The potted plant microcosm substantially reduces indoor air VOC pollution II

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dc.contributor.author Orwell, Ralph en_US
dc.contributor.author Wood, Rolf en_US
dc.contributor.author Burchett, Margaret en_US
dc.contributor.author Tarran, Jane en_US
dc.contributor.author Torpy, Fraser en_US
dc.date.accessioned 2009-12-21T02:29:31Z
dc.date.available 2009-12-21T02:29:31Z
dc.date.issued 2006 en_US
dc.identifier 2006005636 en_US
dc.identifier.citation Orwell Ralph et al. 2006, 'The potted plant microcosm substantially reduces indoor air VOC pollution II', Springer, vol. 177, pp. 59-80. en_US
dc.identifier.issn 0049-6979 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/3645
dc.description.abstract Indoor air-borne loads of volatile organic compounds (VOCs) are usually significantly higher than those outdoors, and chronic exposures can cause health problems. Our previous laboratory studies have shown that the potted-plant microcosm, induced by an initial dose, can eliminate high air-borne VOC concentrations, the primary removal agents being potting-mix microorganisms, selected and maintained in the plant/root-zone microcosm. Our office field-study, reported in the preceding paper, showed that, when total VOC (TVOC) loads in reference offices (0 plants) rose above about 100 ppb, levels were generally reduced by up to 75% (to < 100 ppb) in offices with any one of three planting regimes. The results indicate the induction of the VOC removal mechanism at TVOC levels above a threshold of about 100 ppb. The aims of this laboratory dose-response study were to explore and analyse this response. Over from 5 to 9 days, doses of 0.2, 1.0, 10 and 100 ppm toluene and m-xylene were applied and replenished, singly and as mixtures, to potted-plants of the same two species used in the office study. The results confirmed the induction of the VOC removal response at the lowest test dosage, i.e in the middle of the TVOC range found in the offices, and showed that, with subsequent dosage increments, further stepwise induction occurred, with rate increases of several orders of magnitude. At each dosage, with induction, VOC concentrations could be reduced to below GC detection limits (< 20 ppb) within 24 h. A synergistic interaction was found with the binary mixtures, toluene accelerating m-xylene removal, at least at lower dosages. The results of these two studies together demonstrate that the potted-plant microcosm can provide an effective, self-regulating, sustainable bioremediation or phytoremediation system for VOC pollution in indoor air. en_US
dc.publisher Springer en_US
dc.relation.isbasedon http://dx.doi.org/10.1007/s11270-006-9092-3 en_US
dc.title The potted plant microcosm substantially reduces indoor air VOC pollution II en_US
dc.parent Water Air and Soil Pollution en_US
dc.journal.volume 177 en_US
dc.journal.number en_US
dc.publocation Netherlands en_US
dc.identifier.startpage 59 en_US
dc.identifier.endpage 80 en_US
dc.cauo.name SCI.Medical and Molecular Biosciences en_US
dc.conference Verified OK en_US
dc.for 060700 en_US
dc.personcode 760016 en_US
dc.personcode 920074 en_US
dc.personcode 101663 en_US
dc.personcode 890009 en_US
dc.personcode 000029 en_US
dc.percentage 100 en_US
dc.classification.name Plant Biology en_US
dc.classification.type FOR-08 en_US
dc.description.keywords indoor air pollution; VOC; TVOC; toluene; m-xylene; "sick building syndrome"; "building related illness"; environmental biotechnology; bioremediation; phytoremediation; potted-plant en_US
dc.staffid 000029 en_US


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