Abstract

In 2012, 7 million premature deaths were attributed to air pollution, of which 4.3 million to indoor air pollution inducing the “sick building syndrome.” In particular, formaldehyde, a toxic and highly reactive chemical, has been linked to cancer. The use of soil microbial biomass and plants to remove formaldehyde from polluted air by plants has been proposed, but there are so far few quantitative reports. Here, we developed an efficient plant–microbe technology to remove formaldehyde by adding cultured microorganism into the rhizosphere of three plant species, Tradescantia zebrina Bosse (T. zebrina), Aloe vera (Haw.) Ber (A. vera) and Vigna radiata (Linn.) Wilczek (V. radiata). Shoots were exposed to 0.72 mg of formaldehyde per m³ of air for 24 h. Results show that formaldehyde removal rates were 23.1 ± 0.1 μg/h/g fresh weight with microbes versus 18.5 ± 0.21 μg/h/g without microbes for A. vera, 86.4 ± 0.7 versus 59.3 ± 0.2 μg/h/g for T. zebrine and 97.6 ± 0.9 versus 25.1 ± 4.2 μg/h/g for V. radiata. Overall, formaldehyde removal was increased by 6.7–90.5% using microbes. Formaldehyde removal was influenced by light intensity, with this effect more pronounced in plant–microbe systems.

中文翻译：

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一种有效的植物-微生物植物修复方法，可去除空气中的甲醛

摘要

2012年，空气污染导致700万人过早死亡，其中430万人归因于导致“病态建筑综合症”的室内空气污染。特别地，甲醛（一种有毒且高反应性的化学物质）与癌症有关。已经提出了使用土壤微生物生物量和植物来去除植物从污染的空气中去除甲醛的方法，但是到目前为止，尚无定量报告。在这里，我们开发了一种有效的植物微生物技术，通过将培养的微生物添加到三种植物的根际中来去除甲醛，这三种植物分别是Trade木（T. zebrina），芦荟（Haw。）Ber（A. vera）和and豆（Vigna radiata）林恩 ）Wilczek（V. radiata）。将苗暴露于每m ³空气0.72 mg甲醛中24小时。结果表明，含微生物的甲醛去除速率为鲜重23.1±0.1μg/ h / g，而无微生物的A.vera的甲醛去除率为18.5±0.21μg / h / g，T的去除率为86.4±0.7与59.3±0.2μg/ h / g 。 zebrine和97.6±0.9相对于V. radiata为25.1± 4.2μg / h / g  。总体而言，使用微生物可将甲醛去除率提高6.7–90.5％。甲醛去除受到光强度的影响，这种影响在植物-微生物系统中更为明显。