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The potential of microplastics as adsorbents of sodium dodecyl benzene sulfonate and chromium in an aqueous environment.

Zhang, L., Liu, Y., Wang, W., Zhang, W., Zuo, Q., Abdelkader, A.M., Xi, K., Heynderickx, P.M. and Kim, K-H., 2021. The potential of microplastics as adsorbents of sodium dodecyl benzene sulfonate and chromium in an aqueous environment. Environmental Research, 197 (June), 111057.

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DOI: 10.1016/j.envres.2021.111057

Abstract

Considering the omnipresence of microplastics (MPs) in aquatic environments, they are expected to exert significatn impacts as carriers for diverse waterborne pollutants. In this work, the adsorptive behavior of two ionic components (i.e., sodium dodecyl benzene sulfonate (SDBS) and Cr(VI)) has been explored against the two types of MPs as model adsorbents, namely poly (ethylene terephthalate) (PET) and polystyrene (PS). The influence of key variables (e.g., pH, particle size, and dose of the MPs) on their adsorption behavior is evaluated from various respects. The maximum adsorption capacity values of SDBS on PET and PS are estimated to be 4.80 and 4.65 mg⋅g-1, respectively, while those of Cr(VI) ions are significantly lower at 0.080 and 0.072 mg⋅g-1, respectively, The adsorptive equilibrium of SDBS is best described in relation to pH and MP size by a Freundlich isotherm. In contrast, the adsorption behavior of Cr(VI) is best accounted for by a Langmuir isotherm to indicate its adsorption across at least two active surface sites.

Item Type:Article
ISSN:0013-9351
Uncontrolled Keywords:Adsorption modeling ; Cr(VI) ; Microplastics ; Particle size ; SDBS ; pH
Group:Faculty of Science & Technology
ID Code:35512
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:18 May 2021 09:38
Last Modified:27 May 2021 07:53

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