کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8851627 | 1618770 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Absorption of polycyclic aromatic hydrocarbons by a highly absorptive polymeric medium
ترجمه فارسی عنوان
جذب هیدروکربن های آروماتیک چند حلقه ای توسط یک محیط پلیمری بسیار جذب کننده
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کلمات کلیدی
هیدروکربن های آروماتیک چند حلقه، جذب، نرخ جذب، دانه های پلیمری، بهبود نشت نفت،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
The efficacy of a lightly cross-linked polymeric bead to absorb polycyclic aromatic hydrocarbons (PAHs) from the surface of fresh- and salt-water in a simulated oil-spill scenario was assessed in this study. A layer of PAHs at the water surface was created by first preparing the PAHs in hexane and then carefully spiking this mixture onto the surface of water. Beads were then applied to the surface of the organic phase and the amount of hydrocarbons absorbed by the beads was examined at prescribed time intervals and at different temperatures. Absorption of PAHs into the beads was exhaustive with â¼86â¯Â±â¯4% being selectively removed from the organic phase by 120â¯s. First order reaction rates best described the uptake kinetics and absorption rates ranged from 0.0085 (naphthalene) to 0.0325 sË1 (dibenzo[a,h]anthracene). Absorption of PAHs into the beads was driven by molecular volume (A3). Uptake rates increased markedly for PAHs with molecular volumes between 130 A3 and 190 A3. Beyond this molecular volume there was no apparent change in the rate of uptake. This study shows that these polymeric beads have a high affinity for PAHs and can be used under various environmental conditions with negligible difference in absorptive efficacy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 201, June 2018, Pages 441-447
Journal: Chemosphere - Volume 201, June 2018, Pages 441-447
نویسندگان
Olga Francisco, Ifeoluwa Idowu, Kelsey L. Friesen, Matthew McDougall, Sara Seoin Choi, Patrique Bolluch, Oluwadamilola Daramola, Wesley Johnson, Vince Palace, Jörg Stetefeld, Gregg T. Tomy,