang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
- Beijing Key Laboratory of Recycling of Typical Industrial Pollutants, Beijing, 100083, China.
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Zhang J, Zuo J, Liu Y, Zhang J, Fu W, Zhang J, Miao S, Wei C. Universality of mesoporous coal gasification slag for reinforcement and deodorization in four common polymers. NANOTECHNOLOGY 2021; 33:095703. [PMID: 34808606 DOI: 10.1088/1361-6528/ac3bf0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
Mesoporous adsorbents and polymer deodorants are difficult to implement on a large scale because of their complicated preparation methods. Herein, a mesoporous adsorbent (CGSA) with a specific surface area of 564 m2g-1and a pore volume of 0.807 cm3g-1was prepared from solid waste coal gasification slag using a simple acid leaching process. The adsorption thermodynamics and adsorption kinetics results verified that the adsorption mechanism of propane on CGSA was mainly physisorption. Then the universality of CGSA in different polymers was investigated by introducing CGSA and its commercialized counterparts (CaCO3, and zeolite) into four common polymers. When the filler content was 30 wt%, the average reinforcement effect of CGSA on the tensile, flexural, and impact strengths of the four polymers was 46.68%, 83.62%, and 211.90% higher than that of CaCO3, respectively. Gas chromatography results also showed that CGSA significantly decreased total volatile organic compound emissions from the composites, and its optimal deodorization performance reached 69.58%, 81.33%, and 91.09% for different polymers, respectively, far exceeding that of zeolite. Therefore, this study showed that low-cost, high-performance, and multifunctional mesoporous polymer fillers with excellent universality can be manufactured from solid contaminants.
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Affiliation(s)
- Jiupeng Zhang
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Jing Zuo
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Yang Liu
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Junyu Zhang
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Wenjing Fu
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Jinyi Zhang
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Shiding Miao
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Cundi Wei
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
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19
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Wang J, Wang G, Zhang Z, Ouyang G, Hao Z. Effects of mesoporous silica particle size and pore structure on the performance of polymer-mesoporous silica mixed matrix membranes. RSC Adv 2021; 11:36577-36586. [PMID: 35494354 PMCID: PMC9043583 DOI: 10.1039/d1ra05125c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 10/31/2021] [Indexed: 11/21/2022] Open
Abstract
The fabrication of mixed matrix membranes (MMMs) has been regarded as an effective and economic approach to enhance the gas permeability and selectivity properties of conventional polymeric membranes for gas separation applications. However, the poor compatibility between polymeric matrix and inorganic filler in MMMs could lead to the generation of interfacial defects resulting in reduced gas selectivity. In this work, with the aim of studying the effect of particle size and pore structure of the filler on the performance of the resultant MMMs, nano/micro sized spherical mesoporous silicas with 2D/3D pore structure (MCM-41 and MCM-48) were synthesized and selected as fillers for the preparation of polydimethylsiloxane (PDMS)-based MMMs. The separation properties of the membranes prepared were characterized by permeability measurements for nitrogen and organic vapors (C3H6 and n-C4H10). Compared with microsized particles, nanosized fillers have better dispersion in the polymer matrix which could minimize the formation of non-selective microvoids around the particles, leading to higher vapor/N2 ideal selectivities of the MMMs, even at the high loading (15 wt%). Moreover, due to the conventional random packing orientation of the particles in the polymer, vapor permeation was severely hindered in the MMMs fabricated from mesoporous silica with 2D pore channels. The interface morphologies and gas diffusion paths in the MMMs have also been proposed. With an optimum loading of nanosized MCM-48 (3D pore structure), the vapor permeabilities and vapor/N2 ideal selectivities of the MMMs were shown to increase simultaneously, compared with the neat polymer membrane. The effects of filler particle size and pore structure on the gas separation performance of mixed matrix membranes were comprehensively investigated via elaborate synthesis of mesoporous silicas.![]()
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Affiliation(s)
- Junhui Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University No. 135, Xingang Xi Road Guangzhou Guangdong 510275 China
| | - Gang Wang
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology Beijing 100029 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
| | - Gangfeng Ouyang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University No. 135, Xingang Xi Road Guangzhou Guangdong 510275 China.,Chemistry College, Center of Advanced Analysis and Gene Sequencing, Zhengzhou University Kexue Avenue 100 Zhengzhou 450001 China.,Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Provincial Engineering Research Center for Ambient Mass Spectrometry, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center Guangzhou) 100 Xianlie Middle Road Guangzhou 510070 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
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20
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Adsorption behaviors of VOCs under coal-combustion flue gas environment using activated carbon injection coupled with bag filtering system. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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da Costa JS, Bertizzolo EG, Bianchini D, Fajardo AR. Adsorption of benzene and toluene from aqueous solution using a composite hydrogel of alginate-grafted with mesoporous silica. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126405. [PMID: 34351297 DOI: 10.1016/j.jhazmat.2021.126405] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 06/13/2023]
Abstract
Hydrogels are often claimed as optimal adsorbents for water treatment; however, their efficiency towards the removal of hydrophobic pollutants is still limited. As an alternative, hydrogels prepared from polymers functionalized with siliceous materials can overcome this issue. Here, a composite hydrogel (denoted as GEL-SBA15) was prepared using alginate grafted with mesoporous silica (SBA15) and poly(vinyl alcohol) for benzene and toluene adsorption from aqueous solutions. Adsorption studies demonstrated that a low dosage of GEL-SBA15 (10 mg) has a high adsorption capacity for benzene (1482.8 mg/g) and toluene (596.6 mg/g) under mild experimental conditions (pH 7.0, at 25 °C). Besides, the adsorption capacities of GEL-SBA15 for both pollutants were enhanced compared to the conventional hydrogel. Kinetic analysis showed that the adsorption of benzene and toluene follows a pseudo-second order model, while the experimental adsorption data were well-fitted by the Freundlich isotherm. According to this isotherm, the adsorption occurs via a collaborative process, and weak physical forces (π-π interactions, van der Waals and hydrophobic) are involved. Hence, the post-utilized GEL-SBA15 can be recycled and reused up to 6 times without losing adsorption performance. Although hydrogels are not common adsorbents for aromatic hydrocarbons, the results reported here rank GEL-SBA15 as a promising adsorbent for the removal of these pollutants from water.
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Affiliation(s)
- Juliê S da Costa
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900 Pelotas, RS, Brazil
| | - Emanuel G Bertizzolo
- Laboratório de Sólidos Inorgânicos (Lasir), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900 Pelotas, RS, Brazil
| | - Daniela Bianchini
- Laboratório de Sólidos Inorgânicos (Lasir), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900 Pelotas, RS, Brazil
| | - André R Fajardo
- Laboratório de Tecnologia e Desenvolvimento de Compósitos e Materiais Poliméricos (LaCoPol), Universidade Federal de Pelotas (UFPel), Campus Capão do Leão s/n, 96010-900 Pelotas, RS, Brazil.
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22
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Gan F, Cheng B, Jin Z, Dai Z, Wang B, Yang L, Jiang X. Hierarchical porous biochar from plant-based biomass through selectively removing lignin carbon from biochar for enhanced removal of toluene. CHEMOSPHERE 2021; 279:130514. [PMID: 33873068 DOI: 10.1016/j.chemosphere.2021.130514] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 03/08/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
This study proposed a simple and green air oxidation (AO) method to prepare hierarchical porous biochar by selectively removing lignin carbon from biochar after the pyrolysis of plant-based biomass, based on the fact that the thermal decomposition temperature in air between lignin carbon and cellulose/hemicellulose carbon was different. Three kinds of biomass with different lignocellulose contents were used, including walnut shell, cypress sawdust and rice straw. The results found that AO treatment could effectively improve the pore structure of the three biochar. The specific surface area of WCO-4, CCO-4 and RCO-4 was 555.0 m2/g, 418.7 m2/g and 291.9 m2/g, respectively, which was significantly higher than those of WC (319.5 m2/g), CC (381.7 m2/g) and RC (69.6 m2/g), respectively. Among these, walnut shell biochar with air oxidation (WCO) had higher surface area of 555.0 m2/g and mesopore volume of 0.116 cm3/g, this was related to its high content of lignin, which could facilitate the formation of mesopores by AO treatment with high selectivity. The toluene adsorption capacity of WCO reached 132.9 mg/g, which increased by 223.4% from that without AO treatment. The kinetics study indicated that the diffusion rates of toluene molecule were improved due to the increased mesopores volume of biochar and micropores also play an important role in the adsorption of toluene. The results demonstrate that AO treatment is a promising method to develop hierarchical porous structure for lignocellulose-rich plant-based biomass with low cost and environmental-friendly, which greatly enhanced the toluene adsorption capacity.
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Affiliation(s)
- Fengli Gan
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Bowen Cheng
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Ziheng Jin
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Zhongde Dai
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu, 610065, China
| | - Bangda Wang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu, 610065, China.
| | - Lin Yang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu, 610065, China
| | - Xia Jiang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu, 610065, China
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Muir B, Sobczyk M, Bajda T. Fundamental features of mesoporous functional materials influencing the efficiency of removal of VOCs from aqueous systems: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147121. [PMID: 34088064 DOI: 10.1016/j.scitotenv.2021.147121] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 03/26/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Volatile organic compounds (VOCs) are harmful contaminants that are emitted into the environment as a result of various commercial, industrial, and domestic practices. Their presence in water leads to pollution and poses a huge threat to the ecological environment and human health. They are typically released into the environment through a spill or inappropriate disposal which allows the chemicals to get absorbed into the ground or enter the sewage system. Thus far, several treatment methods have been developed to remove VOCs from water, including steam stripping or air stripping, ion exchange, filtration, adsorption, and application of various types of sorbents. Due to their cost-effectiveness and efficiency, the use of mesoporous materials, especially those synthesized from coal fly ash (FA), is recognized as the most promising strategy for slowing down the impact of VOCs. This study is believed to be the first to assess the advances made in improving the adsorption of VOCs by different functional mesoporous materials (FA, zeolites, mesoporous silica, metal organic frameworks). The impact associated with the properties of these materials is carefully summarized in this paper, in regard to their solid-state characteristics, material synthesis method, and surface modification. In addition, their chemical and physical interactions in solution, the reaction kinetics, and the influence of temperature and pH are described in detail. The aim of this work was to compare the sorption properties of the materials synthesized from FA with more complex mesoporous materials. This overview provides a comprehensive understanding of VOC removal from water systems using various functional materials, as well as helps in identifying the materials that may play a key role in the future.
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Affiliation(s)
- Barbara Muir
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Maciej Sobczyk
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059 Kraków, Poland
| | - Tomasz Bajda
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059 Kraków, Poland
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Boosted capture of volatile organic compounds in adsorption capacity and selectivity by rationally exploiting defect-engineering of UiO-66(Zr). Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118087] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Zhang J, Liu Y, Zhang J, Zuo J, Zhang J, Qiu F, Wei C, Miao S. Preparation of mesoporous coal gasification slag and applications in polypropylene resin reinforcement and deodorization. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Removal of Pesticides from Waters by Adsorption: Comparison between Synthetic Zeolites and Mesoporous Silica Materials. A Review. MATERIALS 2021; 14:ma14133532. [PMID: 34202727 PMCID: PMC8269501 DOI: 10.3390/ma14133532] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/19/2021] [Accepted: 06/23/2021] [Indexed: 01/19/2023]
Abstract
Pesticides are pollutants found in wastewater due to increasing agricultural activities over the years. Inappropriate dosing of pesticides results in the dispersal of active ingredients in the environment. The complete removal of pesticides from wastewater is an immediate concern due to their high toxicity and mobility. At present, adsorption is one of the most widely used methods for pesticide removal, in which synthetic zeolites and mesoporous silica materials are extensively applied. This article presents a systematic and comparative review of the applications and comparison of these adsorbents, based on the data reported in the literature. The paper summarizes the information collected from various studies, including the type of adsorbents and pesticides used, experimental conditions, and results of each work. The studies analyzed were laboratory-based and show potential advantages for the treatment of pesticide-bearing waters using functionalized and unfunctionalized synthetic zeolites and mesoporous silica materials. As a whole, functionalized materials are reported to exhibit better removal performance for different pesticides than conventional materials. It is expected that the results of this review will help researchers to establish a powerful strategy for the abatement of pesticides in wastewater.
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Chen T, Fu C, Liu Y, Pan F, Wu F, You Z, Li J. Adsorption of volatile organic compounds by mesoporous graphitized carbon: Enhanced organophilicity, humidity resistance, and mass transfer. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118464] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gao K, Ma M, Liu Y, Ma Z. A comparative study of the removal of o-xylene from gas streams using mesoporous silicas and their silica supported sulfuric acids. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124965. [PMID: 33440323 DOI: 10.1016/j.jhazmat.2020.124965] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
The three types of silica supported sulfuric acids (SSA), with the same sulfuric acid loading of 9.25 mmol g-1, were prepared by a wet impregnation method from silica gel (SG), SBA-15 and MCM-41. Characterization of the prepared SSA showed that two anchoring states coexisted for sulfuric acid supported on the surface of the silicas: A physiosorbed (P)-state sulfuric acid; and a chemically bonded (C)-state sulfuric acid. Dynamic adsorption results showed that each SSA had a significant removal capacity for o-xylene gas in the reactive temperature regions. The ranges of the reactive regions were 120-220 °C (SSA/SG), 120-230 °C (SSA/SBA-15) and 120-250 °C (SSA/MCM-41), and this could be attributed to the sulfonation reaction between o-xylene and the anchored sulfuric acid. SSA/MCM-41 showed the highest theoretical breakthrough adsorption capacity (QB, th, 526.71 mg g-1) compared with SSA/SBA-15 (363.54 mg g-1) and SSA/SG (239.15 mg g-1). QB, th was closely associated with the amount or proportion of the C-state sulfuric acid on the surface of each SSA. Optimum breakthrough time and QB, th was obtained by increasing the bed height and decreasing flow rate and inlet concentration. The SSA exhibited excellent recyclability and reuse performance over eight consecutive adsorption/desorption/regeneration cycles. The results suggested that the SSA, especially SSA/MCM-41, might have good potential in applications using adsorbents for the removal of BTEX pollutants.
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Affiliation(s)
- Kaiyin Gao
- Hebei Key Laboratory of Inorganic Nanomaterials, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, Hebei, PR China
| | - Mengze Ma
- Hebei Key Laboratory of Inorganic Nanomaterials, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, Hebei, PR China
| | - Yuheng Liu
- College of Pharmaceutical Sciences, Hebei Medical University, Shijiazhuang 050017, Hebei, PR China.
| | - Zichuan Ma
- Hebei Key Laboratory of Inorganic Nanomaterials, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, Hebei, PR China.
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29
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Ece MŞ. Synthesis and characterization of activated carbon supported magnetic nanoparticles (Fe O4/AC@SiO @Sulfanilamide) and its application in removal of toluene and benzene. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126231] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Oxidation Adsorptive Desulfurization of Jet Fuel Using Mesoporous Sieve Loaded with TiO
2. ChemistrySelect 2021. [DOI: 10.1002/slct.202004805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fonseca J, Choi S. Flexible amorphous metal-organic frameworks with π Lewis acidic pore surface for selective adsorptive separations. Dalton Trans 2021; 50:3145-3154. [PMID: 33543738 DOI: 10.1039/d1dt00079a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective separation of light hydrocarbons (LHs) and adsorption of volatile organic compounds (VOCs) remain expensive and complex scientific challenges in the petrochemical industry. Shape-selective adsorbent materials can cost-effectively face these demands. Two new porous, dynamic and amorphous metal-organic frameworks (MOFs), NEU-3 [= Zn(PMDA)(Py)2] and NEU-4 [= Fe(PMDA)(Py)2] are disclosed. These MOFs along with NEU-1c [= Zn(BPDI)(Py)2] and NEU-2 [= Fe(BPDI)(Py)2] display an electron-deficient pore surface due to predesigned π-electron-deficient ligands. They are unique smart guest-responsive materials owing to their π Lewis acidic pore surface and presumably their framework flexibility. A variety of effective adsorptions and adsorptive separations is achieved by using beds of NEU-1c, NEU-2, NEU-3 and NEU-4. Promising for further investigations into the petrochemical industry, NEU-4 shows ultrahigh benzene adsorption, recognition capability, selectivity for benzene over its analogues, and high stability and regenerability.
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Affiliation(s)
- Javier Fonseca
- Nanomaterial Laboratory for Catalysis and Advanced Separations, Department of Chemical Engineering, Northeastern University, 313 Snell Engineering Center, 360 Huntington Avenue, Boston, Massachusetts 02115-5000, USA.
| | - Sunho Choi
- Nanomaterial Laboratory for Catalysis and Advanced Separations, Department of Chemical Engineering, Northeastern University, 313 Snell Engineering Center, 360 Huntington Avenue, Boston, Massachusetts 02115-5000, USA.
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Meng X, Jin L, Yang C, Shi L, Liu N, Ma Z. Adsorption of toluene on silicalite‐1/NaY composites: Influence of NaY pretreatment on hydrophobic properties. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xuan Meng
- International Joint Research Center of Green Energy Chemical Engineering East China University of Science and Technology Shanghai China
| | - Linpeng Jin
- International Joint Research Center of Green Energy Chemical Engineering East China University of Science and Technology Shanghai China
| | - Chao Yang
- International Joint Research Center of Green Energy Chemical Engineering East China University of Science and Technology Shanghai China
| | - Li Shi
- International Joint Research Center of Green Energy Chemical Engineering East China University of Science and Technology Shanghai China
| | - Naiwang Liu
- International Joint Research Center of Green Energy Chemical Engineering East China University of Science and Technology Shanghai China
| | - Zhiming Ma
- International Joint Research Center of Green Energy Chemical Engineering East China University of Science and Technology Shanghai China
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33
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Wang B, Gan F, Dai Z, Ma S, Chen W, Jiang X. Air oxidation coupling NH 3 treatment of biomass derived hierarchical porous biochar for enhanced toluene removal. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123995. [PMID: 33265031 DOI: 10.1016/j.jhazmat.2020.123995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/04/2020] [Accepted: 09/13/2020] [Indexed: 06/12/2023]
Abstract
In this study, hierarchical porous biochar was prepared from poplar sawdust by air oxidation coupling with NH3 treatment for the removal of toluene. The results showed that the mesopore volume of the sample with air oxidation (PS‒O2) increased significantly to 0.263 cm3/g from the blank sample (PS, 0.053 cm3/g). This could be attributed to the selective removal of the lignin carbon by air oxidation to develop mesopores in biochar. Following further NH3 treatment (PS‒O2‒NH3), the basic surface chemistry on biochar was improved due to increased basic N-containing groups and decreased acidic O-containing groups, together with the micropore volume also increased to 0.231 cm3/g from 0.186 cm3/g of PS‒O2. The formation mechanism of hierarchical porous structure of biochar was also discussed. The adsorption capacity of PS‒O2‒NH3 for toluene reached 218.4 mg/g at the initial concentration of 820 mg/m3, which was 383.2% higher than that of PS. The adsorption isotherm study indicated that the adsorption process of toluene was monolayered and the maximal adsorption capacity of PS‒O2‒NH3 for toluene could reach as high as 476.2 mg/g. The results demonstrated that air oxidation coupling NH3 treatment is a highly effective method for the preparation of hierarchical porous biochar for enhancing toluene adsorption performance.
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Affiliation(s)
- Bangda Wang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, China
| | - Fengli Gan
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Zhongde Dai
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, China
| | - Shenggui Ma
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, China
| | - Wenhua Chen
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, China
| | - Xia Jiang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, China.
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Şahin Ö, Kutluay S, Horoz S, Ece MŞ. Fabrication and characterization of 3,4-diaminobenzophenone-functionalized magnetic nanoadsorbent with enhanced VOC adsorption and desorption capacity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:5231-5253. [PMID: 32964387 DOI: 10.1007/s11356-020-10885-y] [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: 04/29/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
The present study, for the first time, utilized 3,4-diaminobenzophenone (DABP)-functionalized Fe3O4/AC@SiO2 (Fe3O4/AC@SiO2@DABP) magnetic nanoparticles (MNPs) synthesized as a nanoadsorbent for enhancing adsorption and desorption capacity of gaseous benzene and toluene as volatile organic compounds (VOCs). The Fe3O4/AC@SiO2@DABP MNPs used in adsorption and desorption of benzene and toluene were synthesized by the co-precipitation and sol-gel methods. The synthesized MNPs were characterized by SEM, FTIR, TGA/DTA, and BET surface area analysis. Moreover, the optimization of the process parameters, namely contact time, initial VOC concentration, and temperature, was performed by applying response surface methodology (RSM). Adsorption results demonstrated that the Fe3O4/AC@SiO2@DABP MNPs had excellent adsorption capacity. The maximum adsorption capacities for benzene and toluene were found as 530.99 and 666.00 mg/g, respectively, under optimum process parameters (contact time 55.47 min, initial benzene concentration 17.57 ppm, and temperature 29.09 °C; and contact time 57.54 min, initial toluene concentration 17.83 ppm, and temperature 27.93 °C for benzene and toluene, respectively). In addition to the distinctive adsorptive behavior, the Fe3O4/AC@SiO2@DABP MNPs exhibited a high reproducibility adsorption and desorption capacity. After the fifth adsorption and desorption cycles, the Fe3O4/AC@SiO2@DABP MNPs retained 94.4% and 95.4% of its initial adsorption capacity for benzene and toluene, respectively. Kinetic and isotherm findings suggested that the adsorption mechanisms of benzene and toluene on the Fe3O4/AC@SiO2@DABP MNPs were physical processes. The results indicated that the successfully synthesized Fe3O4/AC@SiO2@DABP MNPs can be applied as an attractive, highly effective, reusable, and cost-effective adsorbent for the adsorption of VOC pollutants.Graphical abstract.
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Affiliation(s)
- Ömer Şahin
- Department of Chemical Engineering, Siirt University, 56100, Siirt, Turkey
| | - Sinan Kutluay
- Department of Chemical Engineering, Siirt University, 56100, Siirt, Turkey
| | - Sabit Horoz
- Department of Electrical & Electronics Engineering, Siirt University, 56100, Siirt, Turkey
| | - Mehmet Şakir Ece
- Vocational High School of Health Services, Mardin Artuklu University, 47100, Mardin, Turkey.
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Liu Z, Wang Z, Chen H, Cai T, Liu Z. Hydrochar and pyrochar for sorption of pollutants in wastewater and exhaust gas: A critical review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115910. [PMID: 33227697 DOI: 10.1016/j.envpol.2020.115910] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/03/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
Pollutants in wastewater and exhaust gas bring out serious concerns to public health and the environment. Biochar can be developed as a sustainable adsorbent originating from abundant bio-wastes, such as agricultural waste, forestry residue, food waste and human waste. Here we highlight the state-of-the-art research progress on pyrochar and hydrochar for the sorption of pollutants (heavy metal, organics, gas, etc) in wastewater and exhaust gases. The adsorption performance of pyrochar and hydrochar are compared and discussed in-depth, including preparation procedures (carbonization and activation), sorption possible mechanisms, and physiochemical properties. Challenges and perspective for designing efficient and environmental benign biochar-based adsorbents are finally addressed.
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Affiliation(s)
- Ziyun Liu
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Zihan Wang
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Hongxu Chen
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Tong Cai
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Zhidan Liu
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China.
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36
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Zeb S, Ali N, Ali Z, Bilal M, Adalat B, Hussain S, Gul S, Ali F, Ahmad R, khan S, Iqbal HM. Silica-based nanomaterials as designer adsorbents to mitigate emerging organic contaminants from water matrices. JOURNAL OF WATER PROCESS ENGINEERING 2020. [DOI: 10.1016/j.jwpe.2020.101675] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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37
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Submonolayer Vanadium and Manganese Binary Metal Oxides Supported on Three-Dimensionally Ordered Mesoporous CeO2 for Efficient Low-Temperature NH3–SCR. Catal Letters 2020. [DOI: 10.1007/s10562-020-03387-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Cheng H, Sun Y, Wang X, Zou S, Ye G, Huang H, Ye D. Hierarchical porous carbon fabricated from cellulose-degrading fungus modified rice husks: Ultrahigh surface area and impressive improvement in toluene adsorption. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122298. [PMID: 32105956 DOI: 10.1016/j.jhazmat.2020.122298] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 06/10/2023]
Abstract
The porous carbon materials formed from biomass precursors are promising candidates for adsorbing organic vapor pollutants. However, these materials have insufficient pores, which hinder their accessibility to adsorbates. This study develops an ultrahigh-surface-area porous carbon adsorbent with interlacing micro-mesoporous structures through Trichoderma viride decomposition. An orthogonal experiment is conducted, and the most suitable conditions for fabricating porous carbon with an ultrahigh SBET of 3714 m2.g-1 and a hierarchical porous structure are identified. This work achieves one of the highest specific surface areas of biomass carbons among recent studies. T. viride corrodes the internal and external microstructures of rice husks, and regulates the lignin, cellulose, and hemicellulose contents, which improve the efficiency of carbonization and chemical activation. The carbonaceous materials with microbial pretreatment exhibit better toluene adsorption performances (100 ppm: 708 mg.g-1), adsorption rates, and cyclic utilization than those without pretreatment (100 pm: 538 mg.g-1). In addition, grand canonical Monte Carlo simulation is conducted. The micropores and mesopores created after microbial pretreatment are effective toluene adsorption sites. Moreover, the diffusion coefficient calculated by utilizing Thomas model and Chemical diffusion verify that the mesopores accelerate the kinetic process of toluene adsorption.
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Affiliation(s)
- Hairong Cheng
- School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Yuhang Sun
- School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Xiaohong Wang
- School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Sibei Zou
- School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Guangzheng Ye
- School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China
| | - Haomin Huang
- School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, 510006 Guangzhou, China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), 510006 Guangzhou, China; Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, 510006 Guangzhou, China.
| | - Daiqi Ye
- School of Environment and Energy, South China University of Technology, 510006 Guangzhou, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, 510006 Guangzhou, China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), 510006 Guangzhou, China; Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, 510006 Guangzhou, China.
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40
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Chen J, Sun C, Huang Z, Qin F, Xu H, Shen W. Fabrication of Functionalized Porous Silica Nanocapsules with a Hollow Structure for High Performance of Toluene Adsorption-Desorption. ACS OMEGA 2020; 5:5805-5814. [PMID: 32226860 PMCID: PMC7097888 DOI: 10.1021/acsomega.9b03982] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 03/02/2020] [Indexed: 05/14/2023]
Abstract
Functionalized mesoporous silicas are an emerging kind of adsorbents for the removal of volatile organic compounds (VOCs). Breaking the limitations of traditional mesoporous silica, in this study, porous silica nanocapsules (PSNs) functionalized with phenyl and n-octyl groups (named as p-PSN and n-PSN, respectively) were developed for the first time. Under dry conditions, the PSNs exhibited highest dynamic adsorption capacity and desorption efficiency among the ever-reported typical adsorbents (i.e., SBA-15, KIT-6, silicalite-1, and activated carbon). Under wet conditions, the functionalized PSNs made up the defects of pure PSNs, displaying excellent hydrophobicity. The Q WET for n-PSN and p-PSN increased by 44 and 76%, respectively, as compared with that of pure PSNs in 50% relative humidity. The Henry constant of static adsorption demonstrated that p-PSN had a better capture ability for toluene, which was owing to the π-interaction between the phenyl groups and the toluene molecules. In addition, p-PSN showed considerable stability after six consecutive dynamic adsorption-desorption cycles in 50% relative humidity.
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41
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Li X, Zhang L, Yang Z, Wang P, Yan Y, Ran J. Adsorption materials for volatile organic compounds (VOCs) and the key factors for VOCs adsorption process: A review. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116213] [Citation(s) in RCA: 258] [Impact Index Per Article: 64.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Zhang J, Zuo J, Ai W, Liu S, Zhu D, Zhang J, Wei C. Preparation of a new high-efficiency resin deodorant from coal gasification fine slag and its application in the removal of volatile organic compounds in polypropylene composites. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121347. [PMID: 31606254 DOI: 10.1016/j.jhazmat.2019.121347] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 09/23/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
Deodorizing materials are often restricted from large-scale industrial production due to the high preparation cost. By utilizing the simple acid leaching technology, this study made use of the coal gasification fine slag (FS) as raw material to prepare a cost effective FS-based deodorant (FSD) with a specific surface area of 393 m2 g-1 and a pore volume of 0.405 cm3 g-1. The propane adsorption test on FSD showed the maximum adsorption capacity to be as high as 121.61 mg g-1 at 273 K. The partition coefficient values at 10% and 100% breakthrough (BT) for FSD to adsorb propane were 1.5 × 10-3 and 3.2 × 10-4 mol kg-1 Pa-1, respectively. Furthermore, the FSD was applied in the removal of volatile organic compounds (VOCs) pollutants from polypropylene resin (PP). It showed that the deodorizing effect of the FSD was nearly three times as good as the commonly used zeolite deodorants, which was able to decrease 50 percent of the VOCs volatilization amount in PP resin. Moreover, the FSD can better strengthen the mechanical properties of PP resin. This work provides a new method for the industrial production of deodorants as well as a new direction for the recycle of coal gasification wastes.
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Affiliation(s)
- Jiupeng Zhang
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Jing Zuo
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Weidong Ai
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Shuo Liu
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Dandan Zhu
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Jinyi Zhang
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Cundi Wei
- Key Laboratory of Automobile Materials (Ministry of Education), College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China.
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Li X, Yuan J, Du J, Sui H, He L. Functionalized Ordered Mesoporous Silica by Vinyltriethoxysilane for the Removal of Volatile Organic Compounds through Adsorption/Desorption Process. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06062] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Jingjuan Yuan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
| | - Jinze Du
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
| | - Hong Sui
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Lin He
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- National Engineering Research Centre of Distillation Technology, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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Temel F, Kutluay S. Investigation of high-performance adsorption for benzene and toluene vapors by calix[4]arene based organosilica (CBOS). NEW J CHEM 2020. [DOI: 10.1039/d0nj02081h] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Calix[4]arene based organosilica (CBOS) was successfully prepared, characterized, and used for the adsorption of benzene and toluene vapors for the first time. The benzene and toluene vapor uptake of CBOS was determined to be 606 and 672 mg g−1, respectively.
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Affiliation(s)
- Farabi Temel
- Konya Technical University, Department of Chemical Engineering
- Konya
- Turkey
| | - Sinan Kutluay
- Department of Chemical Engineering
- Siirt University
- Siirt
- Turkey
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45
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Liu X, Luo XS, Fu HX, Fan W, Chen SL, Huang MH. Irreversible tautomerization as a powerful tool to access unprecedented functional porous organic polymers with a tris(β-keto-hydrazo)cyclohexane subunit (TKH-POPs). Chem Commun (Camb) 2020; 56:2103-2106. [DOI: 10.1039/c9cc09710d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Irreversible tautomerization could lead to fascinating functional porous organic polymers such as TKH-POPs comprising tris(β-keto-hydrazo)-cyclohexane subunit.
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Affiliation(s)
- Xiangxiang Liu
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
- Patent Examination Cooperation (Beijing) Center of the Patent Office
| | - Xian-Sheng Luo
- School of Materials Science and Engineering
- Experimental Center for Advanced Materials
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Hao-Xi Fu
- School of Materials Science and Engineering
- Experimental Center for Advanced Materials
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Wenhao Fan
- Beijing Center for Physical & Chemical Analysis
- Beijing
- China
| | - Shi-Lu Chen
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Mu-Hua Huang
- School of Materials Science and Engineering
- Experimental Center for Advanced Materials
- Beijing Institute of Technology
- Beijing 100081
- China
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46
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Sabeela NI, Almutairi TM, Al-Lohedan HA, Ezzat AO, Atta AM. Reactive Mesoporous pH-Sensitive Amino-Functionalized Silica Nanoparticles for Efficient Removal of Coomassie Blue Dye. NANOMATERIALS 2019; 9:nano9121721. [PMID: 31810331 PMCID: PMC6955940 DOI: 10.3390/nano9121721] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/21/2019] [Accepted: 11/28/2019] [Indexed: 01/25/2023]
Abstract
In this work, new smart mesoporous amine-functionalized silica nanoparticles were prepared from hydrolyzing microgels based on N-isopropyl acrylamide-co-vinyltrimethoxysilane microgels with tetraethoxysilicate and 3-aminopropyltriethoxysilane by sol-gel method. The thermal stability and Fourier transform infrared were used to determine the amine contents of the silica nanoparticles. The pH sensitivity of the synthesized silica nanoparticles in their aqueous solutions was evaluated by using dynamic light scattering (DLS) and zeta potential measurements. The porosity of the amine-functionalized silica nanoparticles was evaluated from a transmittance electron microscope and Brunauer-Emmett-Teller (BET) plot. The results have positively recommended the pH-sensitive amine-functionalized silica nanoparticles as one of the effective nano-adsorbent to remove 313 mg·g−1 of CB-R250 water pollutant.
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Affiliation(s)
- Nourah I. Sabeela
- Surfactants Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.I.S.); (A.O.E.)
| | - Tahani M. Almutairi
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Hamad A. Al-Lohedan
- Surfactants Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.I.S.); (A.O.E.)
| | - Abdelrahman O. Ezzat
- Surfactants Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.I.S.); (A.O.E.)
| | - Ayman M. Atta
- Surfactants Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.I.S.); (A.O.E.)
- Correspondence:
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47
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Li R, Chong S, Altaf N, Gao Y, Louis B, Wang Q. Synthesis of ZSM-5/Siliceous Zeolite Composites for Improvement of Hydrophobic Adsorption of Volatile Organic Compounds. Front Chem 2019; 7:505. [PMID: 31380349 PMCID: PMC6647869 DOI: 10.3389/fchem.2019.00505] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/02/2019] [Indexed: 11/23/2022] Open
Abstract
In this research, we investigated the hydrophobicity and dynamic adsorption-desorption behaviors of volatile organic compounds (VOCs) by applying different optimized coating dosage (25, 50, and 75%) on designed novel ZSM-5/MCM-41 and ZSM-5/Silicalite-1 hierarchical composites. The relatively large specific surface area and pore volume of adsorbents ZSM-5/MCM-41 and ZSM-5/Silicalite-1 composites with excellent stability were affirmed by ex-situ XRD, FTIR, BET, SEM, and water contact angle analyses. Regarding, toluene adsorption-desorption investigation, ZSM-5/MCM-41 composite lead a longer stable toluene breakthrough time no matter under dry or 50% humid conditions. However, under different loading dosage condition, the breakthrough time of 75% coating ratio was the longest, which was 1.6 times as long as that of pure ZSM-5 under wet adsorption. Meanwhile, the complete elimination of toluene for ZSM-5/MCM-41-75% was done by largest desorption peak area and the lowest desorption temperature of 101.9°C, while, the largest contact angle of ZSM-5/MCM-41-75% was 17.0° higher than pure ZSM-5 zeolite. Therefore, we believe that the present hydrophobic sorbent will provide new insight with great research potential for removing low concentration of VOCs at industrial scale.
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Affiliation(s)
- Renna Li
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Shijia Chong
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Naveed Altaf
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Yanshan Gao
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Benoit Louis
- ICPEES - Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé, UMR 7515 CNRS - Université de Strasbourg, Strasbourg, France
| | - Qiang Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
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48
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Liu S, Peng Y, Yan T, Zhang Y, Crittenden J, Li J. Modified Silica Adsorbents for Toluene Adsorption under Dry and Humid Conditions: Impacts of Pore Size and Surface Chemistry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8927-8934. [PMID: 31199161 DOI: 10.1021/acs.langmuir.9b01031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The pore surface structure and chemistry of the ordered mesoporous silica adsorbent (KIT-6) were modified for toluene removal, including the substituent groups on the silica surface and the pore size uniformity. Uniform pore size was obtained by low-temperature heat treatment of the template at 200 °C. In the dynamic adsorption process, better channel uniformity led to higher adsorption capacity under no humidity condition because of faster pore diffusion. However, better channel uniformity resulted in poor hydrophobicity under high humidity condition because it favors the adsorption of water vapor to a greater extent. The result of Biot number indicated that triphenyl-grafted KIT-6 had a faster intraparticle mass transfer rate than pure KIT-6. Triphenyl-grafted KIT-6 had a higher adsorption capacity for toluene as compared to phenyl-grafted KIT-6 under no humidity condition because of its higher surface area ( SA). The higher SA was owing to the low modification of phenyl, which was caused by the isolated grafting of silicon triphenyl rather than a more even coverage by silicon phenyl. As a result, triphenyl-grafted KIT-6 exposed more hydrophilic Si-O-Si groups and therefore was less hydrophobic than phenyl-grafted KIT-6.
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Affiliation(s)
- Shuai Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment , Tsinghua University , Beijing 100084 , China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment , Tsinghua University , Beijing 100084 , China
| | - Tao Yan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment , Tsinghua University , Beijing 100084 , China
| | - Yani Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment , Tsinghua University , Beijing 100084 , China
| | - John Crittenden
- Brook Byers Institute for Sustainable Systems and School of Civil and Environmental Engineering , Georgia Institute of Technology , 828 West Peachtree Street , Atlanta , Georgia 30332 , United States
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment , Tsinghua University , Beijing 100084 , China
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Zhang W, Cheng H, Niu Q, Fu M, Huang H, Ye D. Microbial Targeted Degradation Pretreatment: A Novel Approach to Preparation of Activated Carbon with Specific Hierarchical Porous Structures, High Surface Areas, and Satisfactory Toluene Adsorption Performance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7632-7640. [PMID: 31157973 DOI: 10.1021/acs.est.9b01159] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hierarchical porous carbon shows great potential for volatile organic compounds (VOCs) removal due to its high surface area and abundant porous framework. However, current fabrication protocols are complex and cause secondary pollution, limiting their application. Here, as a novel strategy, microbial lignocellulose decomposition as a pretreatment was introduced to fabricate hierarchical porous carbon (M-AC) from crude biomass substrate. The M-AC samples had high specific surface areas (maximum: 2290 m2·g-1) and surfaces characterized by needle-like protrusions with a high degree of disorder attributed to hierarchical porous structures. Dynamic toluene adsorption indicated that the carbon materials with microbial pretreatment had much better adsorption performances (maximum: 446 mg/g) than activated carbon without pretreatment. The M-AC material pretreated with a cellulose-degrading microbe showed the best adsorption capacity due to well-developed micropores, whereas the M-AC material pretreated with a lignin-degrading microbe showed excellent transport diffusion due to well-developed mesopores. Therefore, this simple and effective approach using microbial decomposition pretreatment is promising for the development of hierarchical porous carbons with adjustable pore structures and high specific surface areas to remove target VOCs in practical applications.
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Affiliation(s)
- Weixia Zhang
- School of Environment and Energy , South China University of Technology , 510006 Guangzhou , China
| | - Hairong Cheng
- School of Environment and Energy , South China University of Technology , 510006 Guangzhou , China
| | - Qi Niu
- School of Environment and Energy , South China University of Technology , 510006 Guangzhou , China
| | - Mingli Fu
- School of Environment and Energy , South China University of Technology , 510006 Guangzhou , China
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment , 510006 Guangzhou , China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT) , 510006 Guangzhou , China
- Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal , South China University of Technology , 510006 Guangzhou , China
| | - Haomin Huang
- School of Environment and Energy , South China University of Technology , 510006 Guangzhou , China
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment , 510006 Guangzhou , China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT) , 510006 Guangzhou , China
- Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal , South China University of Technology , 510006 Guangzhou , China
| | - Daiqi Ye
- School of Environment and Energy , South China University of Technology , 510006 Guangzhou , China
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment , 510006 Guangzhou , China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT) , 510006 Guangzhou , China
- Guangdong Provincial Engineering and Technology Research Centre for Environmental Risk Prevention and Emergency Disposal , South China University of Technology , 510006 Guangzhou , China
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50
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Zhu X, Jiang W, Cui W, Liang R, Zhang L, Qiu J. Facile surface modification of mesoporous silica with heterocyclic silanes for efficiently removing arsenic. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.02.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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