Fluff post: do you use those Renuzit or Glade air freshener solids?
8 years ago
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- 8 years ago
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Thoughts on air porosity in container media.
Comments (8)Interesting post. Thanks Some additional thoughts as they relate to SWCs. Would the water holding porosity be a good indication of the mixes wicking ability? If so then by testing the porosity, both aeration and water-holding, you could determine whether your mix will work in a bottom fed self-watering container. If you know for instance your tomato will drink 3 gallons/day in August. How could one translate water-holding porosity to wicking rates? Now I'm encouraged to mix up some of the mix I'm using this year and test it out. Then at the end of the season test out the used mix and see the difference. Then determine whether the mix would last one more year (for veggies). Wouldn't it be great if you could just get rid of the soil and just have air and water -- oh that's aeroponics, another set of totally different challenges/possibilities. Cheers...See MoreSoil microbes for air quality?
Comments (20)nancy_pnwzone8(OR zone 8) ps here are some links if you're interested. Wolverton Environmental Services http://www.wolvertonenvironmental.com/ Plant Air Purifier http://www.plantairpurifier.com/ Andrea http://www.andreaair.com/ Inside Urban Green - What did Bill Really Say? http://www.insideurbangreen.org/2009/11/my-entry-1.html Phytophilter Technologies http://www.phytofilter.com/ Plants are the Strangest People - Indoor Plants as Air Purifiers http://plantsarethestrangestpeople.blogspot.com/2008/04/indoor-plants-as-air-purifiers.html Kamal Meattle: How to grow fresh air http://www.youtube.com/watch?v=gmn7tjSNyAA (i would be remiss for posting this link without providing more info. in this TED talk, it sounds like they just added some plants to a big office building, like you would see in a typical cubicle farm, and - shebang - the air was cleaned. what he doesn't show is that they have a full on indoor grow op with high intensity lighting and full hydroponic plumbing. the grow rooms are tied into the building's HVAC. there was another video that showed the set up but i can't find it now.) I would add these links: 1. Wikipedia Houseplants together with the medium in which they are grown can reduce components of indoor air pollution, particularly volatile organic compounds (VOC) such as benzene, toluene, and xylene. Plants remove CO2 and release oxygen and water, although the quantitative impact for house plants is small. Most of the effect is attributed to the growing medium alone, but even this effect has finite limits associated with the type and quantity of medium and the flow of air through the medium.[25] The effect of house plants on VOC concentrations was investigated in one study, done in a static chamber, by NASA for possible use in space colonies.[26] The results showed that the removal of the challenge chemicals was roughly equivalent to that provided by the ventilation that occurred in a very energy efficient dwelling with a very low ventilation rate, an air exchange rate of about 1/10 per hour. Therefore, air leakage in most homes, and in non-residential buildings too, will generally remove the chemicals faster than the researchers reported for the plants tested by NASA. The most effective household plants reportedly included aloe vera, English ivy, and Boston fern for removing chemicals and biological compounds. Plants also appear to reduce airborne microbes, molds, and increase humidity.[27] However, the increased humidity can itself lead to increased levels of mold and even VOCs.[28] When CO2 concentrations are elevated indoors relative to outdoor concentrations, it is only an indicator that ventilation is inadequate to remove metabolic products associated with human occupancy. Plants require CO2 to grow and release oxygen when they consume CO2. A study published in the journal Environmental Science & Technology considered uptake rates of ketones and aldehydes by the peace lily (Spathiphyllum clevelandii) and golden pothos (Epipremnum aureum.) Akira Tani and C. Nicholas Hewitt found "Longer-term fumigation results revealed that the total uptake amounts were 30−100 times as much as the amounts dissolved in the leaf, suggesting that volatile organic carbons are metabolized in the leaf and/or translocated through the petiole."[29] It is worth noting the researchers sealed the plants in Teflon bags. "No VOC loss was detected from the bag when the plants were absent. However, when the plants were in the bag, the levels of aldehydes and ketones both decreased slowly but continuously, indicating removal by the plants".[30] Studies done in sealed bags do not faithfully reproduce the conditions in the indoor environments of interest. Dynamic conditions with outdoor air ventilation and the processes related to the surfaces of the building itself and its contents as well as the occupants need to be studied. While results do indicate house plants may be effective at removing some VOCs from air supplies, a review of studies between 1989 and 2006 on the performance of houseplants as air cleaners, presented at the Healthy Buildings 2009 conference in Syracuse, NY, concluded "...indoor plants have little, if any, benefit for removing indoor air of VOC in residential and commercial buildings."[31] Since high humidity is associated with increased mold growth, allergic responses, and respiratory responses, the presence of additional moisture from houseplants may not be desirable in all indoor settings.[32] sourse: https://en.wikipedia.org/wiki/Indoor_air_quality#Effect_of_indoor_plants 2.Critical Review: How Well Do House Plants Perform as Indoor Air Cleaners? Dingle et al. (2000) reported on a field study of three portable office buildings in Perth, Australia to test removal of formaldehyde by plants. Five plants (five species) were added to each room every two days to a maximum of 20 plants (at 2.44 plants per m2) after nine days. Two adjacent portable office buildings were used as controls with no plants. The mean formaldehyde concentrations were about 850 ppb, except with 20 plants. The authors state that the results show “no change in formaldehyde concentrations with the addition of 5 or 10 plants in the rooms and only an 11% reduction in formaldehyde concentrations with 20 plants in the room.” They did not indicate that this reduction was statistically significant.... With this caveat firmly in mind, it is hardly surprising that the HBI study failed to find any effect on pollutant removal by plants, despite a reasonably strong study design in terms of using controls. The study by Dingle et al. found only an 11% reduction in formaldehyde with the highest loading of plants (20 plants in a room or a loading of 2.44 plants per m2), which is not feasible in the real world and is probably not statistically significant. ... Sourse: http://www.buildingecology.com/articles/critical-review-how-well-do-house-plants-perform-as-indoor-air-cleaners/ I think people overestimate the ability of plants to clean the air. That's why EPA don't write about plants as cleaner at all: Epa wrote about Mechanical air filters, Electronic air cleaners, Gas-phase air filters, UVGI cleaners , PCO cleaners, Ozone generators , Portable air cleaners but EPA don't write about plants as cleaner at all.Sourse: http://www.epa.gov/iedweb00/pubs/residair.html If you use plants as cleaner You need to test air inside your house or flats. You need to use complex devices to test air otherwise you may find that you don't have any benefit from plants at all. And this is only placebo. You can spend your time for nothing. Only complex devices to test air inside your houses or flats can help you. Please don't trust so much NASA or Wolverton. Be critical. To read Critical Reviews too. Сheck the air in your homes with complex devices....See MoreAir Freshners
Comments (36)Graywings, BB&B is out of the Yankee candle you recommended, so I went to the YC website and ordered them for the same price. I can't wait to get it! Natal, I use both YC warmers and the Scentsy. Scentsy is good when you have a cat in the house and you want to keep it low, plugged in on the kitchen counter. I can leave the room and not fear a cat wagging it's tail in the fire. lol. I use the "fire' warmers on top of the mantel because the cats won't get up there. I've always used YC because IMO, they have the best scents and they'll scent up multiple rooms at once. Cinnamon and Vanilla are my favorites because while strong, they aren't over powering like a flower scent. Anything Rose is a good one. When I discovered Scentsy, the quality of their scents are just as good as YC. Can you tell I love scented rooms? Another thing to try which is what I keep in my bathrooms are oil and reeds in decorative bottles. You can buy the kits, but only buy them from places that have nice scents, like YC. I have a bowl of potpouri in my entryway, and it's a nice smell as soon as I walk into the house. Plus it's a nice decorative touch to the room....See MorePlease recommend a plug in air fresh that lasts a long time
Comments (52)I love fragrance, but I do understand there can be too much of a good thing. I use the wax melters. I've tried tarts/melts you buy at the store, ones sold online from large companies, and ones sold by independent vendors. I've been given Scentsy, but refuse to buy it. Sorry, I'm not supporting any businesses set up that way. With all brands or vendors, I've found ones that worked and ones that didn't. At work, we take turns in our suite burning. We all have our own offices, and never use one in reception, so the fragrance stays concentrated in one location mostly, with just a hint in the hallway. We get lots of compliments. At home, I have a few burners, but only have one always in use. It's on a timer. It comes on about an hour before I get up and stays on around 2 hours. In the afternoon, it comes on about an hour before we get home and runs around 2 hours as well. This way I wake up to a nice fragrance and come home to one. At the same time, the pets get a break, I don't go nose blind, and I can get several uses out of one melt....See More- 8 years agolast modified: 8 years ago
- 8 years ago
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