Reducing CO2 level in the indoor urban built environment: Analysing indoor plants under different light levels

Weerasinghe, Nilanka Harshani; Silva, Pasindu Kavishna; Jayasinghe, Rohantha Rukshan; Abeyrathna, Wasudha Prabodhani; John, Gayanthi Krishani Perera; Halwatura, Rangika Umesh

doi:10.1016/j.clet.2023.100645

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…For example, research has shown that certain plant species used indoors like Nephrolepis exaltata (Boston fern) perform less effectively in reducing CO 2 concentration and particulate matter compared to Epipremnum aureum (golden pothos), Chlorophytum comosum (spider plant) or a combination of different plants [ 63 ]. The prominence of light conditions as the principal variable cannot be understated in the context of CO 2 mitigation through indoor vegetation, especially given that plants can yield elevated CO 2 during their respiration [ 64 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of indoor plants on CO2 concentration, indoor air temperature and relative humidity in office buildings

Jiang,

Irga,

Coe

et al. 2024

PLoS ONE

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This experimental study investigates the influence of indoor plants on three aspects of air quality in office spaces: relative humidity, indoor air temperature, and carbon dioxide concentration. Employing a Latin square design, we rotated three different treatments across three offices over six time periods. These treatments included a control (no plants), a low-volume treatment (five plants), and a high-volume treatment (eighteen plants) of Nephrolepis exaltata (Boston fern). Air quality parameters were continuously monitored at five-minute intervals using Trace Gas Analyzers. Generalised linear mixed modelling (GLMM) was employed to examine the effect of each treatment on relative humidity, indoor air temperature and CO2 concentration. We observed a significant positive correlation between the number of indoor plants and relative humidity levels. In offices without any plants, the median relative humidity was 29.1%. This increased to 38.9% in offices with 5 plants and further to 49.2% in offices with 18 plants. However, we did not find significant associations between the number of indoor plants and indoor air temperature or corrected CO2 concentration. Our research provides support for the use of indoor plants to increase relative humidity, which can have health benefits in dry climates, but does not provide support for using indoor plants to regulate indoor air temperatures or CO2 concentration in office environments.

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Section: Discussionmentioning

confidence: 99%

Effects of indoor plants on CO2 concentration, indoor air temperature and relative humidity in office buildings

Jiang,

Irga,

Coe

et al. 2024

PLoS ONE

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“…Dominici et al [21] showed that plants showed the highest CO 2 removal in 200 µmol m −2 s −1 with the 15 • light inclinations. Other plants showed the ability to reduce their concentrations of CO 2 even when the intensity of light was low [57]. Through transpiration, water is transported from the roots to the leaves, where it is released into the atmosphere as water vapor, leading to an increase in the humidity of the chamber containing the plant.…”

Section: The Effectiveness Of Plants At Reducing Co2 and Controlling ...mentioning

confidence: 99%

Assessment of the Air Cleaning Performance and Humidity and Temperature Control by Five Evergreen Woody Plants

Bui,

Park,

Lee

et al. 2023

Atmosphere

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Indoor air quality (IAQ) directly affects human health. The increase in PM and CO2 concentration indoors caused an increase in the prevalence of sick building syndrome (SBS) symptoms. Plants could contribute to reducing particulate matter (PM) and CO2. This study identifies the most efficient evergreen plant species for improving indoor air quality by assessing the ability of five different indigenous Korean evergreen plant species to reduce PM and CO2 and regulate humidity and temperature under indoor environmental conditions in acrylic chambers. The clean air delivery rates (CADR) were calculated to evaluate the efficacy of plants in reducing PM and CO2. We assessed the performance of removing the five study plants on PM1 (~0.68–3.01 m3/h/leaf area), PM2.5 (~0.73–3.08 m3/h/leaf area), PM10 (~0.67–3.04 m3/h/leaf area), and CO2 (~0.48–1.04 m3/h/leaf area). The species Ilex pedunculosa, Pittosporum tobira, and Gardenia jasminoides were the most effective at reducing PM. The CADR of CO2 also differed among the five plant species and corresponded to their photosynthetic rate. Viburnum odoratissimum var. awabuki, which had the high photosynthetic rate, was most effective at reducing CO2. By contrast, PM reduction was correlated with plant leaf structure. Plants with a high leaf density can accumulate more PM. The plants were also able to control temperature and humidity. The average temperature of the control chamber was higher, and the humidity was lower than that of the plant chambers. In this study, the five evergreen species effectively reduced air pollutants and can be used to improve IAQ.

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Evaluation the carbon sequestration potentiality of some plant species investigating the highest CO2 consumption for mitigation of climate change

Ghowail,

Vangone,

Guerretti

et al. 2024

Euro-Mediterr J Environ Integr

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Reducing CO2 level in the indoor urban built environment: Analysing indoor plants under different light levels

Cited by 8 publications

References 29 publications

Effects of indoor plants on CO2 concentration, indoor air temperature and relative humidity in office buildings

Effects of indoor plants on CO2 concentration, indoor air temperature and relative humidity in office buildings

Assessment of the Air Cleaning Performance and Humidity and Temperature Control by Five Evergreen Woody Plants

Evaluation the carbon sequestration potentiality of some plant species investigating the highest CO2 consumption for mitigation of climate change

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