scholarly journals Phytoremediation of Formaldehyde in Indoor Environment With Common House Plants and Pseudomonas Chlororaphis

2021 ◽  
pp. 1-7
Author(s):  
Seemaa Ghate ◽  
Keyword(s):  
Indoor Environment ◽  
Pseudomonas Chlororaphis ◽  
Health Issues ◽  
Indoor Pollutants ◽  
Removal Capacity ◽  
Epipremnum Aureum ◽  
Formaldehyde Removal ◽  
Chlorophytum Comosum ◽  
Gaseous Formaldehyde ◽  
Air Circulation

Low light survivor house plants were assessed for their formaldehyde removal capacity from indoor environment. Low ventilation leading to poor air circulation in indoor environment has become a matter of grave concern as it leads to health issues. Phytoremediation technology is being studied in such situations. The capacity of plants in absorbing indoor pollutants can be enhanced through use of bacteria helping phytoremediation process. The gaseous formaldehyde of about 5 ppm was released into the static chamber of volume 1 m3 . Selected test plants were Aglaonema commutatum, Chlorophytum comosum, Sansevieria trifasciata and Epipremnum aureum. Medium in which plants were growing was inoculated with Pseudomonas chlororaphis, which helps the process of phytoremediation. Activated charcoal was also added in the medium, to increase the absorptive surface. The exposure given was for 24 hours. Experiment was replicated for three times. Air quality in the chamber was monitored on advanced Formaldehyde meter, at the start of the experiment and after 24 hours. Leaves of the plants were analysed by DNPH on LCMS method for quantification of Formaldehyde. Quantification of Formaldehyde from leaves ranged between 0.03–4.7 ppm. Formaldehyde meter showed reduction in formaldehyde quantity ranges from 1.999 to 0 ppm in 24 hours. This clearly indicates that selected plants have enhanced limited capacity of formaldehyde absorption in synergy with Pseudomonas chlororaphis.

scholarly journals Effectiveness of Houseplants in Reducing the Indoor Air Pollutant Ozone

2009 ◽  
Vol 19 (2) ◽  
pp. 286-290 ◽  
Author(s):  
Heather L. Papinchak ◽  
E. Jay Holcomb ◽  
Teodora Orendovici Best ◽  
Dennis R. Decoteau
Keyword(s):  
Ozone Depletion ◽  
Indoor Environment ◽  
Air Pollutant ◽  
Ozone Concentrations ◽  
Air Supply ◽  
Epipremnum Aureum ◽  
Chlorophytum Comosum ◽  
Continuously Stirred Tank Reactor ◽  
Spider Plant ◽  
Generating System

Three common indoor houseplants, snake plant (Sansevieria trifasciata), spider plant (Chlorophytum comosum), and golden pothos (Epipremnum aureum), were evaluated for their species effectiveness in reducing ozone concentrations in a simulated indoor environment. Continuously stirred tank reactor (CSTR) chambers housed within a greenhouse equipped with a charcoal filtration air supply system were used to simulate an indoor environment in which ozone concentrations could be measured and regulated. Ozone was injected into the chambers and when concentrations reached 200 ± 5 ppb, the ozone-generating system was turned off and ozone concentrations over time (ozone was monitored every 5–6 min in each chamber) were recorded until about <5 ppb were measured in the treatment chamber. On average, ozone depletion time (time from when the ozone generating system was turned off at ≈200 ppb to <5 ppb in the chamber) ranged from 38 to 120 min per evaluation. Ozone depletion rates were higher within chambers that contained plants than within control chambers without plants, but there were no plant species differences.

scholarly journals Efficiency of Volatile Formaldehyde Removal by Indoor Plants: Contribution of Aerial Plant Parts versus the Root Zone

2008 ◽  
Vol 133 (4) ◽  
pp. 521-526 ◽  
Author(s):  
Kwang Jin Kim ◽  
Mi Jung Kil ◽  
Jeong Seob Song ◽  
Eun Ha Yoo ◽  
Ki-Cheol Son ◽  
...  
Keyword(s):  
Root Zone ◽  
Time Interval ◽  
Formaldehyde Concentration ◽  
Plant Parts ◽  
Indoor Plants ◽  
Removal Capacity ◽  
Formaldehyde Removal ◽  
Internal Concentration ◽  
Gaseous Formaldehyde ◽  
Formaldehyde Metabolism

The contribution of aerial plant parts versus the root zone to the removal of volatile formaldehyde by potted Fatsia japonica Decne. & Planch. and Ficus benjamina L. plants was assessed during the day and night. The removal capacity of the entire plant, aerial plant parts, and root zone was determined by exposing the relevant parts to gaseous formaldehyde (2 μL·L−1) in airtight chambers (1.0 m3) constructed of inert materials. The rate of formaldehyde removal was initially rapid but decreased as the internal concentration diminished in the chamber. To compare the removal efficiency between species and plant parts, the time interval required to reach 50% of the initial concentration was determined (96 and 123 min for entire plants of F. japonica and F. benjamina, respectively). In both species, the aerial plant parts reduced the formaldehyde concentration during the day but removed little during the night. However, the root zone eliminated a substantial amount of formaldehyde during the day and night. The ratio of formaldehyde removal by aerial plant parts versus the root zone was similar for both species, at ≈1:1 during the day and 1:11 at night. The effectiveness of the root zone in formaldehyde removal was due primarily to microorganisms and roots (≈90%); only about 10% was due to adsorption by the growing medium. The results indicate that the root zone is a major contributor to the removal of formaldehyde. A better understanding of formaldehyde metabolism by root zone microflora should facilitate maximizing the phytoremediation efficiency of indoor plants.

scholarly journals Energy Saving for GO Green Environment

2019 ◽  
Vol 8 (9S2) ◽  
pp. 844-846
Keyword(s):  
Energy Saving ◽  
Rural Areas ◽  
Open Space ◽  
Skin Diseases ◽  
Control Measures ◽  
Health Issues ◽  
Nuclear Families ◽  
Natural Lighting ◽  
Air Circulation ◽  
The Impact

Green environment is not only planting of trees . It need not always be to create or invent something new for having a green surroundings and neighborhood. It can also be to measure to be taken to save our neighborhood from pollution. Many of us do not know the impact of using halogen lamps, neon lamps and other high voltage generating lighting system on our environment. These bulbs not only generate more heat in the surroundings where they are used but also consume high electricity. These lights when discarded will produce gases which are more harmful for the environment. They pollute the air by producing argon gas which will cause health issues like cancer, skin diseases. In the present day of nuclear families people are using more electricity and burn more lamps to have lighting in their homes. To give more clarity they are using artificial lighting to make their homes bright. This problem never arouse in the earlier period as the homes constructed were naturally built in such a way more air circulation was there and more ventilation. Homes in earlier days had backyards and more open space for good air circulation and natural lighting. But in the present few decades the culture of cluster homes apartments, multiplex complexes have become more common as people from rural areas are shifting towards urban cities. To accommodate these migrated families it has become a must to go for multiplex complexes and apartments. This is generating more pollution in the environment. In earlier days we never heard the terms of global warming, pollution control measures, Go green concepts. All these concepts have evolved in the last few decades. One of the reason is during increase in number of apartments, nuclear families. In places where one joint family was using a single lamp to complete their day to day activities are now replaced by 2 or 3 families using one light each in each house. So instead of one light we are using 3 or 4 lamps and generating more heat and pollution in our environment. The present study is an attempt to find out the alternative solution of using LED/LCD, iCaTS lamps on the energy saving and cost saving and environment friendly electric usage system

scholarly journals Variation in Formaldehyde Removal Efficiency among Indoor Plant Species

HortScience ◽  
2010 ◽  
Vol 45 (10) ◽  
pp. 1489-1495 ◽  
Author(s):  
Kwang Jin Kim ◽  
Myeong Il Jeong ◽  
Dong Woo Lee ◽  
Jeong Seob Song ◽  
Hyoung Deug Kim ◽  
...  
Keyword(s):  
Leaf Area ◽  
Removal Efficiency ◽  
Native Plants ◽  
Psidium Guajava ◽  
Osmunda Japonica ◽  
Foliage Plants ◽  
Formaldehyde Removal ◽  
Selaginella Tamariscina ◽  
Anthurium Andraeanum ◽  
Gaseous Formaldehyde

The efficiency of volatile formaldehyde removal was assessed in 86 species of plants representing five general classes (ferns, woody foliage plants, herbaceous foliage plants, Korean native plants, and herbs). Phytoremediation potential was assessed by exposing the plants to gaseous formaldehyde (2.0 μL·L−1) in airtight chambers (1.0 m3) constructed of inert materials and measuring the rate of removal. Osmunda japonica, Selaginella tamariscina, Davallia mariesii, Polypodium formosanum, Psidium guajava, Lavandula spp., Pteris dispar, Pteris multifida, and Pelargonium spp. were the most effective species tested, removing more than 1.87 μg·m−3·cm−2 over 5 h. Ferns had the highest formaldehyde removal efficiency of the classes of plants tested with O. japonica the most effective of the 86 species (i.e., 6.64 μg·m−3·cm−2 leaf area over 5 h). The most effective species in individual classes were: ferns—Osmunda japonica, Selaginella tamariscina, and Davallia mariesii; woody foliage plants—Psidium guajava, Rhapis excels, and Zamia pumila; herbaceous foliage plants—Chlorophytum bichetii, Dieffenbachia ‘Marianne’, Tillandsia cyanea, and Anthurium andraeanum; Korean native plants—Nandina domestica; and herbs—Lavandula spp., Pelargonium spp., and Rosmarinus officinalis. The species were separated into three general groups based on their formaldehyde removal efficiency: excellent (greater than 1.2 μg·m−3 formaldehyde per cm2 of leaf area over 5 h), intermediate (1.2 or less to 0.6), and poor (less than 0.6). Species classified as excellent are considered viable phytoremediation candidates for homes and offices where volatile formaldehyde is a concern.

scholarly journals Energy-saving House based on the Healthy-Housing theory——in Sanjiangyuan, Qinghai

2019 ◽  
Vol 136 ◽  
pp. 03028
Author(s):  
Zhao Binbin ◽  
Chen Yang ◽  
Lei Yuhan
Keyword(s):  
Energy Saving ◽  
Indoor Environment ◽  
Indoor Temperature ◽  
Climate Conditions ◽  
Qinghai Province ◽  
Medical Expenses ◽  
Risk Of Disease ◽  
Sparse Population ◽  
Healthy Housing ◽  
Air Circulation

In view of the real problems of sparse population and relative lying medical conditions in the Sanjiangyuan of Qinghai Province, China, on the basis of studying the passive energy-saving houses in the climate conditions of the area, the Healthy-Housing theory was used to optimize the indoor temperature, humidity, air quality, air circulation and so on. Effectively improving the health comfort of houses in the Sanjiangyuan can reduce the risk of disease-caused by indoor environment, promote residents' health and reduce public medical expenses. This study has provided some help for the construction research in the less developed areas of medical and health conditions.

scholarly journals Biophilic Architecture for Restoration and Therapy within the Built Environment: A Review

2019 ◽  
Author(s):  
Farhan Asim ◽  
Venu Shree
Keyword(s):  
Built Environment ◽  
Psychological Health ◽  
Indoor Environment ◽  
Environmental Design ◽  
Psychological Problem ◽  
Health Issues ◽  
Restorative Environments ◽  
Biophilic Design ◽  
Intelligent Buildings

Can &lsquo;restoration and therapy in design&rsquo; signify something more than the places like hospitals and healing gardens? Can those restorative environments be brought inside the working and living environments to mitigate the psychological problem at the source? The main objective of this paper is to look at the strategies and developments of Biophilic design with respect to therapy and restoration in order to achieve sustainability in terms of quality of life within the immediate built-environment. The paper explores the mental health issues under the domains of built-environment and indoor environment with respect to their connection with nature. Biophilic design has gained a favourable momentum within the last four decades and is now visualised as a medium that bridges the gap between humans and the nature. Out of a variety of measures of sustainable environmental design, biophilic design focuses on the end-results of naturally nurtured or inspired habitats and workplaces. It embodies strategies of Green and Intelligent buildings, works as a mitigation strategy for foul indoor environment and establishes the vision that veristic sustainability can only be achieved if there is qualitative control over human physiological prosperity and psychological health. In context of work efficiency, preference and productivity within the indoor environment, it is seen as a promoter of constructive thoughts and enhancer of creativity. The paper aims to enlist biophilic design and retrofitting strategies, which can improve cognitive function, reduce stress and provide mental peace within the built environment.

Efficient removal of gaseous formaldehyde in air using hierarchical titanate nanospheres with in situ amine functionalization

2016 ◽  
Vol 18 (27) ◽  
pp. 18161-18168 ◽  
Author(s):  
Feng Chen ◽  
Shengwei Liu ◽  
Jiaguo Yu
Keyword(s):  
Amine Functionalization ◽  
Efficient Removal ◽  
Formaldehyde Removal ◽  
Formaldehyde In Air ◽  
Gaseous Formaldehyde

Amine-grafted titanate nanospheres are fabricated as efficient and recyclable adsorbents for formaldehyde removal.

scholarly journals Fundamentals of Ornamental Plants in Removing Benzene in Indoor Air

Atmosphere ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 221 ◽  
Author(s):  
Yu Gong ◽  
Tao Zhou ◽  
Peiran Wang ◽  
Yinuo Lin ◽  
Ruomeng Zheng ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Indoor Air ◽  
Chlorophyll Concentration ◽  
Ornamental Plants ◽  
Hedera Helix ◽  
C3 Plant ◽  
Epipremnum Aureum ◽  
Benzene Removal ◽  
Chlorophytum Comosum ◽  
Dark Conditions

The concentration of benzene in indoor air has received appreciable attention due to its adverse health effects. Although phytoremediation has been considered as an eco-friendly method to remove benzene, it is unclear how to select plants with a high removal rate. In this study, we evaluated the benzene removal efficiency of four common ornamental plants, Epipremnum aureum, Chlorophytum comosum, Hedera helix and Echinopsis tubiflora, and we also explored the factors impacting benzene removal efficiency. The removal efficiency of all plants in this study averaged at 72 percent. The benzene absorption rates of Epipremnum aureum, Hedera helix and Chlorophytum comosum were 1.10, 0.85 and 0.27 µg·m−3·cm−2, respectively. This is due to the different transpiration rates and chlorophyll concentrations in the plants. The benzene removal efficiency of crassulacean acid metabolism plant (Echinopsis tubiflora) was 23% higher than C3 plant (Epipremnum aureum) under dark conditions. This can be attributed to the fact that the characteristic of Echinopsis tubiflora stomata is different from Epipremnum aureum stomata, which is still open under dark conditions. Therefore, Echinopsis tubiflora can take up more benzene than Epipremnum aureum. For different initial benzene concentrations, the benzene removal efficiency of Echinopsis tubiflora was always great (50–80%), owing to its high rate of transpiration and concentration of chlorophyll. Our findings indicate that transpiration rate and chlorophyll concentration can be used as reference parameters to facilitate ornamental plant screening for indoor air quality improvement.

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