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Mondal SK, Aina P, Rownaghi AA, Rezaei F. Cooperative and Bifunctional Adsorbent-Catalyst Materials for In-situ VOCs Capture-Conversion. Chempluschem 2024; 89:e202300419. [PMID: 38116915 DOI: 10.1002/cplu.202300419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 12/21/2023]
Abstract
Volatile organic compounds (VOCs) are gases that are emitted into the air from products or processes and are major components of air pollution that significantly deteriorate air quality and seriously affect human health. Different types of metals, metal oxides, mixed-metal oxides, polymers, activated carbons, zeolites, metal-organic frameworks (MOFs) and mixed-matrixed materials have been developed and used as adsorbent or catalyst for diversified VOCs detection, removal, and destruction. In this comprehensive review, we first discuss the general classification of VOCs removal materials and processes and outline the historical development of bifunctional and cooperative adsorbent-catalyst materials for the removal of VOCs from air. Subsequently, particular attention is devoted to design of strategies for cooperative adsorbent-catalyst materials, along with detailed discussions on the latest advances on these bifunctional materials, reaction mechanisms, long-term stability, and regeneration for VOCs removal processes. Finally, challenges and future opportunities for the environmental implementation of these bifunctional materials are identified and outlined with the intent of providing insightful guidance on the design and fabrication of more efficient materials and systems for VOCs removal in the future.
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Affiliation(s)
- Sukanta K Mondal
- Linda and Bipin Doshi Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, MO 65409-1230, United States
| | - Peter Aina
- Linda and Bipin Doshi Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, MO 65409-1230, United States
- Department of Chemical, Environmental and Materials Engineering, University of Miami, Miami, FL 33124, United States
| | - Ali A Rownaghi
- National Energy Technology Laboratory, United States Department of Energy, Pittsburgh, PA 15236, United States
| | - Fateme Rezaei
- Linda and Bipin Doshi Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, MO 65409-1230, United States
- Department of Chemical, Environmental and Materials Engineering, University of Miami, Miami, FL 33124, United States
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Grande CA. Modelling of adsorption technologies for controlling indoor air quality. ADSORPTION 2022. [DOI: 10.1007/s10450-022-00354-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractTechnologies for control of indoor air quality are very important to ensure that health and comfort conditions are attained in closed environments. The indoor air quality market is fertile ground for adsorption technologies, both at larger industrial scale and for residential uses. The common strategy to design adsorption technologies considers constant inlet conditions, while for most indoor air control applications, the inlet conditions will change because of the partial removal of the contaminant. This work presents a generic modelling approach, where the adsorption technology is coupled with the indoor environment to be controlled. This approach enables a tailored and more accurate process design and additionally, it can also assist in the physical location of the removal unit and sensors to control its operation. Two different examples of application of this methodology are provided: control of CO2 in tightly closed environments and "peak shaving" of water vapor in bathrooms.
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Adebayo BO, Trautman J, Al-Naddaf Q, Rownaghi AA, Rezaei F. Passive Control of Indoor Formaldehyde by Mixed-Metal Oxide Latex Paints. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:9255-9265. [PMID: 34101438 DOI: 10.1021/acs.est.1c00912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This work reports the incorporation of mixed-metal oxides (MMOs) such as Si/Ti and Si/Zr into latex paints in the form of thin coatings for permanent trapping of indoor formaldehyde. The formaldehyde removal performance of the surface coatings was evaluated in a lab-scale indoor air chamber, and the results were compared with those of powder analogues. Due to the pore blockage by the latex, the incorporation led to 6-30% reduction in adsorption capacity and 50-70% drop in the adsorption rate for MMO-latex paints relative to their powder MMO analogues. Under the operating conditions of concentration, temperature, and relative humidity, the Si/Zr-latex paints outperformed the Si/Ti counterparts. It was also observed that performance could decrease over excessive loading, for example, Si/Zr-latex paint with 15/1 Si/Zr weight ratio showed a 20% lower adsorption capacity than that of the Si/Zr-latex paint with 25/1 Si/Zr ratio at 5 ppmv, 25 °C, and 70% RH. While high temperature greatly reduced the adsorption rate of the MMO-latex paints, high humidity slightly promoted the rate of formaldehyde capture. In 10 L, flow-through chamber tests, 25Si/Zr-latex paint reduced 5 ppmv formaldehyde by up to 60% at 25 °C and 70% RH with an adsorption rate of 0.34 ppmv/h. Overall, this study highlights the potential of MMO-latex paints with optimized formation for the efficient abatement of indoor aldehydes.
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Affiliation(s)
- Busuyi O Adebayo
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 1101 N State Street, Rolla, Missouri 65409, United States
| | - Jacob Trautman
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 1101 N State Street, Rolla, Missouri 65409, United States
| | - Qasim Al-Naddaf
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 1101 N State Street, Rolla, Missouri 65409, United States
| | - Ali A Rownaghi
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 1101 N State Street, Rolla, Missouri 65409, United States
| | - Fateme Rezaei
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 1101 N State Street, Rolla, Missouri 65409, United States
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Tang X, Houzé de l'Aulnoit S, Buelow MT, Slack J, Singer BC, Destaillats H. Performance of a CO 2 sorbent for indoor air cleaning applications: Effects of environmental conditions, sorbent aging, and adsorption of co-occurring formaldehyde. INDOOR AIR 2020; 30:1283-1295. [PMID: 32453891 DOI: 10.1111/ina.12695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 05/02/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
Indoor air cleaning systems that incorporate CO2 sorbent materials enable HVAC load shifting and efficiency improvements. This study developed a bench-scale experimental system to evaluate the performance of a sorbent under controlled operation conditions. A thermostatic holder containing 3.15 g sorbent was connected to a manifold that delivered CO2 -enriched air at a known temperature and relative humidity (RH). The air stream was also enriched with 0.8-2.1 ppm formaldehyde. The CO2 concentration was monitored in real-time upstream and downstream of the sorbent, and integrated formaldehyde samples were collected at different times using DNPH-coated silica cartridges. Sorbent regeneration was carried out by circulating clean air in countercurrent. Almost 200 loading/regeneration cycles were performed in the span of 17 months, from which 104 were carried out at reference test conditions defined by loading with air at 25°C, 38% RH, and 1000 ppm CO2 , and regenerating with air at 80°C, 3% RH and 400 ppm CO2 . The working capacity decreased slightly from 43-44 mg CO2 per g sorbent to 39-40 mg per g over the 17 months. The capacity increased with lower loading temperature (in the range 15-35°C) and higher regeneration temperature, between 40 and 80°C. The CO2 capacity was not sensitive to the moisture content in the range 6-9 g/m3 , and decreased slightly when dry air was used. Loading isothermal breakthrough curves were fitted to three simple adsorption models, verifying that pseudo-first-order kinetics appropriately describes the adsorption process. The model predicted that equilibrium capacities decreased with increasing temperature from 15 to 35°C, while adsorption rate constants slightly increased. The formaldehyde adsorption efficiency was 80%-99% in different cycles, corresponding to an average capacity of 86 ± 36 µg/g. Formaldehyde was not quantitatively released during regeneration, but its accumulation on the sorbent did not affect CO2 adsorption.
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Affiliation(s)
- Xiaochen Tang
- Indoor Environment Group, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | | | | | - Jonathan Slack
- Indoor Environment Group, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Brett C Singer
- Indoor Environment Group, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Hugo Destaillats
- Indoor Environment Group, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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Nature-Based Solution for Reducing CO2 Levels in Museum Environments: A Phytoremediation Study for the Leonardo da Vinci’s “Last Supper”. SUSTAINABILITY 2020. [DOI: 10.3390/su12020565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This work investigates the possibility of implementing a nature-based solution (NBS) based on the photosynthetic process of Laurus nobilis L. (common laurel), for reducing peak CO2 concentrations in an air-tight museum environment, namely the Refectory of the Santa Maria delle Grazie Church (Milan, Italy), home of Leonardo da Vinci’s painting “Last Supper”. The phytoremediation potential of laurel plants was evaluated at CO2 ≅ 1000 ppm under controlled environmental conditions. Furthermore, light-saturated net assimilation (Pnmax) was measured at two CO2 concentrations (380 and 1000 ppm) during the growing season. Steady-state gas exchanges were not affected by elevated CO2 in the short-term, while Pnmax was significantly increased, also showing higher values in spring and autumn, and a reduction during summer. Our estimated CO2 removal rates indicate that, in order to control visitors’ respiratory CO2 emissions in view of an increase in visitor numbers in the Refectory, a possible NBS in the form of an external greenhouse, connected to the HVAC system of the museum, should allocate from 58 to 112 young laurel plants, depending on their seasonal phytoremediation capacity. These results, although preliminary, allow to hypothesize the possibility of controlling CO2 indoors through a combination of traditional air-cleaning systems and a properly designed NBS, thus increasing the sustainability of air-tight museum environments.
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Zhao Y, Zhou J, Fan L, Chen L, Li L, Xu ZP, Qian G. Indoor CO2 Control through Mesoporous Amine-Functionalized Silica Monoliths. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03338] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | - Li Li
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Zhi Ping Xu
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
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Krishnamurthy A, Salunkhe B, Zore A, Rownaghi A, Schuman T, Rezaei F. Amine-Based Latex Coatings for Indoor Air CO 2 Control in Commercial Buildings. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16594-16604. [PMID: 30973709 DOI: 10.1021/acsami.9b02934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
High levels of indoor air CO2 in commercial buildings can lead to various health effects, commonly known as sick building syndrome. Passive control of indoor air CO2 through solid adsorbents incorporated into the paint offers a high potential to handle CO2 without utilizing much energy. This study focuses on incorporating silica-supported aminopolymers into a polyacrylic-based latex that could be used as a buffer material for the passive control of CO2 in enclosed environments. To maximize the effect of the pigment (adsorbent), paints were all prepared at critical pigment volume concentration (CPVC) levels. CO2 at 800 and 3000 ppm were used to asses both low and high level contaminations. The removal efficiency of the surface coatings was evaluated within typical time frames (10 h for adsorption and desorption). Our laboratory-scale chamber results indicated that the silica-tetraethylenepentamine-based paint with 70 wt % loading exhibits the best adsorption performance, comparable to that of the powder-based sorbent, with only a ∼20% decrease in the adsorption efficiency. Our results also revealed that the optimization of paint formulation is critical in passively controlling indoor air CO2. The findings of this study highlight the potential of amine-based adsorbents as pigments in high PVC paints for indoor CO2 control in commercial buildings.
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Krishnamurthy A, Thakkar H, Rownaghi AA, Rezaei F. Adsorptive Removal of Formaldehyde from Air Using Mixed-Metal Oxides. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02962] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anirudh Krishnamurthy
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 1101 N. State Street, Rolla, Missouri 65409, United States
| | - Harshul Thakkar
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 1101 N. State Street, Rolla, Missouri 65409, United States
| | - Ali A. Rownaghi
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 1101 N. State Street, Rolla, Missouri 65409, United States
| | - Fateme Rezaei
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 1101 N. State Street, Rolla, Missouri 65409, United States
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Thakkar H, Issa A, Rownaghi AA, Rezaei F. CO2Capture from Air Using Amine-Functionalized Kaolin-Based Zeolites. Chem Eng Technol 2017. [DOI: 10.1002/ceat.201700188] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Harshul Thakkar
- Missouri University of Science and Technology; Department of Chemical and Biochemical Engineering; 1101 N State St. 65409 Rolla, MO USA
| | - Ahlam Issa
- Missouri University of Science and Technology; Department of Chemical and Biochemical Engineering; 1101 N State St. 65409 Rolla, MO USA
| | - Ali A. Rownaghi
- Missouri University of Science and Technology; Department of Chemical and Biochemical Engineering; 1101 N State St. 65409 Rolla, MO USA
| | - Fateme Rezaei
- Missouri University of Science and Technology; Department of Chemical and Biochemical Engineering; 1101 N State St. 65409 Rolla, MO USA
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