SONGKLANAKARIN JOURNAL OF SCIENCE & TECHNOLOGY

Volume 41, No. 06, Month NOVEMBER, Year 2019, Pages 1413 - 1420

Effect of triton x-100 and tween 80 on removal of polycyclic aromatic hydrocarbons and possibility of cadmium accumulation by siam weed (chromolaena odorata)

Khanitta Somtrakoon and Waraporn Chouychai

Abstract Download PDF

The ability of Triton X-100 and Tween 80 to stimulate phytoremediation of soil contaminated with phenanthrene (204.5 mg kg-1), pyrene (253.6 mg kg-1), and cadmium (81.0 mg kg-1) by Siam weed (Chromolaena odorata) was studied. The results revealed that only 10 × critical micelle concentration of Triton X-100 added in soil planted with Siam weed could increase phenanthrene removal compared with unplanted soil that received the same surfactant at 60 days after transplantation. Also, there were no significant differences on polycyclic aromatic hydrocarbon removal in planted soil that received different surfactants. The amounts of phenanthrene and pyrene that remained in the planted soil were 7.4 and 16.7 mg kg-1, respectively, while those remaining in the planted soil with surfactant addition were around 6.7–9.9 and 11.7–24.1 mg kg-1, respectively. Moreover, the addition of Triton X-100 and Tween 80 tended to decrease the accumulation of cadmium in the shoot of Siam weed.

Keywords

cadmium, Chromolaena odorata, PAHs, phytoremediation, surfactant

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